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ASTROMETRIC UPDATE:
OCCULTATION BY (418) ALEMANNIA - 2004 APR 25

[Detailed Finder Charts]


UPDATE: 2004 MAR 30, 02:16 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)

Alemannia Update Map


On 2004 Apr 25 UT, the 34 km diameter asteroid (418) Alemannia will occult a 10.7 mag star in the constellation Sagittarius for observers along a path across Australia.

In the case of an occultation, the combined light of the asteroid and the star will drop by 3.6 mag to 14.3 mag (the magnitude of the asteroid) for at most 7.8 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
    179  7 16    17  0  0   17 36 36    47   207    -2  179 20  9  178 54 24  179 55 40  178 18 51
    178 14 25    16  0  0   17 36  9    48   206    -3  178 27 14  178  1 36  179  2 35  177 26 13
    177 21 48    15  0  0   17 35 42    49   205    -4  177 34 33  177  9  2  178  9 45  176 33 47

    176 29 21    14  0  0   17 35 14    51   205    -5  176 42  3  176 16 37  177 17  8  175 41 29
    175 37  1    13  0  0   17 34 45    52   204    -7  175 49 41  175 24 19  176 24 39  174 49 17
    174 44 44    12  0  0   17 34 15    53   203    -8  174 57 23  174 32  4  175 32 17  173 57  6
    173 52 28    11  0  0   17 33 46    55   202    -9  174  5  6  173 39 49  174 39 56  173  4 53
    173  0  8    10  0  0   17 33 15    56   201   -10  173 12 45  172 47 30  173 47 33  172 12 36

    172  7 41     9  0  0   17 32 44    57   200   -11  172 20 19  171 55  4  172 55  6  171 20  9
    171 15  5     8  0  0   17 32 12    59   199   -13  171 27 42  171  2 26  172  2 31  170 27 30
    170 22 14     7  0  0   17 31 40    60   198   -14  170 34 53  170  9 34  171  9 43  169 34 35
    169 29  5     6  0  0   17 31  7    61   196   -15  169 41 45  169 16 24  170 16 40  168 41 20
    168 35 35     5  0  0   17 30 34    62   195   -16  168 48 18  168 22 52  169 23 18  167 47 42

    167 41 40     4  0  0   17 30  0    63   193   -18  167 54 25  167 28 54  168 29 32  166 53 36
    166 47 15     3  0  0   17 29 25    65   191   -19  167  0  3  166 34 26  167 35 19  165 58 58
    165 52 16     2  0  0   17 28 50    66   190   -20  166  5  8  165 39 23  166 40 34  165  3 44
    164 56 39     1  0  0   17 28 15    67   187   -22  165  9 36  164 43 41  165 45 14  164  7 49
    164  0 19     0  0  0   17 27 38    68   185   -23  164 13 21  163 47 16  164 49 13  163 11  8

    163  3 11   - 1  0  0   17 27  2    69   182   -24  163 16 19  162 50  2  163 52 26  162 13 37

                                                         Latitude   Latitude   Latitude   Latitude
    162  0  0   - 2  5 17   17 26 21    70   179   -26  - 2 18 51  - 1 51 41  - 2 56 13  - 1 14  3
    161  0  0   - 3  6 11   17 25 43    71   176   -27  - 3 19 39  - 2 52 42  - 3 56 43  - 2 15 22
    160  0  0   - 4  5 58   17 25  4    72   172   -28  - 4 19 20  - 3 52 36  - 4 56  5  - 3 15 35
    159  0  0   - 5  4 36   17 24 26    73   168   -30  - 5 17 51  - 4 51 21  - 5 54 17  - 4 14 39
    158  0  0   - 6  2  2   17 23 48    73   164   -31  - 6 15  9  - 5 48 54  - 6 51 17  - 5 12 31

    157  0  0   - 6 58 14   17 23 10    74   159   -32  - 7 11 14  - 6 45 13  - 7 47  2  - 6  9 10
    156  0  0   - 7 53 11   17 22 33    74   154   -34  - 8  6  4  - 7 40 16  - 8 41 32  - 7  4 33
    155  0  0   - 8 46 51   17 21 56    75   149   -35  - 8 59 37  - 8 34  3  - 9 34 45  - 7 58 40
    154  0  0   - 9 39 13   17 21 19    75   144   -36  - 9 51 52  - 9 26 33  -10 26 41  - 8 51 29
    153  0  0   -10 30 16   17 20 43    75   139   -37  -10 42 48  -10 17 43  -11 17 18  - 9 42 59

    152  0  0   -11 20  1   17 20  7    74   134   -39  -11 32 25  -11  7 35  -12  6 36  -10 33 11
    151  0  0   -12  8 26   17 19 32    74   130   -40  -12 20 44  -11 56  7  -12 54 35  -11 22  2
    150  0  0   -12 55 32   17 18 57    74   126   -41  -13  7 43  -12 43 20  -13 41 15  -12  9 34
    149  0  0   -13 41 18   17 18 23    73   122   -42  -13 53 22  -13 29 13  -14 26 36  -12 55 47
    148  0  0   -14 25 46   17 17 49    73   118   -43  -14 37 43  -14 13 48  -15 10 39  -13 40 40

    147  0  0   -15  8 55   17 17 16    72   115   -45  -15 20 46  -14 57  4  -15 53 23  -14 24 14
    146  0  0   -15 50 47   17 16 43    71   112   -46  -16  2 31  -15 39  1  -16 34 51  -15  6 30
    145  0  0   -16 31 21   17 16 11    70   109   -47  -16 42 59  -16 19 42  -17 15  1  -15 47 28
    144  0  0   -17 10 39   17 15 40    70   107   -48  -17 22 11  -16 59  6  -17 53 56  -16 27  9
    143  0  0   -17 48 41   17 15  9    69   105   -49  -18  0  7  -17 37 15  -18 31 36  -17  5 35

    142  0  0   -18 25 29   17 14 38    68   103   -50  -18 36 49  -18 14  8  -19  8  2  -17 42 45
    141  0  0   -19  1  3   17 14  8    67   101   -51  -19 12 18  -18 49 48  -19 43 15  -18 18 41
    140  0  0   -19 35 25   17 13 39    66   100   -52  -19 46 34  -19 24 16  -20 17 16  -18 53 23
    139  0  0   -20  8 36   17 13 10    65    99   -53  -20 19 39  -19 57 31  -20 50  6  -19 26 54
    138  0  0   -20 40 36   17 12 42    64    98   -54  -20 51 34  -20 29 37  -21 21 47  -19 59 14

    137  0  0   -21 11 26   17 12 15    63    97   -55  -21 22 20  -21  0 33  -21 52 18  -20 30 24
    136  0  0   -21 41  9   17 11 48    62    96   -56  -21 51 57  -21 30 20  -22 21 43  -21  0 25
    135  0  0   -22  9 45   17 11 21    61    96   -57  -22 20 29  -21 59  1  -22 50  1  -21 29 19
    134  0  0   -22 37 15   17 10 55    60    95   -58  -22 47 54  -22 26 35  -23 17 14  -21 57  6
    133  0  0   -23  3 40   17 10 30    59    95   -59  -23 14 15  -22 53  5  -23 43 23  -22 23 48

    132  0  0   -23 29  2   17 10  5    58    94   -60  -23 39 32  -23 18 31  -24  8 29  -22 49 25
    131  0  0   -23 53 21   17  9 41    57    94   -61  -24  3 47  -23 42 54  -24 32 33  -23 14  0
    130  0  0   -24 16 38   17  9 17    56    94   -62  -24 27  1  -24  6 15  -24 55 36  -23 37 32
    129  0  0   -24 38 56   17  8 53    55    93   -62  -24 49 14  -24 28 36  -25 17 39  -24  0  3
    128  0  0   -25  0 13   17  8 30    54    93   -63  -25 10 29  -24 49 57  -25 38 43  -24 21 35

    127  0  0   -25 20 33   17  8  8    53    93   -64  -25 30 44  -25 10 20  -25 58 50  -24 42  7
    126  0  0   -25 39 54   17  7 46    52    93   -65  -25 50  3  -25 29 45  -26 18  0  -25  1 41
    125  0  0   -25 58 20   17  7 25    51    93   -66  -26  8 25  -25 48 14  -26 36 13  -25 20 18
    124  0  0   -26 15 49   17  7  4    50    93   -66  -26 25 52  -26  5 46  -26 53 32  -25 37 59
    123  0  0   -26 32 24   17  6 43    50    93   -67  -26 42 24  -26 22 24  -27  9 56  -25 54 44

    122  0  0   -26 48  5   17  6 23    49    93   -68  -26 58  2  -26 38  7  -27 25 27  -26 10 35
    121  0  0   -27  2 53   17  6  3    48    94   -68  -27 12 47  -26 52 58  -27 40  5  -26 25 32
    120  0  0   -27 16 48   17  5 44    47    94   -69  -27 26 40  -27  6 55  -27 53 52  -26 39 37
    119  0  0   -27 29 52   17  5 25    46    94   -70  -27 39 42  -27 20  1  -28  6 47  -26 52 49
    118  0  0   -27 42  4   17  5  7    45    94   -70  -27 51 52  -27 32 16  -28 18 52  -27  5  9

    117  0  0   -27 53 27   17  4 49    44    94   -71  -28  3 12  -27 43 40  -28 30  7  -27 16 39
    116  0  0   -28  3 59   17  4 31    43    95   -71  -28 13 43  -27 54 15  -28 40 33  -27 27 18
    115  0  0   -28 13 43   17  4 14    42    95   -72  -28 23 25  -28  4  0  -28 50 10  -27 37  8
    114  0  0   -28 22 38   17  3 57    41    95   -72  -28 32 18  -28 12 56  -28 58 59  -27 46  9
    113  0  0   -28 30 45   17  3 41    40    96   -73  -28 40 24  -28 21  5  -29  7  1  -27 54 22

    112  0  0   -28 38  4   17  3 25    39    96   -73  -28 47 42  -28 28 25  -29 14 15  -28  1 46
    111  0  0   -28 44 36   17  3  9    38    96   -73  -28 54 13  -28 34 59  -29 20 43  -28  8 23
    110  0  0   -28 50 22   17  2 54    37    97   -74  -28 59 58  -28 40 46  -29 26 25  -28 14 13

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