USA 161 - Illusive, Elusive and now Recovered...?

From: Scott Tilley (sthed475@telus.net)
Date: Mon Sep 12 2011 - 09:32:31 UTC

  • Next message: Kevin Fetter: "Sea launch return's"

    Hi All
    
    I caught a suspect emerging from eclipse at the time and on the track 
    that pretty much matched the elsets offered by Ted below.
    
    70031 01 044A   8048 G 20110912073326154 15 25 0737820+485862 37 E
    70031 01 044A   8048 G 20110912073350445 15 25 0809985+494009 37 S+070 10
    70031 01 044A   8048 G 20110912073403025 15 25 0824386+494452 37 S
    70031 01 044A   8048 G 20110912073411566 15 25 0834388+494389 37 S
    70031 01 044A   8048 G 20110912073437159 15 25 0902521+491539 37 S
    70031 01 044A   8048 G 20110912073441263 15 25 0906357+490892 37 S
    
    Fullish moon was very bright, but the sky was very clear and clean so 
    obs conditions not that bad for the video system.  In binos it was a bit 
    of a struggle...
    
    Video here:
    http://dl.dropbox.com/u/15916951/SATOBS/USA161_Sept12.wmv
    
    Someone asked why I observe satellites...  It's the beauty of watching a 
    man's reason predict something correctly based on a methodical 
    observance to the Method and being a small part of it!  Congrats Ted, 
    steely eyed missile man!
    
    Regards,
    Scott Tilley
    
    ROBERTS CREEK 1:
    8049 ST 49.4348 -123.6685 40. Scott Tilley
    ROBERTS CREEK 2:
    8048 ST 49.4175 -123.6420 1. Scott Tilley
    
    On 9/11/2011 11:54 AM, Ted Molczan wrote:
    > Good afternoon everyone,
    >
    > The following orbit reasonably fits all of the visual observations reported to-date, except for Björn's of Aug 31. List
    > of obs fit appended.
    >
    > USA 161                                                  228 X 820 km
    > 1 70030U          11250.93802561  .00023392  00000-0  10290-3 0    00
    > 2 70030  97.7689   4.5330 0429053 198.6288 159.8973 15.13040690    09
    > Arc 20110831.01-0907.95 WRMS resid 0.200 totl 0.155 xtrk
    >
    > Narrowing the arc to Sep 01-06, to include what probably are the most precise points, yields:
    >
    > USA 161                                                  276 X 772 km
    > 1 70031U          11249.28471851  .00024590  00000-0  25716-3 0    01
    > 2 70031  97.7273   2.6497 0358946 218.5854 138.9226 15.12970956    00
    > Arc 201109011-0906.3 WRMS resid 0.048 totl 0.025 xtrk
    >
    > This solution remains in close agreement with Pierre's obs of Aug 31 (time and track) and Björn's (time).
    >
    > These solutions nicely eliminate the discrepancy in plane that I described last night; in fact, that is what led me to
    > them. I wondered what mean motion would have been required on Aug 24 (the date of the first (only?) manoeuvre, to
    > account for the more easterly plane of the recently observed object, which turned out to be ~15.15 rev/d.
    >
    > I recommend using the 70031 elset tonight, allowing at least 1 min time, 1 deg track.
    >
    > Best wishes,
    > Ted
    >
    >
    > 0104401 2563 110831 00172697  01   12134368  +830018  60 4             +15+25     I
    > 26934 01 044A   4353 G 20110901235502300 17 75 0414547+795930 56 S+020 10
    > 26934 01 044A   4353 G 20110901235512350 17 75 0538144+813250 56 S+020 10
    > 26934 01 044A   4353 G 20110901235522300 17 75 0717180+815600 56 S+020 10
    > 26934 01 044A   4353 G 20110901235532350 17 75 0838446+804580 56 S+020 10
    > 0104401 2563 110901 23554060  01   12081670  +723840  20 4             +35+45     I
    > 0104401 2563 110901 23560526  01   12092670  +694320  50 4             +55        S
    > 0104401 2563 110901 23563491  01   12101465  +652280  15 4             +65        I
    > 0104401 2420 20110903 233354.09 050330+501454 5.9 5.9 0 S
    > 0104401 2420 20110903 233616.41 091048+525431 6.9 6.9 0 S
    > 70020 01 044A   8048 G 20110906070754487 17 25 0647251+444161 37 S
    > 99161 99 161ZZ  8048 G 20110906070800493 15 25 0653805+445915 37 S
    > 99161 99 161ZZ  8048 G 20110906070802762 15 25 0655929+450639 37 S
    > 70020 01 044A   8048 G 20110906070802762 17 25 0655938+450535 37 S
    > 99161 99 161ZZ  8048 G 20110906070806098 15 25 0659029+451504 37 S
    > 99161 99 161ZZ  8048 G 20110906070809735 15 25 0702565+452680 37 S
    > 70020 01 044A   8048 G 20110906070814006 17 25 0707540+453246 37 S
    > 70020 01 044A   8048 G 20110906070818744 17 25 0712382+454449 37 S
    > 70020 01 044A   8048 G 20110906070821880 17 25 0715289+454972 18 S
    > 70001 01 044A   5919 G 20110907224828350 27 25 0209430+721285 19 S
    > 70001 01 044A   5919 G 20110907224853510 27 25 0431692+824959 28 S
    >
    >
    
    _______________________________________________
    Seesat-l mailing list
    http://mailman.satobs.org/mailman/listinfo/seesat-l
    



    This archive was generated by hypermail 2b29 : Mon Sep 12 2011 - 09:33:05 UTC