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ASTROMETRIC UPDATE:
OCCULTATION BY (738) ALAGASTA - 2008 Feb 08

[Detailed Finder Charts]


Updated:   2008 JAN 05, 20:46 UT

Event Rank : 72

(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.

Alagasta Update Map


On 2008 Feb 08 UT, the 63 km diameter asteroid (738) Alagasta will occult a 12.4 mag star in the constellation Taurus for observers along a south to north path beginning over Tasmania passing Hobart and Burnie. Then through central eastern Australia passing near Melbourne, Shepparton, Griffith and ending over central north-west Queensland.

In the case of an occultation, the combined light of the asteroid and the star will drop by 2.9 mag to 15.2 mag (the magnitude of the asteroid) for at most 34.7 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
    148  8 18   -48  0  0   10 53 11    21   351   -12  148 33 58  147 42 40  149 15 36  147  1 10
    147 54  3   -47  0  0   10 53 34    22   351   -12  148 19 13  147 28 53  149  0  4  146 48 10
    147 40  6   -46  0  0   10 53 58    23   351   -13  148  4 49  147 15 24  148 44 55  146 35 25
    147 26 26   -45  0  0   10 54 22    24   351   -13  147 50 43  147  2 10  148 30  6  146 22 54
    147 13  1   -44  0  0   10 54 48    25   351   -14  147 36 54  146 49 10  148 15 37  146 10 33

    146 59 50   -43  0  0   10 55 15    26   351   -15  147 23 19  146 36 22  148  1 24  145 58 23
    146 46 51   -42  0  0   10 55 43    27   351   -15  147  9 57  146 23 45  147 47 26  145 46 22
    146 34  2   -41  0  0   10 56 11    28   351   -16  146 56 48  146 11 17  147 33 42  145 34 28
    146 21 23   -40  0  0   10 56 41    29   351   -16  146 43 48  145 58 58  147 20 10  145 22 41
    146  8 52   -39  0  0   10 57 11    30   351   -17  146 30 59  145 46 46  147  6 49  145 11  0

    145 56 28   -38  0  0   10 57 43    31   351   -17  146 18 17  145 34 41  146 53 38  144 59 23
    145 44 12   -37  0  0   10 58 15    32   351   -18  146  5 43  145 22 41  146 40 37  144 47 51
    145 32  0   -36  0  0   10 58 49    33   351   -18  145 53 15  145 10 46  146 27 43  144 36 23
    145 19 54   -35  0  0   10 59 23    34   351   -19  145 40 54  144 58 55  146 14 56  144 24 57
    145  7 53   -34  0  0   10 59 58    35   351   -19  145 28 38  144 47  9  146  2 15  144 13 34

    144 55 55   -33  0  0   11  0 34    36   351   -20  145 16 26  144 35 25  145 49 41  144  2 13
    144 44  1   -32  0  0   11  1 11    37   351   -20  145  4 18  144 23 44  145 37 11  143 50 53
    144 32  9   -31  0  0   11  1 48    38   351   -21  144 52 14  144 12  5  145 24 47  143 39 35
    144 20 20   -30  0  0   11  2 27    39   351   -22  144 40 13  144  0 28  145 12 26  143 28 17
    144  8 33   -29  0  0   11  3  6    40   351   -22  144 28 14  143 48 52  145  0  9  143 17  0

    143 56 48   -28  0  0   11  3 46    41   351   -23  144 16 19  143 37 18  144 47 56  143  5 44
    143 45  5   -27  0  0   11  4 27    42   350   -23  144  4 25  143 25 45  144 35 45  142 54 27
    143 33 23   -26  0  0   11  5  9    43   350   -24  143 52 33  143 14 13  144 23 38  142 43 11
    143 21 42   -25  0  0   11  5 51    44   350   -24  143 40 43  143  2 42  144 11 33  142 31 55
    143 10  3   -24  0  0   11  6 34    45   350   -25  143 28 55  142 51 11  143 59 30  142 20 38

    142 58 24   -23  0  0   11  7 18    46   350   -25  143 17  8  142 39 40  143 47 30  142  9 21
    142 46 46   -22  0  0   11  8  3    47   350   -26  143  5 22  142 28 10  143 35 32  141 58  4
    142 35  9   -21  0  0   11  8 48    48   349   -26  142 53 38  142 16 41  143 23 35  141 46 46
    142 23 33   -20  0  0   11  9 35    49   349   -27  142 41 55  142  5 12  143 11 41  141 35 28
    142 11 58   -19  0  0   11 10 21    50   349   -27  142 30 13  141 53 43  142 59 48  141 24 10

    142  0 23   -18  0  0   11 11  9    51   349   -28  142 18 32  141 42 15  142 47 58  141 12 52
    141 48 50   -17  0  0   11 11 57    52   349   -28  142  6 53  141 30 47  142 36  9  141  1 33
    141 37 17   -16  0  0   11 12 46    53   348   -29  141 55 15  141 19 20  142 24 22  140 50 15
    141 25 46   -15  0  0   11 13 35    54   348   -29  141 43 39  141  7 53  142 12 38  140 38 56
    141 14 15   -14  0  0   11 14 25    55   348   -29  141 32  4  140 56 27  142  0 55  140 27 38

    141  2 46   -13  0  0   11 15 16    56   347   -30  141 20 30  140 45  3  141 49 15  140 16 20
    140 51 19   -12  0  0   11 16  7    57   347   -30  141  8 59  140 33 39  141 37 37  140  5  3
    140 39 53   -11  0  0   11 16 59    58   347   -31  140 57 30  140 22 17  141 26  2  139 53 47
    140 28 29   -10  0  0   11 17 52    59   346   -31  140 46  2  140 10 56  141 14 29  139 42 31
    140 17  7   - 9  0  0   11 18 45    60   346   -32  140 34 38  139 59 37  141  3  0  139 31 17

    140  5 48   - 8  0  0   11 19 38    61   345   -32  140 23 15  139 48 20  140 51 33  139 20  4
    139 54 31   - 7  0  0   11 20 32    61   345   -33  140 11 56  139 37  5  140 40 10  139  8 53
    139 43 16   - 6  0  0   11 21 26    62   344   -33  140  0 40  139 25 53  140 28 51  138 57 44
    139 32  5   - 5  0  0   11 22 21    63   343   -33  139 49 27  139 14 44  140 17 36  138 46 37
    139 20 58   - 4  0  0   11 23 17    64   343   -34  139 38 18  139  3 37  140  6 25  138 35 33

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