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ASTROMETRIC UPDATE:
OCCULTATION BY (4672) TAKUBOKU - 2011 JUL 19

[Detailed Finder Charts]


Updated:   2011 Jul 01, 23:11 UT

Event Rank : 21

(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.

Takuboku Update Map


On 2011 Jul 19 UT, the 36 km diameter asteroid (4672) Takuboku will occult a 8.2 mag star in the constellation Libra for observers along a signficant uncertainty path across far north-eastern Northern Territory, Queensland and north-eastern New South Wales.

In the case of an occultation, the combined light of the asteroid and the star will drop by 8.0 mag to 16.2 mag (the magnitude of the asteroid) for at most 4.4 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: .

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 HIP  75487 by 4672 Takuboku on 2011 Jul 19 
                  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
    135  1 45   -10  0  0   13 38  2    46   264   -66  134 46 59  135 16 36  133 13 30  136 53 58
    135 31 22   -11  0  0   13 38 17    45   265   -67  135 16 23  135 46 25  133 41 39  137 25 14
    136  2 41   -12  0  0   13 38 32    45   266   -68  135 47 29  136 17 58  134 11 21  137 58 23
    137  0  0   -13 41 49   13 38 58    44   268   -70  -14  8 11  -13 15  3  -16 49 47  -10 11 51
    138  0  0   -15 18 52   13 39 22    43   269   -71  -15 43 42  -14 53 43  -18 16 36  -12  2 51

    139  0  0   -16 47 39   13 39 45    42   270   -73  -17 11 11  -16 23 51  -19 36 42  -13 43  5
    140  0  0   -18  9 20   13 40  6    41   271   -74  -18 31 45  -17 46 40  -20 50 53  -15 14 20
    141  0  0   -19 24 47   13 40 25    40   272   -75  -19 46 14  -19  3  6  -21 59 50  -16 37 57
    142  0  0   -20 34 43   13 40 43    39   272   -76  -20 55 21  -20 13 54  -23  4  3  -17 54 57
    143  0  0   -21 39 45   13 41  0    38   273   -77  -21 59 38  -21 19 41  -24  4  0  -19  6  8

    144  0  0   -22 40 20   13 41 16    37   273   -78  -22 59 34  -22 20 57  -25  0  4  -20 12  8
    145  0  0   -23 36 54   13 41 31    35   273   -79  -23 55 33  -23 18  6  -25 52 34  -21 13 31
    146  0  0   -24 29 46   13 41 44    34   273   -80  -24 47 54  -24 11 31  -26 41 47  -22 10 42
    147  0  0   -25 19 16   13 41 58    33   273   -80  -25 36 55  -25  1 30  -27 27 58  -23  4  4
    148  0  0   -26  5 39   13 42 10    32   273   -81  -26 22 52  -25 48 19  -28 11 19  -23 53 56

    149  0  0   -26 49  7   13 42 21    31   273   -81  -27  5 57  -26 32 11  -28 52  2  -24 40 34
    150  0  0   -27 29 53   13 42 32    31   273   -81  -27 46 21  -27 13 19  -29 30 17  -25 24 12
    151  0  0   -28  8  7   13 42 43    30   273   -81  -28 24 16  -27 51 53  -30  6 13  -26  5  4
    152  0  0   -28 43 59   13 42 53    29   273   -81  -28 59 49  -28 28  3  -30 39 57  -26 43 19
    153  0  0   -29 17 36   13 43  2    28   273   -81  -29 33 10  -29  1 57  -31 11 37  -27 19  8

    154  0  0   -29 49  6   13 43 11    27   272   -81  -30  4 25  -29 33 42  -31 41 19  -27 52 39
    155  0  0   -30 18 35   13 43 19    26   272   -80  -30 33 40  -30  3 26  -32  9  9  -28 24  0
    156  0  0   -30 46 10   13 43 27    25   272   -80  -31  1  2  -30 31 13  -32 35 13  -28 53 16
    157  0  0   -31 11 55   13 43 35    24   271   -79  -31 26 36  -30 57 11  -32 59 34  -29 20 36
    158  0  0   -31 35 56   13 43 42    23   271   -79  -31 50 26  -31 21 23  -33 22 17  -29 46  3

    159  0  0   -31 58 17   13 43 49    22   271   -78  -32 12 36  -31 43 54  -33 43 26  -30  9 43
    160  0  0   -32 19  1   13 43 55    21   270   -78  -32 33 11  -32  4 48  -34  3  4  -30 31 40
    161  0  0   -32 38 13   13 44  1    21   270   -77  -32 52 14  -32 24  8  -34 21 15  -30 51 59
    162  0  0   -32 55 55   13 44  7    20   269   -77  -33  9 49  -32 41 58  -34 38  2  -31 10 42
    163  0  0   -33 12 10   13 44 13    19   269   -76  -33 25 57  -32 58 20  -34 53 26  -31 27 53

    164  0  0   -33 27  1   13 44 18    18   268   -75  -33 40 41  -33 13 18  -35  7 31  -31 43 35
    165  0  0   -33 40 30   13 44 23    17   268   -75  -33 54  5  -33 26 53  -35 20 18  -31 57 50
    166  0  0   -33 52 40   13 44 28    16   267   -74  -34  6  9  -33 39  8  -35 31 49  -32 10 42
    167  0  0   -34  3 32   13 44 32    15   267   -73  -34 16 56  -33 50  4  -35 42  7  -32 22 11
    168  0  0   -34 13  7   13 44 36    15   266   -73  -34 26 27  -33 59 44  -35 51 12  -32 32 20

    169  0  0   -34 21 28   13 44 40    14   266   -72  -34 34 44  -34  8  9  -35 59  6  -32 41 10
    170  0  0   -34 28 35   13 44 44    13   265   -71  -34 41 48  -34 15 19  -36  5 50  -32 48 43
    171  0  0   -34 34 30   13 44 47    12   265   -70  -34 47 40  -34 21 17  -36 11 25  -32 54 59
    172  0  0   -34 39 14   13 44 50    11   264   -70  -34 52 22  -34 26  3  -36 15 52  -33  0  1
    173  0  0   -34 42 47   13 44 53    10   264   -69  -34 55 53  -34 29 38  -36 19 11  -33  3 49

    174  0  0   -34 45  9   13 44 56    10   263   -68  -34 58 14  -34 32  2  -36 21 24  -33  6 23
    175  0  0   -34 46 23   13 44 58     9   263   -68  -34 59 26  -34 33 17  -36 22 30  -33  7 45
    176  0  0   -34 46 27   13 45  1     8   262   -67  -34 59 30  -34 33 21  -36 22 30  -33  7 54
Uncertainty in time = +/- 16 secs

Prediction of 2011 Jul  2.0


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