Re: cosmos 2001 is relocated

From: Björn Gimle (b_gimle@algonet.se)
Date: Tue Apr 06 2004 - 04:25:47 EDT

  • Next message: Russell Eberst: "APR5.OBS"

    FWIW (SGP4 is not reliable on HEO/GEO orbits over long times
    and the SGP drag terms have opposite signs),
    AllCola gives the close approach on July 31.
    The shortest orbit separation on Aug.02
    
    Vec2TLE gives:
    COSMOS 2001
    1 19796U 89011A   03215.60000000 -.00001182  00000-0  10000-3 0  6004
    2 19796  66.6586  50.9920 6842320 219.7239 223.4505  2.00883623105980
    COSMOS 2001
    1 19796U 89011A    3215.60000000  .00000810  00000-0  10000-3 0  5997
    2 19796  66.8162  51.5184 6761910 218.1181 218.5987  2.00500830105979
    
    I don't see this as a relocation, possibly an adjustment of Mean Motion.
    
      Date     UTC Time   Norad         Name           Range/OrbSep  
     7/30/2003  4:53:21.73 19796 COSMOS 2001            431.2/ 218.7 
     7/30/2003  7:58:50.33 19796 COSMOS 2001            487.3/ 259.5 
     7/30/2003 17:47:50.68 19796 COSMOS 2001            266.8/ 127.3 
     7/30/2003 19:27:04.77 19796 COSMOS 2001            271.5/ 215.8 
     7/31/2003  6:22:56.27 19796 COSMOS 2001            162.3/ 101.1 
     7/31/2003 17:52:31.01 19796 COSMOS 2001            525.7/  94.5 
     8/ 1/2003  5:20:56.97 19796 COSMOS 2001            835.1/  80.2 
     8/ 1/2003 16:50:39.18 19796 COSMOS 2001           1097.8/  60.4 
     8/ 2/2003  4:22:01.74 19796 COSMOS 2001           1327.3/  36.6 
     8/ 2/2003 15:55:26.28 19796 COSMOS 2001           1532.9/  10.4 
    
    ----- Original Message ----- 
    
    > They recently have relocated cosmos 2001.
    > 
    
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