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ASTROMETRIC UPDATE:
OCCULTATION BY (1108) DEMETER - 2005 MAY 24

[Detailed Finder Charts]


Updated:   2005 MAY 03, 00:25 UT

Event Rank : 45

(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.

Demeter Update Map


On 2005 May 24 UT (before dawn on the 25th), the 26 km diameter asteroid (1108) Demeter will occult a 9.0 mag star in the constellation Pegasus for observers along a path across New Zealand.

In the case of an occultation, the combined light of the asteroid and the star will drop by 6.8 mag to 15.8 mag (the magnitude of the asteroid) for at most 0.9 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, 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
    155 12 13   -71  0  0   18 56  2     0    14   -23  155 42 33  154 41 54  157 11 16  153 13 28
    155 58 59   -70  0  0   18 56  2     1    13   -23  156 27 53  155 30  6  157 52 25  154  5 51
    156 44 20   -69  0  0   18 56  3     3    13   -22  157 11 57  156 16 44  158 32 43  154 56 16
    157 28 29   -68  0  0   18 56  3     4    12   -22  157 54 56  157  2  3  159 12 19  155 44 59
    158 11 36   -67  0  0   18 56  3     5    11   -22  158 37  0  157 46 14  159 51 18  156 32 16

    158 53 52   -66  0  0   18 56  4     6    11   -21  159 18 18  158 29 28  160 29 47  157 18 19
    159 35 24   -65  0  0   18 56  4     7    10   -21  159 58 57  159 11 53  161  7 52  158  3 18
    160 16 18   -64  0  0   18 56  5     8     9   -21  160 39  3  159 53 35  161 45 37  158 47 23
    160 56 41   -63  0  0   18 56  6     9     9   -20  161 18 41  160 34 43  162 23  5  159 30 40
    161 36 37   -62  0  0   18 56  7    10     8   -20  161 57 56  161 15 20  163  0 20  160 13 17

    162 16 11   -61  0  0   18 56  8    11     8   -19  162 36 52  161 55 32  163 37 26  160 55 20
    162 55 27   -60  0  0   18 56  9    12     7   -19  163 15 33  162 35 22  164 14 24  161 36 53
    163 34 28   -59  0  0   18 56 10    13     6   -19  163 54  2  163 14 56  164 51 18  162 18  1
    164 13 17   -58  0  0   18 56 11    14     6   -18  164 32 21  163 54 15  165 28  9  162 58 49
    164 51 58   -57  0  0   18 56 13    15     5   -17  165 10 34  164 33 24  166  5  0  163 39 19

    165 30 33   -56  0  0   18 56 14    16     5   -17  165 48 43  165 12 25  166 41 53  164 19 37
    166  9  5   -55  0  0   18 56 16    17     4   -16  166 26 50  165 51 21  167 18 49  164 59 43
    166 47 35   -54  0  0   18 56 18    18     3   -16  167  4 57  166 30 14  167 55 51  165 39 42
    167 26  6   -53  0  0   18 56 19    19     3   -15  167 43  8  167  9  6  168 32 59  166 19 36
    168  4 40   -52  0  0   18 56 21    20     2   -14  168 21 22  167 48  0  169 10 16  166 59 27

    168 43 19   -51  0  0   18 56 23    21     1   -14  168 59 43  168 26 57  169 47 43  167 39 18
    169 22  5   -50  0  0   18 56 25    22     1   -13  169 38 12  169  6  0  170 25 22  168 19 12
    170  1  0   -49  0  0   18 56 28    23     0   -12  170 16 50  169 45 11  171  3 14  168 59  9
    170 40  5   -48  0  0   18 56 30    24   359   -12  170 55 40  170 24 31  171 41 21  169 39 12
    171 19 22   -47  0  0   18 56 33    25   359   -11  171 34 43  171  4  1  172 19 43  170 19 23

    171 58 52   -46  0  0   18 56 35    26   358   -10  172 14  1  171 43 45  172 58 24  170 59 45
    172 38 38   -45  0  0   18 56 38    27   357    -9  172 53 35  172 23 43  173 37 23  171 40 18
    173 18 42   -44  0  0   18 56 40    28   356    -9  173 33 27  173  3 58  174 16 43  172 21  5
    173 59  4   -43  0  0   18 56 43    29   356    -8  174 13 39  173 44 30  174 56 25  173  2  7
    174 39 47   -42  0  0   18 56 46    30   355    -7  174 54 13  174 25 22  175 36 31  173 43 27

    175 20 52   -41  0  0   18 56 49    31   354    -6  175 35  9  175  6 36  176 17  2  174 25  7
    176  2 21   -40  0  0   18 56 52    32   353    -5  176 16 30  175 48 13  176 58  0  175  7  7
    176 44 16   -39  0  0   18 56 56    33   352    -4  176 58 18  176 30 16  177 39 27  175 49 31
    177 26 39   -38  0  0   18 56 59    34   351    -3  177 40 35  177 12 45  178 21 25  176 32 20
    178  9 32   -37  0  0   18 57  3    35   350    -2  178 23 22  177 55 44  179  3 55  177 15 35

    178 52 56   -36  0  0   18 57  6    35   349    -2  179  6 41  178 39 13  179 46 59  177 59 20
    179 36 55   -35  0  0   18 57 10    36   348    -1  179 50 35  179 23 16 -179 29 20  178 43 36
  

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