Re: Envisat & Mystery Satellite

From: Kevin Fetter (kevin_fetter@hotmail.com)
Date: Tue Apr 16 2002 - 01:39:11 EDT

  • Next message: Jean-Paul Cornec: "Re: Envisat & Mystery Satellite"

    Tom Wagner Wrote
    
    
    At 21:53:11 I watched Envisat emerge from the earth's shadow. It came into
    view in Bootes. According to Heavens-Above it was a mag 3.7. Much to my
    delight, about 4 seconds after Envisat faded into view, another 
    satellite,maybe two magnitudes fainter, faded into view, also in Bootes but 
    a couple degrees higher (as I recall) than Envisat. The second satellite was 
    traveling on a parallel course with Envisat but was moving more slowly.
    
    Can anybody determine what that second satellite might have been?
    
    
    Well I get the following in the area and moving at parallel tracks.
    
    OSCAR 19 (LUSAT)
    1 20442U 90005G   02105.13337598  .00000610  00000-0  24516-3 0  7382
    2 20442  98.3822 172.7211 0013027  45.9032 314.3214 14.31500835638367
    CZ-4 DEB
    1 26441U 99057KN  02105.13892161  .00010372  00000-0  31141-2 0  3995
    2 26441  98.4212 172.6177 0103414 153.6946 207.1815 14.39803406103290
    
    Here is some data from the oig
    
    IntID/Name   CatNo Source period   Incl Apogee Perigee      RCS
    ------------ ----- ------ ------ ------ ------ ------- --------
    
    1990-005G    20442 ARGN    100.6   98.4    796     777   0.2579
    OSCAR 19 (LUSAT)          Launched (1990/01/22)
    
    1999-057KN   26441 PRC     100.0   98.4    825     695   0.6601
    CZ-4 DEB                  Launched (1999/10/14)
    
    Lusat or Oscar 19 is a amateur radio satellite.
    
    CZ-4 deb was part of the CZ-4 rocket used to lauch the CBERS 1 and SACI 1 
    satellites. When the rocket came apart in orbit, it put different parts in 
    different orbits.
    
    Both objects were predicted to be slightly ahead of envisat at the time of 
    his observation.  CZ-4 deb was 4 seconds ahead or early compared to envisat 
    using the above elements. Lusat was around 1 seconds early based on the 
    elements above.
    
    
    Kevin
    
    
    
    
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