Re: Bulk Catalog Corrupted

From: Björn Gimle (bjorn.gimle@gmail.com)
Date: Sun Jan 15 2012 - 11:47:16 UTC

  • Next message: Harro Zimmer: "Decay Forecast Phibos Grunt"

    There were lots, possibly hundreds, of elsets for Jan.5 missing leading
    zeroes in the day number part.
    For 20710, a new elset with almost the same epoch was subsequently issued.
    You can find them on a Selected Timespan search with Start Epoch  2012 1 5
    but End Epoch 2012 1 6 (or later) only !
    SkyMap ignores the difference, and actually displays them without leading
    zeroes always.
    
     Norad #20710  Int'l ID: 90064D    Orbit # 16023   StdMag:  6.6
     Name:  "SL-6 R/B(2)"
     Epoch day/date:          12  5.58152623 [2012/1/5 13:57:24]
     Inclination:              64.8593
     Right Ascension:         104.1753
     Eccentricity:            .6954942
     Argument of perigee:     165.0485
     Mean anomaly:            237.0834
     Mean motion (revs/day):   2.04554842
     Mean motion of accel.:   -.000009200
     Mean motion 2nd deriv.:  0.0000000000
     SGP4 drag coefficient:   0.000100000
    
     Ephemeris age relative to map date (days):      8.30
     Uncertainty in mean motion of acceleration:   20.0%
     Along-track uncertainty:   5.4 secs
    
    2012/1/14 satrack@libero.it <satrack@libero.it>
    
    > Am I wrong or the bulk catalog (three line format) at Space-Track contains
    > a corrupted TLE forsatellite norad 20710 (SL-6 R/B 2, 90064D) ?
    > The Epoch field is malformed.
    >
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