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    Re: Stellarium & Comets
    From: Peter Monta
    Date: 2022 Jan 08, 02:38 +0000
    Hi Bob,

    The MPC comet orbital element format is documented here:


    You'll want the second of the two formats (Ephemerides and Orbital Elements Format).

    Alternatively, you can use the friendlier format that Stellarium uses internally.  On Linux, the file of solar-system minor bodies lives in ~/.stellarium/data/ssystem_minor.ini.  You can just add your comet to this file and restart.  For example, one of the comets that's in my copy of the file is:

    [1I_Oumuamua]
    # source = https://www.nature.com/articles/nature25020/tables/1 and https://en.wikipedia.org/wiki/%CA%BBOumuamua
    absolute_magnitude             = 22.08
    albedo                         = 0.07
    name                           = 1I/2017 U1 (`Oumuamua)
    orbit_ArgOfPericenter          = 241.43
    orbit_AscendingNode            = 24.6056
    orbit_Eccentricity             = 1.1956
    orbit_Inclination              = 122.545
    orbit_PericenterDistance       = 0.25383
    orbit_TimeAtPericenter         = 2458005.961
    orbit_good                     = 3600
    coord_func                     = comet_orbit
    radius                         = 0.102
    type                           = interstellar object

    Cheers,
    Peter


       
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