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ASTROMETRIC UPDATE:
OCCULTATION BY (96) AEGLE - 2010 OCT 04

[Detailed Finder Charts]


Updated:   2010 AUG 10, 00:54 UT

Event Rank : 99

(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.

Aegle Update Map


On 2010 Oct 04 UT, the 170 km diameter asteroid (96) Aegle will occult a 12.5 mag star in the constellation Perseus for observers along a path across south-eastern Australia, beginning low in the north-west over eastern Victoria and south-eastern New South Wales and running across central Australia.

In the case of an occultation, the combined light of the asteroid and the star will drop by 1.0 mag to 13.0 mag (the magnitude of the asteroid) for at most 18.9 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 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
    150 49  0   -40  0  0   18 47  4     3   331    -8  152  9 40  149 28  5  152 56 21  148 41  1
    150  2 19   -39  0  0   18 47  5     5   331    -9  151 22  0  148 42 22  152  8  6  147 55 51
    149 15 56   -38  0  0   18 47  6     6   332   -10  150 34 41  147 56 52  151 20 15  147 10 52
    148 29 46   -37  0  0   18 47  8     7   332   -11  149 47 41  147 11 34  150 32 44  146 26  2
    147 43 49   -36  0  0   18 47 10     8   333   -11  149  0 55  146 26 23  149 45 31  145 41 18

    146 58  0   -35  0  0   18 47 13     9   333   -12  148 14 22  145 41 17  148 58 31  144 56 37
    146 12 16   -34  0  0   18 47 16    10   334   -13  147 27 57  144 56 14  148 11 42  144 11 57
    145 26 36   -33  0  0   18 47 19    12   334   -14  146 41 39  144 11 11  147 25  1  143 27 15
    144 40 57   -32  0  0   18 47 22    13   335   -15  145 55 24  143 26  6  146 38 26  142 42 29
    143 55 15   -31  0  0   18 47 26    14   335   -16  145  9 11  142 40 56  145 51 53  141 57 37

    143  9 30   -30  0  0   18 47 30    15   335   -17  144 22 56  141 55 39  145  5 21  141 12 36
    142 23 38   -29  0  0   18 47 35    16   336   -18  143 36 37  141 10 12  144 18 46  140 27 24
    141 37 37   -28  0  0   18 47 39    17   336   -18  142 50 13  140 24 34  143 32  7  139 41 59
    140 51 25   -27  0  0   18 47 45    19   337   -19  142  3 39  139 38 43  142 45 21  138 56 19
    140  4 59   -26  0  0   18 47 50    20   337   -20  141 16 55  138 52 35  141 58 25  138 10 21

    139 18 18   -25  0  0   18 47 56    21   337   -21  140 29 58  138  6  9  141 11 18  137 24  3
    138 31 19   -24  0  0   18 48  2    22   338   -22  139 42 45  137 19 23  140 23 57  136 37 24
    137 44  0   -23  0  0   18 48  9    23   338   -23  138 55 14  136 32 13  139 36 20  135 50 20
    136 56 18   -22  0  0   18 48 16    25   339   -24  138  7 24  135 44 39  138 48 23  135  2 49
    136  8 11   -21  0  0   18 48 23    26   339   -25  137 19 11  134 56 37  138  0  6  134 14 50

    135 19 37   -20  0  0   18 48 31    27   340   -26  136 30 33  134  8  6  137 11 26  133 26 20
    134 30 34   -19  0  0   18 48 39    28   340   -27  135 41 28  133 19  2  136 22 20  132 37 15
    133 40 58   -18  0  0   18 48 47    29   340   -28  134 51 53  132 29 24  135 32 45  131 47 34
    132 50 47   -17  0  0   18 48 56    30   341   -29  134  1 47  131 39  8  134 42 40  130 57 14
    131 59 59   -16  0  0   18 49  5    32   341   -30  133 11  5  130 48 11  133 52  1  130  6 13

    131  8 30   -15  0  0   18 49 15    33   342   -31  132 19 46  129 56 32  133  0 47  129 14 26
    130 16 19   -14  0  0   18 49 25    34   342   -32  131 27 46  129  4  6  132  8 53  128 21 52
    129 23 21   -13  0  0   18 49 35    35   343   -33  130 35  3  128 10 52  131 16 18  127 28 27
    128 29 33   -12  0  0   18 49 46    36   344   -34  129 41 34  127 16 44  130 22 58  126 34  7
    127 34 53   -11  0  0   18 49 57    38   344   -35  128 47 14  126 21 41  129 28 50  125 38 49

    126 39 16   -10  0  0   18 50  9    39   345   -36  127 52  2  125 25 37  128 33 51  124 42 29
Uncertainty in time = +/- 6 secs

Prediction of 2010 Jul 12.0

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