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ASTROMETRIC UPDATE:
OCCULTATION BY (663) GERLINDE - 2009 APR 14

[Detailed Finder Charts]


Updated:   2009 APR 02, 12:33 UT

Event Rank : 86

(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.

Gerlinde Update Map


On 2009 Apr 14 UT, the 101 km diameter asteroid (663) Gerlinde will occult a 13.1 mag star in the constellation Corvus for observers along a path across the south island of New Zealand.

In the case of an occultation, the combined light of the asteroid and the star will drop by a moderate 0.7 mag to 13.0 mag (the magnitude of the asteroid) for at most 8.8 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill Owen, 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 Limit1           Path Limit2           Error Limit1          Error Limit2
  E. Longitude    Latitude      U.T.    Alt   Az    Alt                                                                                       
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "
                                                         Longitude  Latitude   Longitude  Latitude   Longitude  Latitude   Longitude  Latitude
    169 32 33   -46 50 38    7 37 44    39    78   -16  168 29 41  -46 53 10  170 34 22  -46 47 41  167 15 23  -46 55 32  171 44 48  -46 43 45
    169 42 51   -45 51 45    7 37 53    39    78   -17  168 41 23  -45 54 21  170 43 18  -45 48 44  167 28 46  -45 56 50  171 52 11  -45 44 44
    169 50 58   -44 53  5    7 38  3    39    79   -17  168 50 48  -44 55 46  170 50  8  -44 50  1  167 39 44  -44 58 20  171 57 36  -44 45 59
    169 57  4   -43 54 39    7 38 12    40    80   -17  168 58  6  -43 57 22  170 55  3  -43 51 32  167 48 29  -44  0  1  172  1 12  -43 47 28
    170  1 16   -42 56 24    7 38 21    40    80   -17  169  3 26  -42 59 10  170 58 11  -42 53 16  167 55  9  -43  1 53  172  3  5  -42 49 11

    170  3 43   -41 58 21    7 38 30    40    81   -17  169  6 55  -42  1  9  170 59 36  -41 55 12  167 59 52  -42  3 54  172  3 22  -41 51  7
    170  4 30   -41  0 28    7 38 40    40    82   -17  169  8 40  -41  3 17  170 59 27  -40 57 19  168  2 46  -41  6  4  172  2  9  -40 53 13
Uncertainty in time = +/- 5 secs

Prediction of 2009 Apr  2.0

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