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ASTROMETRIC UPDATE:
OCCULTATION BY (690) WRATISLAVIA - 2015 Aug 07

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2015 JUN 12, 22:41 UT

Event Rank : 99

(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.

Wratislavia Update Map


On 2015 Aug 07 UT, the 158 km diameter asteroid (690) Wratislavia will occult a 12.5 mag star in the constellation Pisces for observers along a path passing near North Island New Zealand.

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.8 mag to 12.5 mag (the magnitude of the asteroid) for at most 28.5 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: .

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
    175 22 31   -55  0  0   15  7 57    16     9   -40  176 39 39  174  5 19  177 16 39  173 28 12
    175 43 45   -54  0  0   15  8  3    17     8   -41  176 58 58  174 28 27  177 35  4  173 52 17
    176  4 16   -53  0  0   15  8  9    18     8   -41  177 17 42  174 50 46  177 52 56  174 15 27
    176 24  7   -52  0  0   15  8 15    19     8   -41  177 35 52  175 12 19  178 10 18  174 37 49
    176 43 21   -51  0  0   15  8 22    20     7   -42  177 53 32  175 33  9  178 27 12  174 59 25

    177  2  2   -50  0  0   15  8 30    21     7   -42  178 10 43  175 53 19  178 43 41  175 20 19
    177 20 12   -49  0  0   15  8 37    22     7   -42  178 27 28  176 12 54  178 59 45  175 40 35
    177 37 52   -48  0  0   15  8 45    23     6   -43  178 43 49  176 31 55  179 15 28  176  0 14
    177 55  6   -47  0  0   15  8 53    24     6   -43  178 59 47  176 50 25  179 30 50  176 19 21
    178 11 55   -46  0  0   15  9  2    25     6   -43  179 15 25  177  8 25  179 45 54  176 37 56

    178 28 21   -45  0  0   15  9 11    26     6   -43  179 30 43  177 25 59 -179 59 20  176 56  3
    178 44 26   -44  0  0   15  9 20    27     5   -43  179 45 44  177 43  8 -179 44 50  177 13 43
    179  0 11   -43  0  0   15  9 30    28     5   -44 -179 59 32  177 59 54 -179 30 35  177 30 59
    179 15 37   -42  0  0   15  9 40    29     5   -44 -179 45  3  178 16 19 -179 16 34  177 47 51
    179 30 47   -41  0  0   15  9 50    30     4   -44 -179 30 49  178 32 23 -179  2 45  178  4 22

    179 45 40   -40  0  0   15 10  0    31     4   -44 -179 16 47  178 48  9 -178 49  9  178 20 33
   -179 59 41   -39  0  0   15 10 11    32     4   -44 -179  2 57  179  3 38 -178 35 42  178 36 25
   -179 45 15   -38  0  0   15 10 23    33     4   -44 -178 49 18  179 18 50 -178 22 26  178 52  1
   -179 31  2   -37  0  0   15 10 34    34     3   -44 -178 35 49  179 33 48 -178  9 18  179  7 20
   -179 17  0   -36  0  0   15 10 46    35     3   -44 -178 22 30  179 48 32 -177 56 19  179 22 25

   -179  3  9   -35  0  0   15 10 58    36     3   -44 -178  9 19 -179 56 56 -177 43 27  179 37 16
   -178 49 27   -34  0  0   15 11 11    37     2   -44 -177 56 15 -179 42 36 -177 30 42  179 51 54
   -178 35 54   -33  0  0   15 11 23    38     2   -44 -177 43 18 -179 28 27 -177 18  2 -179 53 39
   -178 22 29   -32  0  0   15 11 37    39     2   -44 -177 30 28 -179 14 27 -177  5 28 -179 39 23
   -178  9 11   -31  0  0   15 11 50    40     2   -44 -177 17 42 -179  0 37 -176 52 58 -179 25 17

   -177 56  0   -30  0  0   15 12  4    41     1   -44 -177  5  2 -178 46 54 -176 40 32 -179 11 19
   -177 42 54   -29  0  0   15 12 18    42     1   -43 -176 52 25 -178 33 19 -176 28  9 -178 57 30
   -177 29 52   -28  0  0   15 12 32    43     1   -43 -176 39 51 -178 19 50 -176 15 49 -178 43 47
   -177 16 55   -27  0  0   15 12 46    44     0   -43 -176 27 20 -178  6 26 -176  3 31 -178 30 11
   -177  4  2   -26  0  0   15 13  1    45   360   -43 -176 14 52 -177 53  8 -175 51 14 -178 16 40

Uncertainty in time = +/- 8 secs

Prediction of 2015 Jun 12.0

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