USA 161

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 3 Jun 2014 17:08:47 +0200
>>Bjorn wrote:
With this elset
USA 161
1 26934U 01044A   14153.01326571 0.00010000  00000-0  13358-3 0    09
2 26934  96.9230 285.1815 0005000 346.8150  13.1848 15.58047705    04
the match is perfect (except for crosstrack shift)
The residuals you show (not 140s),  appear to me to suggest your
predictions for your three obs
011022796 -11.17253 deg  -89.649 sec  would be 01:08:53.1
011030087 -12.38589 deg  -98.941 sec       01:08:51.1 !
011039945 -14.00304 deg -113.415 sec       01:08:46.5 !
>>>
Using TLE 14153 from Bjorn's mail I get:
26934 01 044A   4172 G 20140603011022796 17 25 1958248-160876 37 S |
0.32282 deg    0.776 sec   1.0 day, 1048.6 km
26934 01 044A   4172 G 20140603011030087 17 25 1958911-143814 37 S |
0.33626 deg    0.732 sec   1.0 day, 999.1 km
26934 01 044A   4172 G 20140603011039945 17 25 1959909-122572 37 S |
0.35557 deg    0.468 sec   1.0 day, 933.0 km
I used Teds 14154 TLE and got these resiuals on my obs from this morning:
26934 01 044A   4172 G 20140603011022796 17 25 1958248-160876 37 S |
0.00276 deg    0.048 sec   0.0 day, 1054.1 km
26934 01 044A   4172 G 20140603011030087 17 25 1958911-143814 37 S |
0.00391 deg    0.082 sec   0.0 day, 1004.5 km
26934 01 044A   4172 G 20140603011039945 17 25 1959909-122572 37 S |
-0.01333 deg   -0.076 sec   0.0 day, 938.5 km

The TLE used in my original message was 17 days old.
I shouldhave used newer TLE's.

Regards
Leo
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Received on Tue Jun 03 2014 - 10:09:43 UTC

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