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Old 30-01-2009, 06:07 PM
Barrykgerdes
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Barrykgerdes is offline
 
Join Date: Feb 2007
Location: Beaumont Hills NSW
Posts: 2,900
Quote:
Originally Posted by pulimbatata View Post
So thank you very much Barry! Just one more question, can you explain me what these data means:

orbit_TimeAtPericenter
orbit_PericenterDistance
orbit_Eccentricity
orbit_ArgOfPericenter
orbit_AscendingNode
orbit_Inclination
lighting = false
albedo
orbit_visualization_period

and how or where can I find that kind of information for other celestial bodies? And how can I change the magnitude of a celestial body on stellarium?

Thanks a lot again
Hi Paulo

I am no expert on this. However the first six items are orbital parameters that are used in the program to calculate the instantanious position of the comet.

lighting = false has something to do with how it is displayed.
albedo is the reflectivity of the object
and orbit_visualization_period is how much of the total orbit is to be displayed.

I just get the orbital parameters as provided and place them in the corresponding field of the program.

The magnitude is calculated mainly from observations and depends on the size of the object, reflectivity, distance, absolute magnitude etc.

Barry
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