Decay watch: 2000 Mar 12

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Sun Mar 12 2000 - 12:59:48 PST

  • Next message: Harro.Zimmer: "#23887 (AUX MOTOR) decayed!"

    I returned from my trip to find the Gorizont 32 aux motor decayed and
    two more decayers from today's Cosmos 2370 launch.
    
    
    #23887 = 96- 34 F = Gorizont 32 aux motor
    
    SpaceCom's final notice for this gives the decay at Mar 12 16:19 UTC
    +-1m at 24.2 N, 132.3 W. I get Mar 12 16:13 +-10m at 23.1 N, 133.7 W, in
    good agreement. The final elset...
    Gorizont 32 aux motor                            211 x 100 km
    1 23887U 96034F   00072.67905753  .84908156  12502-4  44392-3 0  3760
    2 23887  46.3029 256.2387 0084548  12.2999  40.0181 16.43879877 77747
    ...has it running only 45 seconds early against the SatEvo prediction I
    had made almost 3 days earlier. In the meantime the orbital period had
    fallen from 96.3 to 87.6 minutes. The epoch time of the above elset
    (16:18 UTC), suggests that SpaceCom may have secured a fix during the
    reentry.
    
    
    #26099 = 00- 13 B = Cosmos 2370 Proton rocket
    
    I predict this decay for Mar 13 22:19 +-6h near 15.7 S, 72.1 E while
    SpaceCom's latest notice, issued at 11:23 UTC today, predicts this for
    Mar 14 09:40 +-1d at 45.7 S, 146.1 E. This enters eclipse while
    southbound near 43 deg S at ~19:00 local time, with eclipse exit while
    northbound at 17 deg N and 05:00 local time. I show this decaying on the
    approach to a northbound equator crossing to the SE of India near the
    end of the final predicted orbit... 
    C 2370 Proton r                                  132 x 129 km
    1 26099U 00013B   00073.87284145  .37341676  96313+0  24936-3 0 90051
    2 26099  51.6284 231.8040 0001768 318.7350  41.2516 16.53343481   288
    Earlier that rev it crosses SE over the SW USA from N California at
    21:27 UTC to Phoenix, Arizona, at 21:30, then onwards over Mexico.
    
    
    #26100 = 00- 13 C = Cosmos 2370 Proton platform
    
    I show this decay at Mar 13 01:21 +-2h near 28.4 S, 109.6 W over the SE
    Pacific following a pass to the E of Hawaii at 01:05 UTC. SpaceCom's
    decay notice, posted at 12:47 UTC predicts the decay for Mar 12 23:39
    +-7h at 31.1 N. 135.9 W. My prediction for the final elset:
    C 2370 Proton platform                           142 x 139 km
    1 26100U 00013C   00073.01975127  .61620408  39653+1  77138-3 0 90065
    2 26100  51.6180 236.6455 0002491  66.2338 293.7923 16.49544580   143
    
    
    More details at http://www.wingar.demon.co.uk/satevo/dkwatch/
    
    
    Alan
    -- 
     Alan Pickup | COSPAR 2707:  55d53m48.7s N  3d11m51.2s W   156m asl
     Edinburgh   | Tel: +44 (0)131 477 9144     Fax: +44 (0)870 0520750
     Scotland    | SatEvo page:   http://www.wingar.demon.co.uk/satevo/
    
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    This archive was generated by hypermail 2b29 : Sun Mar 12 2000 - 13:01:20 PST