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ASTROMETRIC UPDATE:
OCCULTATION BY (269) JUSTITIA - 2009 Jun 19

[Detailed Finder Charts]


Updated:   2009 JUN 11, 21:57 UT

Event Rank : 36

(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.

Justitia Update Map


On 2009 Jun 19 UT, the 54 km diameter asteroid (269) Justitia will occult a 13.1 mag star in the constellation Virgo for observers along a narrow path across the southwestern tip of the South Island of New Zealand.

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.7 mag to 13.0 mag (the magnitude of the asteroid) for at most 20.8 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
    168 16 18   -33 47 50    7  0 31    48    55   -15  168 37 47  -33 40 52  167 54 40  -33 54 48  169 55  9  -33 15 17  166 34  6  -34 20 15
    168 19  7   -34 56 51    7  1 19    47    54   -16  168 40 57  -34 49 47  167 57  8  -35  3 54  169 59 30  -34 23 54  166 35 14  -35 29 40
    168 21  2   -36  6 37    7  2  7    47    52   -16  168 43 14  -35 59 28  167 58 40  -36 13 46  170  3  6  -35 33 16  166 35 19  -36 39 51
    168 22  0   -37 17 12    7  2 55    46    51   -17  168 44 36  -37  9 58  167 59 13  -37 24 26  170  5 53  -36 43 24  166 34 17  -37 50 53
    168 21 58   -38 28 40    7  3 43    45    50   -17  168 45  0  -38 21 19  167 58 44  -38 36  0  170  7 50  -37 54 24  166 32  4  -39  2 49

    168 20 50   -39 41  4    7  4 31    45    49   -18  168 44 22  -39 33 37  167 57  7  -39 48 31  170  8 52  -39  6 18  166 28 33  -40 15 44
    168 18 32   -40 54 30    7  5 19    44    48   -18  168 42 35  -40 46 56  167 54 17  -41  2  4  170  8 56  -40 19 12  166 23 39  -41 29 42
    168 14 58   -42  9  1    7  6  7    43    47   -19  168 39 36  -42  1 20  167 50  6  -42 16 43  170  7 57  -41 33  9  166 17 11  -42 44 48
    168  9 58   -43 24 44    7  6 56    42    46   -19  168 35 15  -43 16 55  167 44 28  -43 32 33  170  5 49  -42 48 15  166  9  1  -44  1  8
    168  3 25   -44 41 44    7  7 44    42    45   -19  168 29 24  -44 33 46  167 37 12  -44 49 42  170  2 25  -44  4 36  165 58 57  -45 18 48

    167 55  7   -46  0  8    7  8 32    41    44   -20  168 21 53  -45 52  1  167 28  5  -46  8 15  169 57 36  -45 22 17  165 46 43  -46 37 54
    167 44 50   -47 20  3    7  9 20    40    43   -20  168 12 28  -47 11 46  167 16 54  -47 28 20  169 51 13  -46 41 26  165 32  3  -47 58 35
    167 32 17   -48 41 38    7 10  8    39    42   -20  168  0 54  -48 33 10  167  3 21  -48 50  5  169 43  1  -48  2 11  165 14 34  -49 21  0

Uncertainty in time = +/- 40 secs

Prediction of 2009 Jun 12.0

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