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ASTROMETRIC UPDATE:
OCCULTATION BY (1886) LOWELL - 2012 Jun 10

[Detailed Finder Charts]


Updated:   2012 APR 19, 00:00 UT

Event Rank : 18

(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.

Lowell Update Map


On 2012 Jun 10 UT, the 20 km diameter asteroid (1886) Lowell will occult a 9.2 mag star in the constellation Leo for observers along a narrow path across Western Australia from Dampier at sunset to Eucla just after evening twilight.

In the case of an occultation, the combined light of the asteroid and the star will drop by 8.3 mag to 17.5 mag (the magnitude of the asteroid) for at most 1.0 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  '  "
                                                        Longitude  Longitude  Longitude  Longitude
    131 15 41   -37  0  0    9 28 59    33   357   -16  131  6 15  131 25  6  129 55 39  132 35  9
    130 33 53   -36  0  0    9 28 55    34   358   -15  130 24 32  130 43 13  129 14 34  131 52 37
    129 51 58   -35  0  0    9 28 50    35   359   -15  129 42 42  130  1 14  128 33 18  131 10  2
    129  9 54   -34  0  0    9 28 46    36   360   -14  129  0 42  129 19  5  127 51 50  130 27 21
    128 27 39   -33  0  0    9 28 41    37     1   -13  128 18 31  128 36 46  127 10  7  129 44 32

    127 45 10   -32  0  0    9 28 36    38     1   -12  127 36  6  127 54 14  126 28  8  129  1 33
    127  2 26   -31  0  0    9 28 31    39     2   -11  126 53 25  127 11 26  125 45 50  128 18 21
    126 19 24   -30  0  0    9 28 26    40     3   -10  126 10 26  126 28 22  125  3 11  127 34 55
    125 36  2   -29  0  0    9 28 21    41     4    -9  125 27  6  125 44 57  124 20  9  126 51 12
    124 52 18   -28  0  0    9 28 15    41     5    -8  124 43 24  125  1 11  123 36 42  126  7 10

    124  8 10   -27  0  0    9 28 10    42     6    -7  123 59 18  124 17  2  122 52 48  125 22 46
    123 23 35   -26  0  0    9 28  4    43     7    -6  123 14 45  123 32 25  122  8 24  124 37 59
    122 38 31   -25  0  0    9 27 58    44     8    -5  122 29 42  122 47 20  121 23 28  123 52 46
    121 52 56   -24  0  0    9 27 52    45    10    -4  121 44  7  122  1 44  120 37 57  123  7  5
    121  6 46   -23  0  0    9 27 46    46    11    -3  120 57 57  121 15 34  119 51 49  122 20 52

    120 20  0   -22  0  0    9 27 40    47    12    -2  120 11 11  120 28 48  119  5  0  121 34  6
    119 32 34   -21  0  0    9 27 34    48    13    -1  119 23 44  119 41 22  118 17 29  120 46 43

Uncertainty in time = +/- 4 secs

Prediction of 2012 Apr 19.0

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