Re: CB Obs July 30, 2020: CMOS video observations: NROL-129 objects.

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 31 Jul 2020 02:11:32 +0200
The 5 bright objects were seen on the second pass between 23:38 and
23:46UTC. The faint object was not seen, though sky transparancy had
decreased.

These are circular orbits fitted to both passes. The orbits are likely
somewhat eccentric, but with only two passes the eccentricity and
argument of perigee are hard to constrain.

OBJECT A
1 99567U 20712A   20212.98508157  .00000000  00000-0  50000-4 0    00
2 99567  53.9686 218.6776 0001000   0.0000  87.7447 14.97655495    05
# 20200730.92-20200730.99, 16 measurements, 0.017 deg rms
OBJECT B
1 99568U 20712B   20212.98576946  .00000000  00000-0  50000-4 0    02
2 99568  53.9703 218.6801 0001000   0.0000  87.8925 14.97595134    00
# 20200730.92-20200730.99, 16 measurements, 0.017 deg rms
OBJECT C
1 99569U 20712C   20212.98697661  .00000000  00000-0  50000-4 0    01
2 99569  53.9688 218.6811 0001000   0.0000  88.1675 14.97474197    05
# 20200730.92-20200730.99, 16 measurements, 0.015 deg rms
OBJECT D
1 99570U 20712D   20212.99013656  .00000000  00000-0  50000-4 0    00
2 99570  53.9689 218.6883 0001000   0.0000  88.8257 14.97196045    03
# 20200730.92-20200730.99, 19 measurements, 0.020 deg rms
OBJECT E
1 99571U 20712E   20212.99066954  .00000000  00000-0  50000-4 0    00
2 99571  53.9682 218.6905 0001000   0.0000  88.9520 14.97148398    04
# 20200730.92-20200730.99, 17 measurements, 0.019 deg rms

All 5 objects were of similar brightness.

99567 20 712A   4171 G 20200730233822347 17 25 1623524+484120 37 S
99567 20 712A   4171 G 20200730233823552 17 25 1625572+490931 37 S
99567 20 712A   4171 G 20200730233825843 17 25 1629665+500345 37 S
99567 20 712A   4171 G 20200730233829463 17 25 1636630+513011 37 S
99567 20 712A   4171 G 20200730233830497 17 25 1638768+515537 37 S
99567 20 712A   4171 G 20200730233835595 17 25 1650082+535957 37 S
99567 20 712A   4171 G 20200730233838155 17 25 1656413+550272 37 S
99567 20 712A   4171 G 20200730233839748 17 25 1700623+554235 37 S
99568 20 712B   4171 G 20200730233921957 17 25 1624521+485143 37 S
99568 20 712B   4171 G 20200730233923356 17 25 1626920+492395 37 S
99568 20 712B   4171 G 20200730233926295 17 25 1632294+503355 37 S
99568 20 712B   4171 G 20200730233929857 17 25 1639352+515877 37 S
99568 20 712B   4171 G 20200730233932756 17 25 1645604+530920 37 S
99568 20 712B   4171 G 20200730233935449 17 25 1651903+541524 37 S
99568 20 712B   4171 G 20200730233937505 17 25 1657037+550577 37 S
99568 20 712B   4171 G 20200730233939005 17 25 1701011+554292 37 S
99569 20 712C   4171 G 20200730234106553 17 25 1626866+491175 37 S
99569 20 712C   4171 G 20200730234109515 17 25 1632183+502092 37 S
99569 20 712C   4171 G 20200730234112614 17 25 1638207+513453 37 S
99569 20 712C   4171 G 20200730234115709 17 25 1644752+524912 37 S
99569 20 712C   4171 G 20200730234118615 17 25 1651407+535970 37 S
99569 20 712C   4171 G 20200730234121155 17 25 1657702+550187 37 S
99569 20 712C   4171 G 20200730234123005 17 25 1702581+554724 37 S
99570 20 712D   4171 G 20200730234539362 17 25 1629742+491783 37 S
99570 20 712D   4171 G 20200730234541462 17 25 1633508+500603 37 S
99570 20 712D   4171 G 20200730234543425 17 25 1637203+505147 37 S
99570 20 712D   4171 G 20200730234545778 17 25 1641906+514674 37 S
99570 20 712D   4171 G 20200730234548687 17 25 1648119+525539 37 S
99570 20 712D   4171 G 20200730234551232 17 25 1653992+535625 37 S
99570 20 712D   4171 G 20200730234553237 17 25 1658910+544433 37 S
99570 20 712D   4171 G 20200730234554984 17 25 1703461+552653 37 S
99570 20 712D   4171 G 20200730234556236 17 25 1706833+555658 37 S
99571 20 712E   4171 G 20200730234625528 17 25 1631037+492773 37 S
99571 20 712E   4171 G 20200730234628233 17 25 1635974+502978 37 S
99571 20 712E   4171 G 20200730234630990 17 25 1641369+513380 37 S
99571 20 712E   4171 G 20200730234633234 17 25 1646067+522660 37 S
99571 20 712E   4171 G 20200730234635668 17 25 1651511+532456 37 S
99571 20 712E   4171 G 20200730234638372 17 25 1657986+542917 37 S
99571 20 712E   4171 G 20200730234640673 17 25 1703879+552408 37 S
99571 20 712E   4171 G 20200730234642168 17 25 1707958+560013 37 S

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Setup: ASI1600MM Pro CMOS, 85mm F/1.4, NexStar mount, NTP timing
IOD format: http://www.satobs.org/position/IODformat.html
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Regards,
   Cees
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Received on Thu Jul 30 2020 - 19:12:43 UTC

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