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ASTROMETRIC UPDATE:
OCCULTATION BY (1660) WOOD - 2012 Feb 27

[Detailed Finder Charts]


Updated:   2012 JAN 14, 18:31 UT

Event Rank : 31

(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.

Wood Update Map


On 2012 Feb 27 UT, the 18 km diameter asteroid (1660) Wood will occult a 10.2 mag star in the constellation Puppis for observers along a path across Western Australia from Jurien Bay to near Port Hedland,

In the case of an occultation, the combined light of the asteroid and the star will drop by 3.8 mag to 14.0 mag (the magnitude of the asteroid) for at most 2.2 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
    121 40  3   -10  0  0   12 36 59    77   138   -35  121 45 12  121 34 55  122  7 35  121 12 29
    121 26  0   -11  0  0   12 36 45    78   134   -34  121 31 10  121 20 51  121 53 39  120 58 18
    121 11 37   -12  0  0   12 36 31    78   129   -34  121 16 48  121  6 25  121 39 24  120 43 47
    120 56 51   -13  0  0   12 36 18    78   125   -33  121  2  4  120 51 38  121 24 47  120 28 52
    120 41 43   -14  0  0   12 36  4    79   120   -32  120 46 58  120 36 28  121  9 48  120 13 35

    120 26 11   -15  0  0   12 35 50    79   114   -32  120 31 27  120 20 54  120 54 26  119 57 52
    120 10 13   -16  0  0   12 35 36    79   109   -31  120 15 32  120  4 55  120 38 39  119 41 44
    119 53 50   -17  0  0   12 35 22    79   104   -30  119 59 10  119 48 29  120 22 27  119 25  8
    119 36 58   -18  0  0   12 35  8    79    99   -30  119 42 21  119 31 35  120  5 47  119  8  4
    119 19 37   -19  0  0   12 34 54    79    94   -29  119 25  2  119 14 11  119 48 39  118 50 30

    119  1 45   -20  0  0   12 34 40    78    89   -28  119  7 13  118 56 17  119 31  1  118 32 24
    118 43 21   -21  0  0   12 34 26    78    84   -28  118 48 51  118 37 50  119 12 52  118 13 45
    118 24 22   -22  0  0   12 34 12    77    80   -27  118 29 56  118 18 48  118 54  9  117 54 30
    118  4 48   -23  0  0   12 33 58    77    76   -26  118 10 25  117 59 11  118 34 52  117 34 39
    117 44 36   -24  0  0   12 33 45    76    73   -26  117 50 16  117 38 55  118 14 57  117 14  9

    117 23 43   -25  0  0   12 33 31    76    70   -25  117 29 27  117 17 59  117 54 24  116 52 57
    117  2  9   -26  0  0   12 33 17    75    67   -24  117  7 57  116 56 21  117 33 10  116 31  3
    116 39 50   -27  0  0   12 33  3    74    64   -23  116 45 42  116 33 58  117 11 12  116  8 22
    116 16 44   -28  0  0   12 32 49    73    62   -23  116 22 40  116 10 48  116 48 28  115 44 54
    115 52 48   -29  0  0   12 32 35    72    60   -22  115 58 49  115 46 48  116 24 56  115 20 34

    115 28  0   -30  0  0   12 32 21    72    58   -21  115 34  5  115 21 55  116  0 33  114 55 20
    115  2 16   -31  0  0   12 32  7    71    57   -20  115  8 26  114 56  6  115 35 15  114 29  9
    114 35 32   -32  0  0   12 31 53    70    55   -20  114 41 47  114 29 17  115  9  0  114  1 57
    114  7 46   -33  0  0   12 31 39    69    54   -19  114 14  7  114  1 25  114 41 44  113 33 40
    113 38 52   -34  0  0   12 31 26    68    53   -18  113 45 19  113 32 25  114 13 22  113  4 14

    113  8 48   -35  0  0   12 31 12    67    52   -17  113 15 21  113  2 14  113 43 51  112 33 35
                                                         Latitude   Latitude   Latitude   Latitude
    112  0  0   -37  8 31   12 30 43    65    51   -15  -37 20 39  -36 56 22  -38 13 14  -36  3  0
    111  0  0   -38 51 38   12 30 19    63    50   -14  -39  3 15  -38 40  0  -39 53 37  -37 48 57
    110  0  0   -40 27 18   12 29 58    61    49   -12  -40 38 27  -40 16  8  -41 26 49  -39 27 10
    109  0  0   -41 56 16   12 29 38    60    49   -11  -42  6 59  -41 45 31  -42 53 32  -40 58 26

Uncertainty in time = +/- 5 secs

Prediction of 2012 Jan 15.0

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