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ASTROMETRIC UPDATE:
OCCULTATION BY (516) AMHERSTIA - 2016 Jun 29

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2016 MAY 05, 01:14 UT

Event Rank : 67

(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.

Amherstia Update Map


On 2016 Jun 29 UT, the 66 km diameter asteroid (516) Amherstia will occult a 12.4 mag star in the constellation Norma for observers along a path across Western Australia from Esperence to west of Broome.

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.26 mag to 11.00 mag (the magnitude of the asteroid) for at most 10.8 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, astrometry for the asteroid kindly provided by the IAU Minor Planet Center.

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       Alt
  E. Longitude   Latitude      U.T.    Alt    Az   Alt    Limit 1    Limit 2    Limit 3    Limit 4   Crn
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "
                                                        Longitude  Longitude  Longitude  Longitude
    119 50 52   -15  0  0   13 34 45    62   185   -54  120  9 31  119 32 14  120 38 15  119  3 34  -0.10
    119 58 10   -16  0  0   13 34 29    63   185   -54  120 16 54  119 39 26  120 45 46  119 10 38  -0.10
    120  5 36   -17  0  0   13 34 12    64   185   -55  120 24 26  119 46 47  120 53 28  119 17 49  -0.10

    120 13 11   -18  0  0   13 33 56    65   186   -55  120 32  8  119 54 16  121  1 19  119 25  9  -0.10
    120 20 56   -19  0  0   13 33 39    66   186   -55  120 39 59  120  1 54  121  9 20  119 32 36  -0.10
    120 28 50   -20  0  0   13 33 23    67   186   -55  120 48  0  120  9 40  121 17 32  119 40 12  -0.10
    120 36 53   -21  0  0   13 33  6    68   187   -56  120 56 11  120 17 36  121 25 55  119 47 56  -0.10
    120 45  6   -22  0  0   13 32 49    69   187   -56  121  4 32  120 25 41  121 34 29  119 55 49  -0.10

    120 53 29   -23  0  0   13 32 32    70   188   -56  121 13  3  120 33 56  121 43 13  120  3 51  -0.09
    121  2  2   -24  0  0   13 32 15    71   188   -56  121 21 46  120 42 20  121 52 10  120 12  1  -0.09
    121 10 46   -25  0  0   13 31 58    72   189   -56  121 30 39  120 50 55  122  1 18  120 20 21  -0.09
    121 19 41   -26  0  0   13 31 40    73   189   -57  121 39 44  120 59 39  122 10 38  120 28 50  -0.09
    121 28 47   -27  0  0   13 31 23    74   190   -57  121 49  1  121  8 35  122 20 11  120 37 30  -0.09

    121 38  5   -28  0  0   13 31  6    75   191   -57  121 58 29  121 17 41  122 29 57  120 46 19  -0.09
    121 47 34   -29  0  0   13 30 48    76   192   -57  122  8 11  121 26 59  122 39 57  120 55 19  -0.09
    121 57 16   -30  0  0   13 30 30    77   193   -57  122 18  5  121 36 29  122 50 10  121  4 29  -0.09
    122  7 11   -31  0  0   13 30 13    77   194   -57  122 28 13  121 46 11  123  0 38  121 13 51  -0.09
    122 17 19   -32  0  0   13 29 55    78   196   -57  122 38 35  121 56  5  123 11 21  121 23 25  -0.08

    122 27 41   -33  0  0   13 29 37    79   198   -57  122 49 11  122  6 13  123 22 20  121 33 10  -0.08
    122 38 18   -34  0  0   13 29 19    80   200   -57  123  0  2  122 16 34  123 33 34  121 43  9  -0.08
    122 49  9   -35  0  0   13 29  1    81   203   -57  123 11 10  122 27 10  123 45  6  121 53 20  -0.08
    123  0 16   -36  0  0   13 28 43    82   206   -57  123 22 34  122 38  0  123 56 56  122  3 45  -0.08
    123 11 40   -37  0  0   13 28 25    83   210   -56  123 34 15  122 49  7  124  9  5  122 14 24  -0.08

    123 23 22   -38  0  0   13 28  7    83   216   -56  123 46 15  123  0 29  124 21 33  122 25 19  -0.08
   - 66  0  0    .. .. ..   .. .. ..    ..    ..    ..   .. .. ..   .. .. ..   .. .. ..  -50 48 57   ....

Uncertainty in time = +/- 8 secs

Prediction of 2016 May  5.0


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