CB Obs March 29, 2018; Fixed video

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 30 Mar 2018 11:42:31 +0200
Both cameras operated all night, but the sky clouded over around
22:00UT. Two unknowns were seen whose orbits match those of the Elisa
quartet Elisa quartet (objects 38007-38010 from the 2011-076
launch). Both objects exited the shadow and hence had favorable phase
angles. The RAAN of a circular orbit fit is closest to the Eastern
orbital plane from the last known elements, but I refrain from
assigning identifications to these unknowns, as objects 38007 and
38009 have not been observed for 613 days, and objects 38008 and 38010
even longer, 930 days. More observations would be required to be
certain.

These circular orbits may aid in planning a search. The other orbital
plane used to be 2.56 degrees offset, so search either East or West of
that plane.

1 99492U 18588A   18088.84206282  .00000000  00000-0  50000-4 0    02
2 99492  98.0125 156.8579 0001000   0.0000  52.1326 14.66049028    01
# 20180329.84-20180329.84, 9 measurements, 0.011 deg rms
1 99493U 18588B   18088.84219336  .00000000  00000-0  50000-4 0    07
2 99493  98.0070 156.8849 0001000   0.0000  52.0244 14.65110109    07
# 20180329.84-20180329.84, 8 measurements, 0.003 deg rms

23862 96 029D   4171 G 20180329192258223 17 25 1657367+565530 37 S
23936 96 029E   4171 G 20180329194710165 17 25 1711058+582951 37 S
23936 96 029E   4171 G 20180329194720165 17 25 1700920+565195 37 S
23936 96 029E   4171 G 20180329194730164 17 25 1651991+551409 37 S
23936 96 029E   4171 G 20180329194738132 17 25 1645700+535608 37 S
28096 03 054B   4171 G 20180329195250669 17 25 1701218+602483 37 S
28096 03 054B   4171 G 20180329195300160 17 25 1656831+585707 37 S
28096 03 054B   4171 G 20180329195310521 17 25 1652616+572282 37 S
28096 03 054B   4171 G 20180329195320161 17 25 1649187+555662 37 S
28096 03 054B   4171 G 20180329195328261 17 25 1646665+544556 37 S
42073 17 015B   4171 G 20180329195611376 17 25 1648771+571040 37 S
42073 17 015B   4171 G 20180329195620157 17 25 1715996+575169 37 S
21799 91 076C   4171 G 20180329200353632 17 25 1726298+601444 37 S
21799 91 076C   4171 G 20180329200400152 17 25 1724517+584178 37 S
21799 91 076C   4171 G 20180329200410132 17 25 1722150+562768 37 S
21799 91 076C   4171 G 20180329200415432 17 25 1721266+552009 37 S
31701 07 027A   4171 G 20180329202130510 17 25 1744651+592049 37 S
31708 07 027C   4171 G 20180329202133370 17 25 1745526+595566 37 S
31701 07 027A   4171 G 20180329202140150 17 25 1740843+573930 37 S
31708 07 027C   4171 G 20180329202140150 17 25 1742800+584339 37 S
31701 07 027A   4171 G 20180329202150049 17 25 1737497+555897 37 S
31708 07 027C   4171 G 20180329202150149 17 25 1739149+565970 37 S
31708 07 027C   4171 G 20180329202158990 17 25 1736409+553112 37 S
37386 11 014A   4171 G 20180329201649607 17 25 1259768+263637 37 S
37391 11 014B   4171 G 20180329201647067 17 25 1258791+254956 37 S
37386 11 014A   4171 G 20180329201656847 17 25 1300810+251064 37 S
37391 11 014B   4171 G 20180329201656847 17 25 1300093+235569 37 S
37386 11 014A   4171 G 20180329201706847 17 25 1302082+231623 37 S
37391 11 014B   4171 G 20180329201706847 17 25 1301364+220410 37 S
37386 11 014A   4171 G 20180329201716607 17 25 1303280+212927 37 S
37391 11 014B   4171 G 20180329201714067 17 25 1302339+204640 37 S
99492 18 588A   4171 G 20180329201232798 17 25 1258165+255466 37 S
99492 18 588A   4171 G 20180329201234777 17 25 1259677+263825 37 S
99492 18 588A   4171 G 20180329201235857 17 25 1300512+270209 37 S
99492 18 588A   4171 G 20180329201237557 17 25 1301859+273984 37 S
99492 18 588A   4171 G 20180329201239037 17 25 1303056+281293 37 S
99492 18 588A   4171 G 20180329201240317 17 25 1304113+284173 37 S
99492 18 588A   4171 G 20180329201228139 17 25 1254679+241153 37 S
99492 18 588A   4171 G 20180329201229897 17 25 1256017+245152 37 S
99492 18 588A   4171 G 20180329201231337 17 25 1257072+252271 37 S
99493 18 588B   4171 G 20180329201238717 17 25 1252615+232694 37 S
99493 18 588B   4171 G 20180329201240417 17 25 1253803+240397 37 S
99493 18 588B   4171 G 20180329201241457 17 25 1254547+242614 37 S
99493 18 588B   4171 G 20180329201243478 17 25 1256007+250993 37 S
99493 18 588B   4171 G 20180329201246277 17 25 1258085+261105 37 S
99493 18 588B   4171 G 20180329201248617 17 25 1259880+270289 37 S
99493 18 588B   4171 G 20180329201250837 17 25 1301643+275247 37 S
99493 18 588B   4171 G 20180329201252296 17 25 1302823+282525 37 S

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Setup: Watec 902H2 video, 50mm F/1.8, NexStar mount, NTP timing
IOD format: http://www.satobs.org/position/IODformat.html
COSPAR 4171: 52.8344N, 6.3785E, 10m (WGS84)
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Regards,
   Cees
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Received on Fri Mar 30 2018 - 04:43:18 UTC

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