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ASTROMETRIC UPDATE:
OCCULTATION BY (1036) GANYMED - 2011 OCT 08

[Detailed Finder Charts]


Updated:   2011 Sep 23, 21:51 UT

Event Rank : 98

(The event Rank is a measure of the likelihood of observing an event, and is equal to the probability of at least one successful observation by a team of two observers spaced 1/8 path width just inside opposite sides of the predicted path. An event rank of 100 indicates that the prediction is expected to be very accurate).


THE UPDATED PATH

Note: The duration given in the line below is the interval during which the occultation shadow sweeps across the Earth - please see the minute markers on the map to determine the approximate time for your location.

Ganymed Update Map


On 2011 Oct 08 UT, the 32 km diameter asteroid (1036) Ganymed will occult a 10.9 mag star in the constellation Andromeda for observers along a path across Northern Territory and south-western Queensland, passing over Birdsville.

In the case of an occultation, the combined light of the asteroid and the star will drop by merely 0.1 mag to 8.8 mag (the magnitude of the asteroid) for at most 2.3 seconds. This event will not be detectable visually.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill Owen, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC.

Additional details of this and other events are available at Steve Preston's website at http://www.asteroidoccultation.com/

EVENT DETAILS SUMMARY : Data for the target star : Data for the minor planet : The Occultation Path :
 Occultation of TYC 2820-02055-1 by 1036 Ganymed on 2011 Oct  8 
                   Centre              Star  Star   Sun     Path Limit1           Path Limit2           Error Limit1          Error Limit2
  E. Longitude    Latitude      U.T.    Alt   Az    Alt                                                                                       
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "
                                                         Longitude  Latitude   Longitude  Latitude   Longitude  Latitude   Longitude  Latitude
    133 46 27   -11 13 54   18 29 29    27   327   -33  133 58 36  -11 19  4  133 34 21  -11  8 49  134  7 38  -11 22 56  133 25 26  -11  5  5
    134 29  7   -13 37 37   18 29 39    24   327   -32  134 41 52  -13 43 25  134 16 27  -13 31 54  134 51 21  -13 47 47  134  7  7  -13 27 43
    135 21 55   -16 14 38   18 29 49    22   327   -30  135 35 30  -16 21 21  135  8 26  -16  8  2  135 45 38  -16 26 24  134 58 32  -16  3 13
    136 29 37   -19 10 40   18 29 59    19   327   -28  136 44 31  -19 18 47  136 14 53  -19  2 42  136 55 38  -19 24 54  136  4  5  -18 56 55
    138  2  9   -22 37 10   18 30  9    15   326   -26  138 19 24  -22 47 50  137 45 10  -22 26 48  138 32 22  -22 55 55  137 32 46  -22 19 19

    140 28 21   -27  6 30   18 30 19    10   325   -22  140 51 57  -27 23 54  140  5 38  -26 50  0  141 10  3  -27 37 27  139 49 18  -26 38 19
Uncertainty in time = +/- 1 secs

Prediction of 2011 Sep 24.0



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