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ASTROMETRIC UPDATE:
OCCULTATION BY (3793) LEONTEUS - 2007 OCT 24

[Detailed Finder Charts]


Updated:   2007 OCT 10, 04:12 UT

Event Rank : 21

(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.

Leonteus Update Map


On 2007 Oct 24 UT, the 86 km diameter asteroid (3793) Leonteus will occult a 9.3 mag star in the constellation Pegasus for observers along a wide but very large uncertainty path over Western Australia, running into central Australia, quite low above the western horizon over the latter area.

In the case of an occultation, the combined light of the asteroid and the star will drop by 7.3 mag to 16.6 mag (the magnitude of the asteroid) for at most 8.3 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: 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 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
    112  6 28   -15 55 23   16 17 20    22   280   -62  113  2  9  -15 51 12  111 12 48  -15 59 41  120 18 45  -15 28 10  106  1 45  -16 29 38
    113 26 48   -16 56 13   16 17 30    21   280   -61  114 26  5  -16 52 11  112 29 58  -17  0 23  122 30 18  -16 31 25  107  4 46  -17 29 47
    114 56 43   -17 57 50   16 17 40    19   279   -60  116  0 41  -17 54  1  113 55 50  -18  1 49  125 20 38  -17 36 54  108 13 16  -18 30 32
    116 38 57   -19  0 25   16 17 51    17   279   -59  117 49 21  -18 56 54  115 32 39  -19  4  9  129 53  1  -18 47 47  109 28 13  -19 31 58
    118 37 54   -20  4 11   16 18  1    15   279   -57  119 57 48  -20  1  7  117 23 55  -20  7 34  ... .. ..   .. .. ..  110 50 52  -20 34  8

    121  1 33   -21  9 34   16 18 11    13   278   -56  122 37 27  -21  7 16  119 35 34  -21 12 23  ... .. ..   .. .. ..  112 22 58  -21 37 11
    124  8  4   -22 17 31   16 18 21    10   277   -54  126 19 40  -22 16 58  122 19 30  -22 19 13  ... .. ..   .. .. ..  114  7  2  -22 41 15
    129  9 24   -23 31 37   16 18 31     5   275   -51  ... .. ..   .. .. ..  126  8 43  -23 29 46  ... .. ..   .. .. ..  116  6 59  -23 46 34

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