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ASTROMETRIC UPDATE:
OCCULTATION BY (694) EKARD - 2009 JUL 05

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2009 JUN 24, 17:21 UT

Event Rank : 85

(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.

Ekard Update Map


On 2009 Jul 05 UT, the 99 km diameter asteroid (694) Ekard will occult a 10.6 mag star in the constellation Delphinus for observers along a path across Western Australia.

In the case of an occultation, the combined light of the asteroid and the star will drop by 1.4 mag to 11.6 mag (the magnitude of the asteroid) for at most 13.6 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: .

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
    125 53 25   -37  0  0   16 10 35    41    20   -74  126 34 31  125 12  9  127 22 48  124 23 12
    125 33 12   -36  0  0   16 10 48    42    20   -75  126 13 52  124 52 22  127  1 39  124  3 57
    125 12 32   -35  0  0   16 11  0    43    21   -76  125 52 47  124 32  7  126 40  5  123 44 10
    124 51 24   -34  0  0   16 11 12    44    22   -77  125 31 16  124 11 22  126 18  6  123 23 53
    124 29 49   -33  0  0   16 11 25    45    22   -78  125  9 19  123 50  8  125 55 44  123  3  5

    124  7 46   -32  0  0   16 11 38    45    23   -79  124 46 56  123 28 26  125 32 56  122 41 47
    123 45 16   -31  0  0   16 11 51    46    24   -80  124 24  7  123  6 14  125  9 45  122 19 58
    123 22 18   -30  0  0   16 12  5    47    25   -81  124  0 51  122 43 34  124 46  8  121 57 38
    122 58 51   -29  0  0   16 12 19    48    26   -82  123 37  8  122 20 24  124 22  5  121 34 48
    122 34 57   -28  0  0   16 12 32    48    27   -83  123 12 58  121 56 45  123 57 38  121 11 27

    122 10 34   -27  0  0   16 12 46    49    28   -84  122 48 21  121 32 36  123 32 44  120 47 35
    121 45 43   -26  0  0   16 13  1    50    29   -85  122 23 17  121  7 58  123  7 24  120 23 11
    121 20 22   -25  0  0   16 13 15    51    30   -86  121 57 44  120 42 49  122 41 37  119 58 16
    120 54 31   -24  0  0   16 13 30    51    31   -86  121 31 43  120 17  9  122 15 23  119 32 49
    120 28 11   -23  0  0   16 13 44    52    32   -87  121  5 13  119 50 58  121 48 41  119  6 49

    120  1 20   -22  0  0   16 13 59    53    33   -87  120 38 13  119 24 15  121 21 31  118 40 16
    119 33 57   -21  0  0   16 14 14    53    35   -87  120 10 43  118 57  0  120 53 52  118 13 10
    119  6  3   -20  0  0   16 14 30    54    36   -86  119 42 42  118 29 13  120 25 44  117 45 30
    118 37 36   -19  0  0   16 14 45    54    37   -86  119 14 10  118  0 51  119 57  5  117 17 14
    118  8 36   -18  0  0   16 15  1    55    39   -85  118 45  5  117 31 55  119 27 54  116 48 23

Uncertainty in time = +/- 8 secs

Prediction of 2009 Jun 25.0

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