Graze logo


ASTROMETRIC UPDATE:
OCCULTATION BY (536) MERAPI - 2009 Jun 09

[Detailed Finder Charts]


Updated:   2009 MAY 04, 02:30 UT

Event Rank : 80

(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.

Merapi Update Map


On 2009 Jun 09 UT, the 155 km diameter asteroid (536) Merapi will occult a 12.9 mag star in the constellation Scorpius for observers along a broad path across Australia from Nambour in Queensland across northwestern New South Wales to Clare in South Australia. Both Adelaide and Brisbane are just south of the path, well inside the one sigma limit.

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.9 mag to 13.1 mag (the magnitude of the asteroid) for at most 10.2 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
    132  0  0   -36 36 14   17 11 29    59   271   -61  -35 47 25  -37 25 17  -34 41 21  -38 32 23
    133  0  0   -36 11 17   17 11 23    58   270   -60  -35 22 20  -37  0 29  -34 16  4  -38  7 46
    134  0  0   -35 45 52   17 11 17    57   269   -59  -34 56 46  -36 35 12  -33 50 20  -37 42 40
    135  0  0   -35 19 59   17 11 12    57   267   -59  -34 30 45  -36  9 27  -33 24  8  -37 17  6
    136  0  0   -34 53 37   17 11  6    56   266   -58  -34  4 15  -35 43 13  -32 57 27  -36 51  4

    137  0  0   -34 26 48   17 11  0    55   265   -57  -33 37 17  -35 16 32  -32 30 19  -36 24 34
    138  0  0   -33 59 30   17 10 54    54   264   -57  -33  9 52  -34 49 22  -32  2 43  -35 57 35
    139  0  0   -33 31 45   17 10 49    53   263   -56  -32 41 59  -34 21 45  -31 34 40  -35 30  9
    140  0  0   -33  3 32   17 10 43    52   262   -55  -32 13 39  -33 53 40  -31  6 10  -35  2 14
    141  0  0   -32 34 53   17 10 37    51   261   -54  -31 44 52  -33 25  8  -30 37 13  -34 33 53

    142  0  0   -32  5 46   17 10 32    51   260   -54  -31 15 38  -32 56  9  -30  7 49  -34  5  4
    143  0  0   -31 36 13   17 10 26    50   259   -53  -30 45 58  -32 26 43  -29 37 59  -33 35 48
    144  0  0   -31  6 14   17 10 20    49   258   -52  -30 15 52  -31 56 50  -29  7 44  -33  6  5
    145  0  0   -30 35 49   17 10 15    48   257   -51  -29 45 20  -31 26 32  -28 37  3  -32 35 56
    146  0  0   -30  4 58   17 10  9    47   257   -50  -29 14 23  -30 55 48  -28  5 57  -32  5 21

    147  0  0   -29 33 42   17 10  4    46   256   -50  -28 43  1  -30 24 39  -27 34 27  -31 34 21
    148  0  0   -29  2  2   17  9 58    45   255   -49  -28 11 15  -29 53  5  -27  2 33  -31  2 55
    149  0  0   -28 29 58   17  9 53    44   254   -48  -27 39  5  -29 21  7  -26 30 15  -30 31  5
    150  0  0   -27 57 31   17  9 48    43   254   -47  -27  6 32  -28 48 45  -25 57 35  -29 58 51
    151  0  0   -27 24 41   17  9 42    42   253   -46  -26 33 37  -28 16  0  -25 24 32  -29 26 14

    152  0  0   -26 51 29   17  9 37    41   252   -45  -26  0 19  -27 42 53  -24 51  8  -28 53 13
    153  0  0   -26 17 55   17  9 32    40   252   -44  -25 26 41  -27  9 24  -24 17 23  -28 19 51
    154  0  0   -25 44  0   17  9 27    39   251   -43  -24 52 42  -26 35 34  -23 43 18  -27 46  7
    155  0  0   -25  9 45   17  9 22    38   250   -42  -24 18 23  -26  1 23  -23  8 54  -27 12  2
    156  0  0   -24 35 11   17  9 17    37   250   -41  -23 43 45  -25 26 53  -22 34 11  -26 37 37

    157  0  0   -24  0 19   17  9 12    36   249   -40  -23  8 49  -24 52  4  -21 59 10  -26  2 53

Uncertainty in time = +/- 7 secs

Prediction of 2009 May  4.0

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]