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ASTROMETRIC UPDATE:
OCCULTATION BY (618) ELFRIEDE - 2016 JAN 12

[Detailed Finder Charts]


Updated:   2015 Dec 03, 10:34 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.

Elfriede Update Map


On 2016 Jan 12 UT, the 131 km diameter asteroid (618) Elfriede will occult a 11.0 mag star in the constellation Taurus for observers along a path across Tasmania during late evening twilight.

In the case of an occultation, the combined light of the asteroid and the star will drop by 2.4 mag to 13.3 mag (the magnitude of the asteroid) for at most 9.7 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, 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 :
 Occultation of TYC 1312-02201-1 by 618 Elfriede on 2016 Jan 12 
                  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
    151 50 56   -45  0  0   10 43 37    25    26   -10  154 51 30  148 35 14  156 13 52  146 54 27
    150  2 30   -44  0  0   10 43 50    25    28   -10  153  8  1  146 39 46  154 32 14  144 54 29
    148  6 56   -43  0  0   10 44  3    25    30    -9  151 18 45  144 35  4  152 45 20  142 43 48
    146  2 51   -42  0  0   10 44 18    25    32    -9  149 22 47  142 18 54  150 52 21  140 19 27
    145  0  0   -41 31 20   10 44 25    25    33    -8  -39 57 49  -43 11 36  -39 14 57  -44  2 39

    144  0  0   -41  5  1   10 44 32    25    34    -8  -39 32 33  -42 44  0  -38 50  7  -43 34 19
    143  0  0   -40 39 44   10 44 39    25    35    -8  -39  8 15  -42 17 31  -38 26 14  -43  7  8
    142  0  0   -40 15 28   10 44 46    25    36    -7  -38 44 54  -41 52  7  -38  3 17  -42 41  6
    141  0  0   -39 52 12   10 44 53    25    37    -7  -38 22 31  -41 27 48  -37 41 15  -42 16 12
    140  0  0   -39 29 57   10 45  0    25    38    -7  -38  1  5  -41  4 34  -37 20 10  -41 52 24

    139  0  0   -39  8 42   10 45  7    25    39    -6  -37 40 35  -40 42 23  -37  0  0  -41 29 43
    138  0  0   -38 48 26   10 45 13    24    40    -6  -37 21  2  -40 21 16  -36 40 45  -41  8  6
    137  0  0   -38 29  9   10 45 20    24    41    -5  -37  2 26  -40  1 11  -36 22 25  -40 47 34
    136  0  0   -38 10 51   10 45 26    24    42    -5  -36 44 45  -39 42  8  -36  5  1  -40 28  6
Uncertainty in time = +/- 3 secs

Prediction of 2015 Dec  3.0


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