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ASTROMETRIC UPDATE:
OCCULTATION BY (916) AMERICA - 2015 Mar 26

[Detailed Finder Charts]


Updated:   2014 APR 10, 02:51 UT

Event Rank : 46

(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.

America Update Map


On 2015 Mar 26 UT, the 35 km diameter asteroid (916) America will occult a 10.4 mag star in the constellation Cancer for observers along a path across Australia, from west of Adelaide across South Australia and western Queensland, passing west of Mt Isa.

In the case of an occultation, the combined light of the asteroid and the star will drop by 5.6 mag to 16.0 mag (the magnitude of the asteroid) for at most 9.6 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: 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 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
    137 11 15   -38  0  0   12 18 46    31   343   -39  136 58  8  137 24 23  136 21 29  138  1 16
    137 10 10   -37  0  0   12 18 29    32   343   -40  136 57 13  137 23  7  136 21  4  137 59 31
    137  9 48   -36  0  0   12 18 12    33   343   -40  136 57  2  137 22 36  136 21 20  137 58 31
    137 10  9   -35  0  0   12 17 54    34   343   -41  136 57 32  137 22 47  136 22 16  137 58 16
    137 11 10   -34  0  0   12 17 35    35   343   -41  136 58 42  137 23 40  136 23 51  137 58 43

    137 12 51   -33  0  0   12 17 16    36   343   -42  137  0 31  137 25 11  136 26  4  137 59 51
    137 15  9   -32  0  0   12 16 57    37   342   -42  137  2 57  137 27 21  136 28 52  138  1 38
    137 18  3   -31  0  0   12 16 37    38   342   -43  137  5 59  137 30  8  136 32 15  138  4  3
    137 21 33   -30  0  0   12 16 17    39   342   -43  137  9 36  137 33 31  136 36 13  138  7  5
    137 25 37   -29  0  0   12 15 56    40   342   -43  137 13 47  137 37 28  136 40 43  138 10 44

    137 30 15   -28  0  0   12 15 35    41   341   -44  137 18 31  137 41 59  136 45 45  138 14 56
    137 35 25   -27  0  0   12 15 13    42   341   -44  137 23 47  137 47  3  136 51 18  138 19 43
    137 41  6   -26  0  0   12 14 51    42   341   -45  137 29 34  137 52 39  136 57 21  138 25  3
    137 47 19   -25  0  0   12 14 29    43   341   -45  137 35 52  137 58 46  137  3 54  138 30 55
    137 54  2   -24  0  0   12 14  6    44   340   -46  137 42 40  138  5 24  137 10 56  138 37 18

    138  1 14   -23  0  0   12 13 43    45   340   -46  137 49 57  138 12 31  137 18 27  138 44 12
    138  8 55   -22  0  0   12 13 20    46   340   -46  137 57 43  138 20  8  137 26 26  138 51 36
    138 17  5   -21  0  0   12 12 56    47   339   -47  138  5 58  138 28 14  137 34 52  138 59 30
    138 25 43   -20  0  0   12 12 32    48   339   -47  138 14 39  138 36 48  137 43 44  139  7 52
    138 34 49   -19  0  0   12 12  7    49   338   -48  138 23 49  138 45 50  137 53  4  139 16 44

    138 44 21   -18  0  0   12 11 42    50   338   -48  138 33 25  138 55 19  138  2 50  139 26  3
    138 54 21   -17  0  0   12 11 17    51   337   -48  138 43 27  139  5 15  138 13  1  139 35 51
    139  4 47   -16  0  0   12 10 51    52   337   -49  138 53 56  139 15 38  138 23 38  139 46  6
    139 15 39   -15  0  0   12 10 25    53   336   -49  139  4 51  139 26 28  138 34 41  139 56 48
    139 26 57   -14  0  0   12  9 59    53   335   -49  139 16 12  139 37 44  138 46  8  140  7 57

    139 38 42   -13  0  0   12  9 33    54   335   -50  139 27 58  139 49 25  138 58  1  140 19 32
    139 50 51   -12  0  0   12  9  6    55   334   -50  139 40 10  140  1 33  139 10 18  140 31 35
    140  3 27   -11  0  0   12  8 39    56   333   -50  139 52 47  140 14  7  139 23  0  140 44  3
    140 16 27   -10  0  0   12  8 11    57   332   -50  140  5 49  140 27  6  139 36  7  140 56 58
    140 29 54   - 9  0  0   12  7 43    58   331   -51  140 19 17  140 40 31  139 49 38  141 10 19

    140 43 45   - 8  0  0   12  7 15    58   330   -51  140 33 10  140 54 21  140  3 34  141 24  7
    140 58  2   - 7  0  0   12  6 47    59   329   -51  140 47 27  141  8 38  140 17 54  141 38 20
    141 12 45   - 6  0  0   12  6 19    60   328   -51  141  2 11  141 23 19  140 32 39  141 53  0
    141 27 52   - 5  0  0   12  5 50    61   327   -51  141 17 19  141 38 27  140 47 49  142  8  7
    141 43 26   - 4  0  0   12  5 21    62   326   -52  141 32 53  141 54  0  141  3 23  142 23 39

    141 59 25   - 3  0  0   12  4 52    62   325   -52  141 48 52  142  9 59  141 19 23  142 39 39


Uncertainty in time = +/- 14 secs

Prediction of 2015 Feb 12.0

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