Re: [stellarium:discussion] Asteroid 2012 DA14 flyby

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Mike
2013-02-02
2013-02-16
  • Mike

    Mike - 2013-02-02

    Thanks Barry....... I'm afraid that sort of thing is beyond me at the moment.......... :) Heavens-above site shows the track of it, so I may be able to work something from that combined with a Stellarium screengrab on good oldfashioned paper :)

    Cheers

    Mike
    Mike Constantine
    Timaru New Zealand

    ----- Original Message -----
    From: barrykgerdes
    To: [stellarium:discussion]
    Sent: Sunday, February 03, 2013 10:26 AM
    Subject: [stellarium:discussion] Asteroid 2012 DA14 flyby

    The present method of calculating general orbits in stellarium is either comet_orbit or ell_orbit. These routines using oscillating elements are good enough for distant objects but are quite inaccurate for near earth passes.

    Asteroid 2012DA14 will need a 2012DA14_special routine that is not present in Stellarium at present.

    Barry


    Asteroid 2012 DA14 flyby


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    • Anonymous - 2013-02-13

      Thanks Barry that was exactly what I wanted to know. Now to search for this new Comet that fell out of the Ort cloud recently.

      Rick
      https://plus.google.com/111786760440874610265

       
  • Anonymous - 2013-02-15

    Bummer.
    I came here looking for answer on how to hopefully spot asteroid 2012 DA14 in my Stellarium...

    Oh well. Now I guess I'll just have get up off my lazy ass and actually go outside with my trusty binoculars.
    ;-)

     
  • Anonymous - 2013-02-15

    Previous post was me too: With help from Astroblog (http://astroblogger.blogspot.co.uk/2013/02/c2012-da14-in-celestia.html) and using guide on Stellarium wiki (http://www.stellarium.org/wiki/index.php/JPL_HORIZONS) and HORIZONS web-interface (http://ssd.jpl.nasa.gov/horizons.cgi), I have managed to program Asteroid 2012 DA14 into my Stellarium! The Astroblog also shows a guide for programming 2012 DA1 into Celestia, which works too.

    Add following text to "ssystem.ini" file. The file is located at "C:\Users\"YOUR USERNAME HERE"\AppData\Roaming\Stellarium\data\". Note: > indicates a new line in the ini file:

    [2012DA14]

    Data taken from JPL/HORIZONS

    name = 2012 DA14
    parent = Sun
    coord_func = comet_orbit
    radius = 10
    oblateness = 0.0
    albedo = 1
    lighting = true
    halo = true
    color = 1.0,1.0,1.0
    tex_halo = star16x16.png
    tex_map = nomap.png
    orbit_Epoch = 2456084.5500000000
    orbit_TimeAtPericenter = 2456199.431669226382
    orbit_PericenterDistance = 0.8251566657007006
    orbit_Eccentricity = 0.09222268090579987
    orbit_ArgOfPericenter = 197.5168093259557
    orbit_AscendingNode = 147.1069671422395
    orbit_Inclination = 12.66183659065749

     


Anonymous

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