1965-106A (#01843) Cosmos 100
SPACECOM'S FINAL REPORT - prepared Feb 15, 17:36 UTC - shows
the decay on
15 February, 17:09 UTC +/- 07 minutes (02.0°S, 125.0°E)
on a northbound pass over the Indonesian Islands.
This decay time was also for SPACECOM a surprise if you look on
their 06 and 02 HOURS BEFORE decay messages (17:47 UTC +/- 04 hours and
17:42 UTC +/- 03 hours).
The small FINAL REPORT decay window (+/- 07 minutes) has normally
no observational background. SPACECOM closed recently very often their
files with these window.
MPM + REENTRY delivers with the ELSETs 02046.473... - 0246.685...
(SFX 195, ap 004) the decay with the atmosphere model MISES-00:
15 February, 17:55 UTC +/- 11 minutes (08.58°N, 291.38°E)
on a descending pass over Venezuela.
Input SPACECOM'S atmosphere model Jacchia-70 shows:
15 February, 17:46 UTC +/- 11 minutes (40.24°N, 274.37°E)
on the same descending pass over Ohio.
My statement that SPACECOM'S final decay data were "unpredictable" from
the lasts ELSETs also with other sophisticated methods was confirmed by
the analysis from the AEROSPACE CORPORATION with their decay result
18:27 UTC +/- 30 minutes.
I suggest that SPACECOM'S final conclusion based on the fact
that Cosmos 100 would have passed on its final orbit the tracking
station Clear (Alaska) on 17:32 UTC with a maximum elevation of about
65°. The negative observation explained SPACECOM'S issued data on 17:36
UTC.
Harro
Harro.Zimmer@t-online.de
Berlin, Germany
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