Re: Re: Extracting Long/Lat from TLE's

From: Anthony Ayiomamitis (anthony@perseus.gr)
Date: Mon May 28 2001 - 08:32:13 PDT

  • Next message: Bjoern Gimle: "Re: 9506601"

    > Date: Mon, 28 May 2001 00:17:00 -0400
    > From: JAY RESPLER <jrespler@superlink.net>
    > To: SeeSat-L <SeeSat-L@blackadder.lmsal.com>
    >
    > Anthony Ayiomamitis wrote:
    > >       How would one go about extracting a satellite's longitude and
    > > latitude from the TLE's?
    >
    
    Hi Jay,
    
    > I used to use MrOrbit. That has a function giving lat/long.
    
    Thanks for the lead ... I will locate it and go from there ...
    
    > >       I am interested in writing some software to basically parse a
    > > geosat TLE file and produce a list of corresponding longitudes and
    > > latitudes. I would like to produce results, if possible, accurate to
    > > within one and, preferably, two decimal places.
    >
    > Unless you just want the exercise, software already exists.
    
    I wouldn't mind going through it myself for the sake of education. Never too old to
    learn ... :-)
    
    > >       I am setting the stage for a mini-project involving the
    > > photography of geosat constellations and would like to be able to
    > > generate the above-mentioned results at a whim's notice so as to plan my
    > > photo sessions and photo composition/framing.
    >
    > As mentioned before, you don't need lat/long. You do want azimuth/
    > elevation. The best way to do that is use a prediction program
    > like HIGHFLY. You may then make predictions at a moment's notice.
    
    I did pursue your earlier advice and did download HIGHFLY from Mike's site and have
    already generated summary results.
    
    > --
    > Jay Respler
    
    Anthony.
    
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