Re: Phobos-Grunt - serious problem reported

From: Carlos Bella (
Date: Wed Nov 09 2011 - 13:41:01 UTC

  • Next message: Carlos Bella: "Re: Phobos-Grunt - serious problem reported"

    Here in Brazil some observers reported that they observed the probe in the
    "illuminated phase" of the expected path.
    But one of my colleagues (called Heverton) that lives in the city of
    Umuarama of state of Paraná (south of Brazil -
    **), makes a report at 23:00 (UT)that saw
    two objects in the orbit, in the own words:
    "I saw, but I found odd. First I saw a point a little slow, but I think it was
    the ISS. Then I saw Phobos and right behind it a point with a light a little
    weaker. I think it was the remains of the rocket??
    If my eyes not deceived me, I saw the light getting a little stronger
    at the estimated
    time of ignition. Too bad I can do any record"*
    I asked more accurate details about the observation and today he wrote:
    "Accurately I can not say anything, but I saw it from about 20:55:30 and
    20:57:00 (22:55:30 and 22:57:00 UT) . The brightness of the probe was greater
    than the ISS shines normally, but much less bright than it was Jupiter. The
    position, the best I can remember I tried to sketch with the help of
    Carlos Bella
    2011/11/8 Ted Molczan <>
    > I have just received word from the project that there seems to be a
    > serious problem.
    > After the planned first burn of the engine, the spacecraft was not found
    > in the predicted orbit. Alternative radar
    > observations preliminarily show that there are two objects in the orbit
    > with parameters the same as before the planned
    > engine burn. Observers are requested to attempt to discover the spacecraft
    > in the initial LEO parking orbit.
    > This is the official pre-launch estimated TLE of the LEO parking orbit:
    > 1 55500U 11000A   11312.95486111 -.00010748  00000-0 -11606-4 0    14
    > 2 55500  51.4279   0.6058 0106375  25.7555 298.8256 15.98414689    33
    > I imagine that one of the two objects seen on the radar could be the final
    > stage of the booster. Accurate descriptions
    > and counts of the number of objects seen, as well as position and time
    > would be useful.
    > Ted Molczan
    > _______________________________________________
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