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ASTROMETRIC UPDATE:
OCCULTATION BY (57) MNEMOSYNE - 2005 NOV 21

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2005 NOV 15, 00:17 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.

Mnemosyne Update Map


On 2005 Nov 21 UT, the 112 km diameter asteroid (57) Mnemosyne will occult a 11.6 mag star in the constellation Cetus for observers along a path across south-central New South Wales and western Victoria passing directly over Newcastle, Blue Mountains, Echuca and just north of Sydney.

In the case of an occultation, the combined light of the asteroid and the star will drop by only 0.5 mag to 11.1 mag (the magnitude of the asteroid) for at most 10.5 seconds. This event might be difficult to detect visually.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, 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       Alt
  E. Longitude   Latitude      U.T.    Alt    Az   Alt    Limit 1    Limit 2    Limit 3    Limit 4   Crn
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "
                                                         Latitude   Latitude   Latitude   Latitude
    138  0  0   -38 16  7   10 11 15    27    59    -5  -37 42  7  -38 50 13  -37 22 26  -39 10  1   0.22
    139  0  0   -37 54 45   10 11 11    28    59    -6  -37 20 38  -38 28 57  -37  0 53  -38 48 50   0.22
    140  0  0   -37 32 53   10 11  7    29    58    -7  -36 58 39  -38  7 12  -36 38 51  -38 27  8   0.22
    141  0  0   -37 10 31   10 11  2    29    57    -8  -36 36 11  -37 44 56  -36 16 18  -38  4 57   0.22
    142  0  0   -36 47 38   10 10 58    30    57    -9  -36 13 11  -37 22 10  -35 53 15  -37 42 15   0.22

    143  0  0   -36 24 15   10 10 53    31    56   -10  -35 49 42  -36 58 54  -35 29 42  -37 19  2   0.22
    144  0  0   -36  0 22   10 10 48    32    55   -11  -35 25 42  -36 35  8  -35  5 38  -36 55 20   0.23
    145  0  0   -35 35 59   10 10 43    33    55   -11  -35  1 12  -36 10 51  -34 41  5  -36 31  7   0.23
    146  0  0   -35 11  6   10 10 38    34    54   -12  -34 36 12  -35 46  4  -34 16  1  -36  6 24   0.23
    147  0  0   -34 45 42   10 10 32    35    53   -13  -34 10 42  -35 20 47  -33 50 27  -35 41 11   0.23

    148  0  0   -34 19 49   10 10 26    36    53   -14  -33 44 42  -34 55  0  -33 24 23  -35 15 28   0.23
    149  0  0   -33 53 25   10 10 21    37    52   -15  -33 18 13  -34 28 43  -32 57 50  -34 49 14   0.23
    150  0  0   -33 26 32   10 10 15    37    51   -16  -32 51 13  -34  1 56  -32 30 47  -34 22 31   0.23
    151  0  0   -32 59  9   10 10  9    38    51   -17  -32 23 44  -33 34 40  -32  3 14  -33 55 19   0.23
    152  0  0   -32 31 17   10 10  2    39    50   -18  -31 55 46  -33  6 54  -31 35 12  -33 27 36   0.23

    153  0  0   -32  2 56   10  9 56    40    49   -19  -31 27 18  -32 38 39  -31  6 41  -32 59 25   0.23
    154  0  0   -31 34  6   10  9 49    41    49   -20  -30 58 22  -32  9 55  -30 37 42  -32 30 44   0.23
    155  0  0   -31  4 47   10  9 42    42    48   -21  -30 28 58  -31 40 42  -30  8 14  -32  1 35   0.23

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