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ASTROMETRIC UPDATE:
OCCULTATION BY (185) EUNIKE - 2015 APR 05

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2015 Mar 20, 03:08 UT

Event Rank : 100

(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.

Eunike Update Map


On 2015 Apr 05 UT, the 168 km diameter asteroid (185) Eunike will occult a 12.1 mag star in the constellation Hercules for observers along a path across the south-western corner of the South Island of New Zealand.

In the case of an occultation, the combined light of the asteroid and the star will drop by 1.2 mag to 12.8 mag (the magnitude of the asteroid) for at most 15.0 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 :
 Occultation of TYC 0961-01875-1 by 185 Eunike on 2015 Apr  5 
                  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
    166 19 31   -47  0  0   15 33 56    33    20   -37  167 28 44  165  9 52  167 49 26  164 48 53
    166 34 40   -46  0  0   15 34  2    34    20   -38  167 42 33  165 26 23  168  2 50  165  5 49
    166 48 49   -45  0  0   15 34  8    35    20   -38  167 55 26  165 41 50  168 15 20  165 21 39
    167  2  3   -44  0  0   15 34 14    36    20   -39  168  7 27  165 56 17  168 27  1  165 36 28
    167 14 24   -43  0  0   15 34 20    37    20   -39  168 18 40  166  9 47  168 37 53  165 50 20

    167 25 56   -42  0  0   15 34 26    38    20   -39  168 29  8  166 22 25  168 48  2  166  3 17
    167 36 42   -41  0  0   15 34 33    39    20   -40  168 38 52  166 34 13  168 57 28  166 15 24
Uncertainty in time = +/- 2 secs

Prediction of 2015 Mar 20.0


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