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ASTROMETRIC UPDATE:
OCCULTATION BY (1315) BRONISLAWA - 2009 Nov 05

[Edwin Goffin's Prediction + Finder Charts]

[Detailed Finder Charts]


Updated:   2009 SEP 22, 03:05 UT

Event Rank : 70

(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.

Bronislawa Update Map


On 2009 Nov 05 UT, the 61 km diameter asteroid (1315) Bronislawa will occult a 11.5 mag star in the constellation Orion for observers along a path passing just north of Whangarei in New Zealand in morning twilight.

In the case of an occultation, the combined light of the asteroid and the star will drop by 4.1 mag to 15.6 mag (the magnitude of the asteroid) for at most 9.3 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 :
                   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
    158 10 22   -44  0  0   16 55 46    26   353   -11  157 10  5  159 11 34  155 30 47  160 56 41
    159 32 12   -43  0  0   16 55 27    27   352   -11  158 31 39  160 33 45  156 51 58  162 19 34
    160 56 35   -42  0  0   16 55  6    27   350   -11  159 55 37  161 58 37  158 15 20  163 45 24
    162 23 44   -41  0  0   16 54 45    28   349   -11  161 22 12  163 26 24  159 41  7  165 14 25
    163 53 56   -40  0  0   16 54 23    29   347   -10  162 51 40  164 57 24  161  9 32  166 46 59

    165 27 28   -39  0  0   16 53 59    30   345   -10  164 24 18  166 31 57  162 40 51  168 23 29
    167  4 45   -38  0  0   16 53 34    30   343    -9  166  0 28  168 10 28  164 15 22  170  4 24
    168 46 13   -37  0  0   16 53  8    31   342    -8  167 40 34  169 53 26  165 53 27  171 50 20
    170 32 25   -36  0  0   16 52 41    31   340    -8  169 25  6  171 41 30  167 35 33  173 41 59
    172 24  3   -35  0  0   16 52 12    32   338    -7  171 14 41  173 35 24  169 22  9  175 40 21

    174 21 58   -34  0  0   16 51 41    32   335    -6  173 10  6  175 36  7  171 13 56  177 46 40
    176 27 19   -33  0  0   16 51  9    32   333    -5  175 12 20  177 45  0  173 11 41 -179 57 22
                                                         Latitude   Latitude   Latitude   Latitude
    177  0  0   -32 44 59   16 51  0    32   333    -4  -32 10  9  -33 20 29  -31 12 59  -34 21 41
    178  0  0   -32 18  7   16 50 45    32   332    -4  -31 43 35  -32 53 17  -30 46 54  -33 53 54
    179  0  0   -31 52  8   16 50 29    32   330    -3  -31 17 53  -32 26 59  -30 21 39  -33 27  3

    180  0  0   -31 27  1   16 50 14    32   329    -3  -30 53  3  -32  1 35  -29 57 15  -33  1  7
   -179  0  0   -31  2 47   16 49 59    32   328    -2  -30 29  4  -31 37  4  -29 33 41  -32 36  6
   -178  0  0   -30 39 25   16 49 44    32   327    -2  -30  5 57  -31 13 26  -29 10 57  -32 12  0
   -177  0  0   -30 16 55   16 49 28    32   326    -1  -29 43 41  -30 50 41  -28 49  4  -31 48 48
   -176  0  0   -29 55 16   16 49 14    32   325     0  -29 22 17  -30 28 49  -28 28  0  -31 26 31


Uncertainty in time = +/- 9 secs

Prediction of 2009 Sep 17.0

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