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  1. #1
    SatSeeker's Avatar
    SatSeeker Guest

    Default Help finding satellite prediction tools



    Hi Everyone,

    I am new in this science and wanted to learn more about it. Currently,
    I have been trying to see satellites with my telescope and using jtrack
    to predict when they pass by. Also to plan where you can see them from
    the earth.

    Now I want to write a Java program to predict satellites as they pass
    by and plot them on a map. Unfortunately, I have not found any
    resource to help with the Keplerian elements in the TLE files. I found
    JOSAST, but it did not have enough documentation written down to my
    level of space science.

    Does any one know or can they point me in the right direction to find
    these resources?

    Thanks,

    Dean


  2. #2
    Ted Molczan's Avatar
    Ted Molczan Guest

    Default Help finding satellite prediction tools

    "SatSeeker" <slowdown101@hotmail.com> wrote in message
    news:1106849106.347213.276930@z14g2000cwz.googlegr oups.com...

    Have you checked Dr. T.S. Kelso's web site?:

    http://celestrak.com/software/tskelso-sw.asp

    http://celestrak.com/columns/

    Ted Molczan



  3. #3
    Vince Fiscus, KB7ADL's Avatar
    Vince Fiscus, KB7ADL Guest

    Default Help finding satellite prediction tools

    "SatSeeker" <slowdown101@hotmail.com> wrote in
    news:1106849106.347213.276930@z14g2000cwz.googlegr oups.com:




    Hi Dean,

    Also see: http://www.amsat-na.com/category.php?c=Software

    A software purchase from Amsat, a non-profit organization, will help them
    build and launch satellites.

    Vince, KB7ADL

  4. #4
    JATO's Avatar
    JATO Guest

    Default Help finding satellite prediction tools

    This is what I use. http://www.heavenscape.com/
    If you have a computer controlled scope it may be on the list of supported
    scopes. I get my TLEs direct from NASA's website every 30 days
    http://oig1.gsfc.nasa.gov/scripts/fo...DFG9YYIMSG1RBW


    -JATO
    http://jatobservatory.org

  5. #5
    SatSeeker's Avatar
    SatSeeker Guest

    Default Help finding satellite prediction tools

    Thanks Vince,

    This is close to what I am looking for. I guess I need a Java version
    of a propagator now. The computers I have available have a variety of
    operating systems (Windows, Linux, and sometime Mac). Which makes it a
    bit tricky for having a single application run on. But if I can find
    this Java version of a satellite propagator, I should be good.

    By being Java, I can cut a CD of my application and have it run on
    either of the computer operating systems.

    Oh, Thanks Ted and JATO. The references to Dr. T.S. Kelso's web page
    was handy in teaching me a lot more about satellites as well as where
    to get the TLEs.

    This is a really cool science and keeps on getting interesting each
    day.

    If you hear of a Java implementation of a propagator and interpolator,
    please keep me in mind.
    Thanks again everyone for your help.

    Dean


  6. #6
    Ted Molczan's Avatar
    Ted Molczan Guest

    Default Help finding satellite prediction tools

    "SatSeeker" <slowdown101@hotmail.com> wrote in message
    news:1106973579.784072.147330@c13g2000cwb.googlegr oups.com...

    TLEs (2-line elements) are based on the SGP4 orbit propagation model. In
    case you overlooked it, T.S. Kelso provides a link to a Java source code
    version of SGP4, included in the program passfinder, developed by Pedro J.
    Fernandez:

    http://celestrak.com/software/tskelso-sw.asp

    Ted Molczan



  7. #7
    SatSeeker's Avatar
    SatSeeker Guest

    Default Help finding satellite prediction tools

    Thanks! It looks like what I have been searching for.

    Dean


  8. #8
    SatSeeker's Avatar
    SatSeeker Guest

    Default Help finding satellite prediction tools

    Thanks! It looks like what I have been searching for.

    Dean


 

 

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