Re: 2015FEB8-9.OBS

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 9 Feb 2015 19:25:34 +0100
My obs of 23533 of the last few months:
23533 95 015A   4172 G 20141121163250647 17 25 1048841+641466 37 S |
-0.00437 deg   -0.749 sec   3.0 day, 1518.8 km
23533 95 015A   4172 G 20141121163300643 17 25 1045095+623360 37 S |
-0.00430 deg   -0.745 sec   3.0 day, 1577.6 km
23533 95 015A   4172 G 20141121163310645 17 25 1041928+605901 37 S |
-0.00747 deg   -0.814 sec   3.0 day, 1637.3 km

23533 95 015A   4172 G 20141129061809427 17 25 2228807+761650 37 S |
0.05078 deg    0.627 sec   5.5 day, 1257.9 km
23533 95 015A   4172 G 20141129061819424 17 25 2241468+785045 37 S |
0.05212 deg    0.576 sec   5.5 day, 1209.2 km
23533 95 015A   4172 G 20141207055826191 17 25 2012977+675101 37 S |
0.00994 deg    0.003 sec   0.0 day, 1333.6 km

23533 95 015A   4172 G 20141207055831209 17 25 2004720+684308 37 S |
0.01060 deg    0.055 sec   0.0 day, 1306.8 km
23533 95 015A   4172 G 20141207055841204 17 25 1945343+702538 37 S |
0.00451 deg    0.037 sec   0.0 day, 1254.5 km

23533 95 015A   4172 G 20141209052831829 17 25 1806966+532639 37 S |
0.00295 deg    0.250 sec   2.0 day, 1417.0 km
23533 95 015A   4172 G 20141209052841825 17 25 1750706+532524 37 S |
0.00656 deg    0.231 sec   2.0 day, 1371.3 km
23533 95 015A   4172 G 20141209052851833 17 25 1733398+531198 37 S |
0.01919 deg    0.302 sec   2.0 day, 1327.5 km

23533 95 015A   4172 G 20141226043509920 17 25 1719429+262196 37 S |
0.07599 deg    2.723 sec   8.9 day, 1875.7 km
23533 95 015A   4172 G 20141226043519926 17 25 1711076+251006 37 S |
0.07946 deg    2.747 sec   8.9 day, 1858.7 km
23533 95 015A   4172 G 20141226043529923 17 25 1702832+235455 37 S |
0.08245 deg    2.754 sec   8.9 day, 1844.0 km

23533 95 015A   4172 G 20141228054434527 17 25 2100648+593372 37 S |
0.03219 deg    3.018 sec  11.0 day, 1503.5 km
23533 95 015A   4172 G 20141228054444533 17 25 2046899+603617 37 S |
0.02594 deg    3.044 sec  11.0 day, 1448.2 km
23533 95 015A   4172 G 20141228054454529 17 25 2031292+613537 37 S |
0.02683 deg    3.019 sec  11.0 day, 1394.3 km

23533 95 015A   4172 G 20150116060055152 17 25 2332510+654094 37 S |
-0.02673 deg   -0.234 sec   2.0 day, 1424.5 km
23533 95 015A   4172 G 20150116060105151 17 25 2322371+672843 37 S |
-0.02375 deg   -0.204 sec   2.0 day, 1368.5 km

23533 95 015A   4172 G 20150123055639748 17 25 2300586+680828 37 S |
-0.00920 deg   -1.107 sec   4.0 day, 1292.2 km
23533 95 015A   4172 G 20150123055649754 17 25 2240628+694610 37 S |
-0.00867 deg   -1.120 sec   4.0 day, 1240.0 km
The residuals are wrt the classfd.tle file used.


The latest TLE in classfd.tle is:
DMSP B5D2-8
1 23533U 95015A   15024.21375644 0.00000250  00000-0  12751-3 0    09
2 23533  98.7536  28.2203 0007000 169.7000 190.2999 14.15741333    04

The residuals wrt the TLE of 2015 Jan 24
23533 95 015A   4172 G 20141121163250647 17 25 1048841+641466 37 S |
-0.00437  |  0.00048 deg   13.951 sec -63.5 day, 1432.5 km
23533 95 015A   4172 G 20141121163300643 17 25 1045095+623360 37 S |
-0.00430  |  0.00012 deg   13.982 sec -63.5 day, 1489.8 km
23533 95 015A   4172 G 20141121163310645 17 25 1041928+605901 37 S |
-0.00747  |  0.00391 deg   13.947 sec -63.5 day, 1548.2 km
23533 95 015A   4172 G 20141129061809427 17 25 2228807+761650 37 S |
0.05078  |  0.02765 deg    9.894 sec -56.0 day, 1303.3 km
23533 95 015A   4172 G 20141129061819424 17 25 2241468+785045 37 S |
0.05212  |  0.03018 deg    9.846 sec -56.0 day, 1252.8 km
23533 95 015A   4172 G 20141207055826191 17 25 2012977+675101 37 S |
0.00994  |  0.02438 deg    5.491 sec -48.0 day, 1364.3 km
23533 95 015A   4172 G 20141207055831209 17 25 2004720+684308 37 S |
0.01060  |  0.02560 deg    5.555 sec -48.0 day, 1337.1 km
23533 95 015A   4172 G 20141207055841204 17 25 1945343+702538 37 S |
0.00451  |  0.02070 deg    5.555 sec -48.0 day, 1284.0 km
23533 95 015A   4172 G 20141209052831829 17 25 1806966+532639 37 S |
0.00295  |  0.00020 deg    4.777 sec -46.0 day, 1438.8 km
23533 95 015A   4172 G 20141209052841825 17 25 1750706+532524 37 S |
0.00656  |  0.00453 deg    4.770 sec -46.0 day, 1392.1 km
23533 95 015A   4172 G 20141209052851833 17 25 1733398+531198 37 S |
0.01919  |  0.02050 deg    4.854 sec -46.0 day, 1347.4 km
23533 95 015A   4172 G 20141226043509920 17 25 1719429+262196 37 S |
0.07599  |  0.04416 deg    0.371 sec -29.0 day, 1871.4 km
23533 95 015A   4172 G 20141226043519926 17 25 1711076+251006 37 S |
0.07946  |  0.04723 deg    0.389 sec -29.0 day, 1855.0 km
23533 95 015A   4172 G 20141226043529923 17 25 1702832+235455 37 S |
0.08245  |  0.04988 deg    0.390 sec -29.0 day, 1840.9 km
23533 95 015A   4172 G 20141228054434527 17 25 2100648+593372 37 S |
0.03219  | -0.01589 deg   -0.022 sec -27.0 day, 1485.3 km
23533 95 015A   4172 G 20141228054444533 17 25 2046899+603617 37 S |
0.02594  | -0.00883 deg   -0.009 sec -27.0 day, 1430.5 km
23533 95 015A   4172 G 20141228054454529 17 25 2031292+613537 37 S |
0.02683  | -0.00889 deg   -0.045 sec -27.0 day, 1377.0 km
23533 95 015A   4172 G 20150116060055152 17 25 2332510+654094 37 S |
-0.02673  | -0.02749 deg   -0.261 sec  -8.0 day, 1424.1 km
23533 95 015A   4172 G 20150116060105151 17 25 2322371+672843 37 S |
-0.02375  | -0.02455 deg   -0.232 sec  -8.0 day, 1368.1 km
23533 95 015A   4172 G 20150123055639748 17 25 2300586+680828 37 S |
-0.00920  | -0.00916 deg   -0.293 sec  -1.0 day, 1296.5 km
23533 95 015A   4172 G 20150123055649754 17 25 2240628+694610 37 S |
-0.00867  | -0.00863 deg   -0.306 sec  -1.0 day, 1244.2 km


The time residuals slowly went from 14 sec early to just over a second late.
So the satellite was slowly getting in a higher orbit and therefor
later in time.

I haven`t observed it since Jan 23.

Regards
Leo


2015-02-09 17:18 GMT+01:00 Ted Molczan via Seesat-l <seesat-l_at_satobs.org>:
> If 95015A / 23533 underwent its change of orbit about half way between Jan 24 and Feb 9, then these would be its
> approximate elements:
>
> 1 70000U          15032.00000000  .00000250  00000-0  12751-3 0    07
> 2 70000  98.7536  35.8668 0007000 147.4730 274.2437 14.15680000    00
>
> It could be early or late relative the above by tens of seconds, depending on the actual date of the orbit change.
>
> Ted Molczan
>
>
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Received on Mon Feb 09 2015 - 12:26:16 UTC

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