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ASTROMETRIC UPDATE:
OCCULTATION BY (469) ARGENTINA - 2009 Feb 25

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2009 FEB 18, 14:42 UT

Event Rank : 96

(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.

Argentina Update Map


On 2009 Feb 25 UT, the 126 km diameter asteroid (469) Argentina will occult a 11.5 mag star in the constellation Scorpius for observers along a broad path across the South Island of New Zealand, from Dunedin to Haast, and including all of the southern half of the South Island in the one sigma limit..

In the case of an occultation, the combined light of the asteroid and the star will drop by 2.8 mag to 14.2 mag (the magnitude of the asteroid) for at most 5.1 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 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
    165 55 31   -41 20 46   13 47 16    21   118   -39  167 32 25  -41 34 37  164 14 23  -41  3 31  168 50 55  -41 43 57  162 45 38  -40 45 57
    167 20 22   -42 46 54   13 47 21    23   116   -37  168 55  5  -42 57 51  165 41 59  -42 33  1  170 12  5  -43  5  3  164 16  9  -42 18 46
    168 40  0   -44  8 43   13 47 25    24   115   -36  170 13 14  -44 17 16  167  3 30  -43 57 34  171 29 13  -44 22 39  165 39 39  -43 45 57
    169 55 29   -45 27  0   13 47 30    26   114   -34  171 27 45  -45 33 31  168 20 14  -45 18  9  172 43  5  -45 37 20  166 57 42  -45  8 42

    171  7 37   -46 42 22   13 47 34    27   113   -33  172 39 18  -46 47  5  169 33  7  -46 35 29  173 54 18  -46 49 32  168 11 26  -46 27 52
    172 17  0   -47 55 14   13 47 39    28   111   -32  173 48 27  -47 58 23  170 42 53  -47 50  5  175  3 19  -47 59 35  169 21 39  -47 44  3
    173 24  7   -49  5 57   13 47 43    29   110   -30  174 55 36  -49  7 41  171 50  4  -49  2 20  176 10 33  -49  7 47  170 28 59  -48 57 43
    174 29 22   -50 14 49   13 47 48    30   109   -29  176  1  7  -50 15 15  172 55  7  -50 12 36  177 16 20  -50 14 19  171 33 56  -50  9 13

Uncertainty in time = +/- 3 secs

[Prediction of 2009 Feb 18.0]

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