LB Obs 2017 Dec 28 am

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 28 Dec 2017 07:18:24 +0100
The sky cleared abit during the night, but still alot of thin and some
thicker
clouds.In the clearings several satellites were imaged, A nice pass of the
10 new Iridium satellites was clouded out.

Several satellites have higher residuals due to older TLE's; see below.

12553 81 059A   4172 G 20171228043127968 17 25 1657015+492380 37 S
12553 81 059A   4172 G 20171228043133945 17 25 1645892+484607 37 S
20691 90 050C   4172 G 20171228043321953 17 25 1705140+534025 37 S
20691 90 050C   4172 G 20171228043331959 17 25 1658992+505287 37 S
20691 90 050C   4172 G 20171228043340877 17 25 1654411+482808 37 S
20692 90 050D   4172 G 20171228043401959 17 25 1657760+515256 37 S
20692 90 050D   4172 G 20171228043411961 17 25 1652412+490976 37 S
28353 04 021B   4172 G 20171228043441961 17 25 1701113+535504 37 S
28353 04 021B   4172 G 20171228043451957 17 25 1649809+505545 37 S
41334 16 010A   4172 G 20171228050342950 17 25 1418561+100395 37 S
41334 16 010A   4172 G 20171228050351957 17 25 1409869+085987 37 F
41334 16 010A   4172 G 20171228050401954 17 25 1400270+074835 37 S
41334 16 010A   4172 G 20171228050408157 17 25 1354486+070210 37 S
23533 95 015A   4172 G 20171228052451979 17 25 1434154+210255 37 S
23533 95 015A   4172 G 20171228052501977 17 25 1424742+180053 37 S
23851 96 024A   4172 G 20171228052721980 17 25 1322324+230976 37 S
23851 96 024A   4172 G 20171228052730982 17 25 1315783+200775 37 S

Obs format: http://www.satobs.org/position/IODformat.html
Residuals wrt the latest classfd.tle file before the session start.
Norad Cospar         Cross-track     delta T      TLE age  range
20691 90 050C   |  0.03842 deg   28.508 sec  43.2 day, 1263.3 km
20692 90 050D   |  0.07974 deg    6.649 sec  19.0 day, 1302.9 km
41334 16 010A   | -0.01040 deg   -3.861 sec  11.0 day, 1611.1 km
23533 95 015A   |  0.07959 deg    2.054 sec  10.0 day, 1106.9 km
23851 96 024A   | -0.04348 deg   -1.673 sec  11.0 day, 1046.0 km

The residuals of the other classified satellites are low.
2017 total obs: 13187 + 17 = 13204
************************************************************
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Setup: WATEC 120N, 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
Best regards     Leo Barhorst
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Received on Thu Dec 28 2017 - 00:25:11 UTC

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