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ASTROMETRIC UPDATE:
OCCULTATION BY (24) THEMIS - 2004 MAY 31

[Detailed Finder Charts]


UPDATE: 2004 MAY 01, 23:28 UT

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 the time for your location)

Themis Update Map


On 2004 May 31 UT, the 127 km diameter asteroid (24) Themis will occult a 9.4 mag star in the constellation Sagittarius for observers along a path across near New Zealand.

In the case of an occultation, the combined light of the asteroid and the star will drop by 2.7 mag to 12.0 mag (the magnitude of the asteroid) for at most 10.7 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, TMO astrometry for the asteroid kindly provided by Bill Owen, 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
    146  0  0    .. .. ..   .. .. ..    ..    ..    ..   .. .. ..  -40 16 37   .. .. ..  -40 51  9
    147  0  0   -39 50 54    8 14 59     0   122   -15  -38 56 48  -40 45 57   .. .. ..  -41 20 34
    148  0  0   -40 20  7    8 14 58     1   121   -16  -39 25 55  -41 15 16  -38 52 45  -41 49 57
    149  0  0   -40 49 19    8 14 58     2   120   -17  -39 55  1  -41 44 33  -39 21 47  -42 19 18
    150  0  0   -41 18 28    8 14 57     3   120   -17  -40 24  4  -42 13 48  -39 50 48  -42 48 37

    151  0  0   -41 47 33    8 14 57     4   119   -18  -40 53  4  -42 42 58  -40 19 45  -43 17 51
    152  0  0   -42 16 34    8 14 56     5   118   -19  -41 22  1  -43 12  4  -40 48 39  -43 47  0
    153  0  0   -42 45 30    8 14 55     6   118   -20  -41 50 52  -43 41  5  -41 17 27  -44 16  3
    154  0  0   -43 14 19    8 14 53     7   117   -21  -42 19 38  -44  9 59  -41 46 11  -44 45  0
    155  0  0   -43 43  2    8 14 52     8   116   -21  -42 48 17  -44 38 45  -42 14 47  -45 13 49

    156  0  0   -44 11 36    8 14 51     8   116   -22  -43 16 48  -45  7 23  -42 43 17  -45 42 29
    157  0  0   -44 40  2    8 14 49     9   115   -23  -43 45 11  -45 35 52  -43 11 38  -46 11  0
    158  0  0   -45  8 19    8 14 47    10   114   -24  -44 13 25  -46  4 11  -43 39 51  -46 39 21
    159  0  0   -45 36 25    8 14 45    11   114   -25  -44 41 29  -46 32 19  -44  7 53  -47  7 30
    160  0  0   -46  4 19    8 14 43    12   113   -25  -45  9 22  -47  0 16  -44 35 45  -47 35 28

    161  0  0   -46 32  2    8 14 41    13   112   -26  -45 37  3  -47 28  0  -45  3 26  -48  3 14
    162  0  0   -46 59 33    8 14 38    13   111   -27  -46  4 33  -47 55 32  -45 30 55  -48 30 46
    163  0  0   -47 26 50    8 14 36    14   111   -27  -46 31 49  -48 22 49  -45 58 11  -48 58  4
    164  0  0   -47 53 53    8 14 33    15   110   -28  -46 58 52  -48 49 52  -46 25 14  -49 25  7
    165  0  0   -48 20 41    8 14 31    16   109   -29  -47 25 41  -49 16 41  -46 52  3  -49 51 55

    166  0  0   -48 47 14    8 14 28    16   108   -29  -47 52 15  -49 43 13  -47 18 37  -50 18 27
    167  0  0   -49 13 32    8 14 25    17   107   -30  -48 18 33  -50  9 29  -47 44 56  -50 44 43
    168  0  0   -49 39 33    8 14 22    18   107   -31  -48 44 36  -50 35 29  -48 10 59  -51 10 41
    169  0  0   -50  5 17    8 14 19    19   106   -31  -49 10 21  -51  1 11  -48 36 46  -51 36 22
    170  0  0   -50 30 43    8 14 16    19   105   -32  -49 35 50  -51 26 35  -49  2 17  -52  1 45

    171  0  0   -50 55 52    8 14 12    20   104   -33  -50  1  2  -51 51 41  -49 27 30  -52 26 50
    172  0  0   -51 20 43    8 14  9    21   103   -33  -50 25 55  -52 16 29  -49 52 25  -52 51 35
    173  0  0   -51 45 14    8 14  5    21   102   -34  -50 50 30  -52 40 57  -50 17  2  -53 16  1
    174  0  0   -52  9 27    8 14  2    22   101   -34  -51 14 47  -53  5  6  -50 41 21  -53 40  7
    175  0  0   -52 33 20    8 13 58    23   101   -35  -51 38 44  -53 28 55  -51  5 20  -54  3 53

    176  0  0   -52 56 54    8 13 55    23   100   -35  -52  2 22  -53 52 23  -51 29  1  -54 27 19
    177  0  0   -53 20  7    8 13 51    24    99   -36  -52 25 40  -54 15 32  -51 52 22  -54 50 24
    178  0  0   -53 43  0    8 13 47    25    98   -36  -52 48 38  -54 38 19  -52 15 23  -55 13  8
    179  0  0   -54  5 32    8 13 44    25    97   -37  -53 11 16  -55  0 46  -52 38  4  -55 35 31
    180  0  0   -54 27 44    8 13 40    26    96   -37  -53 33 33  -55 22 52  -53  0 24  -55 57 33

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