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Updated: 2020 Dec 31, 01:08 UT
Event Rank : 29
(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.
On 2021 Feb 09 UT, the 24 km diameter asteroid (3751) Kiang will occult a 6.4 mag star in the constellation Hydra for observers along a large uncertainty path across Northern Territory and South Australia, passing over Alice Springs and near Adelaide.
In the case of an occultation, the combined light of the asteroid and the star will drop by 10.99 mag to 17.39 mag (the magnitude of the asteroid) for at most 3.3 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
Additional details of this and other events are available at Steve Preston's website at http://www.asteroidoccultation.com/
EVENT DETAILS SUMMARY :Important Note regarding Accuracy:
The uncertainty interval in path widths given above (and shown as a 1-sigma uncertainty ellipse on the plot) refers to RMS deviation and is applied as a +/- range. In other words, a path uncertainty of 1.0 path widths means that the actual center of the asteroid's shadow path should fall within plus or minus 1 path width of the plotted path center. However path errors larger than 1 sigma have been observed so observers should be alert for primary occultations within plus or minus 3 sigma of the updated path.
Further, almost all asteroidal satellites discovered so far have been found within 10 diameters of the asteroid (since this distance is deep enough within the gravitational well to be stable over long timescales). Therefore, if monitoring for secondary events, observing out to about 10 path-widths either side of the predicted track remains worthwhile.
We therefore recommend that you monitor for events if your observing location is up to +/- 10 path-widths from the predicted track. If not monitoring for occultations by secondary bodies you should observe from locations within 3 sigma of the nominal path.
In terms of time, the predictions are now usually accurate to about +/- 0.3 minute so you should be most attentive during the predicted minute of the event. However if intending to catch a potential satellite occultation you should start observing at least 10 times the predicted central duration before the predicted closest approach time for your location, and continue for a similar period afterwards.
Occultation of HIP 66796 by 3751 Kiang on 2021 Feb 9
Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 Alt
E. Longitude Latitude U.T. Alt Az Alt Crn
o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' "
Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude
128 46 26 -10 16 57 16 20 17.4 39 116 -63 128 57 38 -10 16 26 128 35 12 -10 17 27 129 49 18 -10 13 38 127 42 15 -10 19 26 0.76
128 57 53 -10 39 46 16 20 21.5 39 116 -63 129 9 4 -10 39 13 128 46 40 -10 40 18 130 0 36 -10 36 19 127 53 52 -10 42 24 0.76
129 9 9 -11 2 28 16 20 25.6 39 116 -62 129 20 18 -11 1 54 128 57 58 -11 3 2 130 11 44 -10 58 52 128 5 17 -11 5 16 0.76
129 20 14 -11 25 4 16 20 29.7 40 115 -62 129 31 21 -11 24 28 129 9 4 -11 25 39 130 22 41 -11 21 19 128 16 31 -11 28 0 0.76
129 31 8 -11 47 33 16 20 33.8 40 115 -62 129 42 14 -11 46 56 129 19 59 -11 48 10 130 33 28 -11 43 41 128 27 33 -11 50 38 0.76
129 41 52 -12 9 56 16 20 37.9 40 115 -61 129 52 57 -12 9 17 129 30 44 -12 10 34 130 44 5 -12 5 56 128 38 24 -12 13 10 0.76
129 52 25 -12 32 14 16 20 41.9 41 115 -61 130 3 29 -12 31 33 129 41 19 -12 32 53 130 54 33 -12 28 5 128 49 5 -12 35 35 0.76
130 2 49 -12 54 25 16 20 46.0 41 114 -60 130 13 52 -12 53 43 129 51 44 -12 55 5 131 4 51 -12 50 9 128 59 35 -12 57 54 0.76
130 13 4 -13 16 31 16 20 50.1 41 114 -60 130 24 6 -13 15 48 130 2 0 -13 17 13 131 15 0 -13 12 8 129 9 56 -13 20 8 0.76
130 23 9 -13 38 31 16 20 54.2 42 114 -60 130 34 10 -13 37 47 130 12 6 -13 39 14 131 25 1 -13 34 1 129 20 7 -13 42 16 0.76
130 33 5 -14 0 26 16 20 58.3 42 113 -59 130 44 6 -13 59 40 130 22 3 -14 1 11 131 34 53 -13 55 49 129 30 8 -14 4 18 0.76
130 42 53 -14 22 16 16 21 2.4 42 113 -59 130 53 52 -14 21 29 130 31 51 -14 23 2 131 44 37 -14 17 33 129 40 0 -14 26 16 0.76
130 52 32 -14 44 1 16 21 6.4 42 113 -58 131 3 31 -14 43 13 130 41 31 -14 44 48 131 54 12 -14 39 11 129 49 43 -14 48 8 0.76
131 2 3 -15 5 42 16 21 10.5 43 113 -58 131 13 1 -15 4 52 130 51 2 -15 6 29 132 3 40 -15 0 45 129 59 17 -15 9 55 0.76
131 11 25 -15 27 17 16 21 14.6 43 112 -58 131 22 23 -15 26 27 131 0 25 -15 28 6 132 13 0 -15 22 14 130 8 43 -15 31 37 0.76
131 20 40 -15 48 48 16 21 18.7 43 112 -57 131 31 37 -15 47 57 131 9 40 -15 49 38 132 22 12 -15 43 39 130 18 0 -15 53 15 0.76
131 29 47 -16 10 15 16 21 22.8 44 112 -57 131 40 44 -16 9 22 131 18 48 -16 11 6 132 31 17 -16 5 0 130 27 10 -16 14 48 0.76
131 38 46 -16 31 37 16 21 26.9 44 111 -56 131 49 43 -16 30 44 131 27 47 -16 32 30 132 40 15 -16 26 16 130 36 11 -16 36 16 0.76
131 47 38 -16 52 56 16 21 30.9 44 111 -56 131 58 34 -16 52 1 131 36 39 -16 53 49 132 49 6 -16 47 29 130 45 5 -16 57 41 0.76
131 56 22 -17 14 10 16 21 35.0 44 111 -56 132 7 19 -17 13 14 131 45 24 -17 15 5 132 57 49 -17 8 38 130 53 50 -17 19 1 0.76
132 5 0 -17 35 21 16 21 39.1 45 110 -55 132 15 56 -17 34 24 131 54 2 -17 36 16 133 6 27 -17 29 42 131 2 29 -17 40 17 0.76
132 13 31 -17 56 27 16 21 43.2 45 110 -55 132 24 27 -17 55 29 132 2 33 -17 57 24 133 14 57 -17 50 44 131 11 0 -18 1 30 0.75
132 21 55 -18 17 30 16 21 47.3 45 110 -54 132 32 51 -18 16 31 132 10 57 -18 18 28 133 23 21 -18 11 41 131 19 24 -18 22 38 0.75
132 30 12 -18 38 30 16 21 51.4 45 109 -54 132 41 8 -18 37 30 132 19 14 -18 39 28 133 31 39 -18 32 36 131 27 41 -18 43 43 0.75
132 38 22 -18 59 26 16 21 55.4 46 109 -54 132 49 19 -18 58 25 132 27 24 -19 0 25 133 39 50 -18 53 26 131 35 52 -19 4 45 0.75
132 46 27 -19 20 18 16 21 59.5 46 109 -53 132 57 23 -19 19 17 132 35 28 -19 21 19 133 47 56 -19 14 14 131 43 55 -19 25 43 0.75
132 54 25 -19 41 8 16 22 3.6 46 108 -53 133 5 22 -19 40 5 132 43 26 -19 42 9 133 55 55 -19 34 59 131 51 52 -19 46 37 0.75
133 2 17 -20 1 54 16 22 7.7 46 108 -53 133 13 14 -20 0 51 132 51 18 -20 2 56 134 3 49 -19 55 40 131 59 43 -20 7 29 0.75
133 10 3 -20 22 37 16 22 11.8 47 108 -52 133 21 0 -20 21 33 132 59 4 -20 23 40 134 11 37 -20 16 18 132 7 27 -20 28 17 0.75
133 17 43 -20 43 18 16 22 15.9 47 107 -52 133 28 41 -20 42 13 133 6 43 -20 44 21 134 19 19 -20 36 54 132 15 5 -20 49 2 0.75
133 25 17 -21 3 55 16 22 19.9 47 107 -51 133 36 15 -21 2 49 133 14 17 -21 5 0 134 26 56 -20 57 27 132 22 37 -21 9 44 0.75
133 32 46 -21 24 30 16 22 24.0 47 107 -51 133 43 44 -21 23 23 133 21 45 -21 25 35 134 34 27 -21 17 57 132 30 2 -21 30 24 0.75
133 40 9 -21 45 2 16 22 28.1 48 106 -51 133 51 8 -21 43 54 133 29 8 -21 46 8 134 41 54 -21 38 24 132 37 22 -21 51 0 0.75
133 47 26 -22 5 31 16 22 32.2 48 106 -50 133 58 26 -22 4 23 133 36 24 -22 6 38 134 49 14 -21 58 49 132 44 37 -22 11 34 0.75
133 54 38 -22 25 58 16 22 36.3 48 106 -50 134 5 38 -22 24 49 133 43 36 -22 27 5 134 56 30 -22 19 11 132 51 45 -22 32 6 0.75
134 1 45 -22 46 22 16 22 40.4 48 105 -50 134 12 46 -22 45 12 133 50 42 -22 47 31 135 3 41 -22 39 31 132 58 48 -22 52 34 0.75
134 8 46 -23 6 44 16 22 44.4 48 105 -49 134 19 48 -23 5 33 133 57 42 -23 7 53 135 10 46 -22 59 49 133 5 45 -23 13 1 0.75
134 15 42 -23 27 4 16 22 48.5 49 104 -49 134 26 45 -23 25 52 134 4 38 -23 28 14 135 17 47 -23 20 5 133 12 37 -23 33 25 0.75
134 22 34 -23 47 21 16 22 52.6 49 104 -49 134 33 37 -23 46 9 134 11 28 -23 48 32 135 24 43 -23 40 18 133 19 24 -23 53 46 0.75
134 29 20 -24 7 36 16 22 56.7 49 104 -48 134 40 24 -24 6 23 134 18 14 -24 8 48 135 31 34 -24 0 29 133 26 5 -24 14 6 0.75
134 36 1 -24 27 50 16 23 0.8 49 103 -48 134 47 6 -24 26 36 134 24 54 -24 29 2 135 38 21 -24 20 38 133 32 41 -24 34 23 0.75
134 42 37 -24 48 1 16 23 4.9 49 103 -48 134 53 43 -24 46 46 134 31 29 -24 49 14 135 45 3 -24 40 45 133 39 12 -24 54 39 0.75
134 49 9 -25 8 10 16 23 8.9 50 102 -47 135 0 16 -25 6 55 134 38 0 -25 9 24 135 51 40 -25 0 51 133 45 37 -25 14 52 0.75
134 55 36 -25 28 17 16 23 13.0 50 102 -47 135 6 44 -25 27 2 134 44 25 -25 29 32 135 58 13 -25 20 54 133 51 58 -25 35 3 0.75
135 1 58 -25 48 23 16 23 17.1 50 102 -46 135 13 7 -25 47 7 134 50 46 -25 49 38 136 4 42 -25 40 56 133 58 14 -25 55 13 0.75
135 8 15 -26 8 27 16 23 21.2 50 101 -46 135 19 26 -26 7 10 134 57 3 -26 9 43 136 11 6 -26 0 56 134 4 25 -26 15 21 0.75
135 14 28 -26 28 29 16 23 25.3 50 101 -46 135 25 40 -26 27 12 135 3 15 -26 29 46 136 17 26 -26 20 55 134 10 31 -26 35 27 0.75
135 20 37 -26 48 30 16 23 29.4 50 100 -45 135 31 50 -26 47 11 135 9 22 -26 49 47 136 23 41 -26 40 52 134 16 32 -26 55 31 0.74
135 26 41 -27 8 29 16 23 33.4 51 100 -45 135 37 55 -27 7 10 135 15 24 -27 9 47 136 29 52 -27 0 47 134 22 29 -27 15 34 0.74
135 32 40 -27 28 27 16 23 37.5 51 99 -45 135 43 56 -27 27 7 135 21 23 -27 29 45 136 36 0 -27 20 41 134 28 21 -27 35 35 0.74
135 38 36 -27 48 23 16 23 41.6 51 99 -44 135 49 53 -27 47 2 135 27 16 -27 49 42 136 42 3 -27 40 34 134 34 8 -27 55 35 0.74
135 44 26 -28 8 18 16 23 45.7 51 99 -44 135 55 45 -28 6 57 135 33 6 -28 9 37 136 48 2 -28 0 25 134 39 51 -28 15 34 0.74
135 50 13 -28 28 11 16 23 49.8 51 98 -44 136 1 33 -28 26 50 135 38 51 -28 29 32 136 53 57 -28 20 15 134 45 29 -28 35 31 0.74
135 55 55 -28 48 3 16 23 53.9 51 98 -43 136 7 17 -28 46 41 135 44 32 -28 49 24 136 59 48 -28 40 4 134 51 2 -28 55 27 0.74
136 1 34 -29 7 55 16 23 57.9 51 97 -43 136 12 57 -29 6 32 135 50 9 -29 9 16 137 5 35 -28 59 51 134 56 31 -29 15 21 0.74
136 7 8 -29 27 45 16 24 2.0 52 97 -43 136 18 33 -29 26 21 135 55 41 -29 29 7 137 11 19 -29 19 38 135 1 56 -29 35 15 0.74
136 12 38 -29 47 34 16 24 6.1 52 96 -42 136 24 4 -29 46 10 136 1 9 -29 48 56 137 16 58 -29 39 24 135 7 16 -29 55 7 0.74
136 18 4 -30 7 22 16 24 10.2 52 96 -42 136 29 32 -30 5 57 136 6 33 -30 8 45 137 22 34 -29 59 8 135 12 32 -30 14 58 0.74
136 23 25 -30 27 9 16 24 14.3 52 95 -42 136 34 55 -30 25 43 136 11 53 -30 28 33 137 28 6 -30 18 52 135 17 44 -30 34 49 0.74
136 28 43 -30 46 55 16 24 18.4 52 95 -41 136 40 15 -30 45 29 136 17 9 -30 48 19 137 33 34 -30 38 35 135 22 51 -30 54 38 0.74
136 33 57 -31 6 40 16 24 22.4 52 95 -41 136 45 31 -31 5 14 136 22 21 -31 8 5 137 38 58 -30 58 16 135 27 54 -31 14 27 0.74
136 39 7 -31 26 24 16 24 26.5 52 94 -41 136 50 43 -31 24 57 136 27 29 -31 27 50 137 44 19 -31 17 58 135 32 53 -31 34 14 0.74
136 44 13 -31 46 8 16 24 30.6 52 94 -40 136 55 50 -31 44 41 136 32 33 -31 47 34 137 49 36 -31 37 38 135 37 47 -31 54 1 0.74
136 49 15 -32 5 51 16 24 34.7 53 93 -40 137 0 54 -32 4 23 136 37 33 -32 7 18 137 54 49 -31 57 18 135 42 38 -32 13 48 0.74
136 54 13 -32 25 34 16 24 38.8 53 93 -40 137 5 54 -32 24 5 136 42 29 -32 27 1 137 59 59 -32 16 57 135 47 24 -32 33 33 0.74
136 59 7 -32 45 15 16 24 42.9 53 92 -39 137 10 51 -32 43 46 136 47 21 -32 46 43 138 5 5 -32 36 36 135 52 6 -32 53 18 0.74
137 3 57 -33 4 57 16 24 46.9 53 92 -39 137 15 43 -33 3 27 136 52 9 -33 6 25 138 10 8 -32 56 14 135 56 43 -33 13 3 0.74
137 8 43 -33 24 38 16 24 51.0 53 91 -39 137 20 32 -33 23 7 136 56 53 -33 26 7 138 15 7 -33 15 52 136 1 17 -33 32 47 0.74
137 13 26 -33 44 18 16 24 55.1 53 91 -38 137 25 17 -33 42 47 137 1 33 -33 45 48 138 20 2 -33 35 29 136 5 46 -33 52 30 0.74
137 18 5 -34 3 58 16 24 59.2 53 90 -38 137 29 58 -34 2 27 137 6 10 -34 5 28 138 24 54 -33 55 6 136 10 11 -34 12 13 0.74
137 22 40 -34 23 38 16 25 3.3 53 90 -38 137 34 35 -34 22 6 137 10 42 -34 25 8 138 29 43 -34 14 43 136 14 33 -34 31 56 0.74
137 27 11 -34 43 17 16 25 7.4 53 89 -37 137 39 9 -34 41 45 137 15 11 -34 44 48 138 34 28 -34 34 19 136 18 50 -34 51 38 0.74
137 31 38 -35 2 56 16 25 11.4 53 89 -37 137 43 39 -35 1 23 137 19 36 -35 4 28 138 39 9 -34 53 55 136 23 2 -35 11 20 0.74
137 36 2 -35 22 35 16 25 15.5 53 88 -37 137 48 5 -35 21 2 137 23 57 -35 24 8 138 43 47 -35 13 31 136 27 11 -35 31 2 0.74
137 40 21 -35 42 14 16 25 19.6 53 88 -36 137 52 27 -35 40 40 137 28 14 -35 43 47 138 48 22 -35 33 7 136 31 16 -35 50 44 0.74
137 44 37 -36 1 53 16 25 23.7 53 87 -36 137 56 46 -36 0 19 137 32 27 -36 3 27 138 52 53 -35 52 43 136 35 16 -36 10 26 0.73
137 48 49 -36 21 32 16 25 27.8 54 87 -36 138 1 1 -36 19 57 137 36 36 -36 23 6 138 57 20 -36 12 19 136 39 12 -36 30 8 0.73
137 52 58 -36 41 11 16 25 31.9 54 86 -35 138 5 12 -36 39 35 137 40 42 -36 42 45 139 1 44 -36 31 55 136 43 4 -36 49 49 0.73
137 57 2 -37 0 50 16 25 35.9 54 86 -35 138 9 19 -36 59 14 137 44 43 -37 2 25 139 6 5 -36 51 31 136 46 52 -37 9 31 0.73
138 1 3 -37 20 29 16 25 40.0 54 85 -35 138 13 23 -37 18 52 137 48 41 -37 22 4 139 10 22 -37 11 7 136 50 36 -37 29 13 0.73
138 5 0 -37 40 8 16 25 44.1 54 85 -34 138 17 23 -37 38 31 137 52 35 -37 41 44 139 14 36 -37 30 43 136 54 16 -37 48 55 0.73
138 8 53 -37 59 47 16 25 48.2 54 84 -34 138 21 19 -37 58 10 137 56 25 -38 1 24 139 18 46 -37 50 19 136 57 51 -38 8 37 0.73
138 12 42 -38 19 27 16 25 52.3 54 84 -34 138 25 11 -38 17 49 138 0 11 -38 21 4 139 22 53 -38 9 56 137 1 22 -38 28 20 0.73
138 16 28 -38 39 7 16 25 56.4 54 83 -33 138 29 0 -38 37 28 138 3 53 -38 40 44 139 26 57 -38 29 33 137 4 49 -38 48 2 0.73
138 20 9 -38 58 47 16 26 0.4 54 83 -33 138 32 45 -38 57 8 138 7 31 -39 0 25 139 30 56 -38 49 11 137 8 12 -39 7 45 0.73
138 23 47 -39 18 28 16 26 4.5 54 82 -33 138 36 26 -39 16 48 138 11 6 -39 20 6 139 34 53 -39 8 49 137 11 30 -39 27 29 0.73
138 27 20 -39 38 9 16 26 8.6 54 82 -32 138 40 3 -39 36 29 138 14 36 -39 39 48 139 38 46 -39 28 27 137 14 44 -39 47 13 0.73
138 30 50 -39 57 51 16 26 12.7 54 81 -32 138 43 36 -39 56 10 138 18 2 -39 59 30 139 42 35 -39 48 6 137 17 54 -40 6 57 0.73
138 34 16 -40 17 33 16 26 16.8 54 81 -32 138 47 5 -40 15 52 138 21 24 -40 19 13 139 46 21 -40 7 45 137 20 59 -40 26 42 0.73
138 37 38 -40 37 16 16 26 20.9 54 80 -32 138 50 31 -40 35 34 138 24 42 -40 38 56 139 50 3 -40 27 25 137 24 0 -40 46 28 0.73
138 40 56 -40 57 0 16 26 24.9 54 80 -31 138 53 52 -40 55 17 138 27 56 -40 58 40 139 53 42 -40 47 6 137 26 56 -41 6 14 0.73
138 44 9 -41 16 44 16 26 29.0 54 79 -31 138 57 10 -41 15 1 138 31 6 -41 18 25 139 57 17 -41 6 47 137 29 48 -41 26 1 0.73
138 47 19 -41 36 29 16 26 33.1 54 79 -31 139 0 24 -41 34 46 138 34 12 -41 38 10 140 0 48 -41 26 30 137 32 35 -41 45 48 0.73
138 50 25 -41 56 14 16 26 37.2 54 78 -30 139 3 33 -41 54 31 138 37 14 -41 57 57 140 4 16 -41 46 13 137 35 18 -42 5 36 0.73
138 53 26 -42 16 1 16 26 41.3 54 78 -30 139 6 38 -42 14 17 138 40 11 -42 17 44 140 7 40 -42 5 56 137 37 56 -42 25 26 0.73
138 56 23 -42 35 49 16 26 45.4 54 77 -30 139 9 40 -42 34 4 138 43 4 -42 37 32 140 11 0 -42 25 41 137 40 29 -42 45 16 0.73
138 59 16 -42 55 37 16 26 49.4 54 77 -29 139 12 37 -42 53 52 138 45 53 -42 57 21 140 14 17 -42 45 27 137 42 58 -43 5 7 0.73
139 2 5 -43 15 26 16 26 53.5 54 76 -29 139 15 30 -43 13 41 138 48 37 -43 17 11 140 17 29 -43 5 14 137 45 21 -43 24 59 0.73
139 4 49 -43 35 17 16 26 57.6 54 76 -29 139 18 19 -43 33 31 138 51 17 -43 37 2 140 20 38 -43 25 1 137 47 40 -43 44 52 0.73
139 7 29 -43 55 9 16 27 1.7 54 75 -28 139 21 3 -43 53 22 138 53 52 -43 56 54 140 23 43 -43 44 50 137 49 54 -44 4 46 0.73
139 10 4 -44 15 1 16 27 5.8 54 75 -28 139 23 43 -44 13 15 138 56 23 -44 16 47 140 26 45 -44 4 40 137 52 3 -44 24 41 0.73
139 12 35 -44 34 55 16 27 9.9 54 74 -28 139 26 19 -44 33 8 138 58 49 -44 36 41 140 29 42 -44 24 32 137 54 7 -44 44 37 0.73
139 15 1 -44 54 50 16 27 13.9 53 74 -27 139 28 50 -44 53 3 139 1 11 -44 56 37 140 32 35 -44 44 24 137 56 5 -45 4 35 0.73
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