LB Obs 2017 Aug 16 pm

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 16 Aug 2017 23:37:47 +0200
It cleared in the evening, but at dusk a large field of clouds passed over.
There was a small clearings and 2 satellites were imaged.
But soon there after the sky got overcast.

32750 08 014A   4172 G 20170816202814540 17 25 1548295+361716 37 S
32750 08 014A   4172 G 20170816202820552 17 25 1532776+394016 37 S


The other was a UNID:
99999 17 728A   4172 G 20170816202838997 17 25 1535493+381424 37 S
99999 17 728A   4172 G 20170816202840350 17 25 1537609+373961 37 S
99999 17 728A   4172 G 20170816202842136 17 25 1540022+365505 37 S
Satfit gives:
25615   91.536  -20.354    0.036 17728A    0.977
25489  212.752    0.952    0.021 17728A  687.997
Another possibility is:
28385    0.558   16.261    0.692 17728A    0.977
Residuals:
25615 17 728A   | 141.91999 deg  995.046 sec   1.0 day, 9457.6 km
25489 17 728A   | -292.37817 deg -567.863 sec 688.0 day, 12935.9 km
28385 17 728A   | 15.45967 deg  354.671 sec   1.0 day, 4639.3 km
Most likely it is 28385 04 034B USA 179 r/b almost 6 min late

Residuals wrt the latest classfd.tle file before the session start.
Norad Cospar         Cross-track     delta T      TLE age  range

The residuals of the other classified satellites are low.
2017 total obs: 9675 + 2 = 9677
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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 Wed Aug 16 2017 - 16:38:30 UTC

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