Eberron Celestia setup [Archive] - Wizards Community

Post/Author/DateTimePost
elondir

11-01-06, 03:31 PM		Celestia is a free program that allows visualization of other star systems.

This is a setup to enable visualization of Eberron's moons. I recalculated the periods for each moon using Kepler's second law [T^2/R^3 = 4 pi^2/(G*Meberron)]. If you don't like these shorter periods, just change the period to the number of days you want.

Zarantyr is plain HUGE in the night sky.

You need to assign a star first. Make a text file named eberron.stc and put the following in it:


500000 "Eberronspace"
{
RA 12.271253
Dec 57.816551
Distance 4000
SpectralType "G2V"
AbsMag 4.83
}


Now make a file called eberron.ssc and put the following in it:

(DELETED; USE POST #13)

For Lharvion's texture, just make a light grey jpg that is 512 x 256 and draw a black gash in the middle half. Put it in c:\program files\celestia\extras\eberron\textures\m edres directory.

Put these in your c:\program files\celestia\extras\eberron directory and enjoy!
Siberys

11-01-06, 09:31 PM		I put it in just as stated, but to no avail. Do I need to make a .CEL file? do I need to replace the * with something?

Thanks,
Siberys
elondir

11-02-06, 08:36 AM		Hmm, all I needed were three files, as typed: eberron.stc, eberron.ssc, and lharvion.jpg. I wonder why it didn't work? I thought I saw a typo that wouldn't go away - put the texture in medres, not m edres, but other than that it should work. What version of Celestia are you using? I can send you a zip of my files if you give me your email address.
Siberys

11-02-06, 03:30 PM		I had already done the m edres fix, I saw it in the prog files section. I am using the one currently available at the primary website.

Sure, e-mail it to me. I'll PM you my email.

cheers,

§ Siberys
AvonRekaes

11-02-06, 07:45 PM		So.. how do I get to eberronspace? I'm just floating around Sol right now...
Siberys

11-02-06, 11:18 PM		I figured it out! when around sol, press enter, type "eberronspace", and press enter again. that should do it...

cheers,

siberys
elondir

11-03-06, 08:28 AM		Once Celestia Loads, press enter and type Eberronspace. Press "g" to go to its sun. Then press 1 and then g. Now you are at Eberron.
Sereno

11-03-06, 09:06 AM		Thanks for this ... it's awesome to see what the Eberron system looks like ... excellent work!!!

:dancin: :bow: :dancin: :bow: :dancin:
elondir

11-03-06, 10:08 AM		I've done some calculations on this... Zarantyr is well within its Roche Limit unless it is close to the same mass as Eberron, which would cause insanely high tides, and so is Olarune. They should be torn apart. Furthermore the tide at the equator created by Zarantyr would be 70 meters if Zarantyr were the same density as our moon, compared to our 84 cm tides here. Fixing the Roche Limit problem (by setting Zarantyr density = 3.455 our moon's density and Olarune = 2.02 our moon's mass density) the Zarantyr high tide is 4.859 km higher than its low tide, and Olarune's high tide is 319 m higher than its low tide, which means only mountainous regions would be inhabitable on the planet due to the huge flooding.

More later.

EDIT:

Using the distances and Saturn's ring mass density (I'm asking on the board for a good value), the Ring of Siberys produces a 21 m constant high tide at the equator and is 43 m lower at the poles. (It adds a very slight oblateness to Eberron)

The solar tide on Eberron is only 4.48 cm due to the fact that Eberron is smaller than Earth, solving for mass based on the fact that Eberron has Earth-normal gravity and using mass density and the maps (which suggest that Eberron has a circumference of 15000 mi).

Discounting Zarantyr and Olarune, the other tides amount to a maximum fluctuation of 109 cm between the highest high tide and the lowest low tide.

If you're curious, here are the equatorial tide values.

moon differenct between high tide and low tide (meters)
Zarantyr 4859.36
Olarune 319.93
Therendor 38.40
Eyre 25.90
Dravago 36.20
Nymm 1.79
Lharvion 2.65
Barrakas 2.38
Rhaan 0.23
Sypheros 0.51
Aryth 0.20
Vult 0.77
Sun 0.09
Siberys 0 (causes 43.87 m bulge at equator though)

Also the planetary disks look bigger in the night sky as follows:
moon apparent size compared to our moon
Zarantyr 16x
Olarune 7.88x
Therendor 5.83x
Eyre 5.02x
Dravago 5.25x
Nymm 1.99x
Lharvion 2.2x
Barrakas 2.1x
Rhaan 1x
Sypheros 1.3x
Aryth 0.96x
Vult 1.6x




Let's look at increasing their distances from Eberron to see how they affect things.

Adding 100,000km to all of the semimajor axes produces realistic tides and increases the periods to closer to what we might expect. It also shrinks the disks proportionally.

Finally, we can use Kepler's second law to calculate the distance from Eberron based on the period, which is probably better for the campaign since the phases are more interesting than the actual distances. This rearranges the moons' order and will shrink the disks much more. But this is for another time.
elondir

11-03-06, 10:09 AM		thanks!

Thanks for this ... it's awesome to see what the Eberron system looks like ... excellent work!!!

:dancin: :bow: :dancin: :bow: :dancin:
Sereno

11-03-06, 11:01 AM		Using the distances and Saturn's ring mass density (I'm asking on the board for a good value), the Ring of Siberys produces a 21 m constant high tide at the equator and is 43 m lower at the poles. (It adds a very slight oblateness to Eberron)

BTW, I don't want you to think that I'm discounting your hard work to put the Eberron solar system into "real world" terms ... I think it's really interesting.

However, I do need to point out that your calculations might be "off" because unlike Saturn, Eberron's ring is not formed from bits of rock, it's made up of the remains of a progenitor dragon ... that could certainly account for the fact that Eberron doesn't have a 21m tide at the equator! :)

The "real" question, here, is why DOESN'T Eberron have a 4km high tide thanks to Zarantyr and Olarune? And, of course, "the designers didn't think of that" doesn't count. Likewise, "it's magic" is too simple ... what kind of magic might be at work? What could happen if that magic ever fails?
eehamburg

11-03-06, 11:54 AM		However, I do need to point out that your calculations might be "off" because unlike Saturn, Eberron's ring is not formed from bits of rock, it's made up of the remains of a progenitor dragon ...

While a true statement... it is inaccurate. The deal with the progenitor dragon is a myth ... at least according to the way that KB tells it. So if it is a myth, then it is a myth created to explain how the planet, the ring, and the underground came to be. So ... how do you know that the remains aren't bits of rock now?
elondir

11-03-06, 12:13 PM		Fixed everything by using Kepler to calculate distance based on period. The highest high tide now equals 236 cm, the disks are all roughly moon-sized, and there are no Roche limit problems. Notice that the moons have changed order from near to far.


"Eberron" "Eberronspace"
{
Texture "eberron.*"


# SpecularTexture "earth-spec.*"
Color [ 0.85 0.85 1.0 ]
SpecularColor [ 0.5 0.5 0.55 ]
SpecularPower 25.0
HazeColor [ 1 1 1 ]
HazeDensity 0.3
Radius 3865 # equatorial
Oblateness 0.015273

# BumpMap "earthbump.*"
# BumpHeight 4.5

Atmosphere {
Height 60
Lower [ 0.43 0.52 0.65 ]
Upper [ 0.26 0.47 0.84 ]
Sky [ 0.40 0.6 1.0 ]
Sunset [ 1.0 0.6 0.2 ]
# Sunset [ 0.3 1.0 0.5 ]
CloudHeight 7
CloudSpeed 65
CloudMap "earth-clouds.*"
}

CustomOrbit "eberron"
EllipticalOrbit {
Period 0.9205
SemiMajorAxis 1.0000
Eccentricity 0.0167
Inclination 0.0001
AscendingNode 348.739
LongOfPericenter 102.947
MeanLongitude 100.464
}

Rings {
Inner 4806 # includes some ringlets inside edge of C ring at 74660
Outer 8938
Texture "saturn-rings.png"
}


RotationPeriod 24 # 23.93419
Obliquity -23.45
RotationOffset 280.5 # offset at default epoch J2000

Albedo 0.30
}

"Zarantyr" "Eberronspace/Eberron"
{
Texture "miranda.*"
Radius 2011
# Oblateness 0.002


#CustomOrbit "zar"
EllipticalOrbit {
Period 77
SemiMajorAxis 545333
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.32
}

"Olarune" "Eberronspace/Eberron"
{
Texture "mars.*"
Radius 1528
# Oblateness 0.002


#CustomOrbit "ola"
EllipticalOrbit {
Period 56
SemiMajorAxis 441022
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.18
}

"Therendor" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 1770
# Oblateness 0.002


#CustomOrbit "the"
EllipticalOrbit {
Period 42
SemiMajorAxis 364056
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.18
}


"Eyre" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 1931
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 63
SemiMajorAxis 477048
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}

"Dravago" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 3218
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 91
SemiMajorAxis 609578
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}


"Nymm" "Eberronspace/Eberron"
{
Texture "venus.*"
Radius 1448
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 28
SemiMajorAxis 277827
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}

"Lharvion" "Eberronspace/Eberron"
{
Texture "lharvion.*"
Radius 2172
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 98
SemiMajorAxis 640451
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}

"Barrakas" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 2414
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 104.5
SemiMajorAxis 668466
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.8
}

"Rhaan" "Eberronspace/Eberron"
{
Texture "neptune.*"
Radius 1287
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 49
SemiMajorAxis 403459
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.8
}

"Sypheros" "Eberronspace/Eberron"
{
Texture "phoebe.*"
Radius 1931
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 35
SemiMajorAxis 322389
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.08
}

"Aryth" "Eberronspace/Eberron"
{
Texture "mars.*"
Radius 1609
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 84
SemiMajorAxis 577902
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.08
}

"Vult" "Eberronspace/Eberron"
{
Texture "mars.*"
Radius 2897
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 69.5
SemiMajorAxis 509321
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.08
}
elondir

11-03-06, 12:13 PM		Deleted Duplicate
elondir

11-03-06, 12:14 PM		Hey how do you do those collapsible text blocks?
Sereno

11-03-06, 12:15 PM		While a true statement... it is inaccurate. The deal with the progenitor dragon is a myth ... at least according to the way that KB tells it. So if it is a myth, then it is a myth created to explain how the planet, the ring, and the underground came to be. So ... how do you know that the remains aren't bits of rock now?

Partially because:

A) the fact that it's a creation "myth" doesn't mean that it can't also have elements of literal truth ... whether the ring/planet/underdark is REALLY Siberys/Eberron/Khyber is not spelled out one way or ther other. It need not be wholly real nor wholly myth.

B) no one who's ever attempted to travel up to the ring has come back to talk about it ... that leads me to believe it's not just rock. Other environmental factors can be dealt with by magic ... so what's the problem up there?

C) Siberys shards apparently fall from the ring, BUT they only land in certain places (like, NOT Sarlona) ... is that a feature of the ring, or the land beneath?

Other details lead me to believe that things are NOT the way they should be ... the lack of crippling tides and the very existance of Zarantyr, for example. As a dedicated Eberron-ite, I'm not about to write these issues off as simply "Keith didn't think about that" ;)
eehamburg

11-03-06, 12:22 PM		no ... it may not be that Keith didn't think about it. It could be that it is up to the DM to decide.
elondir

11-03-06, 12:27 PM		I would throw out the distances to the moons given in the web feature and use the ones I calculated in post #13. No tide problems, no disk problems, no roche problems.


Oh, since all ring systems will end up around the equator the siberys shards will fall near the equator. So it's probably a feature of the land beneath.

The obvious problem with getting to the ring is the lack of air. Spelljammer rules don't necessarily have to apply to Eberron.
elondir

11-03-06, 12:49 PM		I just realized you'll need a texture. Modify this image (http://static.flickr.com/80/277554959_843d40f3b7_o.jpg) by cropping out the other continents and then resize the image to 1024x512.
Sereno

11-03-06, 01:16 PM		I would throw out the distances to the moons given in the web feature and use the ones I calculated in post #13. No tide problems, no disk problems, no roche problems.

True, but that messes up the "awesomeness" of looking up into the night sky and seeing it "completely filled" with Zarantyr! :)

Oh, since all ring systems will end up around the equator the siberys shards will fall near the equator. So it's probably a feature of the land beneath.

Or maybe the shards just don't like Sarlona.... :) Maybe they have the ability to go where they want ... but, why?

The obvious problem with getting to the ring is the lack of air. Spelljammer rules don't necessarily have to apply to Eberron.

True, but there's plenty of spells that can deal with a lack of air ... not to mention that WF don't breathe at all and it would be pretty silly not to send a couple of them, too.

----

BTW, I'm not just trying to be a jerk :) The best part, IMO, about Eberron is the amount of mystery that the setting maintains so well. What are the dragonmarks, really? What happened to that 13th moon? The Mourning? Who's the Lord of Blades? And, so on.
elondir

11-03-06, 01:42 PM		I agree, dude. BTW, how do I make spoiler blocks?

EDIT: figured it out
ChimericalWolf

11-03-06, 02:17 PM		One possibility that would screw over what you're doing here is that the Moons might not be physical objects at all, but rather illusory projections of the planes onto the Material.
elondir

11-03-06, 02:56 PM		I thought about that, but there are two articles online: the calendar which includes phases of the moons, and the article on the moons themselves that gave distances and radii.
eehamburg

11-03-06, 03:38 PM		I thought about that, but there are two articles online: the calendar which includes phases of the moons, and the article on the moons themselves that gave distances and radii.


But that could still be just physical manifestations of the projections from the planes.
elondir

11-03-06, 04:25 PM		Well, if they are physical manifestations then they can be shown in Celestia, right?
tacoronte

11-03-06, 05:37 PM		Bravo !

This is absolutely great :)
Will probably do some screen captures to "set the mood" for a game.

Can I ask for a favor tho?
I would like to have the original coordinates you had created on Post #1, it is much more awe-inspiring to look at the moons at that size.

Thanks !
Thwyvylyn

11-03-06, 11:03 PM		Question, what are those extra landmasses that don't appear in the ECS?
Siberys

11-03-06, 11:53 PM		to Thwyvylyn:

those are from other settings It's a "condensed" map. I'll get you the normal one (BTW elondir, thanks for those files!)

to everyone: I made a yellow-gold ring pattern. simply replace the saturn_rings.png file in textures->lores with this picture (keeping the filename).

EBERRON MAP (http://i6.photobucket.com/albums/y240/Siberys/eberron.jpg)

SIBERYS RING PIC (http://i6.photobucket.com/albums/y240/Siberys/saturn-rings.png)
Sereno

11-05-06, 07:57 AM		I love going to Eberron and then backing off just far enough to see the planet and all of the moons then set the timeframe forward about 1000x to see everything orbiting! It just looks so cool. You can even turn the lables on to see exactly which one is which ... awesome!!!!

BTW, does anyone know how to properly view the "night sky" from Eberron?

When I go to Eberron, it leaves you looking right at the planet, almost full screen, and I'd like to "turn around" to look up into the sky and see the ring and the moons from various places on Eberron's surface ... I just started playing with Celestia, so I'm not sure how to do that.

Anyone know?
ieattrollsforbreakfast

11-05-06, 04:17 PM		Click and drag the left mouse button from the surface to take a look at the sky.

This is shaping up pretty well :)
I have a few textures of the moons hanging around from the last time this project came up if anyone wants to see them. Some of them might not work with the new setup, though, since the moons might point in the wrong direction!
I don't have any screens of this new one, but here are a few of the older one:
http://www.eberronbestiary.com/eberronday.jpg
http://www.eberronbestiary.com/zarantyr.jpg
And a video (I think I widened the ring since then, though):
http://www.eberronbestiary.com/EbSpace.wmv
Siberys

11-05-06, 05:42 PM		That eberron texture in the movie... Do you still have it? it looks nice :D

cheers,
Siberys
Sereno

11-06-06, 09:41 AM		Another quick Celestia question ... what am I doing wrong in that neither the ring texture nor the planet texture ever show up?

If I replace the saturn-rings.png with the eberron-rings.png (or modify the .ssc file and switch saturn with eberron) I only get a solid while ring.

And, regardless of where I put it, I get no texture on the planet....
elondir

11-06-06, 11:34 AM		Bravo !

This is absolutely great :)
Will probably do some screen captures to "set the mood" for a game.

Can I ask for a favor tho?
I would like to have the original coordinates you had created on Post #1, it is much more awe-inspiring to look at the moons at that size.

Thanks !

Unfortunately, I overwrote the old file.

To do that just convert the "Average distance from Eberron" into km (by multiplying by 1.61) and putting it in the SemiMajorAxis field for each moon in the ssc file. Here's a link to the article.

The Moons of Eberron (http://www.wizards.com/default.asp?x=dnd/ebds/20050307a)

The orbits will still have the same periods as the calendar.

If you want the Keplerian periods use T = squareroot(R^3 * (4 * pi^2) / (G * M )) where T is the period, G is Newton's Gravitational Constant = 6.668*10^-11, and M is the mass of Eberron = 2.19948*10^24 kg.
elondir

11-06-06, 11:40 AM		Click and drag the left mouse button from the surface to take a look at the sky.

This is shaping up pretty well :)
I have a few textures of the moons hanging around from the last time this project came up if anyone wants to see them. Some of them might not work with the new setup, though, since the moons might point in the wrong direction!
I don't have any screens of this new one, but here are a few of the older one:
http://www.eberronbestiary.com/eberronday.jpg
http://www.eberronbestiary.com/zarantyr.jpg
And a video (I think I widened the ring since then, though):
http://www.eberronbestiary.com/EbSpace.wmv

Awesome video! :) I can't get the gold ring to render, either.
ieattrollsforbreakfast

11-06-06, 01:03 PM		Here are the files I have made. They aren't exactly scientifically accurate, and the periods don't match the lunar calendar, but it gives a fair representation I think. I've also assumed an Earth-sized Eberron, and kept the distances as presented in the Dragonshard. There's also an orbit for Crya in there. If you can't get the ring to render, check what I put and see if there is a difference.

#######################
#eberron.stc
#######################
# Ebersun
313131 "Ebersun" { #Hipparcos number
RA 98.0 #Right Ascension
Dec 5.04 #Declination
Distance 5500 #in Light Years
SpectralType "G0"
AppMag 15 #Apparent Magnitude
}
#######################


#########################

"Eberron" "Ebersun" {
Texture "ebworld4.jpg"

# SpecularTexture "earth-spec.*"
Color [ 0.85 0.85 1.0 ]
SpecularColor [ 0.5 0.5 0.55 ]
SpecularPower 25.0
HazeColor [ 1 1 1 ]
HazeDensity 0.3
Radius 6378.140 # equatorial
# Oblateness 0.0034

# BumpMap "earthbump.*"
# BumpHeight 4.5

Atmosphere {
Height 60
Lower [ 0.43 0.52 0.65 ]
Upper [ 0.26 0.47 0.84 ]
Sky [ 0.40 0.6 1.0 ]
Sunset [ 1.0 0.6 0.2 ]
# Sunset [ 0.3 1.0 0.5 ]
CloudHeight 7
CloudSpeed 65
CloudMap "earth-clouds.*"
}

CustomOrbit "vsop87-earth"
EllipticalOrbit {
Period 1.0000
SemiMajorAxis 1.0000
Eccentricity 0.0167
Inclination 0.0001
AscendingNode 348.739
LongOfPericenter 102.947
MeanLongitude 100.464
}

RotationPeriod 23.9344694 # 23.93419
Obliquity -23.45
RotationOffset 280.5 # offset at default epoch J2000

Albedo 0.30

Rings {
Inner 12000
Outer 16000
Texture "eberron-rings4.png"
}
}

"Zarantyr" "Ebersun/Eberron"
{
Texture "zarantyr.jpg"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 1000
# Oblateness 0.002

EllipticalOrbit {
Period 16
SemiMajorAxis 22880
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Olarune" "Ebersun/Eberron"
{
Texture "olarune1.jpg"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 760
# Oblateness 0.002

EllipticalOrbit {
Period 17
SemiMajorAxis 35200
Eccentricity 0.054900
Inclination -5
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Therendor" "Ebersun/Eberron"
{
Texture "moon.*"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 880
# Oblateness 0.002

EllipticalOrbit {
Period 18
SemiMajorAxis 62400
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Eyre" "Ebersun/Eberron"
{
Texture "moon.*"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 960
# Oblateness 0.002

EllipticalOrbit {
Period 19
SemiMajorAxis 83200
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Dravago" "Ebersun/Eberron"
{
Texture "dravago.jpg"
BumpMap "mercurybump.*"
BumpHeight 0.3
Radius 1600
# Oblateness 0.002

EllipticalOrbit {
Period 20
SemiMajorAxis 124000
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Nymm" "Ebersun/Eberron"
{
Texture "nymm.jpg"
BumpMap "mercurybump.*"
BumpHeight 0.3
Radius 720
# Oblateness 0.002

EllipticalOrbit {
Period 21
SemiMajorAxis 152000
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Lharvion" "Ebersun/Eberron"
{
Texture "moon.*"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 1080
# Oblateness 0.002

EllipticalOrbit {
Period 22
SemiMajorAxis 200000
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Barrakas" "Ebersun/Eberron"
{
Texture "moon.*"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 1200
# Oblateness 0.002

EllipticalOrbit {
Period 23
SemiMajorAxis 230400
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}
"Rhaan" "Ebersun/Eberron"
{
Texture "rhaan.jpg"
BumpMap "mercurybump.*"
BumpHeight 0.3
Radius 640
# Oblateness 0.002

EllipticalOrbit {
Period 24
SemiMajorAxis 268800
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}

"Sypheros" "Ebersun/Eberron"
{
Texture "sypheros.jpg"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 960
# Oblateness 0.002

EllipticalOrbit {
Period 25
SemiMajorAxis 308800
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}

"Aryth" "Ebersun/Eberron"
{
Texture "aryth.jpg"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 800
# Oblateness 0.002

EllipticalOrbit {
Period 26
SemiMajorAxis 353600
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}

"Vult" "Ebersun/Eberron"
{
Texture "moon.*"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 1440
# Oblateness 0.002

EllipticalOrbit {
Period 27.321661
SemiMajorAxis 403200
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}


"Crya" "Ebersun/Eberron"
{
Texture "moon.*"
BumpMap "moonbump.*"
BumpHeight 0.3
Radius 200
# Oblateness 0.002

EllipticalOrbit {
Period 999999999
SemiMajorAxis 4000000
Eccentricity -0.85
Inclination 30
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.12
}

All the textures are set to what I'm using, so the specific ones, such as those for Eberron, Olarune, Nymm, Dravago and the rings, won't show up.#

Siberys, I think I have that one somewhere, but it's not nearly as spectacular up close ;)
I'll upload it, the one I'm using now, and a few of the moon ones, soon.
Sereno

11-06-06, 01:34 PM		All the textures are set to what I'm using, so the specific ones, such as those for Eberron, Olarune, Nymm, Dravago and the rings, won't show up.#

Siberys, I think I have that one somewhere, but it's not nearly as spectacular up close ;)
I'll upload it, the one I'm using now, and a few of the moon ones, soon.

Where is the file "eberron-rings4.png," relative to the other files in Celestia's directory? Also, what size is it (height x width)?

It seems like Celestia is expecting certain sizes from it's textures and won't use them if they aren't right.

I did manage to get the planet texture working, but only after I resized it to 1024x512 as suggested by elondir....

Could the same thing be wrong with my eberron-ring.png?
ieattrollsforbreakfast

11-06-06, 02:11 PM		Where is the file "eberron-rings4.png," relative to the other files in Celestia's directory? Also, what size is it (height x width)?
It's in Celestia/Addons/Eberron/Textures/Lores
The file's size is 1024 x 2 (2 high, 1024 wide).

It seems like Celestia is expecting certain sizes from it's textures and won't use them if they aren't right.

I did manage to get the planet texture working, but only after I resized it to 1024x512 as suggested by elondir....

Could the same thing be wrong with my eberron-ring.png?

Yes, I expect that's the problem. Unless the files are at very specific sizes they won't show up.
Sereno

11-07-06, 08:25 AM		It's in Celestia/Addons/Eberron/Textures/Lores
The file's size is 1024 x 2 (2 high, 1024 wide).

Yes, I expect that's the problem. Unless the files are at very specific sizes they won't show up.

Thanks, 'trolls ... that did the trick! I resized the eberron-ring.png (as posted above) to 1024x2 and it's rendering just fine!

This is awesome!! Thanks to everyone involved!!
elondir

11-07-06, 09:43 AM		Most 3D renderers require all textures to be powers of 2 in size.
Dragonlord20000

01-01-07, 11:10 PM		:help:

I'm having a problem with this. I followed all the directions when making the text files, adding eberron's texture, and following the procedure to bring the planet up on screen. However all I get is a zoom in on either sol or mercury. Does anyone know whats causing this? Thanks in advance for any and all help.
Dawn_of_an_Age

01-03-07, 01:44 PM		What is Eberron Celestia?:confused:
Sereno

01-03-07, 01:51 PM		What is Eberron Celestia?:confused:

Celestia is a really cool program for virtually exploring things in space (either real, like our solar system, or made-up like Eberron, Aliens, etc.)


From their site (http://www.shatters.net/celestia/):

Welcome to Celestia
... The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.

Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.

All movement in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.

Celestia is expandable. Celestia comes with a large catalog of stars, galaxies, planets, moons, asteroids, comets, and spacecraft. If that's not enough, you can download dozens of easy to install add-ons with more objects.

The Eberron files discussed here are setup files necessary to see all of Eberron (including the moons) as a functioning solar system.

It's awesome and many thanks to the OP for providing this service!!! :dancin: :bow: :dancin: :bow:
Dawn_of_an_Age

01-03-07, 04:08 PM		Celestia is a really cool program for virtually exploring things in space (either real, like our solar system, or made-up like Eberron, Aliens, etc.)



The Eberron files discussed here are setup files necessary to see all of Eberron (including the moons) as a functioning solar system.

It's awesome and many thanks to the OP for providing this service!!! :dancin: :bow: :dancin: :bow:

How do I get all the stuff with Eberron already setup? If I download the program do I have to build Eberron Myself, or is there an Eberron file that I can download that already has all of the necessary code?
Sereno

01-04-07, 09:46 AM		How do I get all the stuff with Eberron already setup? If I download the program do I have to build Eberron Myself, or is there an Eberron file that I can download that already has all of the necessary code?

Download Celestia from their site and install it.

Then, follow elondir's directions in his posts -- creating the files from his listings in this thread. Just re-read the whole thread and you'll probably have all of your setup issues settled for you. Watch out for the sizes of the textures you create....

That's all you'll need to do, really.
Amaril

01-04-07, 10:59 AM		Has anyone bothered to zip the files and host them somewhere?
Sereno

01-04-07, 12:34 PM		:help:

I'm having a problem with this. I followed all the directions when making the text files, adding eberron's texture, and following the procedure to bring the planet up on screen. However all I get is a zoom in on either sol or mercury. Does anyone know whats causing this? Thanks in advance for any and all help.

Celestia always centers on Sol when you run it ... you have to type the "Enter" key and then type "eberronspace." in the "popup" window that opens at the bottom of the Celestia window.

Then, type the "1" key to set Eberron (the first planet) as your target -- you'll see the name written out in the upper left corner of the Celestia window, and then type the "G" key to Go There.

Once you arrive, you can use the mouse to change your view of the planet/moons and move around the Eberron system.

Also, try backing away a little and hitting the "L" key a couple of times to set everything in motion by turning up the speed of time and the "M" key to label the moons!

BTW, here is the original eberron.ssc before Elondir applied "real life" physics to it! :)



"Eberron" "Eberronspace"
{
Texture "eberron.*"


# SpecularTexture "earth-spec.*"
Color [ 0.85 0.85 1.0 ]
SpecularColor [ 0.5 0.5 0.55 ]
SpecularPower 25.0
HazeColor [ 1 1 1 ]
HazeDensity 0.3
Radius 3842 # equatorial
# Oblateness 0.0034

# BumpMap "earthbump.*"
# BumpHeight 4.5

Atmosphere {
Height 60
Lower [ 0.43 0.52 0.65 ]
Upper [ 0.26 0.47 0.84 ]
Sky [ 0.40 0.6 1.0 ]
Sunset [ 1.0 0.6 0.2 ]
# Sunset [ 0.3 1.0 0.5 ]
CloudHeight 7
CloudSpeed 65
CloudMap "earth-clouds.*"
}

CustomOrbit "eberron"
EllipticalOrbit {
Period 0.9205
SemiMajorAxis 1.0000
Eccentricity 0.0167
Inclination 0.0001
AscendingNode 348.739
LongOfPericenter 102.947
MeanLongitude 100.464
}

Rings {
Inner 10000 # includes some ringlets inside edge of C ring at 74660
Outer 14000
Texture "eberron-rings.png"
}


RotationPeriod 24 # 23.93419
Obliquity -23.45
RotationOffset 280.5 # offset at default epoch J2000

Albedo 0.30
}

"Zarantyr" "Eberronspace/Eberron"
{
Texture "miranda.*"
Radius 2011
# Oblateness 0.002


#CustomOrbit "zar"
EllipticalOrbit {
Period 0.402104
SemiMajorAxis 23013
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.32
}

"Olarune" "Eberronspace/Eberron"
{
Texture "mars.*"
Radius 1528
# Oblateness 0.002


#CustomOrbit "ola"
EllipticalOrbit {
Period 0.793637
SemiMajorAxis 36210
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.18
}

"Therendor" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 1770
# Oblateness 0.002


#CustomOrbit "the"
EllipticalOrbit {
Period 2.00934
SemiMajorAxis 67264
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.18
}


"Eyre" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 1931
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 2.78837
SemiMajorAxis 83685
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}

"Dravago" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 3218
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 5.07346
SemiMajorAxis 124724
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}


"Nymm" "Eberronspace/Eberron"
{
Texture "venus.*"
Radius 1448
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 6.88556
SemiMajorAxis 152888
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}

"Lharvion" "Eberronspace/Eberron"
{
Texture "lharvion.*"
Radius 2172
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 10.3924
SemiMajorAxis 201168
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.33
}

"Barrakas" "Eberronspace/Eberron"
{
Texture "moon.*"
Radius 2414
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 12.8498
SemiMajorAxis 231746
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.8
}

"Rhaan" "Eberronspace/Eberron"
{
Texture "neptune.*"
Radius 1287
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 16.1926
SemiMajorAxis 270370
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.8
}

"Sypheros" "Eberronspace/Eberron"
{
Texture "phoebe.*"
Radius 1931
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 19.9383
SemiMajorAxis 310603
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.08
}

"Aryth" "Eberronspace/Eberron"
{
Texture "mars.*"
Radius 1609
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 24.431
SemiMajorAxis 355665
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.18
}

"Vult" "Eberronspace/Eberron"
{
Texture "mars.*"
Radius 2897
# Oblateness 0.002


#CustomOrbit "moon"
EllipticalOrbit {
Period 29.7477
SemiMajorAxis 405555
Eccentricity 0.054900
Inclination 5.15
}

Obliquity 23.45 # mean axis
EquatorAscendingNode 0.0 # mean axis
RotationOffset 38

Albedo 0.18
}
Sereno

01-04-07, 12:34 PM		Has anyone bothered to zip the files and host them somewhere?

The files are only 1K and 5K, no real need to zip 'em....
Amaril

01-04-07, 12:37 PM		The files are only 1K and 5K, no real need to zip 'em....

I didn't mean for compression purposes. I meant for convenient distribution. Additionally, I was hoping the textures could be included as well.

It would be much easier to have the instructions of how to set up Celestia and interact with the system within a text file in the zip, along with all of the files necessary to create the setup.
Logos7

01-05-07, 10:58 AM		hey all,

first of all THank You for all your Hard Work on This, I got Eberron Running and it looks Awesome, but a couple things i wouold like to add/ask

First, What is the name for the Eberron Planet Surface Texture, I want to customize, but i can't seem to get the right file so i thought i'd ask straight out. Apologies if it is a repeat, but i've read this whole thread a few times and it isn't straight forwarrd enough for me to make outu

Second Observations

Leaving eberron running at a million speed is interesting first of all ( and im using the second 'more realistic' 'less true to data' version )

The Ring of Siberous Can Leave a Big honking Shadow on Eberron, Am i the only one who get's this? Do i have the tilt the wrong way or sometthing or does Eberron have steady Winters in the northern Hemisphere as the ring of Siberous Blocks Larges portions of sunlight? EDIT Rechecked my Times, Man Eberron Must have some preety savage winter's the ring's shaddow sits on both the northern and southern hemisphere for like 4 months out of the year when the pole is furtherest away during that time anyway ;0



And as well am i the only one noticing the potential for fair numbebs of lengthy solar eclipses, Zarantyr, Therendor, and Eyre can all (and the other's to a much lesser extent) leave a Large Shadow on the Planet on a preety regular basis when it's all three ( Zarantyr would leave a shadow about the size of a coke can on the map between the cover of the front page of the ECS, Therendor a Quater and Eyre a Penny) Creppy Eclipses and Ice Ages might be working their way into my game!

Anyway another technical question, Is their anyway for my to set a 'Dark Texture' for the times the surface of Eberron get's shaddowed as aposed to pitch blackness ( More for the Ring Shaddow then the Moons )

Anyway Thanks again and i hope someone else finds these observations

Logos
Siberys

01-07-07, 07:09 PM		closest thing i can get is striped I made this one; alternating yellow/transparent.

Rings (http://i6.photobucket.com/albums/y240/Siberys/saturn-rings.png)
Siberys

01-07-07, 11:58 PM		I made a movie of a day near gatherhold, if you spent it four miles above the surface and watched only the sky in the East. It's two gigs, though! of course, 8.5 minutes'll do that... :D
ophanimx

01-21-07, 02:26 AM		I didn't mean for compression purposes. I meant for convenient distribution. Additionally, I was hoping the textures could be included as well.

It would be much easier to have the instructions of how to set up Celestia and interact with the system within a text file in the zip, along with all of the files necessary to create the setup.

I'm with you. If someone had an Eberron setup to share, it'd be easiest for everyone else if they'd zip their textures/etc and such.

It's easy enough to copy and paste the setup files, but most of us are lacking textures or the ability or capacity to make our own.
ieattrollsforbreakfast

01-21-07, 12:25 PM		I've uploaded the setup I use (which has some arbitrary settings to make things more interesting, distances and sizes as per the Dragonshard, simple textures for most of the moons and a sample orbit for Crya) to the Eberron Bestiary.

Download the file and extract the 'Eberron' folder to Celestia/Extras/Addons

Eberron Celestia Setup (http://www.eberronbestiary.com/files/Eberron_Celestia.rar)

The name of the star is 'Ebersun', go to that and you're away.
d24478667

02-01-07, 09:31 PM		I don't know how to do that type of file on a mac, so I can't set it up. :confused: Any help would be appreciated.

EDIT: Well, I got it to work.. I think. Is eberron supposed to be silver on one side and black on the other?
ophanimx

02-04-07, 07:10 PM		ieattrollsforbreakfast: Thank you. :) I used your files to make/print pictures of the Eberron sky. They hang up on the wall where we play, now. The players loved it.
davethebrave371

03-05-07, 06:51 PM		I don't know how to do that type of file on a mac, so I can't set it up. :confused: Any help would be appreciated.

EDIT: Well, I got it to work.. I think. Is eberron supposed to be silver on one side and black on the other?

One of my players has a Mac, and can't get it to work. How did you get it to work?
Fabius Maximus

06-29-07, 06:55 AM		I've uploaded the setup I use (which has some arbitrary settings to make things more interesting, distances and sizes as per the Dragonshard, simple textures for most of the moons and a sample orbit for Crya) to the Eberron Bestiary.

Download the file and extract the 'Eberron' folder to Celestia/Extras/Addons

Eberron Celestia Setup (http://www.eberronbestiary.com/files/Eberron_Celestia.rar)

The name of the star is 'Ebersun', go to that and you're away.

Could someone please re-up the files?
ieattrollsforbreakfast

06-29-07, 07:09 PM		Could someone please re-up the files?

Re-up the files? They're still there. At least, they're on the file list, and the download works my end. Perhaps it was just some temporary problem you were experiencing.
Fabius Maximus

06-30-07, 12:29 PM		Re-up the files? They're still there. At least, they're on the file list, and the download works my end. Perhaps it was just some temporary problem you were experiencing.

'Twas. Thanks.
dsivis

07-08-07, 01:11 AM		Okay, who added the 13th moon in and where'd said individual get the name Crya? Just curious, is all.
Amazing work, by the way.
bykov1

08-05-07, 05:45 PM		I would like to thank those of you who put the effort into this. It has been a great help in me finding this great program and using it to generate my own version of Eberron.

Have any of you modified this since?

Bykov.
elondir

08-06-07, 09:16 AM		I don't know about the others, but I myself have not changed it.
ieattrollsforbreakfast

08-06-07, 04:17 PM		Okay, who added the 13th moon in and where'd said individual get the name Crya? Just curious, is all.
Amazing work, by the way.

I added the 13th moon, way out there on an orbit so slow it'll stay remote forever. The name comes from Faiths of Eberron, Blood of Vol chapter.

I haven't made any adjustments for a long time. If anyone has improved on it, drop me an e-mail and I'll upload the changes for everyone to enjoy :)
bykov1

08-12-07, 01:11 AM		Here is my take on Eberron's Sun. I have opted to name it Dol Arrah, the God(dess) of the Sun. I will post my SSC in a bit. No great skins or anything, just the mechanics of it.


#######################
#eberron.stc
#######################
# Dol Arrah
324150 "Dol Arrah" # Hipparcos number
{
RA 0.00 # Right Ascension (Degrees)
Dec 0.00 # Declination (Degrees)
Distance 5000.00 # Distance from Sol (Light Years)
SpectralType "G3V" # Spectral Classification
AbsMag 4.9772 # Absolute Magnititude
Radius 681351.00 # Radius of Star (Kilometers)
}
#######################



On a side note, given the different combinations that the moons can take due to the conflicting material out there. I have basically four different ways to set up the moons:

1) Set up per the Baker article and calculate the rotations based on the given distances.

2) Set up per the calendar utility and calculate the distances based from that data.

3) Keep the order of the moons per the article but assign the orbital timing and distances per the calander utility, such that Zarantyr orbits every 28 days, Olarune 35 etc..

4) Keep the order of the article and assign the revolutions per the utility for each moon. (i.e. Zarantyr is the closest moon, but takes 77 days to complete a revolution.) This would make both the article and the utility correct, but slap physics in the face with the proverbial mackeral.

Any thoughts?

Bykov.
bykov1

08-12-07, 06:56 PM		Here is Eberron sans the moons. Here are some on the tweaks I made to Eberron:

1) Reversed Eberron's rotation to allow the sun to rise in the west.
2) Set the Ring of Siberys to center on the Roche Limit (9800 km).
3) Set orbit of 336 days, this brought Eberron closer to the sun.
4) Slowed Eberron's rotation to allow for a 24 hour day.
5) Increased size of Eberron to accomodate the Frostfell

The rest of the modifications are to the sun to allow for a similar environment.

6) Dropped the class of the star from a G2V to a G3V.
7) Decreased Luminosity, Magnitude and Diameter accordingly.


#########################

"Eberron" "Dol Arrah"

{
Class "Planet"
# Mesh
Texture "ebworld4.jpg"
Emissive false
# Night Texture
# Overlay Texture
# BumpMap "earthbump.*"
# BumpHeight 4.5

Color [ 0.85 0.85 1.00 ]
# SpecularTexture "earth-spec.*"
SpecularColor [ 0.05 0.50 0.55 ]
SpecularPower 25.0
HazeColor [ 0.05 0.50 0.55 ]
HazeDensity 0.8
Radius 6580.09 # Equatorial Radius (kilometers)
Oblateness 0.0035 # Flatness
# Beginning
# Ending
# InfoURL

Atmosphere
{
Height 60.0
Lower [ 0.43 0.52 0.65 ]
Upper [ 0.26 0.47 0.84 ]
Sky [ 0.40 0.60 1.00 ]
Sunset [ 1.00 0.60 0.20 ]
CloudHeight 7.0
CloudSpeed 65.0
CloudMap "earth-clouds.*"
}

EllipticalOrbit
{
Period 0.9199
SemiMajorAxis 0.9352544245
Eccentricity 0.016725
Inclination 0.0001
AscendingNode 348.739
LongOfPericenter 102.947
# ArgOfPericenter
MeanLongitude 100.464
# MeanAnomaly
# Epoch
}

RotationPeriod 24.07164179 # 1 Full Rotation of Eberron (Hours)
Obliquity 156.55
# LongOfRotationAxis
RotationOffset 280.5 # offset at default epoch J2000
# PrecessionRate
# Orientation
# EquatorAscendingNode

Albedo 0.367

Rings
{
Inner 7800.00
Outer 11800.00
Texture "eberron-rings2.png"
Color [1.00 0.80 0.00]
}
}



I will post improvements, expansions to these files as time permits.

All constructive feedback is appreciated.

Bykov.
elondir

08-13-07, 10:17 AM		The sun rises in the west? Where is that from?
bykov1

08-13-07, 10:53 AM		The sun rises in the west? Where is that from?

Geographical observation. Thick forestation typically forms on the windward side of mountains (see Q'barra, Lhazaar, & Eldeen Reaches). Thin vegetation areas, deserts & plains for on the leeward side of mountains (See Talenta, Blade Desrt & Demon Wastes).

So, in order to accommodate these geograpical elements, one would need to reverse the wind patterns of the northern hemisphere of Eberron (and in turn, the same would happen in the southern hemisphere). In order to accomplish that, one would need to reverse the rotation of Eberron. Side effects may include: sun rising in the west, low birth weight, and low resale value on your home.

Bykov.
eehamburg

08-13-07, 11:09 AM		low resale value on your home.

ok ... you lost me on this one.
bykov1

08-13-07, 12:20 PM		ok ... you lost me on this one.

It came from a tv commercial that ran a couple years back that was mocking all these medication adds.....especially the side affects aspect.

It started off with headache, low birth weight, bloating, constipation, **** leakage, insomnia......as it went on...and on.... the side affects started to include: growth of a third eye, possession by the devil, low resale value on your home, etc.

That is where it came from. Never did catch all the side affects. Only time I ever remember watching TV, hoping to see a commercial.

For some reason, I thought I needed to add some levity. Go figure.

Bykov.
elondir

08-13-07, 12:36 PM		Interesting observation. And it adds campaign flavor too. Now, what about the G3 star part?
bykov1

08-13-07, 01:17 PM		Interesting observation. And it adds campaign flavor too. Now, what about the G3 star part?

ooo. That was the fun part. Well, Eberron's solar orbit is considered to be 336 days long. This would move the planet in considerably from the standard 1 AU. If so, the radiation balance of Eberron would be considerably higher than that of Earth with the same size star. So through substitution, I was able to solve for the two body orbit equation, solar insolation, tha solar mass/radius/temperature proportionality, and the solar mass/radius/density proportionality. Keeping the known orbit (336 days), an assumed similar radiation balance to Earth (1366 W/m^2), and Sol as the basis of comparison, I was able to get an approximate solar surface temperature of 5636 K, a .935 AU orbit for Eberron, as well as solar radius, mass, luminosity and density.

So basically, I totally geeked out. :P

Based on the Solar Classification scale and the values I estimated via the above, I classified "Dol Arrah" as a G3V star.

Bykov.
Joni-san

08-13-07, 08:17 PM		It came from a tv commercial that ran a couple years back that was mocking all these medication adds.....especially the side affects aspect.

It started off with headache, low birth weight, bloating, constipation, **** leakage, insomnia......as it went on...and on.... the side affects started to include: growth of a third eye, possession by the devil, low resale value on your home, etc.

That is where it came from. Never did catch all the side affects. Only time I ever remember watching TV, hoping to see a commercial.

For some reason, I thought I needed to add some levity. Go figure.

Bykov.

It's called Progenitorivox, it's made by SquabbMerlCo... (http://www.jibjab.com/originals/drugs_i_need)

Am I on the right track?
bykov1

08-14-07, 09:26 AM		I had noticed some comments earlier in the thread about the Roche Limit. What distance did you get for the Roche? With the radius I estimated for Eberron (6580.09 km), planetary density (same as earth 5,520 kg/m^3), and lunar density (assuming same as moon for all satellites 3,340 kg/m^3), I am getting a Roche limit for solids to be 9,800 km from the center of Eberron.

Thanks!
Bykov.
elondir

08-14-07, 10:03 AM		ooo. That was the fun part. Well, Eberron's solar orbit is considered to be 336 days long. This would move the planet in considerably from the standard 1 AU. If so, the radiation balance of Eberron would be considerably higher than that of Earth with the same size star. So through substitution, I was able to solve for the two body orbit equation, solar insolation, tha solar mass/radius/temperature proportionality, and the solar mass/radius/density proportionality. Keeping the known orbit (336 days), an assumed similar radiation balance to Earth (1366 W/m^2), and Sol as the basis of comparison, I was able to get an approximate solar surface temperature of 5636 K, a .935 AU orbit for Eberron, as well as solar radius, mass, luminosity and density.

So basically, I totally geeked out. :P

Based on the Solar Classification scale and the values I estimated via the above, I classified "Dol Arrah" as a G3V star.

Bykov.

I sense a kindred spirit. Rock on, dude. I wrote a random star/solar system generator, linked in my sig. Check it out if you want.


I had noticed some comments earlier in the thread about the Roche Limit. What distance did you get for the Roche? With the radius I estimated for Eberron (6580.09 km), planetary density (same as earth 5,520 kg/m^3), and lunar density (assuming same as moon for all satellites 3,340 kg/m^3), I am getting a Roche limit for solids to be 9,800 km from the center of Eberron.

Thanks!
Bykov.

Remember Eberron is smaller than Earth, though - look at the map scale. I estimate a 15,000 mile circumference. That changes its mass to accomodate for g=9.8 m/s^2, and then redo your calculation.
bykov1

08-14-07, 11:39 AM		Remember Eberron is smaller than Earth, though - look at the map scale. I estimate a 15,000 mile circumference. That changes its mass to accomodate for g=9.8 m/s^2, and then redo your calculation.

Where did you estimate from?

Me... I scaled the inner cover of the ECS and added in the Frostfell from the PGtE. If you take the north-south measurement from the ECS, you will definitely notice that we do not have the whole E-W picture of Eberron. But with the ECS, PGtE, and SoX we do have a near pole to pole picture of Eberron. After all was said and done, my estimation for Eb ended up being bigger than Earth.

Also, I believe the Roche limit would be closer for a smaller planet. For my larger Eb, I am not running into a Roche issue from the article distances. Unless you have much lighter densities for your satellites than that of the moon.

Bykov.
bykov1

08-14-07, 12:49 PM		I sense a kindred spirit. Rock on, dude. I wrote a random star/solar system generator, linked in my sig. Check it out if you want.


Um....love to....where is your sig?

Bykov.
elondir

08-14-07, 12:52 PM		This gets more complicated though, since you don't see all the poles, and the maps might be distorted east to west. For all we know, the inside cover of the ECS could be a Mercator projection. I assumed it was equirectangular cut off at the poles and stretched vertically. I also remember somewhere someone asked Kieth Baker how far the trip across the Barren Sea was, and he mentioned something about "judging by the maps...".

It's reasons like this why I wish WotC (and TSR before them) would put a little math into their maps and make maps that actually have some projection to them, even if it's just equirectangular. As they are, we must assume that they are equidistant orthonormal equal-area maps, which are only possible on a globe. I mean, if you're in the business of world building, at least make the ice caps span the whole map side to side and make the left and right edges match up when you curl them. At least Mystara had a world map with an actual projection.

Now that I think about it, it would be awesome if WotC produced a digital globe texture for Eberron, like Toril had in the FR Atlas and Mystara has out on the net somewhere.
elondir

08-14-07, 12:53 PM		Um....love to....where is your sig?

Bykov.

Here, it's part of a much larger program.
World Builder (http://sourceforge.net/projects/worldbuilder/)
bykov1

08-14-07, 03:28 PM		This gets more complicated though, since you don't see all the poles, and the maps might be distorted east to west. For all we know, the inside cover of the ECS could be a Mercator projection. I assumed it was equirectangular cut off at the poles and stretched vertically. I also remember somewhere someone asked Kieth Baker how far the trip across the Barren Sea was, and he mentioned something about "judging by the maps...".


Even so, the Frostfell is a 4000 mi x 5000 mi continent that is encapsulated 90% on the northern polar cap. A small edge is visible to the NW of Khorvaire. I went with the assumption that the remainder of the Frostfell was *just* outside the scope of the ECS inside cover map, with the possibility a few islands were overlooked. That gave me a minimum circumferencial distance to run with. Just based on those two maps, Eberron cannot be any smaller than the radius I posted, assuming a "standard" oblate spheroid. That leaves an enormous area for a lost continent or what have you in the Barren Sea. Even the current lines do not match up, that at least implies that the E & W edges do not perfectly line-up.

FYI - that would give Eberron a 10.12 m/s^2 gravity. Nothing major, you could even conceiveable drop the density of Eberron down a smidge <-- highly technical term <-- to get the gravity to line back up with Earth norm.

Later,
Bykov.
bykov1

08-14-07, 08:28 PM		Here is something interesting. Zarantyr is spec'd as being pearly white. In my digging through astronomical objects, this would mean an albedo between .80 & .99. So on top of Zarantyr being approximately 15x the size of our moon in the sky, it will also be 7-8x more reflective. If I am getting a feel for this correctly, that would mean that when Zarantyr is full (and not eclipsed) we would be looking at an early morning/late evening sort of illumination, if not brighter.

Back to the grindstone.........who am I kidding, I am enjoying the crap out of this.

Bykov.
cancerousmango

08-15-07, 02:16 AM		This was a nice program actually, once I got the textures running and all. It almost gave me an inkling of what a multi-moon skyline would look like.
bykov1

08-15-07, 12:12 PM		Well, I have all the moons in for my first iteration of this. I may just drop the planet gravity to earth norm just for GP.

Anyhow, I found some information on tidal locking and based on the article distances, the first 10 moons, barring external perturbacious effects, are tidally locked. Meaning, that only one face is presented to Eberron. This works very well for those certain lunar aspects (the anvil, the eye, etc.) that give the moons their character.

The last two moons, for the article mock up, would tidally lock in 11M & 7.5M years, respectively. Now for the 4.5B year old earth, this would be a gimme, they would also be locked. However, following the creation myth and the general timeline that I have been able to find, these moons could conceivably be still rotating under their own power.

Any thoughts? How old would you say Eberron is?

I will be posting my .ssc file shortly.

Bykov.
bykov1

08-16-07, 10:15 AM		Here it is. It is very basic. Have colored the moons, all lunar orbits are circular, all the texture names are dummies, and all moons are tidally locked. I have some ideas for textures, and I will post them when complete. I will also be generating 3 other versions of this file with the different moon configurations mentioned previously. I set the Epoch for this system as 4/1/2004....the release date for the ECS. Currently, if you go to that date, all moons will line-up. As more info becomes available, I will try to incorporate them into the file to add variety to the lunar orbits. I look forward to your input.

The rings I used are a Saturn Ring File that I renamed.


#########################

"Eberron" "Dol Arrah"

{
Class "Planet"
# Mesh
Texture "ebworld4.jpg"
Emissive false
# Night Texture
# Overlay Texture
# BumpMap "earthbump.*"
# BumpHeight 4.5

Color [ 0.85 0.85 1.00 ]
# SpecularTexture "earth-spec.*"
SpecularColor [ 0.05 0.50 0.55 ]
SpecularPower 25.0
HazeColor [ 0.05 0.50 0.55 ]
HazeDensity 0.8
Radius 6580.09 # Equatorial Radius (kilometers)
Oblateness 0.0035 # Flatness
# Beginning
# Ending
# InfoURL

Atmosphere
{
Height 60.0
Lower [ 0.43 0.52 0.65 ]
Upper [ 0.26 0.47 0.84 ]
Sky [ 0.40 0.60 1.00 ]
Sunset [ 1.00 0.60 0.20 ]
CloudHeight 7.0
CloudSpeed 65.0
CloudMap "earth-clouds.*"
}

EllipticalOrbit
{
Period 0.9199
SemiMajorAxis 0.9352544245 #Semi-major Axis of Orbit (AU)
Eccentricity 0.016725
Inclination 0.0
AscendingNode 0.0
LongOfPericenter 0.0
# ArgOfPericenter
MeanLongitude 0.0
# MeanAnomaly
Epoch "2004 4 1 00:00"
}

RotationPeriod 24.07164179 # 1 Full Rotation of Eberron (Hours)
Obliquity 180.00
# LongOfRotationAxis
RotationOffset 0.0 # offset at default epoch J2000
# PrecessionRate
# Orientation
# EquatorAscendingNode

Albedo 0.367

Rings
{
Inner 7800.00 # Inner Limit of Rings (kilometers)
Outer 11800.00 # Outer Limit of Rings (kilometers)
Texture "eberron-rings2.png"
Color [1.00 0.80 0.20]
}
}

"Zarantyr" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
# Texture "zarantyr2.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 1.00 0.95 1.00 ]
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.23 0.26 0.20 ]
# SpecularPower 35.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 1005.8400 # Equatorial Radius (kilometers)
Oblateness 0.00821218 # Flatness
# InfoURL

EllipticalOrbit
{
Period 0.58744305 # Time of Orbit (days)
SemiMajorAxis 30599.5492 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 14.09863322 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.967
}

"Olarune" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "olarune.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 1.00 0.90 0.60 ]# Pale Orange
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 764.4384 # Equatorial Radius (kilometers)
Oblateness 0.00284211 # Flatness
# InfoURL

EllipticalOrbit
{
Period 0.99818398 # Time of Orbit (days)
SemiMajorAxis 43554.7684 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 23.95641546 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.694
}

"Therendor" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "therendor.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.84 0.84 0.84 ]# Pale Gray
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 885.1392 # Equatorial Radius (kilometers)
Oblateness 0.00067829 # Flatness
# InfoURL

EllipticalOrbit
{
Period 2.04326021 # Time of Orbit (days)
SemiMajorAxis 70229.6452 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 # Same as Barrakas
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 49.03824504 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.706
}

"Eyre" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "eyre.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.64 0.64 0.64 ]# Gray/Silver
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 965.6064 # Equatorial Radius (kilometers)
Oblateness 0.00030955 # Flatness
# InfoURL

EllipticalOrbit
{
Period 3.02458105 # Time of Orbit (days)
SemiMajorAxis 91231.5844 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 72.58994522 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.410
}

"Dravago" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "dravago.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.85 0.70 1.00 ]# Pale Lavender
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 1609.3440 # Equatorial Radius (kilometers)
Oblateness 0.00010080 # Flatness
# InfoURL

EllipticalOrbit
{
Period 5.30026122 # Time of Orbit (days)
SemiMajorAxis 132913.5940 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 127.20626936 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.723
}

"Nymm" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "nymm.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 1.00 1.00 0.60 ]# Pale Yellow
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 724.2048 # Equatorial Radius (kilometers)
Oblateness 0.00005712 # Flatness
# InfoURL

EllipticalOrbit
{
Period 7.04123909 # Time of Orbit (days)
SemiMajorAxis 160191.9748 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 168.98973827 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.751
}

"Lharvion" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "lharvion.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.95 0.95 0.95 ]# Dull White
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 1086.3072 # Equatorial Radius (kilometers)
Oblateness 0.00002583 # Flatness
# InfoURL

EllipticalOrbit
{
Period 10.47066500 # Time of Orbit (days)
SemiMajorAxis 208834.3972 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 251.29596010 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.903
}

"Barrakas" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "barrakas.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.84 0.84 0.84 ]# Pale Gray
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 1207.0080 # Equatorial Radius (kilometers)
Oblateness 0.00001713 # Flatness
# InfoURL

EllipticalOrbit
{
Period 12.85577972 # Time of Orbit (days)
SemiMajorAxis 239532.6340 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 308.53871333 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.706
}

"Rhaan" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "rhaan.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.50 0.75 1.00 ]# Pale Blue
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 643.7376 # Equatorial Radius (kilometers)
Oblateness 0.00001713 # Flatness
# InfoURL

EllipticalOrbit
{
Period 16.06402853 # Time of Orbit (days)
SemiMajorAxis 277593.6196 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 385.53668479 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.563
}

"Sypheros" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "sypheros.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.40 0.40 0.40 ]# Smoky Gray
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 965.6064 # Equatorial Radius (kilometers)
Oblateness 0.00000730 # Flatness
# InfoURL

EllipticalOrbit
{
Period 19.69669799 # Time of Orbit (days)
SemiMajorAxis 318149.0884 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 472.72075172 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.160
}

"Aryth" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "aryth.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 1.00 0.40 0.25 ]# Orange-Red
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 804.6720 # Equatorial Radius (kilometers)
Oblateness 0.00000491 # Flatness
# InfoURL

EllipticalOrbit
{
Period 24.01994196 # Time of Orbit (days)
SemiMajorAxis 363049.7860 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 576.47860699 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.303
}

"Vult" "Dol Arrah/Eberron"

{
Class "Moon"
# Mesh
Texture "vult.jpg"
Emissive false
# Night Texture
# Overlay Texture
BumpMap "moonbump.*"
BumpHeight 0.3

Color [ 0.55 0.55 0.55 ]# Gray
# SpecularTexture "earth-spec.*"
# SpecularColor [ 0.00 0.00 0.00 ]
# SpecularPower 0.0
# HazeColor [ 0.00 0.00 0.00 ]
# HazeDensity 0.0
Radius 1448.4096 # Equatorial Radius (kilometers)
Oblateness 0.00000334 # Flatness
# InfoURL

EllipticalOrbit
{
Period 29.12770486 # Time of Orbit (days)
SemiMajorAxis 413583.1876 # Orbital Semi-Major Axis (kilometers)
Eccentricity 0.00
Inclination 0.00 #
AscendingNode 0.00
LongOfPericenter 0.00
# ArgOfPericenter 0.00
MeanLongitude 0.00
# MeanAnomaly 0.00
Epoch "2004 4 1 00:00"
}

RotationPeriod 699.06491656 # Tidally Locked (hours)
Obliquity 0.00
# LongOfRotationAxis
RotationOffset 0.00 # Offset at Epoch (degrees)
# PrecessionRate
# Orientation
EquatorAscendingNode 0.00 # Mean Axis

Albedo 0.303
}



This file is based off the information from the Keith Baker article. The distance to the moons was calculated by taking the "Mean distance between" from the article and adding the radii of the planet & the moon in question.

I will post improvements, expansions to these files as time permits.

All constructive feedback is appreciated.

Bykov.
bykov1

08-16-07, 09:16 PM		OK, I am a little geeked. Just set a geosync orbit from the planet surface to watch the sky. Kinda strange without having any of the moons with angles to the ecliptic, but I digress...

Zarantyr & Olarune *appear* to travel in the opposite direction of the rest of the moons....makes sense, but it did not strike me until I watched it. And then the kicker....Olarune's orbit is *almost* geosynchronous. I takes about 13 weeks from moonrise to moonset. It is way too groovy.

Sorry, I just had to share.

Bykov.
Amaril

10-03-07, 09:24 AM		Anyone interested in Slapping on the map of Sarlona and Argonnessen (once Dragons of Eberron is released)?