R: MUOS 1: pre-launch estimated orbital elements

From: satrack@libero.it
Date: Fri Feb 17 2012 - 21:36:08 UTC

  • Next message: alberto rango: "4542 SATOBS 17 FEB 2012."

    I've just updated the TLEs on the tracking program. The link is:
    
    http://www.satflare.com/track.php?q=tempmuos
    
    I propose also a second link, where the program tries to switch over the 3
    TLEs automatically: (see the 3D graphics)
    
    http://www.satflare.com/track.php?q=tempmuosauto
    
    Best regards,
    Simone
    
    >----Messaggio originale----
    >Da: ssl3molcz@rogers.com
    >Data: 17-feb-2012 4.43
    >A: <seesat-l@satobs.org>
    >Ogg: MUOS 1: pre-launch estimated orbital elements
    >
    >The planned launch of MUOS 1 on 2012 Feb 16 UTC was scrubbed due to bad 
    weather. It has been re-scheduled for 2012 Feb
    >17; the launch window is from 22:42 to 23:26 UTC. Information on the launch 
    is available here:
    >
    >http://www.spaceflightnow.com/atlas/av030/status.html
    >
    >The following *rough* TLEs are based on launch at window-open.
    >
    >MECO 1                                                   167 X 624 km
    >1 79601U          12048.95440972  .00000000  00000-0  00000-0 0    01
    >2 79601  28.0000 308.7829 0337670 130.0000   3.3000 15.58830000    08
    >
    >MECO 2                                                 193 X 34447 km
    >1 79602U          12048.96446759  .00000000  00000-0  00000-0 0    02
    >2 79602  26.0000 311.1829 7227302 179.9293   1.5500  2.38040000    00
    >
    >MECO 3                                                3463 X 35786 km
    >1 79603U          12049.06926156  .00000000  00000-0  00000-0 0    09
    >2 79603  19.0000 326.6829 6215271 179.0000  74.6500  2.07084000    07
    >
    >Spacecraft separation is planned to occur at T+3:01:23. Soon afterward, the 
    Centaur will conduct a Collision and
    >Contamination Avoidance Maneuver (CCAM), followed by a blow-down of remaining 
    Centaur propellants. The typical Centaur
    >end of mission occurs 4400 s after spacecraft separation.
    >
    >I have not evaluated visibility windows, but based on a quick look, it 
    appears that the CCAM and blow-down will occur
    >within range of Western Australia, but well after sunrise. Prospective 
    observers should use the MECO 3 TLE to evaluate
    >visibility.
    >
    >Eventually, the payload will enter an inclined GEO orbit in one of the 
    existing UFO slots.
    >
    >Ted Molczan
    >
    >
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