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ASTROMETRIC UPDATE:
OCCULTATION BY (940) KORDULA - 2008 Nov 30

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2008 NOV 13, 23:55 UT

Event Rank : 91

(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.

Kordula Update Map


On 2008 Nov 30 UT, the 97 km diameter asteroid (940) Kordula will occult a 11.5 mag star in the constellation Gemini for observers along a fairly broad path across Western Australia, from Eucla to Exmouth.

In the case of an occultation, the combined light of the asteroid and the star will drop by 3.6 mag to 15.1 mag (the magnitude of the asteroid) for at most 11.5 seconds.

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 :
                   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
    135 28  1   -38  0  0   18  9  5    26   356   -14  136 37 26  134 17 34  137 47 17  133  4 36
    134 21 56   -37  0  0   18  9 17    27   357   -15  135 31 25  133 11 25  136 41 17  131 58 18
    133 14 26   -36  0  0   18  9 30    28   358   -16  134 24  3  132  3 43  135 34  0  130 50 23
    132  5 22   -35  0  0   18  9 43    29   360   -18  133 15 13  130 54 23  134 25 21  129 40 42

    130 54 39   -34  0  0   18  9 57    30     1   -19  132  4 49  129 43 17  133 15 14  128 29  9
    129 42  8   -33  0  0   18 10 12    31     2   -20  130 52 44  128 30 16  132  3 32  127 15 33
    128 27 40   -32  0  0   18 10 27    32     3   -22  129 38 48  127 15 11  130 50  6  125 59 45
    127 11  5   -31  0  0   18 10 43    33     5   -23  128 22 54  125 57 51  129 34 48  124 41 34
    125 52 13   -30  0  0   18 10 59    34     6   -25  127  4 50  124 38  5  128 17 28  123 20 45

    124 30 50   -29  0  0   18 11 17    35     7   -26  125 44 25  123 15 38  126 57 56  121 57  5
    123  6 43   -28  0  0   18 11 35    36     9   -28  124 21 26  121 50 14  125 35 59  120 30 15
    121 39 33   -27  0  0   18 11 54    36    11   -29  122 55 37  120 21 35  124 11 23  118 59 54
    120  9  2   -26  0  0   18 12 14    37    12   -31  121 26 39  118 49 19  122 43 52  117 25 37
    118 34 45   -25  0  0   18 12 35    38    14   -33  119 54 13  117 12 58  121 13  6  115 46 54

    116 56 14   -24  0  0   18 12 57    38    16   -34  118 17 52  115 32  1  119 38 43  114  3  7
    115 12 54   -23  0  0   18 13 21    39    18   -36  116 37  6  113 45 46  118  0 17  112 13 28
    113 24  1   -22  0  0   18 13 45    39    20   -38  114 51 17  111 53 23  116 17 14  110 16 57
    111 28 40   -21  0  0   18 14 11    40    22   -39  112 59 39  109 53 45  114 28 54  108 12 12


Uncertainty in time = +/- 8 secs

[Prediction of 2008 Nov 13.0]

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