LB Obs 2019 Nov 07 pm

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 7 Nov 2019 21:33:40 +0100
Seven days  mostly clouded and a lot of rain.
The sky cleared late in the afternoon. A few scattered
thin clouds at the start, but then excellent conditions till
the last obs when thicker clouds came in ending the
session early.

Imaged the Yaogan 31 trio, 18 034 A, B, C; but only 2 sats
were visible in the image. A was in the lead, on a bit lower
track was the 2nd object, that normally should be C.
Reducing the image for C, 43277, gave no result, but 43276
for object B did. No 3rd object was reduced. I even tried it
with only A in the image, but no B showed up.
So what happened with the 3rd object? The TLEś from 2019 311
were almost identical for the 3 objects. Was B hiding behind C
as seen from my perspective? It should be on the same track as A.
Will try to observe them again.

28095 03 054A   4172 E 20191107174456030 S minimum inv
28095 03 054A   4172 E 20191107174506038 F
28095 03 054A   4172 E 20191107174516035 S bright
28538 05 004B   4172 E 20191107180546029 S minimum
28538 05 004B   4172 E 20191107180556032 F
28538 05 004B   4172 E 20191107180558970 F Flair

A few satellites have higher residuals, see below.

28095 03 054A   4172 E 20191107174447032 17 25 1303350+621155 37 S
28095 03 054A   4172 E 20191107174456030 17 25 1251164+635077 37 S
28095 03 054A   4172 E 20191107174506038 17 25 1235465+653675 37 F
28095 03 054A   4172 E 20191107174516035 17 25 1217730+671408 37 S
42065 17 011B   4172 E 20191107175010013 17 25 1633332+521015 37 S
42065 17 011B   4172 E 20191107175016028 17 25 1643316+521778 37 S
42065 17 011B   4172 E 20191107175026029 17 25 1700232+522288 37 S
42058 17 011A   4172 E 20191107175016028 17 25 1633312+522884 37 S
42058 17 011A   4172 E 20191107175026029 17 25 1649869+524112 37 S
42058 17 011A   4172 E 20191107175033039 17 25 1702222+524305 37 S
21263 91 032A   4172 E 20191107175116024 17 25 1653812+490592 37 I
21263 91 032A   4172 E 20191107175122035 17 25 1641681+501654 37 I
26906 01 040B   4172 E 20191107175546034 17 25 1426155+635320 37 S
26906 01 040B   4172 E 20191107175556026 17 25 1414703+660811 37 S
26906 01 040B   4172 E 20191107175606029 17 25 1400949+681845 37 S
03346 68 069B   4172 E 20191107175836026 17 25 1440891+671305 37 S
03346 68 069B   4172 E 20191107175846028 17 25 1424127+664266 37 S
03346 68 069B   4172 E 20191107175856032 17 25 1408758+660481 37 S
06324 72 104B   4172 E 20191107180100015 17 25 1413299+615838 37 S
06324 72 104B   4172 E 20191107180106026 17 25 1357979+630148 37 S
06324 72 104B   4172 E 20191107180116033 17 25 1330601+642960 37 S
13590 82 096B   4172 E 20191107180400014 17 25 1345661+630242 37 S
13590 82 096B   4172 E 20191107180406027 17 25 1353404+631306 37 S
13590 82 096B   4172 E 20191107180416023 17 25 1407166+632555 37 S
13590 82 096B   4172 E 20191107180426029 17 25 1421441+633304 37 S
28538 05 004B   4172 E 20191107180536028 17 25 1411372+620897 37 S
28538 05 004B   4172 E 20191107180546029 17 25 1357702+641541 37 S
28538 05 004B   4172 E 20191107180556032 17 25 1341407+661830 37 F
28538 05 004B   4172 E 20191107180558970 17 25 1336029+665148 37 F
19120 88 039B   4172 E 20191107180612048 17 25 1406285+604496 37 S
19120 88 039B   4172 E 20191107180616033 17 25 1358141+612839 37 S
21110 91 009L   4172 E 20191107180846033 17 25 1410213+662902 37 S
21110 91 009L   4172 E 20191107180856029 17 25 1353726+672976 37 S
03230 68 040B   4172 E 20191107181312050 17 25 1407309+673075 37 S
03230 68 040B   4172 E 20191107181315038 17 25 1354457+680284 37 S
07004 73 107B   4172 E 20191107181413037 17 25 1412119+670507 37 S
07004 73 107B   4172 E 20191107181416026 17 25 1355092+674755 37 S
15986 85 075A   4172 E 20191107182148020 17 25 1636803+480253 37 S
15986 85 075A   4172 E 20191107182156028 17 25 1648666+480533 37 S
15986 85 075A   4172 E 20191107182206026 17 25 1704173+480558 37 S
39475 13 072P   4172 E 20191107182303038 17 25 1703476+491915 37 S
39475 13 072P   4172 E 20191107182308017 17 25 1652698+483717 37 S
39475 13 072P   4172 E 20191107182314031 17 25 1641185+474379 37 S
43145 18 005A   4172 E 20191107182326030 17 25 1648890+502579 37 S
43145 18 005A   4172 E 20191107182336026 17 25 1656009+474269 37 S
43145 18 005A   4172 E 20191107182346023 17 25 1702098+450154 37 S
31702 07 027B   4172 E 20191107182600996 17 25 1721133+775360 37 S
31702 07 027B   4172 E 20191107182606024 17 25 1755004+783880 37 F
43275 18 034A   4172 E 20191107183256016 17 25 1851943+214815 37 S
43275 18 034A   4172 E 20191107183306015 17 25 1901912+202433 37 S
43275 18 034A   4172 E 20191107183316021 17 25 1911621+185868 37 S
43276 18 034B   4172 E 20191107183307011 17 25 1845246+223347 37 S
43277 18 034C   4172 E 20191107183316021 17 25 1854298+211978 37 S
43277 18 034C   4172 E 20191107183326018 17 25 1904060+195811 37 S
37162 10 046A   4172 E 20191107183338007 17 25 1916806+212848 37 S
37162 10 046A   4172 E 20191107183346022 17 25 1907316+221310 37 S
37162 10 046A   4172 E 20191107183356019 17 25 1855704+230596 37 S
20858 90 081W   4172 E 20191107184209005 17 25 1258436+694476 37 S
20858 90 081W   4172 E 20191107184216021 17 25 1248794+682008 37 S
20858 90 081W   4172 E 20191107184226019 17 25 1237752+662490 37 S
18665 87 101A   4172 E 20191107184458790 17 25 1202878+720546 37 S
02801 67 045A   4172 E 20191107184556012 17 25 1225145+665117 37 S
02801 67 045A   4172 E 20191107184606014 17 25 1225741+685925 37 S
02801 67 045A   4172 E 20191107184616010 17 25 1227067+711769 37 S
14547 83 120B   4172 E 20191107184728009 17 25 1228931+664473 37 S
14547 83 120B   4172 E 20191107184736013 17 25 1236557+675355 37 S
14547 83 120B   4172 E 20191107184746014 17 25 1248674+692070 37 S
18957 88 019A   4172 E 20191107185128993 17 25 1310147+674386 37 S
18957 88 019A   4172 E 20191107185136012 17 25 1305200+691091 37 S
17527 87 018A   4172 E 20191107185646009 17 25 1307981+700651 37 S
17527 87 018A   4172 E 20191107185656005 17 25 1257087+681435 37 S
17527 87 018A   4172 E 20191107185706001 17 25 1248381+662540 37 S
36598 10 028A   4172 E 20191107185857998 17 25 1240130+664487 37 S
36598 10 028A   4172 E 20191107185906010 17 25 1303090+671818 37 I
36598 10 028A   4172 E 20191107185909992 17 25 1314853+673042 37 I
28254 04 018A   4172 E 20191107190236002 17 25 1222050+711975 37 S
28254 04 018A   4172 E 20191107190245999 17 25 1217922+691852 37 S
28254 04 018A   4172 E 20191107190252020 17 25 1215363+680749 37 S
04070 69 070A   4172 E 20191107190446002 17 25 1236043+673893 37 S
04070 69 070A   4172 E 20191107190456003 17 25 1235951+700520 37 S
04070 69 070A   4172 E 20191107190503018 17 25 1235400+715538 37 S
20826 90 086A   4172 E 20191107190547100 17 25 1231866+714654 37 S
20826 90 086A   4172 E 20191107190556002 17 25 1213970+704917 37 S
40112 14 047D   4172 E 20191107190845999 17 25 1316083+673815 37 S
40112 14 047D   4172 E 20191107190856001 17 25 1250280+685273 37 S
40112 14 047D   4172 E 20191107190906000 17 25 1222020+694970 37 S
10820 78 042A   4172 E 20191107191615999 17 25 1222132+695359 37 S
10820 78 042A   4172 E 20191107191621026 17 25 1236110+702931 37 S
10820 78 042A   4172 E 20191107191627998 17 25 1258132+711409 37 S
11050 78 091H   4172 E 20191107191715998 17 25 1310978+673008 37 S
11050 78 091H   4172 E 20191107191726005 17 25 1311636+684908 37 S
11050 78 091H   4172 E 20191107191736002 17 25 1312827+700960 37 F
39411 13 065B   4172 E 20191107191923007 17 25 1319446+654856 37 S
39411 13 065B   4172 E 20191107191925996 17 25 1325198+655035 37 S
16452 86 002D   4172 E 20191107191935997 17 25 1250027+701804 37 F
16452 86 002D   4172 E 20191107191945999 17 25 1230351+700956 37 F
38758 12 048A   4172 E 20191107192439976 17 25 1330902+655231 37 S
38758 12 048A   4172 G 20191107192445991 17 25 1323158+664941 37 S
38758 12 048A   4172 G 20191107192455993 17 25 1307978+682217 37 S
38758 12 048A   4172 G 20191107192505991 17 25 1250084+695106 37 S
38758 12 048A   4172 G 20191107192513007 17 25 1235972+705013 37 S
38773 12 048P   4172 G 20191107192435991 17 25 1328706+661232 37 S
38773 12 048P   4172 G 20191107192445991 17 25 1314432+674758 37 S
38773 12 048P   4172 G 20191107192455993 17 25 1257690+691874 37 S
38773 12 048P   4172 G 20191107192505991 17 25 1238130+704364 37 S

Obs format: http://www.satobs.org/position/IODformat.html
Differences between observed track and predicted track
from the latest classfd.tle file before the session start.
Norad  Cospar        Cross-track      delta T     TLE age   range
43145 18 005A    | -0.00704 deg   -5.363 sec   8.0 day, 1456.6 km
31702 07 027B    | -0.00532 deg   -2.135 sec   8.1 day, 1019.9 km
The residuals of the other classified satellites are low.
2019 total obs:  29339 - 6 (double entries) + 105 = 29438
***************************************************************************************
Setup: WATEC 910HX/RC, 50 mm F1:1.8, NTP, Celestron Nexstar
Observations made and reduced with Sattools
Cospar 4172 ALMERE 52.3713 N 5.2580 E –3 ASL
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Received on Thu Nov 07 2019 - 14:34:49 UTC

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