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ASTROMETRIC UPDATE:
OCCULTATION BY (5851) 1991 DM1 - 2008 Mar 31

[Detailed Finder Charts]


Updated:   2008 FEB 15, 00:33 UT

Event Rank : 9

(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.

1991 DM1 Update Map


On 2008 Mar 31 UT, the 12 km diameter asteroid (5851) 1991 DM1 will occult a 9.9 mag star in the constellation Virgo for observers along a narrow path of significant uncertainty across New Zealand near Gisbourne.

In the case of an occultation, the combined light of the asteroid and the star will drop by 5.7 mag to 15.6 mag (the magnitude of the asteroid) for at most 1.1 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
    179  0 48   -41  0  0   11 10 33    36    50   -51  179  7 52  178 53 43 -179  8 59  177  7 46
    178 39 26   -40  0  0   11 10 43    36    50   -52  178 46 26  178 32 25 -179 31 28  176 47 33
    178 16 47   -39  0  0   11 10 53    37    51   -53  178 23 43  178  9 50 -179 55  9  176 25 56
    177 52 52   -38  0  0   11 11  3    37    52   -54  177 59 44  177 45 58  179 40  1  176  2 57

    177 27 41   -37  0  0   11 11 14    37    53   -54  177 34 31  177 20 51  179 14  1  175 38 37
    177  1 17   -36  0  0   11 11 25    38    54   -55  177  8  3  176 54 29  178 46 52  175 12 57
    176 33 38   -35  0  0   11 11 35    38    55   -56  176 40 22  176 26 53  178 18 34  174 45 57
    176  4 45   -34  0  0   11 11 46    38    56   -57  176 11 27  175 58  3  177 49  8  174 17 36
    175 34 38   -33  0  0   11 11 58    39    57   -57  175 41 19  175 27 57  177 18 33  173 47 56

    175  3 17   -32  0  0   11 12  9    39    58   -58  175  9 56  174 56 37  176 46 48  173 16 56

Use these links for further information:
[Planetary Occultations] [Using the Predictions]
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[Asteroid Occultation Results]


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