Re: This is why I am happy observer tonight = unid sat

From: C. Bassa (cgbsat@gmail.com)
Date: Sun Sep 01 2013 - 14:10:42 UTC

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    This turns out to be the same object that Kevin saw on July 25th
    [99212/13706B] and July 31st [99215/13712B]
    (http://www.satobs.org/seesat/Jul-2013/0188.html,
    http://www.satobs.org/seesat/Aug-2013/0001.html).
    
    Kevin provided a 10 minute video from his August 30th observation and
    I obtained 56 positions from it (see below). These now span a
    significant part of the orbit, which constrains the mean motion. By
    searching over a large range in mean motion and eccentricity, I find
    that for the August 30th observations the best fit mean motion is
    about 2.33 revs/day at an eccentricity of 0.718.
    
    This object is in an orbit which repeats almost exactly every 6 days
    and Kevin has seen it in the same area of the sky each time. There
    were 6 days separating his July 25th and 31st observation and 30 (5x6)
    days between July 31st and August 30th. The mean motion estimate of
    2.33 revs/day suggests that the object made 14 revolutions between the
    July 25th 31st observation.
    
    This is my best estimate for the orbit, determined from the July 31st
    and August 30th observations.
    
    Unknown 20130725B
    1 99212U 13706B   13242.06553324  .00000000  00000-0  00000-0 0    03
    2 99212  28.0341 237.9415 7177656 355.9047  12.0533  2.34137793    09
    
    I hope someone has a good pass and sees it.
    
    The observations from August 30th are below.
    
    Regards,
       Cees
    
    99216 13 742A   1775 G 20130830013041902 17 25 2105075-070239 37 S
    99216 13 742A   1775 G 20130830013046924 17 25 2106663-064765 37 S
    99216 13 742A   1775 G 20130830013052713 17 25 2108476-063040 37 S
    99216 13 742A   1775 G 20130830013056917 17 25 2109791-061843 37 S
    99216 13 742A   1775 G 20130830013101922 17 25 2111347-060407 37 S
    99216 13 742A   1775 G 20130830013106927 17 25 2112863-055003 37 S
    99216 13 742A   1775 G 20130830013111949 17 25 2114381-053601 37 S
    99216 13 742A   1775 G 20130830013116937 17 25 2115870-052219 37 S
    99216 13 742A   1775 G 20130830013121925 17 25 2117345-050848 37 S
    99216 13 742A   1775 G 20130830013126948 17 25 2118820-045489 37 S
    99216 13 742A   1775 G 20130830013132052 17 25 2120301-044124 37 S
    99216 13 742A   1775 G 20130830013141945 17 25 2123143-041560 37 S
    99216 13 742A   1775 G 20130830013146968 17 25 2124549-040270 37 S
    99216 13 742A   1775 G 20130830013202032 17 25 2128719-032496 37 S
    99216 13 742A   1775 G 20130830013206987 17 25 2130083-031326 37 S
    99216 13 742A   1775 G 20130830013211992 17 25 2131425-030128 37 S
    99216 13 742A   1775 G 20130830013216981 17 25 2132747-024928 37 S
    99216 13 742A   1775 G 20130830013222052 17 25 2134086-023740 37 S
    99216 13 742A   1775 G 20130830013226957 17 25 2135366-022595 37 S
    99216 13 742A   1775 G 20130830013231946 17 25 2136652-021451 37 S
    99216 13 742A   1775 G 20130830013237050 17 25 2137968-020316 37 S
    99216 13 742A   1775 G 20130830013241988 17 25 2139215-015207 37 S
    99216 13 742A   1775 G 20130830013247061 17 25 2140497-014113 37 S
    99216 13 742A   1775 G 20130830013250848 17 25 2141454-013274 37 S
    99216 13 742A   1775 G 20130830013352092 17 25 2155872+002897 37 S
    99216 13 742A   1775 G 20130830013357081 17 25 2156975+003808 37 S
    99216 13 742A   1775 G 20130830013402152 17 25 2158095+004707 37 S
    99216 13 742A   1775 G 20130830013417151 17 25 2201336+011320 37 S
    99216 13 742A   1775 G 20130830013422089 17 25 2202375+012170 37 S
    99216 13 742A   1775 G 20130830013427127 17 25 2203446+013019 37 S
    99216 13 742A   1775 G 20130830013432116 17 25 2204484+013850 37 S
    99216 13 742A   1775 G 20130830013437154 17 25 2205531+014655 37 S
    99216 13 742A   1775 G 20130830013452203 17 25 2208595+021062 37 S
    99216 13 742A   1775 G 20130830013457141 17 25 2209588+021821 37 S
    99216 13 742A   1775 G 20130830013502062 17 25 2210555+022584 37 S
    99216 13 742A   1775 G 20130830013507067 17 25 2211541+023318 37 S
    99216 13 742A   1775 G 20130830013512122 17 25 2212536+024066 37 S
    99216 13 742A   1775 G 20130830013517211 17 25 2213520+024827 37 S
    99216 13 742A   1775 G 20130830013521748 17 25 2214392+025499 37 S
    99216 13 742A   1775 G 20130830013602306 17 25 2221933+035036 37 S
    99216 13 742A   1775 G 20130830013607211 17 25 2222800+035677 37 S
    99216 13 742A   1775 G 20130830013622259 17 25 2225443+041534 37 S
    99216 13 742A   1775 G 20130830013626547 17 25 2226171+042083 37 S
    99216 13 742A   1775 G 20130830013632403 17 25 2227207+042789 37 S
    99216 13 742A   1775 G 20130830013647268 17 25 2229722+044533 37 S
    99216 13 742A   1775 G 20130830013652322 17 25 2230567+045120 37 S
    99216 13 742A   1775 G 20130830013657261 17 25 2231374+045677 37 S
    99216 13 742A   1775 G 20130830013702416 17 25 2232222+050255 37 S
    99216 13 742A   1775 G 20130830013707287 17 25 2233025+050768 37 S
    99216 13 742A   1775 G 20130830013712310 17 25 2233829+051316 37 S
    99216 13 742A   1775 G 20130830013717214 17 25 2234624+051845 37 S
    99216 13 742A   1775 G 20130830013722336 17 25 2235438+052390 37 S
    99216 13 742A   1775 G 20130830013727291 17 25 2236216+052915 37 S
    99216 13 742A   1775 G 20130830013742156 17 25 2238558+054430 37 S
    99216 13 742A   1775 G 20130830013747594 17 25 2239384+054983 37 S
    99216 13 742A   1775 G 20130830013752867 17 25 2240191+055467 37 S
    99216 13 742A   1775 G 20130830013802242 17 25 2241615+060373 37 S
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