RE: ORS-1 search elements

From: Derek C Breit (breit_ideas@poyntsource.com)
Date: Wed Aug 17 2011 - 18:07:33 UTC

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    With these two elesets, I have two passes, at 8:30 and 10:00 PDT (3:30 and
    5:00 UT) ish..
    
    It may be too bright of a sky at 8:30, for what I am going to try, so we can
    assume I'll aim for the 10:00PM pass.. Plus my original goal is to catch
    NanoSailD in an eastern sky pass at 8:40 PDT. I'll try 8:30 for ORS-1 and we
    shall see.
    
    Therefore, if anyone sees it before then, PLEASE let me know and remember it
    may take a sledgehammer for me to realize you are talking about this object.
    
    ORS-1 works.. :-))
    
    Derek
    
    -----Original Message-----
    From: seesat-l-bounces+breit_ideas=poyntsource.com@satobs.org
    [mailto:seesat-l-bounces+breit_ideas=poyntsource.com@satobs.org] On Behalf
    Of Ted Molczan
    Sent: Wednesday, August 17, 2011 10:38 AM
    To: seesat-l@satobs.org
    Subject: RE: ORS-1 search elements
    
    Derek Breit has reported (off-list) a possible sighting near 2011 Aug 17
    04:21:45 UTC, ~3 min early and more than 2 deg
    off track. Scott Tilley saw nothing while searching at about the same time,
    but he was much farther from the track. I
    searched near 01:19 UTC (-60 s to +180 s) and saw nothing.
    
    The track that Derek reported implies an improbably large error in the
    plane, so I have altered only the altitude to
    account for the early arrival:
    
    1 73706U          11229.16972919  .00014985  00000-0  21617-3 0    02
    2 73706  40.0000 201.5886 0000766 213.4824 146.5940 15.55036988    01
    
    Increasing the RAAN to ~202.9 deg would better fit the observation.
    
    I recommend using the above (with either RAAN) in addition to the earlier
    search TLE:
    
    1 73705U          11226.02477666  .00014884  00000-0  21617-3 0    00
    2 73705  40.0000 221.0206 0001168 189.0849 170.9942 15.54853139    02
    
    Happy hunting!
    Ted Molczan
    
    
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