RESURS DEB decayed

Harro.Zimmer (Harro.Zimmer@t-online.de)
Sun, 31 Oct 1999 16:17:44 +0100

Report time 14:30 UTC
1999-054E (#25953) RESURS DEBRIS

In its FINAL REPORT - prepared Oct 31, 05:25 UTC - SpaceCom shows the decay at
                      31 October, 05:06 UTC +/- 19 minutes (46.3S, 232.8E)
on a southbound track over the Pacific.

MPM delivers with the last ELSETs 99203.930 - 99204.172... a decay at
                      31 October, 05:07 UTC +/- 05 minutes (34.5S, 230.0E)
As I mentioned earlier these type of objects are ideal test cases for decay and
reentry models. They have a large mass to drag area ratio and are insensitive
against atmospheric regime changes with the decrease of the perigee. An analysis
with a special reentry program shows this time line for the last 30 minutes:

04:34:54 UTC : Alaska at the Harrison Bay (Entry)     Altitude: 125.5 km
04:37:21 UTC : Alaska at Cape Yakataga (Exit)         Altitude: 121.5 km
04:51:00 UTC : Altitude over the Pacific:    100.0 km
04:54:35 UTC :     "      "    "    "         90.0 km
05:59:29 UTC : Begin of the vertical descent  45.0 km
05:06:40 UTC   Altitude 0 km   (34.5S, 230.0E)

My solution is a little bit different compared with SpaceCom's trajectory that 
looks somewhat more depressed. 

Harro
Harro.Zimmer@t-online.de
Berlin, Germany


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