Further problems with NORAD/Celestrak TLEs

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  • October 2, 2018 at 8:19 am #12332
    Nigel AtkinsonNigel Atkinson
    Moderator

    On the Space-track and Celestrak web sites, TLEs from some polar-orbiting satellites are currently being reported with validity times 10 days in the future. This has happened before – see posting from October 2017.

    Space-track are aware of the issue and say they are working to correct it.

    As a workaround, it is possible to retrieve valid TLEs by specifying a date range in the web interface and selecting the most recent bulletin. The erroneous TLEs are not reported, even if you give an end date in the future, e.g. for NOAA-20 …

    https://www.space-track.org/basicspacedata/query/class/tle/EPOCH/2018-09-25–2018-10-10/NORAD_CAT_ID/43013/orderby/TLE_LINE1%20ASC/format/tle

    giving

    1 43013U 17073A 18274.43880788 .00000015 00000-0 27722-4 0 9997
    2 43013 98.7315 211.2110 0000817 68.1826 291.9437 14.19547884 44982

    It is recommended to use EUMETSAT TLEs wherever possible (i.e. for Metop-A/B, NOAA-15/18/19, S-NPP), see http://oiswww.eumetsat.org/metopTLEs/html/index.htm

    Nigel

    October 5, 2018 at 8:58 am #12335
    Nigel AtkinsonNigel Atkinson
    Moderator

    This issue has now been fixed. Space-track and Celestrak bulletins are correct.

    If you received any of the bad bulletins, you should check your AAPP tle_*.index files and delete any entries that refer to an epoch that is in the future.

    Nigel

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