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hey guys i am still working on my new addon!

this is my first try at creating my own fictional star system.

if you can't already tell, the bodies are going to have names based on Norse Mythology Gods. with Odin being the central star of the system. a blue super giant! the placement of the bodies in the system are also based on the mythology so if you know your Norse mythos, you'll be pleased to see how the bodies layout with their moons and relative distances to Odin.

still, if anyone is interested in helping me create some awesome textures based on my view of what the planets and moons are supposed to be, i would greatly appreciate it and give credit in the finished product.


this pic shows the orbits of the bodies. kind of hard to tell how they relate from this angle, i will show another one later from another angle to give a sense of the depth of the system.


since the star is a blue super giant, the bodies orbit MUCH further away from the star than the bodies in the Solar system. so from the surface of Midgard, Odin would appear as a really bright, small point of light. i'd imagine you'd even be able to look directly at Odin from the surface.

Here's a list of the system details so far. Let me know what you guys think!


UPDATED BODY LIST!

Note:
Some (most) of the values listed, such as semi-major axes of moons and planets, radii, temperatures (especially temperatures) and rotational periods may not be very realistic, so please bear with me until i can get this system to be as realistic as possible. This is a fictional system in progress and represents a dream of mine. Moons listed are major moons. Minor moons will most likely be added later.

*Central Star*

Odin

Blue SuperGiant
Distance from Earth: 2.5623 LightYears
Absolute Magnitude: 3.24
Apparent Magnitude: -2.28 from Earth
Luminosity: 4.33x Sun
Spectral Class: OIV
Surface Temperature: ~32,000K
Radius: ~90x Sun
Rotational Period: 6.3 days

Planets: 10

-Planets and their moons
(both in order of increasing distance from Odin and parent planets, respectively)

1. Frigg-
A bluish, barren and heavily cratered planet.
Radius: 5775km
Rotational Period: 40.77 days
Avg Temperature: 724K
Semi-Major: 398.3851AU
Moons: None


2. Loki-
A less-than-Frigg-bluish planet with large craters and large smooth areas on its surface.
Radius: 2122km
Rotational Period: 46.813 days
Avg Temperature: 664K
Semi-Major: 478.3871AU
Moons: None


3. Magni-
Had an atmosphere of sorts, but the heat from being so close to Odin turned it into a magma-covered ball of hell.
Radius: 7052km
Rotational Period: 1.352 days
Avg Temperature: 444K
Semi-Major: 523.7233AU
Moons: 1 (Modi)

-Modi (Moon 1 of Magni)-
Much like Frigg and Loki in appearance, yet with a yellow tint.
Radius: 2976
Rotational Period: 12.56 hours
Avg Temperature: 626K
Semi-Major: 212K km


4. Midgard- INHABITED
The "Earth" of the Odin system. A massive planet harboring the largest population of the system. Mostly water, large island continents and many small island systems.
Radius: 9378km
Rotational Period: 1.031 days
Avg Temperature: 300K
Semi-Major: 2000.59AU
Moons: 6

-Freya (Moon 1 of Midgard)- INHABITED
This moon doesn't have a lot of plant life, but enough to sustain an atmosphere and water. Lots of barren desert land. Think of the Sahara desert as a moon, yet with a couple of large bodies of water.
Radius: 4453km
Rotational Period: 23.2 hours
Avg Temperature: 322K
Semi-Major: 386K km

-Freyr (Moon 2 of Midgard)-
A big ball of sand. A desert moon with tiny polar caps. People go there, but they don't live there. Complicated.
Radius: 5437km
Rotational Period: 17.8 hours
Avg Temperature: 318K
Semi-Major: 514K km

-Od (Moon 3 of Midgard)-
Identical in physical properties to Freyr, yet with slightly more snow. Sort of like a small, hospitable Mars.
Radius: 2176km
Rotational Period: 12.9 hours
Avg Temperature: 321K
Semi-Major: 615K km

-Hnoss (Moon 4 of Midgard)-
A reddish, dust ball. Moon-wide, brown dust storms cover most of the planet and obscure a lot of detail from afar.
Radius: 976km
Rotational Period: 37 days
Avg Temperature: 322K
Semi-Major: 702K km

-Gersemi (Moon 5 of Midgard)-
A desert moon as well. Midgard has a few desert moons. Much more ice than any of the other Midgard Moons. White clouds.
Radius: 1276km
Rotational Period: 49 days
Avg Temperature: 320K
Semi-Major: 844K km

-Valhalla (Moon 6 of Midgard)- INHABITED
A moon with snowy mountains and polar caps. Also has very long river systems.
Radius: 4976km
Rotational Period: 1.079 days
Avg Temperature: 310K
Semi-Major: 916K km


5. Thor- INHABITED
Many massive lakes, no real oceans. Not too much ice.
Radius: 7396km
Rotational Period: 1.151 days
Avg Temperature: 315K
Semi-Major: 2001.5237AU
Moons: 4

-Mjollnir (Moon 1 of Thor)-
A small, insignificant moon. Similar to Midgard's desert moons.
Radius: 965km
Rotational Period: 7.8 hours
Avg Temperature: 320K
Semi-Major: 194K km

-Jord (Moon 2 of Thor)-
Dark mountain ranges and light colored desert plains. (Come to think of it, i put alot of desert-type planets in this system. Sounds weird, but looks nice anyway.)
Radius: 3345km
Rotational Period: 16.9 hours
Avg Temperature: 320K
Semi-Major: 369K km

-Jarnsaxa (Moon 3 of Thor)- INHABITED
Not alot of plant life, yet one large ocean on the surface and craters filled with water.
Radius: 4472km
Rotational Period: 24.76 hours
Avg Temperature: 320K
Semi-Major: 424K km

-Sif (Moon 4 of Thor)-
An orange, barren, cratered moon. Nothing special.
Radius: 2009km
Rotational Period: 14 hours
Avg Temperature: 320K
Semi-Major: 519K km


6. Baldur-
A blue gas giant with brilliant green streaks of clouds that glow on the night side of the planet.
Radius: 90492km
Rotational Period: 2.914 days
Avg Temperature: 274K
Semi-Major: 2009.2034AU
Moons: 3

-Hod (Moon 1 of Baldur)-
Barren, brown and mottled. Polar caps are misleading as this moon is too close to Baldur to be inhabited.
Radius: 6445km
Rotational Period: 1.417 days
Avg Temperature: 322K
Semi-Major: 501K km

-Hermoth (Moon 2 of Baldur)-
A ball of low-density icy dust. The ice isn't water ice, however and the structural instability of Hermoth, coupled with the tidal forces of Hod and Thokk constantly pulling it apart account for the myriad of cracks and fissures on its surface.
Radius: 4951km
Rotational Period: 2.792 days
Avg Temperature: 259K
Semi-Major: 821K km

-Thokk (Moon 3 of Baldur)- INHABITED
A rainforest planet. Reminiscent of Endor from Star Wars. A beautiful planet (theoretically... in my lucid dreams...).
Radius: 763okm
Rotational Period: 1.021 days
Avg Temperature: 254K
Semi-Major: 870K km


7. Ragnarok-
The largest planet in the Odin system. A massive gas giant with wind storms that would dwarf the Great Red Spot of our Jupiter. Rather bland in color, however.
Radius: 129268km
Rotational Period:
Avg Temperature:
Semi-Major:
Moons: 7

-Garm (Moon 1of Ragnarok)-
A failed terraformation attempt. Only mutated, violent creatures able to withstand the immense amounts of radiation from Ragnarok can live there.
Radius: 7529km
Rotational Period: 17.34 hours
Avg Temperature: 184K
Semi-Major: 451K km

-Skoll (Moon 2 of Ragnarok)-
Looks like Earth's Moon.
Radius: 3374km
Rotational Period: 14.656 hours
Avg Temperature: 260K
Semi-Major: 484K km

-Hati (Moon 3 of Ragnarok)-
Lots of sulphur.
Radius: 4757km
Rotational Period: 1.569 days
Avg Temperature: 275K
Semi-Major: 551K km

-Heimdall (Moon 4 of Ragnarok)-
A two-toned rocky moon. Nothing special.
Radius: 3072km
Rotational Period: 23.6 hours
Avg Temperature: 275K
Semi-Major: 611K km

-Fenrir (Moon 5 of Ragnarok)- INHABITED
A beautiful moon with large areas of forest, surrounded by vast mountain ranges and deserts. Small polar caps.
Radius: 2796km
Rotational Period: 22.95 hours
Avg Temperature: 260K
Semi-Major: 717K km

-Jormungand (Moon 6 of Ragnarok)- INHABITED
A very small moon with most of its surface covered in crystal clear blue water. The large islands that dot the surface are like a vacation destination for inhabitants of the system.
Radius: 1598km
Rotational Period: 23.45 hours
Avg Temperature: 275K
Semi-Major: 789K km

-Tyr (Moon 7 of Ragnarok)-
A nice icy world. The polar caps are very large and they extend far down towards the equator, leaving a wide strip of inhabitable landmasses and ocean.
Radius: 4249km
Rotational Period: 20.23 hours
Avg Temperature: 103K
Semi-Major: 809K km


8. Sleipnir-
A large, dark blue gas giant with red streaks.
Radius: 75559km
Rotational Period: 1.96 days
Avg Temperature: 208K
Semi-Major: 2897.1913AU
Moons: 2

-Hel (Moon 1 of Sleipnir)- INHABITED
A small, snowy moon with some hospitable land mass. Over half of the moon is covered in snow.
Radius: 2235km
Rotational Period: 1.41 days
Avg Temperature: 248K
Semi-Major: 299K km

-Niflhel (Moon 2 of Sleipnir)-
A terrafomation work-in-progress. Only algae is living there right now.
Radius: 2578km
Rotational Period: 1.89 days
Avg Temperature: 241K
Semi-Major: 391K km


9. Hreidmar-
Big, blue and beautiful gas giant. The giant swirl near its southern pole is about as wide as 8 Midgards.
Radius: 54766km
Rotational Period: 1.92 days
Avg Temperature: 208K
Semi-Major: 3063.0690AU
Moons: 4

-Fafnir (Moon 1 of Hreidmar)-
Appears as though the entire planet was once covered in water, then it froze, leaving massive blocks of ice frozen in place all over the surface.
Radius: 5776km
Rotational Period: 1.44 days
Avg Temperature: 261K
Semi-Major: 293K km

-Otr (Moon 2 of Hreidmar)-
A bluish cratered ball of ice.
Radius: 3219km
Rotational Period: 23.1 hours
Avg Temperature: 261K
Semi-Major: 337K km

-Regin (Moon 3 of Hreidmar)-
Barren and desolate, Regin has no distinguishing features.
Radius: 2353km
Rotational Period: 12.07 hours
Avg Temperature: 186K
Semi-Major: 394K km

-Sigurd (Moon 4 of Hreidmar)-
Large craters and gigantic swaths of ice mar the surface of this moon.
Radius: 2970km
Rotational Period: 19.52 hours
Avg Temperature: 254K
Semi-Major: 513K km


10. Hodmimir-
A white icy planet. Furthest from Odin.
Radius: 11769km
Rotational Period: 2.48 days
Avg Temperature: 199K
Semi-Major: 3841.0760AU
Moons: 2

-Lifthrasir (Moon 1 of Hodmimir)-
A ball of snow and ice. The entire moon is covered in snowy drifts and icy mountain ranges.
Radius: 1543km
Rotational Period: 1.88 days
Avg Temperature: 194K
Semi-Major: 129K km

-Lif (Moon 2 of Hodmimir)-
A tiny, crack-ridden moon of no consequence. At times, obviously, it is the furthest object from Odin. (Considering moons and planets only.)
Radius: 365km
Rotational Period: 1.22 days
Avg Temperature: 213K
Semi-Major: 196K km




So that's the official list of bodies so far. And after reading through it i have realized that most of the rotational periods of planets and moons and the Semi-major axes of most of the moons are wayyyy too close to their parent bodies. But it's taken me quite a while to get this list together, so for now i'll leave it and go work on those values and come back and edit this post to reflect the finished work later. I will also edit this list once i figure out the orbits for the two comets i am set on making: Hugin and Munin.

well anyway here's Odin. nothing special

i made lifthrasir and lif moons of a planet instead of having them on their own.

this addon is taking forever

That's a rather ambitious plan! Best of luck.

There are several fractal planet surface generators available which might help. Some are free, some are commercial.

selden wrote:That's a rather ambitious plan! Best of luck.

There are several fractal planet surface generators available which might help. Some are free, some are commercial.

thank you selden! i already have the orbits lined up everything looks good. i couldn't have done it without your awesome pages on creating addons!!! im stoked to see this system come into being. been working on it alllllll day long. i just need to get the textures down. i was wondering if you could direct me to a resource page or something similar? i need a good generator. what do you use?

I use planet, by Torben ?. Mogensen, which is reasonably good for rocky or Earth-like planets.

There are some descriptions of how to generate planet surfaces in the Tutorials forum.

selden wrote:I use planet, by Torben ?. Mogensen, which is reasonably good for rocky or Earth-like planets.

There are some descriptions of how to generate planet surfaces in the Tutorials forum.

ok thanks! i downloaded Planet. i just don't know how to use it. apparently i need MingW?

i think i had that before but i wasn't clear on how to use it or what it was for. John Van Vliet's tutorial on Planet is cool, but it doesn't really explain how to initiate the program with mingw. i know there's no GUI.

have you made any addons?

I use cygwin to do compilations under Windows, but it does require some familiarity with Unix and linux conventions.

Yes, I've created a few Addons myself. Some are on the Motherlode, some are elsewhere, some are still in progress after many years of not being able to get them just right...

Hi! I like such a mythological inspiration for a star sistem. I should see not bad the Odin's ravens (Hugin and Munin) like comets.

Fenerit wrote:Hi! I like such a mythological inspiration for a star sistem. I should see not bad the Odin's ravens (Hugin and Munin) like comets.

wow. excellent idea, my friend. i will implement that as soon as possible. thank you for the input! such an awesome idea!!!

selden wrote:I use cygwin to do compilations under Windows, but it does require some familiarity with Unix and linux conventions.

Yes, I've created a few Addons myself. Some are on the Motherlode, some are elsewhere, some are still in progress after many years of not being able to get them just right...

i've tried all day to figure out how to "compile" and run that planet program to no avail. i am just not as technically minded as others i guess. too complicated for me lol. i'll just have to find another way. thank you for your advice and help.

Odin, named after the major god in norse mythology

a very good name

and good luck on with this brilliant solar system

For textures, I usually use Photoshop.You might want to start by altering a few high-resolution maps of real planets. And by alter I mean use the clone tool to change the planet's surface, not simply recolor. Maybe then you should overlay a few on each other, desaturate, and use that as a base height map for one of the planets.

... and please, be cautious of the poles ! Mapping a texture on a sphere is difficult, since you may have the bad "polar pinch" effect. Try to use some good textures which don't have this problem in Celestia, cut its poles to paste it on your custom texture (and use some blending for better results).

The poles is what makes planet textures difficult to do.

I used the excellent planet Alien Skin plug-in for Photoshop to do nice looking poles, instead of copying the usual textures (Mars is too much copied, and it shows on most fictious textures you may found around).

John wrote a tut on the poles using Gimp here - http://www.shatters.net/forum/viewtopic.php?f=21&t=16087

Tim

kristoffer wrote:Odin, named after the major god in norse mythology

a very good name

and good luck on with this brilliant solar system

thank you sir! i noticed you are a fellow na'vi.
smon niprrte'!

i like your signature links.


i have been working on this addon for the better part of the past few weeks. every night i am constantly messing with it to get it to be really nice. i like the textures, which i shamelessly ripped from other addons because i lack the creative means to make my own. i also lack funds for photoshop and other various programs to create nice textures. so until i can truly make my own textures, i am using others. i ultimately want to make my own because this is my own fictional system. it's unique to user-created celestia addons as far as i can tell.

updated body list below!

You don't need to spend money to get a decent paint program.
Paint.net is reasonably good. Gimp is a more sophisticated paint program, but somewhat harder to learn.

selden wrote:You don't need to spend money to get a decent paint program.
Paint.net is reasonably good. Gimp is a more sophisticated paint program, but somewhat harder to learn.

i will try paint.net thank you
i have gimp but i haven't come across any "clone" type functions yet. i'll have to mess with it when i wake up.




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also when i wake up i'll have an updated list of the bodies of the Odin system!!! with details and such. i'll probably delete my older posts of the list because it'd be confusing. i also cleaned up the orbits so that earlier screenshot with all the nasty orbits will be much nicer. will post a screenshot as well of the new system.

i have two comets to put in place (Hugin and Munin) as suggested by a previous poster.

i have approx 20? (i think, can't remember right now..) asteroids or perhaps minor moons or dwarf planets that i want to implement as well. they are all named after Norse Valkyries. so they'll be like little norse angels flying around the system. probably split them up between asteroids, dwarf planets and minor moons, who knows. maybe use some meshes or cmods? don't know yet.

let me know what you think guys

thanks

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