HD 209458b (Osiris)

General discussion about Celestia that doesn't fit into other forums.
Topic author
Tosv

HD 209458b (Osiris)

Post #1by Tosv » 07.11.2004, 19:07

Sorry about the grammar, but I?m quite tired right now... *yawn*

This evening i was reading an article about the planet osiris (HD 209458b), the only planet outside our solar system that we have been able to measure an atmosphere for.

My question is now, do we know so much about this planets atmosphere that we can create a special texture for it? I?m not a scientist, but we know that the atmosphere consists of sodium, hydrogen, oxygen and carbon and, as far as I understand, this also determines the appearance of the planet. The reason I ask this is that the planet, as beeing the only extrasolar planet with an known atmosphere, is quite unique and would be interesting to have in Celestia.

symaski62
Posts: 610
Joined: 01.05.2004
Age: 41
With us: 20 years 6 months
Location: france, divion

Post #2by symaski62 » 07.11.2004, 19:42

windows 10 directX 12 version
celestia 1.7.0 64 bits
with a general handicap of 80% and it makes much d' efforts for the community and s' expimer, thank you d' to be understanding.

ajtribick
Developer
Posts: 1855
Joined: 11.08.2003
With us: 21 years 3 months

Post #3by ajtribick » 07.11.2004, 23:04

I created a really simple add-on for this planet, you need the empty.3ds model from http://www.lns.cornell.edu/~seb/celestia/hutchison/empty.3ds for this to work properly although I suspect not having this file will have much the same effect.

Save the following code to a .ssc file in the extras directory:

Code: Select all

"b Atmosphere Evaporation" "HD 209458"   # V376 Peg

{
   Class "comet"
   Mesh "empty.3ds"
   Radius 0.42         # to get the comet tail the right size

   InfoURL "http://www2.iap.fr/exoplanetes/index_en.html"

   EllipticalOrbit {
      Period          0.0097
      SemiMajorAxis   0.044103
      Eccentricity    0
      Inclination     71.7
      AscendingNode   325.1
      ArgOfPericenter 205
      MeanAnomaly     148
   }

   Albedo 0
}


I am not going to even try to defend the realism of this though, it just looks approximately right on my system...

Topic author
Tosv

Post #4by Tosv » 10.11.2004, 09:10

Thanks guys! :)


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