# Celestia Add-on for Gliese 581 (alternate name Wolf 562) # Place this file in the Celestia extras folder # For versions of Celestia newer than 1.3 comment out the b description # For version of Celestia 1.5 and up comment out b and C # Gas giant radii are usually unknown and I have aproximated 581b,d from their solar analogs # The radius of Gliese 581c and other data comes from the paper # "The HARPS search for southern extra-solar planets : XI. An habitable super-Earth (5 # MEarth) in a 3-planet system", by S. Udry et al. # http://obswww.unige.ch/~udry/udry_preprint.pdf # Update 22-04-09 Gliese 581e is now added. Information is from this paper # http://www.exoplanets.ch/Gl581_preprint.pdf # Orbital data for Gliese 581d is also updated "b" "Wolf 562" { #Texture "gasgiant.jpg" #NightTexture "gasgiantnight.jpg" #Uncomment these textures if you are using Celestia 1.3 or earlier #Comment out entire section if using Celestia 1.4 or higher Texture "exo-class4.*" NightTexture "exo-class4night.*" Mass 15.6 # M.sin(i) = 15.6 Earth Radius 25559 # Based on Uranus InfoURL "http://exoplanet.eu/planet.php?p1=Gl+581&p2=b" EllipticalOrbit { Period 0.0147 SemiMajorAxis 0.041 Eccentricity 0.02 ArgOfPericenter 273 MeanAnomaly 83 #use default } # likely to be in captured synchronous rotation } AltSurface "limit of knowledge" "Wolf 562/b" { Texture "extrasolar-lok.jpg" } "c" "Wolf 562" { Texture "ganymede.*" # Using Ganymede as it may be giant ice world # NightTexture "gasgiantnight.jpg" Mass 5.07 # M.sin(i) = 5.07 Earth Radius 9567 # 1.5 Earth radi, from paper InfoURL "http://exoplanet.eu/planet.php?p1=Gl+581&p2=c" EllipticalOrbit { Period 0.0354 SemiMajorAxis 0.073 Eccentricity 0.16 ArgOfPericenter 267 MeanAnomaly 83 } # likely to be in captured synchronous rotation } AltSurface "limit of knowledge" "Wolf 562/c" { Texture "ganymede.*" OverlayTexture "ganymede-lok-mask.png" } "d" "Wolf 562" { #Texture "gasgiant.jpg" #NightTexture "gasgiantnight.jpg" #Uncomment these textures if using Celestia 1.3 or earlier Texture "exo-class4.*" NightTexture "exo-class4night.*" Mass 8.34 # M.sin(i) = 8.3 Earth Radius 24766 # Based on Neptune InfoURL "http://exoplanet.eu/planet.php?p1=Gl+581&p2=d" EllipticalOrbit { Period 0.18289 SemiMajorAxis 0.22 Eccentricity 0.38 ArgOfPericenter 295 MeanAnomaly 83 } } AltSurface "limit of knowledge" "Wolf 562/d" { Texture "extrasolar-lok.jpg" } "e" "Wolf 562" { #Texture "gasgiant.jpg" #NightTexture "gasgiantnight.jpg" #Uncomment these textures if using Celestia 1.3 or earlier Texture "mercury.*" NightTexture "mercurynight.*" Mass 1.9 # M.sin(i) = 8.3 Earth Radius 12756.28 # Based on 2xEarth InfoURL "http://exoplanet.eu/planet.php?p1=Gl+581&p2=d" EllipticalOrbit { Period 0.008622 SemiMajorAxis 0.03 Eccentricity 0.0 ArgOfPericenter 0 MeanAnomaly 83 } } AltSurface "limit of knowledge" "Wolf 562/e" { Texture "mercury.*" OverlayTexture "mercury-lok-mask.png" }