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ASTROMETRIC UPDATE:
OCCULTATION BY (2060) CHIRON - 2004 APR 22

[Edwin Goffin's Prediction + Finder Charts]


*** NEW UPDATE: 2004 APR 17, 21:01 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)

Chiron Update Map


On 2004 Apr 22 UT, the 166 km diameter asteroid (2060) Chiron will occult a 11.7 mag star in the constellation Sagittarius for observers along a path across E Australia.

*** NOTE THAT THE UNCERTAINTY IN THE PATH IS LARGE ***

In the case of an occultation, the combined light of the asteroid and the star will drop by 6.1 mag to 17.8 mag (the magnitude of the asteroid) for at most 28.4 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, astrometry for the asteroid kindly provided by Gordon Garradd, astrometry for the asteroid kindly provided by R. McNaught, 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
    ... .. ..   -10  0  0   .. .. ..    ..    ..    ..  ... .. ..  ... .. ..  ... .. ..  159  5  0
    ... .. ..   -11  0  0   .. .. ..    ..    ..    ..  ... .. ..  ... .. ..  ... .. ..  158 19 46
    ... .. ..   -12  0  0   .. .. ..    ..    ..    ..  ... .. ..  ... .. ..  ... .. ..  157 34  9
    ... .. ..   -13  0  0   .. .. ..    ..    ..    ..  ... .. ..  ... .. ..  ... .. ..  156 48  6
    ... .. ..   -14  0  0   .. .. ..    ..    ..    ..  ... .. ..  160 24 34  ... .. ..  156  1 34

    160 36 57   -15  0  0   19 27 39    83   276     0  ... .. ..  159 39 13  ... .. ..  155 14 28
    159 51 32   -16  0  0   19 27 14    84   286    -1  160 49 34  158 53 25  ... .. ..  154 26 46

                                                         Latitude   Latitude   Latitude   Latitude
    158  0  0   -18 24 46   19 26 14    84   317    -4  -19 40 30  -17  9 12  -25 28 48  -11 26  4
    157  0  0   -19 40 57   19 25 43    84   333    -5  -20 56 13  -18 25 50  -26 42 15  -12 44 34
    156  0  0   -20 55 49   19 25 12    83   346    -7  -22 10 35  -19 41 12  -27 54 10  -14  2  0
    155  0  0   -22  9 18   19 24 41    82   356    -8  -23 23 31  -20 55 12  -29  4 28  -15 18 17
    154  0  0   -23 21 18   19 24 11    81     3    -9  -24 34 57  -22  7 47  -30 13  7  -16 33 19

    153  0  0   -24 31 47   19 23 42    79     9   -10  -25 44 50  -23 18 52  -31 20  4  -17 47  1
    152  0  0   -25 40 42   19 23 13    78    13   -11  -26 53  6  -24 28 24  -32 25 19  -18 59 18
    151  0  0   -26 47 59   19 22 45    77    17   -13  -27 59 43  -25 36 20  -33 28 49  -20 10  7
    150  0  0   -27 53 37   19 22 18    75    20   -14  -29  4 41  -26 42 38  -34 30 34  -21 19 24
    149  0  0   -28 57 35   19 21 51    74    22   -15  -30  7 57  -27 47 18  -35 30 35  -22 27  7

    148  0  0   -29 59 52   19 21 25    73    24   -16  -31  9 32  -28 50 17  -36 28 52  -23 33 13
    147  0  0   -31  0 28   19 21  0    71    26   -17  -32  9 25  -29 51 35  -37 25 25  -24 37 42
    146  0  0   -31 59 22   19 20 36    70    28   -18  -33  7 36  -30 51 12  -38 20 15  -25 40 32
    145  0  0   -32 56 35   19 20 12    69    30   -19  -34  4  5  -31 49  8  -39 13 24  -26 41 43
    144  0  0   -33 52  8   19 19 49    68    31   -20  -34 58 55  -32 45 24  -40  4 53  -27 41 14

    143  0  0   -34 46  2   19 19 26    66    32   -21  -35 52  6  -33 40  1  -40 54 44  -28 39  6
    142  0  0   -35 38 18   19 19  5    65    34   -22  -36 43 39  -34 33  0  -41 42 59  -29 35 19
    141  0  0   -36 28 57   19 18 44    64    35   -23  -37 33 36  -35 24 22  -42 29 40  -30 29 54
    140  0  0   -37 18  2   19 18 23    63    36   -23  -38 21 58  -36 14  8  -43 14 48  -31 22 52
    139  0  0   -38  5 34   19 18  3    62    37   -24  -39  8 49  -37  2 22  -43 58 27  -32 14 14

    138  0  0   -38 51 34   19 17 44    61    38   -25  -39 54  8  -37 49  3  -44 40 39  -33  4  2
    137  0  0   -39 36  6   19 17 26    59    39   -26  -40 37 59  -38 34 15  -45 21 25  -33 52 18
    136  0  0   -40 19 10   19 17  8    58    40   -27  -41 20 24  -39 17 59  -46  0 48  -34 39  2
    135  0  0   -41  0 49   19 16 51    57    41   -27  -42  1 25  -40  0 17  -46 38 51  -35 24 18
    134  0  0   -41 41  6   19 16 34    56    42   -28  -42 41  3  -40 41 11  -47 15 35  -36  8  6

    133  0  0   -42 20  2   19 16 18    55    43   -29  -43 19 22  -41 20 44  -47 51  4  -36 50 29
    132  0  0   -42 57 39   19 16  2    54    44   -29  -43 56 22  -41 58 57  -48 25 18  -37 31 29
    131  0  0   -43 33 59   19 15 47    53    45   -30  -44 32  7  -42 35 53  -48 58 21  -38 11  7
    130  0  0   -44  9  5   19 15 32    52    46   -31  -45  6 39  -43 11 34  -49 30 14  -38 49 27
    129  0  0   -44 42 59   19 15 18    51    47   -31  -45 39 59  -43 46  1  -50  1  0  -39 26 29

    128  0  0   -45 15 42   19 15  4    50    47   -32  -46 12  9  -44 19 18  -50 30 40  -40  2 15
    127  0  0   -45 47 17   19 14 51    50    48   -32  -46 43 12  -44 51 24  -50 59 17  -40 36 49
    126  0  0   -46 17 45   19 14 38    49    49   -33  -47 13 10  -45 22 24  -51 26 52  -41 10 10
    125  0  0   -46 47  9   19 14 25    48    50   -33  -47 42  4  -45 52 18  -51 53 28  -41 42 23
    124  0  0   -47 15 31   19 14 13    47    51   -34  -48  9 56  -46 21  8  -52 19  7  -42 13 28

    123  0  0   -47 42 51   19 14  2    46    52   -34  -48 36 47  -46 48 57  -52 43 49  -42 43 27
    122  0  0   -48  9 12   19 13 50    45    53   -35  -49  2 41  -47 15 46  -53  7 37  -43 12 21
    121  0  0   -48 34 35   19 13 39    45    54   -35  -49 27 38  -47 41 36  -53 30 32  -43 40 14
    120  0  0   -48 59  3   19 13 29    44    54   -36  -49 51 40  -48  6 29  -53 52 36  -44  7  6
    119  0  0   -49 22 36   19 13 18    43    55   -36  -50 14 48  -48 30 28  -54 13 50  -44 32 59

    118  0  0   -49 45 17   19 13  8    42    56   -37  -50 37  4  -48 53 32  -54 34 16  -44 57 54
    117  0  0   -50  7  6   19 12 59    41    57   -37  -50 58 30  -49 15 45  -54 53 55  -45 21 53
    116  0  0   -50 28  5   19 12 49    41    58   -38  -51 19  7  -49 37  6  -55 12 49  -45 44 58
    115  0  0   -50 48 15   19 12 40    40    59   -38  -51 38 55  -49 57 38  -55 30 58  -46  7 10
    114  0  0   -51  7 38   19 12 31    39    60   -38  -51 57 57  -50 17 22  -55 48 24  -46 28 29

    113  0  0   -51 26 15   19 12 22    38    60   -39  -52 16 14  -50 36 19  -56  5  9  -46 48 59
    112  0  0   -51 44  7   19 12 14    38    61   -39  -52 33 46  -50 54 30  -56 21 12  -47  8 39
    111  0  0   -52  1 15   19 12  6    37    62   -39  -52 50 36  -51 11 57  -56 36 36  -47 27 31
    110  0  0   -52 17 40   19 11 58    36    63   -40  -53  6 43  -51 28 40  -56 51 22  -47 45 36
    109  0  0   -52 33 23   19 11 50    36    64   -40  -53 22  9  -51 44 41  -57  5 29  -48  2 56

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