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ASTROMETRIC UPDATE:
OCCULTATION BY (2355) NEI MONGGOL - 2014 OCT 28

[Detailed Finder Charts]


Updated:   2014 Sep 19, 12:25 UT

Event Rank : 15

(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.

Nei Monggol Update Map


On 2014 Oct 28 UT, the 17 km diameter asteroid (2355) Nei Monggol will occult a 6.4 mag star in the constellation Aquarius for observers along a large uncertainty path across New Zealand, centred over Westport and Cape Reinga and passing near Dunedin and Christchurch.

In the case of an occultation, the combined light of the asteroid and the star will drop by 9.9 mag to 16.3 mag (the magnitude of the asteroid) for at most 1.8 seconds.

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: .

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 HIP 109375 by 2355 Nei Monggol on 2014 Oct 28 
                   Centre              Star  Star   Sun     Path Limit1           Path Limit2           Error Limit1          Error Limit2
  E. Longitude    Latitude      U.T.    Alt   Az    Alt                                                                                       
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "    o  '  "
                                                         Longitude  Latitude   Longitude  Latitude   Longitude  Latitude   Longitude  Latitude
    171 36 15   -47  8 45   11 22 13    46   286   -29  171 27  9  -47  7 51  171 45 23  -47  9 38  170  6 28  -46 59 27  173  8  4  -47 17  8
    171 35 45   -46  4 17   11 22 25    47   285   -30  171 26 50  -46  3 24  171 44 40  -46  5 10  170  7 52  -45 55  4  173  5 35  -46 12 37
    171 36 41   -45  0  6   11 22 38    47   284   -31  171 27 58  -44 59 14  171 45 26  -45  0 59  170 10 35  -44 50 59  173  4 41  -45  8 23
    171 39  0   -43 56 11   11 22 50    47   282   -32  171 30 26  -43 55 19  171 47 35  -43 57  3  170 14 32  -43 47  9  173  5 17  -44  4 23
    171 42 35   -42 52 29   11 23  2    47   281   -33  171 34 11  -42 51 38  171 51  1  -42 53 20  170 19 39  -42 43 34  173  7 18  -43  0 36

    171 47 23   -41 48 59   11 23 15    47   280   -34  171 39  8  -41 48  8  171 55 40  -41 49 50  170 25 52  -41 40 10  173 10 38  -41 57  0
    171 53 21   -40 45 40   11 23 27    47   279   -35  171 45 13  -40 44 49  172  1 30  -40 46 29  170 33  8  -40 36 58  173 15 14  -40 53 34
    172  0 25   -39 42 29   11 23 39    47   278   -36  171 52 25  -39 41 39  172  8 26  -39 43 18  170 41 26  -39 33 54  173 21  3  -39 50 17
    172  8 34   -38 39 25   11 23 51    47   276   -37  172  0 40  -38 38 36  172 16 28  -38 40 13  170 50 42  -38 30 58  173 28  1  -38 47  5
    172 17 44   -37 36 26   11 24  4    47   275   -38  172  9 57  -37 35 38  172 25 32  -37 37 14  171  0 55  -37 28  7  173 36  7  -37 43 59

    172 27 55   -36 33 31   11 24 16    47   274   -39  172 20 14  -36 32 44  172 35 37  -36 34 18  171 12  5  -36 25 21  173 45 17  -36 40 57
    172 39  5   -35 30 39   11 24 28    47   272   -40  172 31 29  -35 29 53  172 46 41  -35 31 25  171 24  8  -35 22 38  173 55 32  -35 37 55
    172 51 13   -34 27 47   11 24 41    47   271   -41  172 43 43  -34 27  1  172 58 44  -34 28 32  171 37  6  -34 19 55  174  6 50  -34 34 54
Uncertainty in time = +/- 11 secs

Prediction of 2014 Sep 19.0


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