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ASTROMETRIC UPDATE:
OCCULTATION BY (0) 2005 GB187 - 2011 JUL 06

[Detailed Finder Charts]


Updated:   2011 May 13, 22:36 UT

Event Rank : 0

(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.

2005 GB187 Update Map


On 2011 Jul 06 UT, the 133 km diameter asteroid (0) 2005 GB187 will occult a 12.6 mag star in the constellation Libra for observers along a highly uncertain path across New Zealand and Australia.

In the case of an occultation, the combined light of the asteroid and the star will drop by 9.2 mag to 21.8 mag (the magnitude of the asteroid) for at most 14.4 seconds.

This update is based on 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 UCAC2 26900172 by 0 2005 GB187 on 2011 Jul  6 
                  Centre              Star  Star   Sun      Path Limits           Error Limits
  E. Longitude   Latitude      U.T.    Alt    Az   Alt    Limit 1    Limit 2    Limit 3    Limit 4
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "
                                                         Latitude   Latitude   Latitude   Latitude
    144  0  0   -32 17 46    7 54 41    52    70    -5  -31 31 27  -33  4 29   .. .. ..   .. .. ..
    145  0  0   -32 43 39    7 54 30    53    68    -6  -31 57 19  -33 30 23   .. .. ..   .. .. ..
    146  0  0   -33  9 25    7 54 20    53    67    -7  -32 23  4  -33 56  9   .. .. ..   .. .. ..
    147  0  0   -33 35  3    7 54 10    54    66    -8  -32 48 43  -34 21 48   .. .. ..   .. .. ..
    148  0  0   -34  0 34    7 54  0    54    64    -9  -33 14 13  -34 47 19   .. .. ..   .. .. ..

    149  0  0   -34 25 56    7 53 50    55    62   -10  -33 39 35  -35 12 41   .. .. ..   .. .. ..
    150  0  0   -34 51  8    7 53 39    55    61   -11  -34  4 48  -35 37 53   .. .. ..   .. .. ..
    151  0  0   -35 16 12    7 53 29    56    59   -11  -34 29 52  -36  2 56   .. .. ..   .. .. ..
    152  0  0   -35 41  5    7 53 19    56    57   -12  -34 54 46  -36 27 49   .. .. ..   .. .. ..
    153  0  0   -36  5 47    7 53  9    57    56   -13  -35 19 29  -36 52 30   .. .. ..   .. .. ..

    154  0  0   -36 30 19    7 52 59    57    54   -14  -35 44  1  -37 17  0   .. .. ..   .. .. ..
    155  0  0   -36 54 38    7 52 48    57    52   -15  -36  8 22  -37 41 19   .. .. ..   .. .. ..
    156  0  0   -37 18 46    7 52 38    58    50   -16  -36 32 31  -38  5 25   .. .. ..   .. .. ..
    157  0  0   -37 42 41    7 52 28    58    48   -17  -36 56 28  -38 29 19   .. .. ..   .. .. ..
    158  0  0   -38  6 24    7 52 18    58    47   -17  -37 20 12  -38 52 59   .. .. ..   .. .. ..

    159  0  0   -38 29 53    7 52  8    59    45   -18  -37 43 44  -39 16 27   .. .. ..   .. .. ..
    160  0  0   -38 53  8    7 51 58    59    43   -19  -38  7  1  -39 39 40   .. .. ..   .. .. ..
    161  0  0   -39 16 10    7 51 48    59    41   -20  -38 30  5  -40  2 39   .. .. ..   .. .. ..
    162  0  0   -39 38 56    7 51 38    59    39   -21  -38 52 54  -40 25 23   .. .. ..   .. .. ..
    163  0  0   -40  1 29    7 51 28    59    37   -21  -39 15 29  -40 47 53   .. .. ..   .. .. ..

    164  0  0   -40 23 46    7 51 18    60    35   -22  -39 37 49  -41 10  7   .. .. ..   .. .. ..
    165  0  0   -40 45 47    7 51  8    60    33   -23  -39 59 53  -41 32  5   .. .. ..   .. .. ..
    166  0  0   -41  7 33    7 50 58    60    31   -24  -40 21 42  -41 53 48   .. .. ..   .. .. ..
    167  0  0   -41 29  3    7 50 49    60    29   -25  -40 43 15  -42 15 15   .. .. ..   .. .. ..
    168  0  0   -41 50 17    7 50 39    60    27   -25  -41  4 33  -42 36 25   .. .. ..   .. .. ..

    169  0  0   -42 11 14    7 50 29    60    25   -26  -41 25 33  -42 57 18   .. .. ..   .. .. ..
    170  0  0   -42 31 54    7 50 20    60    23   -27  -41 46 17  -43 17 55   .. .. ..   .. .. ..
    171  0  0   -42 52 18    7 50 10    60    21   -28  -42  6 45  -43 38 15   .. .. ..   .. .. ..
    172  0  0   -43 12 24    7 50  1    60    19   -28  -42 26 55  -43 58 17   .. .. ..   .. .. ..
    173  0  0   -43 32 13    7 49 52    60    17   -29  -42 46 48  -44 18  2   .. .. ..   .. .. ..

    174  0  0   -43 51 45    7 49 42    59    15   -30  -43  6 24  -44 37 29   .. .. ..   .. .. ..
    175  0  0   -44 10 58    7 49 33    59    13   -30  -43 25 42  -44 56 38   .. .. ..   .. .. ..
    176  0  0   -44 29 54    7 49 24    59    11   -31  -43 44 42  -45 15 30   .. .. ..   .. .. ..
Uncertainty in time = +/- 9565 secs

Prediction of 2010 May 15.0


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