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ASTROMETRIC UPDATE:
OCCULTATION BY (258) TYCHE - 2004 APR 06

[Edwin Goffin's Prediction + Finder Charts]


UPDATE: 2004 MAR 09, 22:06 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)

Tyche Update Map


On 2004 Apr 06 UT, the 64 km diameter asteroid (258) Tyche will occult a 11.0 mag star in the constellation Virgo 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 2.0 mag to 12.8 mag (the magnitude of the asteroid) for at most 4.2 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  '  "
                                                        Longitude  Longitude  Longitude  Longitude
    ... .. ..   -15  0  0   .. .. ..    ..    ..    ..  ... .. ..  ... .. ..  147 34  6  ... .. ..
    ... .. ..   -16  0  0   .. .. ..    ..    ..    ..  147  6  4  ... .. ..  150  0 24  ... .. ..
    148 21  7   -17  0  0    8  8 25    14    95    -2  149 32 28  147  6  8  152 12 57  ... .. ..
    150 38 50   -18  0  0    8  8 18    16    94    -4  151 44 49  149 30  6  154 14 55  146 29 28
    152 44 30   -19  0  0    8  8 10    19    93    -6  153 46 24  151 40 23  156  8 25  148 54 13

    154 40 40   -20  0  0    8  8  2    20    92    -8  155 39 22  153 40  7  157 54 54  151  4 45
    156 29  7   -21  0  0    8  7 54    22    91   -10  157 25 15  155 31 26  159 35 30  153  4 26
    158 11  8   -22  0  0    8  7 45    24    90   -11  159  5 10  157 15 46  161 11  1  154 55 28
    159 47 41   -23  0  0    8  7 37    25    89   -13  160 39 58  158 54 13  162 42  9  156 39 22
    161 19 30   -24  0  0    8  7 28    26    88   -14  162 10 19  160 27 38  164  9 23  158 17 16

    162 47 10   -25  0  0    8  7 19    28    87   -15  163 36 44  161 56 38  165 33 11  159 50  2
    164 11 10   -26  0  0    8  7 11    29    86   -17  164 59 41  163 21 46  166 53 54  161 18 20
    165 31 53   -27  0  0    8  7  2    30    84   -18  166 19 31  164 43 27  168 11 49  162 42 40
    166 49 38   -28  0  0    8  6 53    31    83   -19  167 36 31  166  2  1  169 27 13  164  3 30
    168  4 43   -29  0  0    8  6 44    32    82   -20  168 50 58  167 17 48  170 40 19  165 21 10

    169 17 22   -30  0  0    8  6 35    33    81   -21  170  3  5  168 31  1  171 51 17  166 35 59
    170 27 45   -31  0  0    8  6 26    33    79   -22  171 13  2  169 41 53  173  0 18  167 48 12
    171 36  5   -32  0  0    8  6 17    34    78   -23  172 21  0  170 50 37  174  7 31  168 58  1
    172 42 30   -33  0  0    8  6  8    35    76   -23  173 27  8  171 57 20  175 13  4  170  5 38
    173 47  9   -34  0  0    8  5 59    35    75   -24  174 31 33  173  2 13  176 17  4  171 11 13

    174 50  8   -35  0  0    8  5 50    36    74   -25  175 34 23  174  5 23  177 19 36  172 14 54
    175 51 34   -36  0  0    8  5 41    36    72   -25  176 35 44  175  6 55  178 20 47  173 16 48
    176 51 32   -37  0  0    8  5 32    37    71   -26  177 35 40  176  6 57  179 20 43  174 17  2
    177 50  9   -38  0  0    8  5 24    37    69   -26  178 34 18  177  5 33 -179 40 34  175 15 42
    178 47 28   -39  0  0    8  5 15    37    68   -27  179 31 41  178  2 49 -178 42 57  176 12 53

    179 43 33   -40  0  0    8  5  6    38    66   -27 -179 32  6  178 58 48 -177 46 24  177  8 39
   -179 21 31   -41  0  0    8  4 57    38    65   -28 -178 37  0  179 53 34 -176 50 51  178  3  4
   -178 27 41   -42  0  0    8  4 49    38    63   -28 -177 42 57 -179 12 49 -175 56 14  178 56 13
   -177 34 55   -43  0  0    8  4 40    38    62   -28 -176 49 54 -178 20 18 -175  2 30  179 48  8
   -176 43  8   -44  0  0    8  4 32    38    60   -29 -175 57 49 -177 28 50 -174  9 37 -179 21  8

   -175 52 20   -45  0  0    8  4 23    38    59   -29 -175  6 38 -176 38 23 -173 17 31 -178 31 32
   -175  2 26   -46  0  0    8  4 15    38    57   -29 -174 16 20 -175 48 55 -172 26 11 -177 43  2
   -174 13 27   -47  0  0    8  4  7    38    56   -29 -173 26 52 -175  0 23 -171 35 34 -176 55 37
   -173 25 18   -48  0  0    8  3 59    38    55   -29 -172 38 12 -174 12 46 -170 45 37 -176  9 14
   -172 37 59   -49  0  0    8  3 51    38    53   -29 -171 50 19 -173 26  2 -169 56 19 -175 23 53

   -171 51 29   -50  0  0    8  3 43    37    52   -29 -171  3 10 -172 40  9 -169  7 38 -174 39 33
   -171  5 45   -51  0  0    8  3 35    37    50   -29 -170 16 45 -171 55  7 -168 19 32 -173 56 11
   -170 20 48   -52  0  0    8  3 27    37    49   -29 -169 31  2 -171 10 55 -167 31 58 -173 13 50
   -169 36 35   -53  0  0    8  3 19    37    48   -29 -168 45 59 -170 27 32 -166 44 56 -172 32 27
   -168 53  6   -54  0  0    8  3 12    36    46   -29 -168  1 36 -169 44 57 -165 58 23 -171 52  2

   -168 10 20   -55  0  0    8  3  4    36    45   -28 -167 17 53 -169  3 10 -165 12 19 -171 12 38
   -167 28 18   -56  0  0    8  2 57    35    44   -28 -166 34 47 -168 22 11 -164 26 41 -170 34 13
   -166 46 58   -57  0  0    8  2 50    35    43   -28 -165 52 19 -167 41 59 -163 41 28 -169 56 49
   -166  6 21   -58  0  0    8  2 43    34    41   -28 -165 10 27 -167  2 37 -162 56 38 -169 20 28
   -165 26 26   -59  0  0    8  2 36    34    40   -27 -164 29 13 -166 24  3 -162 12 11 -168 45 12

   -164 47 16   -60  0  0    8  2 29    33    39   -27 -163 48 35 -165 46 19 -161 28  4 -168 11  2
   -164  8 49   -61  0  0    8  2 22    33    38   -27 -163  8 34 -165  9 27 -160 44 16 -167 38  2
   -163 31  7   -62  0  0    8  2 16    32    37   -26 -162 29 10 -164 33 28 -160  0 46 -167  6 15
   -162 54 11   -63  0  0    8  2 10    31    36   -26 -161 50 23 -163 58 25 -159 17 32 -166 35 46
   -162 18  4   -64  0  0    8  2  3    31    35   -25 -161 12 14 -163 24 19 -158 34 33 -166  6 40

   -161 42 47   -65  0  0    8  1 57    30    34   -25 -160 34 45 -162 51 16 -157 51 47 -165 39  3
   -161  8 24   -66  0  0    8  1 51    29    33   -24 -159 57 57 -162 19 18 -157  9 12 -165 13  3
   -160 34 57   -67  0  0    8  1 45    29    32   -24 -159 21 52 -161 48 30 -156 26 47 -164 48 49
   -160  2 31   -68  0  0    8  1 40    28    31   -23 -158 46 32 -161 19  1 -155 44 30 -164 26 32
   -159 31 12   -69  0  0    8  1 34    27    31   -22 -158 12  1 -160 50 56 -155  2 18 -164  6 25

   -159  1  6   -70  0  0    8  1 29    26    30   -22 -157 38 22 -160 24 25 -154 20  9 -163 48 45
   -158 32 22   -71  0  0    8  1 24    25    29   -21 -157  5 40 -159 59 39 -153 38  0 -163 33 51
   -158  5  9   -72  0  0    8  1 19    25    28   -21 -156 34  3 -159 36 54 -152 55 49 -163 22  9
   -157 39 40   -73  0  0    8  1 14    24    28   -20 -156  3 36 -159 16 27 -152 13 31 -163 14  8
   -157 16 13   -74  0  0    8  1  9    23    27   -19 -155 34 32 -158 58 40 -151 31  3 -163 10 28

   -156 55  7   -75  0  0    8  1  4    22    27   -18 -155  7  3 -158 44  3 -150 48 18 -163 11 59
   -156 36 51   -76  0  0    8  1  0    21    26   -18 -154 41 26 -158 33 13 -150  5 10 -163 19 46
   -156 21 59   -77  0  0    8  0 56    20    26   -17 -154 18  3 -158 26 59 -149 21 30 -163 35 14
   -156 11 19   -78  0  0    8  0 52    19    25   -16 -153 57 24 -158 26 29 -148 37  7 -164  0 19
   -156  5 59   -79  0  0    8  0 48    19    25   -15 -153 40 12 -158 33 13 -147 51 46 -164 37 41

   -156  7 29   -80  0  0    8  0 44    18    25   -15 -153 27 25 -158 49 21 -147  5  6 -165 31 10
   -156 18  6   -81  0  0    8  0 41    17    25   -14 -153 20 27 -159 18  0 -146 16 37 -166 46 25
   -156 41 14   -82  0  0    8  0 38    16    25   -13 -153 21 27 -160  3 56 -145 25 34 -168 32 14
   -157 22 15   -83  0  0    8  0 34    15    26   -12 -153 33 47 -161 14 47 -144 30 47 -171  3  5

                                                         Latitude   Latitude   Latitude   Latitude
   -159  0  0   -84 19  7    8  0 31    14    28   -11  -86 44 35  -80 26  1  -63 24 26   .. .. ..
   -160  0  0   -84 50 20    8  0 29    13    28   -11  -86 58 37  -81 55 47   .. .. ..   .. .. ..
   -161  0  0   -85 14 56    8  0 28    13    29   -10  -87 10 30  -82 49 25   .. .. ..   .. .. ..
   -162  0  0   -85 35  4    8  0 27    12    30   -10  -87 20 42  -83 28 10   .. .. ..   .. .. ..
   -163  0  0   -85 51 59    8  0 26    12    31   -10  -87 29 35  -83 58 25   .. .. ..   .. .. ..

   -164  0  0   -86  6 29    8  0 26    12    32    -9  -87 37 25  -84 23  6   .. .. ..  -77 59 24
   -165  0  0   -86 19  5    8  0 25    12    33    -9  -87 44 21  -84 43 48   .. .. ..  -79 27 36
   -166  0  0   -86 30 10    8  0 25    11    34    -9  -87 50 34  -85  1 32   .. .. ..  -80 25 26
   -167  0  0   -86 40  1    8  0 24    11    35    -9  -87 56 10  -85 16 58   .. .. ..  -81  8 57
   -168  0  0   -86 48 49    8  0 24    11    36    -9  -88  1 14  -85 30 34   .. .. ..  -81 43 49

   -169  0  0   -86 56 45    8  0 24    11    37    -9  -88  5 51  -85 42 38   .. .. ..  -82 12 49
   -170  0  0   -87  3 57    8  0 23    11    38    -8  -88 10  4  -85 53 28   .. .. ..  -82 37 31
   -171  0  0   -87 10 30    8  0 23    11    39    -8  -88 13 57  -86  3 15   .. .. ..  -82 58 58
   -172  0  0   -87 16 30    8  0 23    11    40    -8  -88 17 30  -86 12  7   .. .. ..  -83 17 50
   -173  0  0   -87 22  0    8  0 23    10    41    -8  -88 20 48  -86 20 13   .. .. ..  -83 34 37

   -174  0  0   -87 27  5    8  0 22    10    42    -8  -88 23 51  -86 27 38   .. .. ..  -83 49 40
   -175  0  0   -87 31 46    8  0 22    10    43    -8  -88 26 40  -86 34 27   .. .. ..  -84  3 16
   -176  0  0   -87 36  7    8  0 22    10    44    -8  -88 29 19  -86 40 45   .. .. ..  -84 15 37
   -177  0  0   -87 40 10    8  0 22    10    45    -8  -88 31 46  -86 46 35   .. .. ..  -84 26 54
   -178  0  0   -87 43 56    8  0 22    10    46    -8  -88 34  4  -86 52  0   .. .. ..  -84 37 16

   -179  0  0   -87 47 28    8  0 22    10    47    -8  -88 36 13  -86 57  2   .. .. ..  -84 46 49
   -180  0  0   -87 50 45    8  0 22    10    48    -8  -88 38 14  -87  1 44   .. .. ..  -84 55 38
    179  0  0   -87 53 51    8  0 21    10    49    -8  -88 40  8  -87  6  8   .. .. ..  -85  3 49
    178  0  0   -87 56 44    8  0 21    10    50    -8  -88 41 55  -87 10 15   .. .. ..  -85 11 26
    177  0  0   -87 59 28    8  0 21    10    51    -8  -88 43 36  -87 14  6   .. .. ..  -85 18 31

    176  0  0   -88  2  2    8  0 21    10    52    -7  -88 45 11  -87 17 44   .. .. ..  -85 25  9
    175  0  0   -88  4 27    8  0 21    10    53    -7  -88 46 41  -87 21  9   .. .. ..  -85 31 21
    174  0  0   -88  6 44    8  0 21    10    54    -7  -88 48  6  -87 24 22   .. .. ..  -85 37  9
    173  0  0   -88  8 53    8  0 21    10    55    -7  -88 49 26  -87 27 24   .. .. ..  -85 42 37
    172  0  0   -88 10 56    8  0 21    10    56    -7  -88 50 42  -87 30 16   .. .. ..  -85 47 45

    171  0  0   -88 12 51    8  0 21     9    57    -7  -88 51 54  -87 32 58   .. .. ..  -85 52 35
    170  0  0   -88 14 41    8  0 20     9    58    -7  -88 53  2  -87 35 32   .. .. ..  -85 57  8
    169  0  0   -88 16 25    8  0 20     9    59    -7  -88 54  7  -87 37 57   .. .. ..  -86  1 26
    168  0  0   -88 18  3    8  0 20     9    60    -7  -88 55  9  -87 40 15  -89 37 18  -86  5 30
    167  0  0   -88 19 37    8  0 20     9    61    -7  -88 56  7  -87 42 26   .. .. ..  -86  9 20

    166  0  0   -88 21  5    8  0 20     9    62    -7  -88 57  2  -87 44 30   .. .. ..  -86 12 58
    165  0  0   -88 22 30    8  0 20     9    63    -7  -88 57 55  -87 46 27   .. .. ..  -86 16 25
    164  0  0   -88 23 50    8  0 20     9    64    -7  -88 58 45  -87 48 19   .. .. ..  -86 19 40
    163  0  0   -88 25  6    8  0 20     9    65    -7  -88 59 33  -87 50  5   .. .. ..  -86 22 45
    162  0  0   -88 26 18    8  0 20     9    66    -7  -89  0 18  -87 51 45  -89 39  7  -86 25 41

    161  0  0   -88 27 27    8  0 20     9    67    -7  -89  1  1  -87 53 21   .. .. ..  -86 28 27
    160  0  0   -88 28 32    8  0 20     9    68    -7  -89  1 42  -87 54 51   .. .. ..  -86 31  5
    159  0  0   -88 29 34    8  0 20     9    69    -7  -89  2 21  -87 56 17   .. .. ..  -86 33 34
    158  0  0   -88 30 33    8  0 20     9    70    -7  -89  2 58  -87 57 39   .. .. ..  -86 35 56
    157  0  0   -88 31 29    8  0 20     9    71    -7  -89  3 33  -87 58 57   .. .. ..  -86 38 11

    156  0  0   -88 32 22    8  0 20     9    72    -7  -89  4  7  -88  0 11   .. .. ..  -86 40 18
    155  0  0   -88 33 12    8  0 20     9    73    -7  -89  4 38  -88  1 21   .. .. ..  -86 42 19
    154  0  0   -88 34  0    8  0 19     9    74    -7  -89  5  8  -88  2 27   .. .. ..  -86 44 14
    153  0  0   -88 34 46    8  0 19     9    75    -7  -89  5 37  -88  3 30   .. .. ..  -86 46  2
    152  0  0   -88 35 29    8  0 19     9    76    -7  -89  6  4  -88  4 29   .. .. ..  -86 47 45

    151  0  0   -88 36  9    8  0 19     9    77    -7  -89  6 30  -88  5 26   .. .. ..  -86 49 22
    150  0  0   -88 36 48    8  0 19     9    78    -7  -89  6 54  -88  6 19   .. .. ..  -86 50 53
    149  0  0   -88 37 24    8  0 19     9    79    -7  -89  7 17  -88  7  9   .. .. ..  -86 52 20
    148  0  0   -88 37 58    8  0 19     9    80    -7  -89  7 38  -88  7 56   .. .. ..  -86 53 41
    147  0  0   -88 38 30    8  0 19     9    81    -7  -89  7 59  -88  8 41  -89 41 44  -86 54 58

    146  0  0   -88 39  1    8  0 19     9    82    -6  -89  8 18  -88  9 23   .. .. ..  -86 56  9
    145  0  0   -88 39 29    8  0 19     9    83    -6  -89  8 36  -88 10  2   .. .. ..  -86 57 17
    144  0  0   -88 39 56    8  0 19     9    84    -6  -89  8 53  -88 10 39   .. .. ..  -86 58 20
    143  0  0   -88 40 20    8  0 19     9    85    -6  -89  9  8  -88 11 13   .. .. ..  -86 59 18
    142  0  0   -88 40 43    8  0 19     9    86    -6  -89  9 23  -88 11 45   .. .. ..  -87  0 13

    141  0  0   -88 41  5    8  0 19     9    87    -6  -89  9 36  -88 12 14   .. .. ..  -87  1  3
    140  0  0   -88 41 25    8  0 19     9    88    -6  -89  9 49  -88 12 42   .. .. ..  -87  1 50
    139  0  0   -88 41 43    8  0 19     9    89    -6  -89 10  0  -88 13  7   .. .. ..  -87  2 33
    138  0  0   -88 41 59    8  0 19     8    90    -6  -89 10 10  -88 13 29   .. .. ..  -87  3 11
    137  0  0   -88 42 14    8  0 19     8    91    -6  -89 10 20  -88 13 50   .. .. ..  -87  3 47

    136  0  0   -88 42 27    8  0 19     8    92    -6  -89 10 28  -88 14  8   .. .. ..  -87  4 18
    135  0  0   -88 42 39    8  0 19     8    93    -6  -89 10 36  -88 14 24   .. .. ..  -87  4 46
    134  0  0   -88 42 49    8  0 19     8    94    -6  -89 10 42  -88 14 39   .. .. ..  -87  5 10
    133  0  0   -88 42 58    8  0 19     8    95    -6  -89 10 48  -88 14 51   .. .. ..  -87  5 31
    132  0  0   -88 43  5    8  0 18     8    96    -6  -89 10 52  -88 15  1   .. .. ..  -87  5 48

    131  0  0   -88 43 11    8  0 18     8    97    -6  -89 10 56  -88 15  9   .. .. ..  -87  6  2
    130  0  0   -88 43 16    8  0 18     8    98    -6  -89 10 59  -88 15 15   .. .. ..  -87  6 13
    129  0  0   -88 43 18    8  0 18     8    99    -6  -89 11  0  -88 15 19   .. .. ..  -87  6 20
    128  0  0   -88 43 20    8  0 18     8   100    -6  -89 11  1  -88 15 21   .. .. ..  -87  6 23
    127  0  0   -88 43 20    8  0 18     8   101    -6  -89 11  1  -88 15 21   .. .. ..  -87  6 24

    126  0  0   -88 43 19    8  0 18     8   102    -6  -89 11  1  -88 15 19   .. .. ..  -87  6 20
    125  0  0   -88 43 16    8  0 18     8   103    -6  -89 10 59  -88 15 16   .. .. ..  -87  6 14
    124  0  0   -88 43 11    8  0 18     8   104    -6  -89 10 56  -88 15 10   .. .. ..  -87  6  4
    123  0  0   -88 43  6    8  0 18     8   105    -6  -89 10 52  -88 15  2   .. .. ..  -87  5 51
    122  0  0   -88 42 59    8  0 18     8   106    -6  -89 10 48  -88 14 52   .. .. ..  -87  5 34

    121  0  0   -88 42 50    8  0 18     8   107    -6  -89 10 42  -88 14 40   .. .. ..  -87  5 13
    120  0  0   -88 42 40    8  0 18     8   108    -6  -89 10 36  -88 14 26   .. .. ..  -87  4 50
    119  0  0   -88 42 28    8  0 18     8   109    -6  -89 10 29  -88 14 10   .. .. ..  -87  4 22
    118  0  0   -88 42 15    8  0 18     8   110    -6  -89 10 20  -88 13 52   .. .. ..  -87  3 51
    117  0  0   -88 42  0    8  0 18     8   111    -6  -89 10 11  -88 13 31   .. .. ..  -87  3 17

    116  0  0   -88 41 44    8  0 18     8   112    -6  -89 10  1  -88 13  9  -89 42 30  -87  2 39
    115  0  0   -88 41 26    8  0 18     8   113    -6  -89  9 49  -88 12 44   .. .. ..  -87  1 57
    114  0  0   -88 41  6    8  0 18     8   114    -6  -89  9 37  -88 12 17   .. .. ..  -87  1 11
    113  0  0   -88 40 45    8  0 18     8   115    -6  -89  9 23  -88 11 48   .. .. ..  -87  0 21
    112  0  0   -88 40 22    8  0 18     8   116    -6  -89  9  9  -88 11 16   .. .. ..  -86 59 27

    111  0  0   -88 39 58    8  0 18     8   117    -6  -89  8 53  -88 10 42   .. .. ..  -86 58 29
    110  0  0   -88 39 31    8  0 18     8   118    -6  -89  8 37  -88 10  6   .. .. ..  -86 57 26

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