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Updated: 2021 Dec 31, 01:53 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.
On 2022 Feb 25 UT, the 97 km diameter asteroid (162) Laurentia will occult a 12.1 mag star in the constellation Auriga for observers along a path across southern West Australia, southern South Australia, south-western Victoria and north-eastern Tasmania, passing over Adelaide, Horsham and Geelong.
In the case of an occultation, the combined light of the asteroid and the star will drop by 1.9 mag to 13.84 mag (the magnitude of the asteroid) for at most 8.9 seconds.
This update is based on, 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 UCAC4 597-015259 by 162 Laurentia on 2022 Feb 25
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
115 24 21 -28 44 0 11 12 28.0 32 357 -5 115 24 41 -27 55 4 115 24 4 -29 34 5 115 24 47 -27 42 33 115 24 0 -29 47 16 1.57
115 41 16 -28 46 6 11 12 30.6 32 357 -5 115 41 28 -27 57 7 115 41 8 -29 36 13 115 41 31 -27 44 35 115 41 6 -29 49 25 1.57
115 58 12 -28 48 16 11 12 33.2 32 357 -5 115 58 15 -27 59 14 115 58 12 -29 38 27 115 58 17 -27 46 42 115 58 13 -29 51 40 1.57
116 15 8 -28 50 31 11 12 35.8 32 357 -5 116 15 4 -28 1 26 116 15 18 -29 40 45 116 15 3 -27 48 53 116 15 21 -29 53 59 1.57
116 32 6 -28 52 51 11 12 38.5 32 356 -6 116 31 54 -28 3 43 116 32 25 -29 43 8 116 31 51 -27 51 8 116 32 30 -29 56 23 1.57
116 49 6 -28 55 15 11 12 41.1 32 356 -6 116 48 45 -28 6 3 116 49 33 -29 45 35 116 48 40 -27 53 28 116 49 41 -29 58 51 1.57
117 6 7 -28 57 43 11 12 43.7 32 356 -6 117 5 37 -28 8 29 117 6 43 -29 48 8 117 5 30 -27 55 53 117 6 54 -30 1 25 1.57
117 23 9 -29 0 17 11 12 46.3 32 355 -6 117 22 31 -28 10 58 117 23 54 -29 50 45 117 22 22 -27 58 22 117 24 7 -30 4 3 1.57
117 40 13 -29 2 55 11 12 48.9 32 355 -6 117 39 26 -28 13 33 117 41 7 -29 53 27 117 39 15 -28 0 55 117 41 23 -30 6 46 1.57
117 57 18 -29 5 38 11 12 51.5 32 355 -7 117 56 22 -28 16 12 117 58 22 -29 56 14 117 56 9 -28 3 33 117 58 40 -30 9 35 1.57
118 14 25 -29 8 25 11 12 54.1 31 354 -7 118 13 21 -28 18 55 118 15 39 -29 59 6 118 13 5 -28 6 16 118 15 59 -30 12 28 1.57
118 31 34 -29 11 17 11 12 56.8 31 354 -7 118 30 21 -28 21 43 118 32 57 -30 2 3 118 30 3 -28 9 3 118 33 20 -30 15 26 1.57
118 48 45 -29 14 15 11 12 59.4 31 354 -7 118 47 22 -28 24 36 118 50 17 -30 5 5 118 47 3 -28 11 54 118 50 43 -30 18 29 1.57
119 5 57 -29 17 17 11 13 2.0 31 354 -8 119 4 26 -28 27 33 119 7 40 -30 8 12 119 4 4 -28 14 51 119 8 8 -30 21 37 1.57
119 23 12 -29 20 23 11 13 4.6 31 353 -8 119 21 31 -28 30 36 119 25 4 -30 11 24 119 21 7 -28 17 52 119 25 35 -30 24 51 1.57
119 40 29 -29 23 35 11 13 7.2 31 353 -8 119 38 39 -28 33 43 119 42 31 -30 14 41 119 38 12 -28 20 57 119 43 5 -30 28 10 1.57
119 57 48 -29 26 52 11 13 9.8 31 353 -8 119 55 48 -28 36 54 120 0 0 -30 18 4 119 55 19 -28 24 8 120 0 37 -30 31 34 1.57
120 15 9 -29 30 14 11 13 12.4 31 352 -9 120 13 0 -28 40 11 120 17 31 -30 21 31 120 12 29 -28 27 23 120 18 11 -30 35 3 1.57
120 32 32 -29 33 41 11 13 15.1 31 352 -9 120 30 14 -28 43 32 120 35 5 -30 25 4 120 29 40 -28 30 43 120 35 48 -30 38 37 1.57
120 49 58 -29 37 13 11 13 17.7 31 352 -9 120 47 30 -28 46 59 120 52 42 -30 28 43 120 46 54 -28 34 8 120 53 27 -30 42 17 1.57
121 7 27 -29 40 50 11 13 20.3 31 351 -9 121 4 49 -28 50 30 121 10 21 -30 32 26 121 4 10 -28 37 39 121 11 9 -30 46 3 1.57
121 24 58 -29 44 33 11 13 22.9 31 351 -10 121 22 10 -28 54 7 121 28 3 -30 36 15 121 21 28 -28 41 14 121 28 54 -30 49 54 1.57
121 42 32 -29 48 21 11 13 25.5 30 351 -10 121 39 33 -28 57 48 121 45 48 -30 40 10 121 38 50 -28 44 54 121 46 42 -30 53 50 1.57
122 0 9 -29 52 14 11 13 28.1 30 351 -10 121 57 0 -29 1 35 122 3 36 -30 44 10 121 56 13 -28 48 39 122 4 33 -30 57 52 1.57
122 17 48 -29 56 12 11 13 30.7 30 350 -10 122 14 29 -29 5 27 122 21 27 -30 48 16 122 13 40 -28 52 29 122 22 27 -31 2 0 1.57
122 35 31 -30 0 16 11 13 33.4 30 350 -11 122 32 1 -29 9 24 122 39 21 -30 52 27 122 31 9 -28 56 25 122 40 25 -31 6 14 1.57
122 53 17 -30 4 26 11 13 36.0 30 350 -11 122 49 36 -29 13 27 122 57 19 -30 56 45 122 48 42 -29 0 25 122 58 26 -31 10 33 1.57
123 11 6 -30 8 41 11 13 38.6 30 349 -11 123 7 14 -29 17 35 123 15 20 -31 1 8 123 6 17 -29 4 31 123 16 30 -31 14 59 1.57
123 28 59 -30 13 2 11 13 41.2 30 349 -11 123 24 55 -29 21 48 123 33 25 -31 5 37 123 23 55 -29 8 43 123 34 38 -31 19 30 1.57
123 46 55 -30 17 29 11 13 43.8 30 349 -11 123 42 40 -29 26 7 123 51 34 -31 10 12 123 41 37 -29 13 0 123 52 50 -31 24 8 1.57
124 4 55 -30 22 1 11 13 46.4 29 348 -12 124 0 28 -29 30 31 124 9 46 -31 14 54 123 59 22 -29 17 22 124 11 6 -31 28 51 1.57
124 22 58 -30 26 39 11 13 49.1 29 348 -12 124 18 19 -29 35 1 124 28 3 -31 19 41 124 17 11 -29 21 50 124 29 26 -31 33 41 1.57
124 41 6 -30 31 24 11 13 51.7 29 348 -12 124 36 14 -29 39 37 124 46 23 -31 24 35 124 35 3 -29 26 24 124 47 50 -31 38 38 1.57
124 59 17 -30 36 14 11 13 54.3 29 348 -12 124 54 13 -29 44 19 125 4 48 -31 29 35 124 52 59 -29 31 3 125 6 19 -31 43 41 1.56
125 17 33 -30 41 11 11 13 56.9 29 347 -13 125 12 16 -29 49 6 125 23 17 -31 34 42 125 10 59 -29 35 49 125 24 52 -31 48 50 1.56
125 35 52 -30 46 14 11 13 59.5 29 347 -13 125 30 23 -29 54 0 125 41 51 -31 39 55 125 29 2 -29 40 40 125 43 30 -31 54 6 1.56
125 54 17 -30 51 23 11 14 2.1 29 347 -13 125 48 34 -29 58 59 126 0 30 -31 45 15 125 47 10 -29 45 37 126 2 12 -31 59 29 1.56
126 12 46 -30 56 39 11 14 4.7 29 346 -13 126 6 50 -30 4 5 126 19 14 -31 50 42 126 5 22 -29 50 40 126 21 0 -32 4 59 1.56
126 31 19 -31 2 1 11 14 7.4 28 346 -14 126 25 10 -30 9 17 126 38 2 -31 56 16 126 23 39 -29 55 50 126 39 53 -32 10 36 1.56
126 49 58 -31 7 30 11 14 10.0 28 346 -14 126 43 34 -30 14 35 126 56 56 -32 1 56 126 42 0 -30 1 5 126 58 51 -32 16 20 1.56
127 8 42 -31 13 6 11 14 12.6 28 346 -14 127 2 3 -30 20 0 127 15 56 -32 7 44 127 0 25 -30 6 27 127 17 55 -32 22 11 1.56
127 27 31 -31 18 48 11 14 15.2 28 345 -14 127 20 37 -30 25 31 127 35 1 -32 13 40 127 18 56 -30 11 56 127 37 5 -32 28 10 1.56
127 46 25 -31 24 38 11 14 17.8 28 345 -14 127 39 17 -30 31 9 127 54 12 -32 19 43 127 37 31 -30 17 31 127 56 20 -32 34 17 1.56
128 5 25 -31 30 35 11 14 20.4 28 345 -15 127 58 1 -30 36 54 128 13 29 -32 25 53 127 56 12 -30 23 13 128 15 42 -32 40 31 1.56
128 24 31 -31 36 39 11 14 23.0 27 344 -15 128 16 51 -30 42 46 128 32 53 -32 32 11 128 14 58 -30 29 2 128 35 10 -32 46 53 1.56
128 43 43 -31 42 51 11 14 25.7 27 344 -15 128 35 47 -30 48 45 128 52 23 -32 38 38 128 33 50 -30 34 58 128 54 45 -32 53 23 1.56
129 3 1 -31 49 11 11 14 28.3 27 344 -15 128 54 48 -30 54 51 129 11 59 -32 45 12 128 52 47 -30 41 0 129 14 27 -33 0 2 1.56
129 22 26 -31 55 38 11 14 30.9 27 343 -16 129 13 56 -31 1 4 129 31 43 -32 51 55 129 11 50 -30 47 10 129 34 16 -33 6 49 1.56
129 41 58 -32 2 13 11 14 33.5 27 343 -16 129 33 10 -31 7 25 129 51 34 -32 58 46 129 31 0 -30 53 28 129 54 13 -33 13 45 1.56
130 1 36 -32 8 57 11 14 36.1 26 343 -16 129 52 30 -31 13 54 130 11 33 -33 5 46 129 50 16 -30 59 53 130 14 17 -33 20 49 1.56
130 21 22 -32 15 48 11 14 38.7 26 343 -16 130 11 57 -31 20 30 130 31 40 -33 12 55 130 9 38 -31 6 26 130 34 29 -33 28 3 1.56
130 41 15 -32 22 49 11 14 41.3 26 342 -16 130 31 30 -31 27 15 130 51 54 -33 20 13 130 29 7 -31 13 6 130 54 50 -33 35 26 1.56
131 1 16 -32 29 58 11 14 44.0 26 342 -17 130 51 11 -31 34 7 131 12 17 -33 27 41 130 48 43 -31 19 55 131 15 19 -33 42 59 1.56
131 21 25 -32 37 16 11 14 46.6 26 342 -17 131 11 0 -31 41 8 131 32 49 -33 35 18 131 8 27 -31 26 52 131 35 58 -33 50 41 1.56
131 41 42 -32 44 43 11 14 49.2 25 341 -17 131 30 56 -31 48 18 131 53 31 -33 43 5 131 28 18 -31 33 57 131 56 46 -33 58 34 1.56
132 2 9 -32 52 19 11 14 51.8 25 341 -17 131 51 0 -31 55 36 132 14 21 -33 51 2 131 48 16 -31 41 11 132 17 43 -34 6 37 1.56
132 22 44 -33 0 6 11 14 54.4 25 341 -18 132 11 13 -32 3 3 132 35 22 -33 59 10 132 8 23 -31 48 34 132 38 51 -34 14 51 1.56
132 43 29 -33 8 2 11 14 57.0 25 340 -18 132 31 34 -32 10 40 132 56 33 -34 7 28 132 28 39 -31 56 5 133 0 9 -34 23 16 1.56
133 4 23 -33 16 8 11 14 59.6 25 340 -18 132 52 4 -32 18 26 133 17 55 -34 15 58 132 49 3 -32 3 47 133 21 39 -34 31 52 1.56
133 25 28 -33 24 25 11 15 2.3 24 340 -18 133 12 43 -32 26 22 133 39 28 -34 24 39 133 9 36 -32 11 37 133 43 20 -34 40 40 1.56
133 46 43 -33 32 53 11 15 4.9 24 339 -18 133 33 33 -32 34 28 134 1 13 -34 33 32 133 30 19 -32 19 38 134 5 13 -34 49 40 1.56
134 8 9 -33 41 32 11 15 7.5 24 339 -19 133 54 32 -32 42 44 134 23 10 -34 42 38 133 51 12 -32 27 49 134 27 19 -34 58 53 1.56
134 29 47 -33 50 23 11 15 10.1 24 339 -19 134 15 42 -32 51 10 134 45 20 -34 51 56 134 12 15 -32 36 10 134 49 38 -35 8 19 1.55
134 51 37 -33 59 26 11 15 12.7 23 339 -19 134 37 2 -32 59 48 135 7 43 -35 1 27 134 33 28 -32 44 41 135 12 11 -35 17 59 1.55
135 13 40 -34 8 41 11 15 15.3 23 338 -19 134 58 34 -33 8 37 135 30 21 -35 11 12 134 54 53 -32 53 24 135 34 58 -35 27 52 1.55
135 35 56 -34 18 9 11 15 17.9 23 338 -20 135 20 18 -33 17 38 135 53 13 -35 21 11 135 16 30 -33 2 19 135 58 1 -35 38 1 1.55
135 58 26 -34 27 50 11 15 20.6 23 338 -20 135 42 15 -33 26 51 136 16 21 -35 31 25 135 38 18 -33 11 25 136 21 19 -35 48 24 1.55
136 21 10 -34 37 45 11 15 23.2 22 337 -20 136 4 24 -33 36 16 136 39 45 -35 41 55 136 0 19 -33 20 43 136 44 55 -35 59 3 1.55
136 44 9 -34 47 54 11 15 25.8 22 337 -20 136 26 47 -33 45 54 137 3 27 -35 52 40 136 22 34 -33 30 14 137 8 49 -36 9 59 1.55
137 7 25 -34 58 18 11 15 28.4 22 337 -20 136 49 24 -33 55 46 137 27 26 -36 3 43 136 45 2 -33 39 58 137 33 1 -36 21 12 1.55
137 30 57 -35 8 58 11 15 31.0 21 336 -21 137 12 17 -34 5 52 137 51 45 -36 15 2 137 7 45 -33 49 56 137 57 33 -36 32 44 1.55
137 54 47 -35 19 54 11 15 33.6 21 336 -21 137 35 25 -34 16 12 138 16 24 -36 26 41 137 30 42 -34 0 7 138 22 26 -36 44 34 1.55
138 18 55 -35 31 7 11 15 36.3 21 336 -21 137 58 49 -34 26 47 138 41 24 -36 38 38 137 53 56 -34 10 34 138 47 41 -36 56 45 1.55
138 43 23 -35 42 37 11 15 38.9 20 335 -21 138 22 31 -34 37 38 139 6 47 -36 50 56 138 17 27 -34 21 16 139 13 20 -37 9 16 1.55
139 8 12 -35 54 27 11 15 41.5 20 335 -21 138 46 30 -34 48 46 139 32 35 -37 3 35 138 41 15 -34 32 13 139 39 25 -37 22 10 1.55
139 33 23 -36 6 36 11 15 44.1 20 335 -22 139 10 50 -35 0 10 139 58 48 -37 16 37 139 5 22 -34 43 28 140 5 56 -37 35 28 1.55
139 58 58 -36 19 5 11 15 46.7 19 334 -22 139 35 29 -35 11 53 140 25 29 -37 30 3 139 29 49 -34 54 59 140 32 56 -37 49 11 1.55
140 24 57 -36 31 56 11 15 49.3 19 334 -22 140 0 30 -35 23 55 140 52 39 -37 43 55 139 54 37 -35 6 50 141 0 27 -38 3 20 1.55
140 51 23 -36 45 11 11 15 51.9 19 334 -22 140 25 54 -35 36 16 141 20 20 -37 58 14 140 19 46 -35 18 59 141 28 31 -38 17 58 1.55
141 18 18 -36 58 49 11 15 54.6 18 333 -22 140 51 42 -35 48 59 141 48 36 -38 13 2 140 45 19 -35 31 29 141 57 11 -38 33 7 1.55
141 45 43 -37 12 54 11 15 57.2 18 333 -23 141 17 56 -36 2 4 142 17 29 -38 28 21 141 11 16 -35 44 20 142 26 30 -38 48 48 1.55
142 13 40 -37 27 26 11 15 59.8 18 333 -23 141 44 37 -36 15 32 142 47 1 -38 44 13 141 37 40 -35 57 33 142 56 32 -39 5 5 1.55
142 42 13 -37 42 28 11 16 2.4 17 332 -23 142 11 48 -36 29 25 143 17 17 -39 0 42 142 4 32 -36 11 11 143 27 19 -39 22 1 1.55
143 11 24 -37 58 2 11 16 5.0 17 332 -23 142 39 30 -36 43 44 143 48 21 -39 17 51 142 31 55 -36 25 13 143 58 57 -39 39 39 1.55
143 41 16 -38 14 9 11 16 7.6 16 331 -23 143 7 47 -36 58 32 144 20 17 -39 35 43 142 59 50 -36 39 43 144 31 32 -39 58 3 1.55
144 11 53 -38 30 55 11 16 10.2 16 331 -24 143 36 40 -37 13 50 144 53 11 -39 54 22 143 28 19 -36 54 42 145 5 8 -40 17 18 1.55
144 43 20 -38 48 20 11 16 12.9 16 331 -24 144 6 12 -37 29 41 145 27 9 -40 13 53 143 57 27 -37 10 12 145 39 54 -40 37 29 1.55
145 15 41 -39 6 30 11 16 15.5 15 330 -24 144 36 28 -37 46 7 146 2 19 -40 34 23 144 27 15 -37 26 15 146 15 59 -40 58 44 1.55
145 49 3 -39 25 28 11 16 18.1 15 330 -24 145 7 31 -38 3 11 146 38 52 -40 55 59 144 57 48 -37 42 55 146 53 34 -41 21 12 1.55
146 23 31 -39 45 20 11 16 20.7 14 329 -24 145 39 26 -38 20 57 147 16 57 -41 18 49 145 29 9 -38 0 14 147 32 52 -41 45 2 1.55
146 59 16 -40 6 13 11 16 23.3 13 329 -24 146 12 17 -38 39 29 147 56 52 -41 43 6 146 1 24 -38 18 15 148 14 12 -42 10 28 1.55
147 36 26 -40 28 13 11 16 25.9 13 329 -25 146 46 12 -38 58 50 148 38 54 -42 9 4 146 34 38 -38 37 4 148 57 56 -42 37 49 1.55
148 15 14 -40 51 31 11 16 28.5 12 328 -25 147 21 18 -39 19 8 149 23 28 -42 37 2 147 8 58 -38 56 44 149 44 37 -43 7 28 1.55
148 55 57 -41 16 19 11 16 31.2 12 328 -25 147 57 44 -39 40 29 150 11 11 -43 7 26 147 44 32 -39 17 23 150 34 58 -43 40 0 1.56
149 38 56 -41 42 52 11 16 33.8 11 327 -25 148 35 40 -40 3 1 151 2 51 -43 40 55 148 21 29 -39 39 7 151 30 8 -44 16 16 1.56
150 24 38 -42 11 32 11 16 36.4 10 326 -25 149 15 22 -40 26 54 151 59 46 -44 18 28 149 0 2 -40 2 6 152 31 57 -44 57 42 1.56
151 13 41 -42 42 47 11 16 39.0 10 326 -25 149 57 7 -40 52 22 153 4 5 -45 1 43 149 40 25 -40 26 29 153 43 51 -45 46 52 1.57
152 7 3 -43 17 19 11 16 41.6 9 325 -25 150 41 17 -41 19 42 154 20 0 -45 53 51 150 22 58 -40 52 33 155 13 46 -46 49 52 1.58
153 6 11 -43 56 17 11 16 44.2 8 324 -25 151 28 24 -41 49 17 155 58 21 -47 3 6 151 8 7 -41 20 35 157 35 36 -48 32 26 1.59
154 13 41 -44 41 33 11 16 46.8 7 324 -26 152 19 14 -42 21 41 159 31 54 -49 39 37 151 56 27 -41 51 2 ... .. .. .. .. .. 1.61
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