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ASTROMETRIC UPDATE:
OCCULTATION BY (2307) GARUDA - 2013 Dec 12

[Detailed Finder Charts]


Updated:   2013 NOV 22, 15:33 UT

Event Rank : 36

(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.

Garuda Update Map


On 2013 Dec 12 UT, the 42 km diameter asteroid (2307) Garuda will occult a 9.7 mag star in the constellation Taurus for observers along a path across south-eastern Australia, from Ulladulla across south-eastern New South Wales just south of Canberra, and across north-eastern and south-west coastal Victoria, passing directly over Melbourne, to Port Campbell.

In the case of an occultation, the combined light of the asteroid and the star will drop by 5.9 mag to 15.6 mag (the magnitude of the asteroid) for at most 3.0 seconds.

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

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 :
                   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  '  "
                                                        Longitude  Longitude  Longitude  Longitude
    138 41 58   -41  0  0   13 18 51    27    10   -23  137 57 58  139 26 27  135 18 12  142 16 35
    140 34 36   -40  0  0   13 18 41    28     8   -25  139 50  0  141 19 45  137  8 18  144 12 48
    142 30 46   -39  0  0   13 18 29    29     6   -26  141 45 23  143 16 44  139  1 16  146 13 26
    144 31  1   -38  0  0   13 18 17    30     4   -28  143 44 41  145 18  1  140 57 31  148 19 13

                                                         Latitude   Latitude   Latitude   Latitude
    145  0  0   -37 45 52   13 18 14    31     4   -28  -37 23 13  -38  8 46  -36  0 58  -39 36 15
    146  0  0   -37 17  2   13 18  8    31     3   -29  -36 54 33  -37 39 46  -35 32 51  -39  6 34
    147  0  0   -36 48 46   13 18  1    32     2   -29  -36 26 26  -37 11 20  -35  5 17  -38 37 29
    148  0  0   -36 21  5   13 17 55    32     1   -30  -35 58 54  -36 43 29  -34 38 17  -38  9  0
    149  0  0   -35 53 59   13 17 48    33   360   -30  -35 31 57  -36 16 14  -34 11 51  -37 41  7

    150  0  0   -35 27 28   13 17 42    33   359   -31  -35  5 35  -35 49 34  -33 46  0  -37 13 52
    151  0  0   -35  1 34   13 17 35    33   358   -32  -34 39 49  -35 23 31  -33 20 43  -36 47 14
    152  0  0   -34 36 16   13 17 28    34   356   -32  -34 14 40  -34 58  5  -32 56  2  -36 21 14
    153  0  0   -34 11 35   13 17 22    34   355   -33  -33 50  7  -34 33 16  -32 31 57  -35 55 52
    154  0  0   -33 47 32   13 17 15    34   354   -33  -33 26 11  -34  9  5  -32  8 28  -35 31  9


Uncertainty in time = +/- 7 secs

Prediction of 2013 Nov 22.0

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