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ASTROMETRIC UPDATE:
OCCULTATION BY (1236) THAIS - 2014 JUL 15

[Detailed Finder Charts]


Updated:   2014 Jul 08, 16:45 UT

Event Rank : 17

(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.

Thais Update Map


On 2014 Jul 15 UT, the 20 km diameter asteroid (1236) Thais will occult a 10.7 mag star in the constellation Grus for observers along a large uncertainty path across northern and western Queensland and north-western South Australia.

In the case of an occultation, the combined light of the asteroid and the star will drop by 3.7 mag to 14.4 mag (the magnitude of the asteroid) for at most 3.5 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 :
 Occultation of TYC 7502-00094-1 by 1236 Thais on 2014 Jul 15 
                  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
    143 58 28   -10  0  0   14 44 25    48   137   -78  143 51 14  144  5 41  142 53 37  145  2 21
    143 39 25   -11  0  0   14 44 43    49   136   -79  143 32  8  143 46 42  142 34  9  144 43 44
    143 19 22   -12  0  0   14 45  2    49   135   -80  143 12  2  143 26 42  142 13 37  144 24  7
    142 58 16   -13  0  0   14 45 20    50   134   -81  142 50 53  143  5 39  141 52  0  144  3 31
    142 36  6   -14  0  0   14 45 39    50   133   -82  142 28 38  142 43 32  141 29 16  143 41 52

    142 12 48   -15  0  0   14 45 59    51   132   -83  142  5 17  142 20 19  141  5 22  143 19 10
    141 48 22   -16  0  0   14 46 18    51   131   -84  141 40 46  141 55 56  140 40 16  142 55 21
    141 22 43   -17  0  0   14 46 38    52   130   -85  141 15  3  141 30 23  140 13 55  142 30 23
    140 55 51   -18  0  0   14 46 58    52   129   -86  140 48  5  141  3 35  139 46 17  142  4 14
    140 27 40   -19  0  0   14 47 18    52   127   -87  140 19 50  140 35 30  139 17 16  141 36 51

    139 58  9   -20  0  0   14 47 38    53   126   -88  139 50 12  140  6  5  138 46 51  141  8 10
    139 27 12   -21  0  0   14 47 58    53   125   -88  139 19  9  139 35 14  138 14 57  140 38  8
    138  0  0   -23 35 22   14 48 52    53   122   -87  -23 21 19  -23 49 20  -21 27 10  -25 36 55
    137  0  0   -25 12  9   14 49 27    53   120   -85  -24 58 48  -25 25 26  -23 10 37  -27  8  2
    136  0  0   -26 41 57   14 49 59    53   118   -84  -26 29 12  -26 54 39  -24 46  6  -28 32 53

    135  0  0   -28  5 34   14 50 30    53   116   -82  -27 53 20  -28 17 45  -26 14 40  -29 52 10
    134  0  0   -29 23 42   14 50 59    53   114   -81  -29 11 56  -29 35 26  -27 37  9  -31  6 26
    133  0  0   -30 36 54   14 51 26    53   113   -79  -30 25 32  -30 48 13  -28 54 11  -32 16 10
    132  0  0   -31 45 36   14 51 53    53   112   -78  -31 34 37  -31 56 34  -30  6 20  -33 21 46
    131  0  0   -32 50 15   14 52 18    52   110   -77  -32 39 35  -33  0 52  -31 14  5  -34 23 35

    130  0  0   -33 51  9   14 52 42    52   109   -76  -33 40 47  -34  1 28  -32 17 47  -35 21 54
    129  0  0   -34 48 36   14 53  4    52   108   -74  -34 38 32  -34 58 39  -33 17 48  -36 17  1
    128  0  0   -35 42 53   14 53 26    51   108   -73  -35 33  4  -35 52 41  -34 14 26  -37  9  8
    127  0  0   -36 34 13   14 53 47    51   107   -72  -36 24 38  -36 43 47  -35  7 55  -37 58 28
    126  0  0   -37 22 48   14 54  8    50   106   -71  -37 13 26  -37 32  9  -35 58 28  -38 45 12

    125  0  0   -38  8 49   14 54 27    50   106   -70  -37 59 39  -38 17 58  -36 46 19  -39 29 30
Uncertainty in time = +/- 15 secs

Prediction of 2014 Jul  8.0


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