Re: Search elements of suspected Helios 2B-related UNID

From: Gerhard HOLTKAMP (
Date: Tue Aug 24 2010 - 18:34:33 UTC

  • Next message: Marco Langbroek: "Re: Search elements of suspected Helios 2B-related UNID"

    On Tuesday 24 August 2010 16:36, Patrick Schmeer wrote:
    > And is there any software available to
    > determine a CIRCULAR satellite orbit from
    > just two points?
    SatCal is one of the programs able to do that by either entering the 
    coordinates of the two endpoints directly or by clicking on the endpoints of 
    a trail on a picture (which has to be initialized beforehand). (The  
    respective times and observation site coordinates must be entered also, of 
    But those two observation points would have to be very precise (especially the 
    timing) in order to find the satellite again the next night (and get a much 
    more precise fix).
    Gerhard HOLTKAMP
    Darmstadt, Germany  
    Seesat-l mailing list

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