Graze logo


ASTROMETRIC UPDATE:
OCCULTATION BY (852) WLADILENA - 2008 OCT 16

[Detailed Finder Charts]


Updated:   2008 SEP 11, 20:26 UT

Event Rank : 50

(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.

Wladilena Update Map


On 2008 Oct 16 UT, the 31 km diameter asteroid (852) Wladilena will occult a 10.6 mag star in the constellation Auriga for observers along a path across Western Australia.

In the case of an occultation, the combined light of the asteroid and the star will drop by 4.0 mag to 14.6 mag (the magnitude of the asteroid) for at most 2.5 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
    115 24 33   -37  0  0   18 49 39     4    23   -30  115 35 55  115 13  9  116  4 45  114 44 10
    115 54 14   -36  0  0   18 49 40     5    22   -30  116  5 26  115 43  1  116 33 48  115 14 30
    116 22 53   -35  0  0   18 49 40     6    22   -30  116 33 55  116 11 51  117  1 52  115 43 46
    116 50 34   -34  0  0   18 49 42     7    22   -31  117  1 26  116 39 42  117 28 59  116 12  1
    117 17 21   -33  0  0   18 49 43     8    22   -31  117 28  3  117  6 37  117 55 13  116 39 20

    117 43 15   -32  0  0   18 49 44     9    21   -31  117 53 49  117 32 40  118 20 37  117  5 45
    118  8 20   -31  0  0   18 49 46    10    21   -32  118 18 46  117 57 54  118 45 14  117 31 20
    118 32 40   -30  0  0   18 49 48    12    21   -32  118 42 58  118 22 21  119  9  6  117 56  6
    118 56 15   -29  0  0   18 49 50    13    21   -32  119  6 26  118 46  3  119 32 15  118 20  8
    119 19  9   -28  0  0   18 49 52    14    20   -32  119 29 13  119  9  4  119 54 45  118 43 26

    119 41 23   -27  0  0   18 49 54    15    20   -33  119 51 21  119 31 25  120 16 36  119  6  4
    120  3  1   -26  0  0   18 49 56    16    20   -33  120 12 52  119 53  9  120 37 52  119 28  4
    120 24  3   -25  0  0   18 49 59    17    20   -33  120 33 48  120 14 17  120 58 33  119 49 27
    120 44 31   -24  0  0   18 50  2    18    20   -33  120 54 11  120 34 51  121 18 42  120 10 15
    121  4 27   -23  0  0   18 50  4    19    20   -34  121 14  2  120 54 52  121 38 19  120 30 30

    121 23 53   -22  0  0   18 50  7    20    20   -34  121 33 23  121 14 23  121 57 28  120 50 14
    121 42 50   -21  0  0   18 50 11    21    20   -34  121 52 15  121 33 25  122 16  8  121  9 27
    122  1 20   -20  0  0   18 50 14    22    19   -34  122 10 40  121 51 59  122 34 22  121 28 12
    122 19 23   -19  0  0   18 50 18    23    19   -34  122 28 39  122 10  6  122 52 11  121 46 30
    122 37  1   -18  0  0   18 50 21    24    19   -35  122 46 14  122 27 48  123  9 35  122  4 23

    122 54 16   -17  0  0   18 50 25    25    19   -35  123  3 24  122 45  6  123 26 37  122 21 50
    123 11  7   -16  0  0   18 50 29    26    19   -35  123 20 13  123  2  2  123 43 17  122 38 54
    123 27 37   -15  0  0   18 50 33    27    19   -35  123 36 40  123 18 35  123 59 35  122 55 36
    123 43 47   -14  0  0   18 50 37    28    19   -35  123 52 46  123 34 47  124 15 34  123 11 56
    123 59 37   -13  0  0   18 50 42    29    19   -35  124  8 33  123 50 40  124 31 14  123 27 56

    124 15  8   -12  0  0   18 50 46    30    19   -35  124 24  2  124  6 14  124 46 36  123 43 36
    124 30 21   -11  0  0   18 50 51    31    19   -36  124 39 12  124 21 29  125  1 41  123 58 58
    124 45 17   -10  0  0   18 50 56    32    19   -36  124 54  6  124 36 28  125 16 30  124 14  2
Uncertainty in time = +/- 3 secs

[Prediction of 2008 Sep 11.0]

Use these links for further information:
[Planetary Occultations] [Using the Predictions]
[Observing Details] [Timing Details] [Reporting Details] [Report Form]
[Asteroid Occultation Results]


[Site Map] [What's an Occultation?]
[Total Occultations] [Grazing Occultations] [Planetary Occultations] [Jovian Satellite Eclipses]
[Timing Occultations] [Reporting Observations] [Coming Events] [Software]
[About Us] [Publications] [Membership] [Links]

[Top of Page][Return to Home Page]