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ASTROMETRIC UPDATE:
OCCULTATION BY (635) VUNDTIA - 2013 May 09

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2013 MAR 17, 21:34 UT

Event Rank : 63

(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.

Vundtia Update Map


On 2013 May 09 UT, the 99 km diameter asteroid (635) Vundtia will occult a 11.9 mag star in the constellation Aquila for observers along a south-to-north path across eastern Australia passing near Mt Gambier, Warrnambool and Cairns.

In the case of an occultation, the combined light of the asteroid and the star will drop by 2.8 mag to 14.6 mag (the magnitude of the asteroid) for at most 19.2 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, 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
    144 34 26   - 9  0  0   17 27 46    76    90   -43  145  2 13  144  6 36  145 55 58  143 12 26
    144 34 57   -10  0  0   17 27 24    76    86   -44  145  2 49  144  7  1  145 56 44  143 12 41
    144 35 10   -11  0  0   17 27  3    76    82   -44  145  3  8  144  7  8  145 57 15  143 12 36
    144 35  5   -12  0  0   17 26 41    76    78   -44  145  3 10  144  6 57  145 57 29  143 12 12
    144 34 41   -13  0  0   17 26 20    75    75   -44  145  2 53  144  6 26  145 57 26  143 11 27

    144 33 58   -14  0  0   17 25 58    75    71   -45  145  2 18  144  5 35  145 57  6  143 10 21
    144 32 56   -15  0  0   17 25 36    74    68   -45  145  1 24  144  4 24  145 56 28  143  8 53
    144 31 33   -16  0  0   17 25 15    74    65   -45  145  0 10  144  2 52  145 55 32  143  7  3
    144 29 49   -17  0  0   17 24 54    73    62   -46  144 58 36  144  0 58  145 54 16  143  4 50
    144 27 43   -18  0  0   17 24 32    73    59   -46  144 56 41  143 58 42  145 52 41  143  2 13

    144 25 15   -19  0  0   17 24 11    72    57   -46  144 54 23  143 56  3  145 50 45  142 59 12
    144 22 23   -20  0  0   17 23 50    72    55   -46  144 51 44  143 52 59  145 48 28  142 55 45
    144 19  8   -21  0  0   17 23 28    71    53   -46  144 48 41  143 49 31  145 45 49  142 51 52
    144 15 27   -22  0  0   17 23  7    70    51   -47  144 45 13  143 45 37  145 42 47  142 47 31
    144 11 20   -23  0  0   17 22 46    69    49   -47  144 41 20  143 41 15  145 39 21  142 42 42

    144  6 46   -24  0  0   17 22 25    69    47   -47  144 37  1  143 36 26  145 35 31  142 37 23
    144  1 44   -25  0  0   17 22  4    68    46   -47  144 32 15  143 31  8  145 31 15  142 31 33
    143 56 12   -26  0  0   17 21 44    67    44   -47  144 27  0  143 25 19  145 26 33  142 25 11
    143 50 10   -27  0  0   17 21 23    66    43   -47  144 21 16  143 18 59  145 21 22  142 18 16
    143 43 35   -28  0  0   17 21  2    65    42   -48  144 15  0  143 12  6  145 15 42  142 10 45

    143 36 28   -29  0  0   17 20 42    64    41   -48  144  8 12  143  4 38  145  9 32  142  2 38
    143 28 45   -30  0  0   17 20 22    64    40   -48  144  0 50  142 56 34  145  2 50  141 53 53
    143 20 25   -31  0  0   17 20  2    63    39   -48  143 52 52  142 47 52  144 55 35  141 44 27
    143 11 27   -32  0  0   17 19 42    62    39   -48  143 44 18  142 38 31  144 47 44  141 34 20
    143  1 49   -33  0  0   17 19 22    61    38   -48  143 35  4  142 28 28  144 39 17  141 23 28

    142 51 28   -34  0  0   17 19  2    60    37   -48  143 25  8  142 17 41  144 30 12  141 11 50
    142 40 22   -35  0  0   17 18 42    59    37   -48  143 14 30  142  6  8  144 20 25  140 59 22
    142 28 29   -36  0  0   17 18 23    58    36   -48  143  3  6  141 53 46  144  9 56  140 46  3
    142 15 47   -37  0  0   17 18  4    57    36   -48  142 50 54  141 40 33  143 58 42  140 31 49
    142  2 12   -38  0  0   17 17 45    56    35   -48  142 37 51  141 26 25  143 46 40  140 16 38

    141 47 41   -39  0  0   17 17 26    55    35   -48  142 23 54  141 11 21  143 33 48  140  0 26
    141 32 12   -40  0  0   17 17  7    54    35   -48  142  9  1  140 55 15  143 20  3  139 43  8
    141 15 40   -41  0  0   17 16 48    53    34   -48  141 53  6  140 38  4  143  5 21  139 24 42
    140 58  1   -42  0  0   17 16 30    52    34   -47  141 36  8  140 19 45  142 49 39  139  5  3
    140 39 12   -43  0  0   17 16 12    51    34   -47  141 18  1  140  0 13  142 32 53  138 44  5

Uncertainty in time = +/- 19 secs

Prediction of 2013 Mar 17.0

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