Re: UNID in Orion

From: Greg Roberts (
Date: Tue Feb 15 2011 - 08:35:52 UTC

  • Next message: Ian Roberts: "Geosat log 14 Feb 2011"

    Morning again John
    Ive had a look at your image and tried to find a match using date as Feb 14, 
    time 1838-1843 UT and your location given.
    I dont find a perfect match - there were four geosats in that area.
    However the best fit appears to be DSCS2-12  78113B  #11145 as its track 
    angle puts it close to the trajectory taken. CANYON 1 is a bit too far away 
    and the other two possibilities have incorrect track angles.
    The problem is Im not sure a DSCS can appear as bright as mag +2. I cant 
    ever recall seeing them anywhere near this so Im not convinced
    this is the candidate. Maybe you were lucky to catch a flare - if these 
    satellites do in fact flare.
    Maybe, if you get a clear sky again in the very near future- next day or 
    two - try the same area again and see if you can get it again- the event 
    "repeats" about 4 minutes earlier each night ( due to earths rotation rate 
    of 23h56min). However I think this will need a fair bit of luck.
    Your field of view was approximately 34 x 26 degrees.
    So for the moment thats the best I can come up with.
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