Graze logo


ASTROMETRIC UPDATE:
OCCULTATION BY (747) WINCHESTER - 2016 JAN 19

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2015 Dec 03, 10:56 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.

Winchester Update Map


On 2016 Jan 19 UT, the 202 km diameter asteroid (747) Winchester will occult a 11.8 mag star in the constellation Orion for observers along a path across western Queensland, western New South Wales, western Victoria and far eastern South Australia, passing over Broken Hill, Mildura and Mount Gambier.

In the case of an occultation, the combined light of the asteroid and the star will drop by only 0.4 mag to 11.0 mag (the magnitude of the asteroid) for at most 19.4 seconds. This event may be difficult to detect visually.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, 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 2UCAC 33344093 by 747 Winchester on 2016 Jan 19 
                  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
    140 26 38   -39  0  0   10 28 54    43    26    -5  141 40 15  139 12 29  142  0 47  138 51 37
    140 39 47   -38  0  0   10 29  1    44    26    -6  141 52 18  139 26 46  142 12 31  139  6 13
    140 52  8   -37  0  0   10 29  9    45    26    -7  142  3 36  139 40 11  142 23 31  139 19 56
    141  3 43   -36  0  0   10 29 17    46    26    -7  142 14 11  139 52 46  142 33 50  139 32 49
    141 14 34   -35  0  0   10 29 26    47    26    -8  142 24  6  140  4 36  142 43 29  139 44 55

    141 24 44   -34  0  0   10 29 34    48    26    -9  142 33 22  140 15 40  142 52 31  139 56 15
    141 34 15   -33  0  0   10 29 42    49    27    -9  142 42  2  140 26  3  143  0 56  140  6 52
    141 43  8   -32  0  0   10 29 51    50    27   -10  142 50  7  140 35 45  143  8 48  140 16 49
    141 51 26   -31  0  0   10 29 59    51    27   -11  142 57 38  140 44 50  143 16  7  140 26  6
    141 59  9   -30  0  0   10 30  8    52    28   -11  143  4 38  140 53 17  143 22 54  140 34 46

    142  6 19   -29  0  0   10 30 17    53    28   -12  143 11  7  141  1  9  143 29 12  140 42 51
    142 12 58   -28  0  0   10 30 26    54    28   -12  143 17  7  141  8 28  143 35  1  140 50 21
    142 19  7   -27  0  0   10 30 35    55    29   -13  143 22 39  141 15 15  143 40 23  140 57 18
    142 24 47   -26  0  0   10 30 44    56    29   -14  143 27 44  141 21 30  143 45 18  141  3 43
    142 29 59   -25  0  0   10 30 53    57    30   -14  143 32 22  141 27 16  143 49 47  141  9 39

    142 34 44   -24  0  0   10 31  2    58    30   -15  143 36 36  141 32 33  143 53 52  141 15  5
    142 39  3   -23  0  0   10 31 12    59    31   -16  143 40 26  141 37 23  143 57 33  141 20  3
    142 42 58   -22  0  0   10 31 21    59    32   -16  143 43 52  141 41 45  144  0 52  141 24 33
    142 46 27   -21  0  0   10 31 31    60    32   -17  143 46 55  141 45 42  144  3 48  141 28 38
    142 49 34   -20  0  0   10 31 40    61    33   -17  143 49 37  141 49 14  144  6 22  141 32 17

    142 52 18   -19  0  0   10 31 50    62    34   -18  143 51 57  141 52 21  144  8 36  141 35 31
    142 54 39   -18  0  0   10 32  0    63    35   -18  143 53 56  141 55  5  144 10 30  141 38 21
    142 56 39   -17  0  0   10 32 10    64    36   -19  143 55 36  141 57 25  144 12  3  141 40 47
    142 58 18   -16  0  0   10 32 20    65    37   -19  143 56 56  141 59 24  144 13 18  141 42 51
    142 59 37   -15  0  0   10 32 30    65    38   -20  143 57 57  142  1  1  144 14 14  141 44 33

    143  0 35   -14  0  0   10 32 40    66    40   -21  143 58 39  142  2 16  144 14 52  141 45 53
    143  1 15   -13  0  0   10 32 50    67    41   -21  143 59  3  142  3 11  144 15 11  141 46 52
    143  1 35   -12  0  0   10 33  0    68    43   -22  143 59  9  142  3 45  144 15 13  141 47 30
    143  1 36   -11  0  0   10 33 10    69    44   -22  143 58 57  142  3 59  144 14 58  141 47 48
    143  1 19   -10  0  0   10 33 20    69    46   -23  143 58 29  142  3 54  144 14 27  141 47 46

Uncertainty in time = +/- 3 secs

Prediction of 2015 Dec  3.0


Use these links for further information:
[Planetary Occultations] [Using the Predictions]
[Observing Details] [Timing Details] [Reporting Details] [Report Form]
[Asteroid Occultation Results]


[Site Map] [What's an Occultation?]
[Total Occultations] [Grazing Occultations] [Planetary Occultations] [Jovian Satellite Eclipses]
[Timing Occultations] [Reporting Observations] [Coming Events] [Software]
[About Us] [Publications] [Membership] [Links]

[Top of Page][Return to Home Page]