1968-081R matches ESA/ISON UI.89

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Mon Feb 11 2013 - 03:40:02 UTC

  • Next message: Kevin Fetter: "Essaim 3 and ORS 1 obs"

    In mid-2012, USSTRATCOM catalogued 16 pieces from the fragmentation of the Transtage 1968-081E / 3432. They are
    1968-081Q / 38690 through 1968-081AF / 38705. The orbit of 1968-081R / 38691 matches that of the unidentified object
    known as ESA/ISON UI.89, which has the hobbyist TLE ID 96589A / 96089.
    
    The following TLE was derived from the osculating elements in ESA's Classification of Geosynchronous Objects Issue 14:
    
                                                         34876 X 36457 km
    1 96089U 96589A   12001.00000000  .00000000  00000-0  00000-0 0    06
    2 96089   8.1515 325.0677 0188022 252.7649 264.3140  1.00704364    05
    
    ESA/ISON UI.31 also appears to correlate with the break-up of 1968-081E, but none of the publicly catalogued USSTRATCOM
    TLEs of 1968-081 match it. Below is the latest hobbyist TLE:
    
                                                         34410 X 36262 km
    1 96031U 96531A   12294.06991117  .00000000  00000-0  00000-0 0    08
    2 96031   6.4730 315.9645 0222055 237.6618 120.1816  1.01905138    00
    
    In the course of my analysis, I found several TLEs of 1968-081E proximate to the epoch of the breakup (92052.396527778)
    in TLE printouts I received from NASA/GSFC/OIG, that do not currently appear in USSTRATCOM's Space Track database or in
    Jonathan McDowell's archive. I share them in the interest of preserving the historical record:
    
    1 03432U 68081E   92 49.14605797  .00000057  00000-0  99999-4 0  9528
    2 03432  11.8706  21.3638 0084496  75.6351 285.9710  1.01464205 12466
    1 03432U 68081E   92 58.01126493 -.00000090  00000-0  99999-4 0  9545
    2 03432  11.9226  21.3788 0079758  79.9124 280.8642  1.01521566 12552
    1 03432U 68081E   92 64.90641668 -.00000184  00000-0  99999-4 0  9584
    2 03432  11.9252  21.5344 0079497  79.7492 281.0175  1.01524627 12620
    
    Below are the scanned source pages:
    
    http://satobs.org/seesat_ref/misc/1968-081E_TLE_source.pdf
    
    OIG issued the printouts weekly. They consisted of the latest TLE received from USSTRATCOM, mainly of payloads and
    rocket bodies in orbit. A few pieces of orbiting debris requested by users were also included.
    
    Ted Molczan
    
    
    _______________________________________________
    Seesat-l mailing list
    http://mailman.satobs.org/mailman/listinfo/seesat-l
    



    This archive was generated by hypermail 2b29 : Mon Feb 11 2013 - 03:40:33 UTC