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ASTROMETRIC UPDATE:
OCCULTATION BY (51) NEMAUSA - 2011 Feb 04

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2010 DEC 09, 22:06 UT

Event Rank : 99

(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.

Nemausa Update Map


On 2011 Feb 04 UT, the 166 km diameter asteroid (51) Nemausa will occult a 11.0 mag star in the constellation Virgo for observers along a somewhat wide path beginning at low altitude over South Australia, centred from Ceduna to Whyalla. Then near Mildura, Griffith, Canberra and Sydney. Later in New Zealand the path is centred slightly south of Auckland.

In the case of an occultation, the combined light of the asteroid and the star will drop by 1.1 mag to 11.5 mag (the magnitude of the asteroid) for at most 17.0 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  '  "
                                                         Latitude   Latitude   Latitude   Latitude
    128  0  0   -31 21 54   13 52 12     1   100   -36  -32 14 25  -30 29 49  -32 40 51  -30  3 56
    129  0  0   -31 31 31   13 52 12     2   100   -36  -32 24  2  -30 39 26  -32 50 27  -30 13 34
    130  0  0   -31 41  5   13 52 12     3    99   -36  -32 33 35  -30 49  1  -33  0  0  -30 23  8
    131  0  0   -31 50 35   13 52 13     3    99   -37  -32 43  5  -30 58 32  -33  9 30  -30 32 40
    132  0  0   -32  0  2   13 52 14     4    98   -37  -32 52 31  -31  7 59  -33 18 56  -30 42  7

    133  0  0   -32  9 25   13 52 15     5    97   -37  -33  1 53  -31 17 23  -33 28 18  -30 51 31
    134  0  0   -32 18 44   13 52 16     6    97   -37  -33 11 11  -31 26 43  -33 37 35  -31  0 51
    135  0  0   -32 27 59   13 52 17     7    96   -38  -33 20 26  -31 35 58  -33 46 49  -31 10  7
    136  0  0   -32 37  9   13 52 18     8    96   -38  -33 29 35  -31 45 10  -33 55 59  -31 19 19
    137  0  0   -32 46 16   13 52 20     9    95   -38  -33 38 41  -31 54 17  -34  5  4  -31 28 27

    138  0  0   -32 55 17   13 52 22     9    95   -38  -33 47 42  -32  3 19  -34 14  4  -31 37 29
    139  0  0   -33  4 14   13 52 24    10    94   -38  -33 56 37  -32 12 17  -34 22 59  -31 46 28
    140  0  0   -33 13  6   13 52 26    11    94   -39  -34  5 28  -32 21 10  -34 31 50  -31 55 21
    141  0  0   -33 21 53   13 52 28    12    93   -39  -34 14 14  -32 29 57  -34 40 35  -32  4  9
    142  0  0   -33 30 34   13 52 30    13    92   -39  -34 22 55  -32 38 40  -34 49 15  -32 12 52

    143  0  0   -33 39 10   13 52 33    14    92   -39  -34 31 30  -32 47 17  -34 57 50  -32 21 29
    144  0  0   -33 47 41   13 52 36    15    91   -39  -34 39 59  -32 55 48  -35  6 19  -32 30  1
    145  0  0   -33 56  6   13 52 39    15    91   -39  -34 48 23  -33  4 14  -35 14 42  -32 38 28
    146  0  0   -34  4 24   13 52 42    16    90   -39  -34 56 41  -33 12 34  -35 22 59  -32 46 48
    147  0  0   -34 12 37   13 52 45    17    90   -39  -35  4 53  -33 20 48  -35 31 10  -32 55  3

    148  0  0   -34 20 44   13 52 48    18    89   -39  -35 12 58  -33 28 56  -35 39 15  -33  3 11
    149  0  0   -34 28 45   13 52 52    19    88   -39  -35 20 57  -33 36 57  -35 47 14  -33 11 13
    150  0  0   -34 36 39   13 52 55    20    88   -39  -35 28 50  -33 44 53  -35 55  6  -33 19  9
    151  0  0   -34 44 26   13 52 59    20    87   -39  -35 36 37  -33 52 41  -36  2 52  -33 26 58
    152  0  0   -34 52  7   13 53  3    21    86   -39  -35 44 16  -34  0 23  -36 10 31  -33 34 41

    153  0  0   -34 59 41   13 53  7    22    86   -39  -35 51 49  -34  7 58  -36 18  3  -33 42 16
    154  0  0   -35  7  8   13 53 11    23    85   -39  -35 59 15  -34 15 26  -36 25 28  -33 49 45
    155  0  0   -35 14 28   13 53 15    24    84   -39  -36  6 33  -34 22 48  -36 32 46  -33 57  7
    156  0  0   -35 21 40   13 53 20    25    84   -39  -36 13 45  -34 30  2  -36 39 57  -34  4 21
    157  0  0   -35 28 46   13 53 24    25    83   -38  -36 20 49  -34 37  8  -36 47  0  -34 11 29

    158  0  0   -35 35 44   13 53 29    26    82   -38  -36 27 45  -34 44  7  -36 53 56  -34 18 28
    159  0  0   -35 42 34   13 53 34    27    82   -38  -36 34 35  -34 50 59  -37  0 45  -34 25 21
    160  0  0   -35 49 17   13 53 39    28    81   -38  -36 41 16  -34 57 43  -37  7 26  -34 32  5
    161  0  0   -35 55 52   13 53 44    29    80   -38  -36 47 50  -35  4 19  -37 13 59  -34 38 42
    162  0  0   -36  2 19   13 53 49    29    79   -37  -36 54 16  -35 10 47  -37 20 24  -34 45 11

    163  0  0   -36  8 38   13 53 55    30    79   -37  -37  0 33  -35 17  8  -37 26 41  -34 51 32
    164  0  0   -36 14 49   13 54  0    31    78   -37  -37  6 43  -35 23 20  -37 32 50  -34 57 45
    165  0  0   -36 20 52   13 54  6    32    77   -37  -37 12 45  -35 29 24  -37 38 51  -35  3 49
    166  0  0   -36 26 46   13 54 12    33    76   -36  -37 18 38  -35 35 20  -37 44 44  -35  9 46
    167  0  0   -36 32 33   13 54 17    33    76   -36  -37 24 23  -35 41  7  -37 50 28  -35 15 34

    168  0  0   -36 38 10   13 54 23    34    75   -36  -37 30  0  -35 46 46  -37 56  4  -35 21 13
    169  0  0   -36 43 40   13 54 29    35    74   -36  -37 35 28  -35 52 17  -38  1 31  -35 26 44
    170  0  0   -36 49  0   13 54 36    36    73   -35  -37 40 47  -35 57 39  -38  6 50  -35 32  7
    171  0  0   -36 54 12   13 54 42    36    72   -35  -37 45 58  -36  2 52  -38 12  0  -35 37 21
    172  0  0   -36 59 15   13 54 48    37    71   -34  -37 51  0  -36  7 56  -38 17  2  -35 42 25

    173  0  0   -37  4  9   13 54 55    38    71   -34  -37 55 53  -36 12 51  -38 21 54  -35 47 21
    174  0  0   -37  8 55   13 55  1    39    70   -34  -38  0 37  -36 17 38  -38 26 38  -35 52  8
    175  0  0   -37 13 31   13 55  8    39    69   -33  -38  5 12  -36 22 15  -38 31 12  -35 56 46
    176  0  0   -37 17 58   13 55 15    40    68   -33  -38  9 38  -36 26 44  -38 35 38  -36  1 15
    177  0  0   -37 22 17   13 55 22    41    67   -33  -38 13 55  -36 31  3  -38 39 54  -36  5 35

    178  0  0   -37 26 25   13 55 29    42    66   -32  -38 18  3  -36 35 13  -38 44  2  -36  9 45
    179  0  0   -37 30 25   13 55 36    42    65   -32  -38 22  2  -36 39 13  -38 48  0  -36 13 46
    180  0  0   -37 34 15   13 55 43    43    64   -31  -38 25 51  -36 43  5  -38 51 49  -36 17 38
   -179  0  0   -37 37 56   13 55 51    44    63   -31  -38 29 31  -36 46 46  -38 55 28  -36 21 21
   -178  0  0   -37 41 28   13 55 58    44    62   -30  -38 33  2  -36 50 19  -38 58 58  -36 24 53

   -177  0  0   -37 44 50   13 56  5    45    61   -30  -38 36 23  -36 53 42  -39  2 19  -36 28 17
   -176  0  0   -37 48  2   13 56 13    46    60   -29  -38 39 34  -36 56 55  -39  5 30  -36 31 30
   -175  0  0   -37 51  5   13 56 21    46    59   -29  -38 42 36  -36 59 59  -39  8 32  -36 34 35
   -174  0  0   -37 53 58   13 56 28    47    57   -28  -38 45 29  -37  2 53  -39 11 24  -36 37 29
   -173  0  0   -37 56 42   13 56 36    48    56   -28  -38 48 12  -37  5 37  -39 14  6  -36 40 14

Uncertainty in time = +/- 4 secs

Prediction of 2010 Dec 10.0

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