STS 121: NASA estimated elements

From: Ted Molczan (seesat-list@rogers.com)
Date: Mon Jul 03 2006 - 22:37:10 EDT

  • Next message: Tony Beresford: "observations from 8597 jul 4 2006"

    Lift-off is scheduled for 2006 Jul 04 at 18:37:55 UTC. Spaceflight Now reports
    that the weather forecast is for a 60 percent probability of GO for launch:
    
    http://www.spaceflightnow.com/shuttle/sts121/status.html
    
    NASA's estimated elements are available at the following URL. They take into
    account all planned manoeuvres, and are revised  throughout the mission, as
    required.
    
    http://spaceflight1.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/orb
    it/SHUTTLE/SVPOST.html
    
    For quick reference, I have extracted the elsets from MECO through docking.
    
    1. Jul 04, 18:48:24 UTC (MECO) - Jul 04, 19:16:27 UTC
    
    1 99999U          06185.78361111  .01000000  00000-0  35709-6 0    07
    2 99999  51.6300  97.3705 0133087 347.3299  70.5036 16.49322810    09
    
    NOTE: NASA's MECO 2-line elset is erroneous; so I generated the above by
    converting NASA's True of Day Rotating (TDR) [aka Earth-Fixed Greenwich (EFG)]
    Cartesian state vector to SGP4, using Ken Ernandes' VEC2TLE program, and added
    realistic decay terms for the brief duration of existence of the orbit. Our web
    site has a link to Ken's program:
    
    http://www.satobs.org/orbsoft.html#Other
    
    
    2. Jul 04, 19:16:27 - Jul 05, 10:43:40 UTC
    
    1 99999U          06185.83481559  .00014500  00000-0  95600-4 0  9015
    2 99999  51.6298  97.0838 0054912 341.1886  18.7277 16.30517194    26
    
    
    3. Jul 05, 10:43:40 UTC - Jul 05, 10:48:10 UTC
    
    1 99999U          06186.44742686  .00014500  00000-0  95600-4 0  9025
    2 99999  51.6324  93.6688 0083791 348.1321  11.7892 16.23859786   124
    
    
    4. Jul 05, 10:48:10 UTC - Jul 05, 21:45:15 UTC
    
    1 99999U          06186.50896312  .00014500  00000-0  95600-4 0  9039
    2 99999  51.6294  93.3272 0083398 348.4142  11.5125 16.23975955   138
    
    
    5. Jul 05, 21:45:15 UTC - Jul 06, 10:33:44 UTC
    
    1 99999U          06186.94036227  .00014500  00000-0  95600-4 0  9049
    2 99999  51.6297  90.9461 0060319 152.5497 207.8884 15.91421179   207
    
    
    6. Jul 06, 10:33:44 UTC - Jul 06, 12:04:57 UTC
    
    1 99999U          06187.44268566  .00014500  00000-0  95600-4 0  9059
    2 99999  51.6293  88.3033 0010493  91.9022 268.3345 15.78341149   282
    
    
    7. Jul 06, 12:04:57 UTC - Jul 06, 13:23:03 UTC
    
    1 99999U          06187.50599876  .00014500  00000-0  95600-4 0  9068
    2 99999  51.6309  87.9761 0010612  53.1699 307.0437 15.76682306   291
    
    
    8. Jul 06, 13:23:03 UTC - Jul 06, 13:36:03 UTC
    
    1 99999U          06187.56937934  .00014500  00000-0  95600-4 0  9076
    2 99999  51.6312  87.6491 0009685  45.1071 315.0878 15.76324371   300
    
    
    9. Jul 06, 13:36:03 UTC (nearly docked to ISS)
    
    1 99999U          06187.56937915  .00014500  00000-0  95600-4 0  9086
    2 99999  51.6315  87.6491 0010677  43.3240 316.8761 15.76141339   305
    
    Ted Molczan
    
    
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