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Updated: 2021 Oct 21, 17:03 UT
Event Rank : 80
(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 Dec 03 UT, the 67 km diameter asteroid (3548) Eurybates will occult a 10.8 mag star in the constellation Taurus for observers along a slightly uncertain path across New Zealand, passing over Westport and southern Victoria, passing near Melbourne.
In the case of an occultation, the combined light of the asteroid and the star will drop by 5.6 mag to 16.43 mag (the magnitude of the asteroid) for at most 4.5 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 TYC 1246-00385-1 by 3548 Eurybates on 2021 Dec 3
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
-179 30 24 -44 37 28 14 8 9.1 8 313 -16 -177 22 31 -46 9 3 178 54 38 -43 22 4 ... .. .. .. .. .. 177 13 57 -41 54 17 1.79
179 35 29 -44 18 36 14 8 10.8 9 313 -17 -178 31 47 -45 43 5 178 8 17 -43 6 52 -174 0 18 -48 34 22 176 33 49 -41 42 1 1.80
178 45 3 -44 1 30 14 8 12.5 10 314 -17 -179 33 30 -45 20 39 177 24 14 -42 52 46 -176 1 39 -47 44 0 175 55 9 -41 30 28 1.81
177 57 38 -43 45 49 14 8 14.2 10 314 -18 179 30 15 -45 0 48 176 42 10 -42 39 38 -177 30 42 -47 8 42 175 17 48 -41 19 33 1.82
177 12 41 -43 31 19 14 8 15.9 11 315 -18 178 38 9 -44 42 54 176 1 48 -42 27 18 -178 44 44 -46 40 26 174 41 36 -41 9 13 1.83
176 29 51 -43 17 50 14 8 17.6 11 315 -19 177 49 22 -44 26 36 175 22 57 -42 15 43 -179 49 38 -46 16 28 174 6 27 -40 59 23 1.84
175 48 49 -43 5 14 14 8 19.3 12 316 -19 177 3 18 -44 11 35 174 45 25 -42 4 46 179 11 48 -45 55 31 173 32 16 -40 50 2 1.84
175 9 23 -42 53 23 14 8 21.0 12 316 -20 176 19 30 -43 57 40 174 9 4 -41 54 24 178 17 57 -45 36 48 172 58 57 -40 41 7 1.84
174 31 20 -42 42 14 14 8 22.7 13 317 -20 175 37 40 -43 44 42 173 33 47 -41 44 34 177 27 46 -45 19 50 172 26 26 -40 32 35 1.85
173 54 31 -42 31 41 14 8 24.4 13 317 -20 174 57 30 -43 32 33 172 59 28 -41 35 13 176 40 33 -45 4 19 171 54 39 -40 24 26 1.85
173 18 49 -42 21 42 14 8 26.1 14 318 -21 174 18 50 -43 21 8 172 26 1 -41 26 18 175 55 49 -44 49 59 171 23 32 -40 16 38 1.85
172 44 7 -42 12 12 14 8 27.8 14 318 -21 173 41 27 -43 10 21 171 53 23 -41 17 47 175 13 9 -44 36 39 170 53 3 -40 9 9 1.86
172 10 20 -42 3 10 14 8 29.5 14 319 -21 173 5 15 -43 0 9 171 21 30 -41 9 39 174 32 18 -44 24 13 170 23 10 -40 1 58 1.86
171 37 24 -41 54 33 14 8 31.2 15 319 -22 172 30 6 -42 50 29 170 50 18 -41 1 52 173 53 0 -44 12 33 169 53 49 -39 55 4 1.86
171 5 13 -41 46 19 14 8 32.9 15 320 -22 171 55 54 -42 41 18 170 19 44 -40 54 25 173 15 5 -44 1 34 169 24 59 -39 48 26 1.86
170 33 44 -41 38 28 14 8 34.6 16 320 -22 171 22 35 -42 32 33 169 49 45 -40 47 16 172 38 24 -43 51 12 168 56 38 -39 42 3 1.86
170 2 55 -41 30 56 14 8 36.3 16 320 -22 170 50 3 -42 24 12 169 20 19 -40 40 25 172 2 48 -43 41 23 168 28 43 -39 35 55 1.86
169 32 42 -41 23 44 14 8 38.0 16 321 -23 170 18 15 -42 16 14 168 51 24 -40 33 49 171 28 13 -43 32 4 168 1 15 -39 30 1 1.86
169 3 3 -41 16 49 14 8 39.7 17 321 -23 169 47 7 -42 8 37 168 22 59 -40 27 30 170 54 31 -43 23 13 167 34 10 -39 24 19 1.86
168 33 55 -41 10 11 14 8 41.4 17 321 -23 169 16 38 -42 1 20 167 55 0 -40 21 24 170 21 39 -43 14 47 167 7 28 -39 18 50 1.87
168 5 18 -41 3 49 14 8 43.1 17 322 -23 168 46 43 -41 54 21 167 27 27 -40 15 33 169 49 32 -43 6 45 166 41 8 -39 13 33 1.87
167 37 8 -40 57 42 14 8 44.8 17 322 -24 168 17 20 -41 47 39 167 0 18 -40 9 54 169 18 8 -42 59 4 166 15 8 -39 8 27 1.87
167 9 24 -40 51 49 14 8 46.5 18 323 -24 167 48 29 -41 41 14 166 33 32 -40 4 29 168 47 22 -42 51 44 165 49 28 -39 3 32 1.87
166 42 5 -40 46 9 14 8 48.2 18 323 -24 167 20 5 -41 35 4 166 7 8 -39 59 15 168 17 12 -42 44 43 165 24 6 -38 58 47 1.87
166 15 9 -40 40 42 14 8 49.9 18 323 -24 166 52 9 -41 29 8 165 41 4 -39 54 13 167 47 35 -42 37 59 164 59 2 -38 54 12 1.87
165 48 35 -40 35 28 14 8 51.6 19 324 -25 166 24 38 -41 23 27 165 15 20 -39 49 21 167 18 30 -42 31 33 164 34 14 -38 49 47 1.87
165 22 23 -40 30 25 14 8 53.3 19 324 -25 165 57 31 -41 17 58 164 49 54 -39 44 41 166 49 54 -42 25 22 164 9 43 -38 45 32 1.87
164 56 30 -40 25 34 14 8 55.0 19 324 -25 165 30 46 -41 12 43 164 24 46 -39 40 10 166 21 45 -42 19 27 163 45 27 -38 41 25 1.87
152 39 35 -38 58 59 14 9 51.1 25 335 -29 152 58 4 -39 39 20 152 22 2 -38 19 36 153 24 39 -40 35 23 151 59 44 -37 27 56 1.88
152 19 32 -38 58 2 14 9 52.8 25 335 -29 152 37 45 -39 38 17 152 2 15 -38 18 44 153 3 54 -40 34 11 151 40 16 -37 27 10 1.88
151 59 34 -38 57 9 14 9 54.5 25 336 -29 152 17 30 -39 37 19 151 42 32 -38 17 56 152 43 15 -40 33 4 151 20 52 -37 26 29 1.88
151 39 41 -38 56 21 14 9 56.2 25 336 -29 151 57 21 -39 36 25 151 22 54 -38 17 13 152 22 42 -40 32 2 151 1 33 -37 25 51 1.88
151 19 53 -38 55 37 14 9 57.9 25 336 -29 151 37 17 -39 35 36 151 3 21 -38 16 34 152 2 15 -40 31 5 150 42 18 -37 25 18 1.88
151 0 10 -38 54 58 14 9 59.6 26 337 -29 151 17 18 -39 34 52 150 43 52 -38 15 59 151 41 53 -40 30 13 150 23 8 -37 24 49 1.88
150 40 31 -38 54 23 14 10 1.3 26 337 -29 150 57 24 -39 34 13 150 24 28 -38 15 28 151 21 36 -40 29 27 150 4 1 -37 24 23 1.88
150 20 57 -38 53 53 14 10 3.0 26 337 -29 150 37 35 -39 33 38 150 5 8 -38 15 2 151 1 25 -40 28 45 149 44 58 -37 24 2 1.88
150 1 27 -38 53 27 14 10 4.7 26 337 -29 150 17 50 -39 33 7 149 45 51 -38 14 40 150 41 18 -40 28 8 149 25 59 -37 23 45 1.88
149 42 1 -38 53 5 14 10 6.4 26 338 -29 149 58 10 -39 32 41 149 26 39 -38 14 22 150 21 16 -40 27 35 149 7 3 -37 23 32 1.88
149 22 39 -38 52 47 14 10 8.1 26 338 -29 149 38 33 -39 32 20 149 7 30 -38 14 8 150 1 19 -40 27 7 148 48 11 -37 23 22 1.88
149 3 21 -38 52 34 14 10 9.8 26 338 -29 149 19 1 -39 32 2 148 48 25 -38 13 58 149 41 27 -40 26 44 148 29 22 -37 23 17 1.88
148 44 6 -38 52 25 14 10 11.5 26 339 -29 148 59 33 -39 31 49 148 29 23 -38 13 52 149 21 38 -40 26 26 148 10 37 -37 23 15 1.88
148 24 55 -38 52 19 14 10 13.2 26 339 -29 148 40 9 -39 31 41 148 10 25 -38 13 50 149 1 54 -40 26 12 147 51 54 -37 23 17 1.88
148 5 48 -38 52 18 14 10 14.9 26 339 -29 148 20 48 -39 31 36 147 51 30 -38 13 52 148 42 14 -40 26 2 147 33 15 -37 23 22 1.88
147 46 44 -38 52 21 14 10 16.6 27 340 -29 148 1 31 -39 31 36 147 32 39 -38 13 58 148 22 38 -40 25 57 147 14 39 -37 23 32 1.88
147 27 43 -38 52 28 14 10 18.3 27 340 -29 147 42 17 -39 31 40 147 13 50 -38 14 8 148 3 5 -40 25 56 146 56 6 -37 23 45 1.88
147 8 46 -38 52 39 14 10 20.0 27 340 -29 147 23 7 -39 31 48 146 55 5 -38 14 21 147 43 36 -40 26 0 146 37 35 -37 24 1 1.88
146 49 51 -38 52 54 14 10 21.7 27 341 -29 147 4 0 -39 32 0 146 36 22 -38 14 39 147 24 11 -40 26 8 146 19 7 -37 24 22 1.88
146 31 0 -38 53 12 14 10 23.4 27 341 -29 146 44 56 -39 32 16 146 17 42 -38 15 0 147 4 49 -40 26 20 146 0 42 -37 24 45 1.88
146 12 11 -38 53 35 14 10 25.1 27 341 -29 146 25 55 -39 32 36 145 59 4 -38 15 24 146 45 30 -40 26 36 145 42 19 -37 25 13 1.88
145 53 25 -38 54 1 14 10 26.8 27 341 -29 146 6 57 -39 33 0 145 40 30 -38 15 53 146 26 14 -40 26 56 145 23 58 -37 25 44 1.88
145 34 41 -38 54 31 14 10 28.5 27 342 -29 145 48 1 -39 33 28 145 21 57 -38 16 25 146 7 1 -40 27 21 145 5 40 -37 26 18 1.88
145 16 0 -38 55 5 14 10 30.2 27 342 -29 145 29 8 -39 33 59 145 3 28 -38 17 1 145 47 51 -40 27 50 144 47 24 -37 26 56 1.88
144 57 22 -38 55 43 14 10 31.9 27 342 -29 145 10 18 -39 34 35 144 45 0 -38 17 40 145 28 44 -40 28 22 144 29 10 -37 27 38 1.88
144 38 46 -38 56 24 14 10 33.6 27 343 -29 144 51 30 -39 35 15 144 26 35 -38 18 23 145 9 40 -40 28 59 144 10 58 -37 28 23 1.88
144 20 12 -38 57 9 14 10 35.3 27 343 -29 144 32 45 -39 35 58 144 8 11 -38 19 10 144 50 38 -40 29 40 143 52 49 -37 29 11 1.88
144 1 40 -38 57 58 14 10 37.0 27 343 -29 144 14 2 -39 36 45 143 49 50 -38 20 0 144 31 39 -40 30 25 143 34 41 -37 30 3 1.88
143 43 10 -38 58 50 14 10 38.7 27 344 -29 143 55 21 -39 37 37 143 31 31 -38 20 54 144 12 42 -40 31 14 143 16 35 -37 30 58 1.88
143 24 42 -38 59 47 14 10 40.4 27 344 -29 143 36 42 -39 38 31 143 13 13 -38 21 51 143 53 47 -40 32 7 142 58 30 -37 31 57 1.88
143 6 16 -39 0 46 14 10 42.1 28 344 -29 143 18 5 -39 39 30 142 54 58 -38 22 52 143 34 54 -40 33 4 142 40 28 -37 32 59 1.88
142 47 52 -39 1 50 14 10 43.8 28 345 -29 142 59 30 -39 40 32 142 36 44 -38 23 56 143 16 3 -40 34 5 142 22 27 -37 34 4 1.88
142 29 30 -39 2 57 14 10 45.5 28 345 -29 142 40 57 -39 41 38 142 18 31 -38 25 4 142 57 15 -40 35 9 142 4 27 -37 35 13 1.88
142 11 9 -39 4 7 14 10 47.2 28 345 -29 142 22 26 -39 42 48 142 0 21 -38 26 15 142 38 28 -40 36 18 141 46 29 -37 36 25 1.88
141 52 49 -39 5 22 14 10 48.9 28 345 -29 142 3 56 -39 44 2 141 42 11 -38 27 30 142 19 43 -40 37 30 141 28 32 -37 37 41 1.88
141 34 32 -39 6 39 14 10 50.6 28 346 -29 141 45 28 -39 45 19 141 24 3 -38 28 48 142 0 59 -40 38 46 141 10 37 -37 39 0 1.88
141 16 15 -39 8 1 14 10 52.3 28 346 -29 141 27 1 -39 46 40 141 5 57 -38 30 10 141 42 18 -40 40 7 140 52 43 -37 40 22 1.88
140 58 0 -39 9 26 14 10 54.0 28 346 -29 141 8 35 -39 48 4 140 47 51 -38 31 35 141 23 37 -40 41 31 140 34 50 -37 41 47 1.88
140 39 46 -39 10 54 14 10 55.7 28 347 -29 140 50 11 -39 49 33 140 29 47 -38 33 4 141 4 58 -40 42 59 140 16 58 -37 43 16 1.88
140 21 33 -39 12 26 14 10 57.4 28 347 -29 140 31 48 -39 51 5 140 11 44 -38 34 36 140 46 21 -40 44 30 139 59 7 -37 44 48 1.88
140 3 21 -39 14 1 14 10 59.1 28 347 -29 140 13 26 -39 52 40 139 53 42 -38 36 11 140 27 44 -40 46 6 139 41 16 -37 46 24 1.88
139 45 11 -39 15 41 14 11 0.8 28 348 -29 139 55 5 -39 54 19 139 35 40 -38 37 50 140 9 9 -40 47 45 139 23 27 -37 48 2 1.88
139 27 1 -39 17 23 14 11 2.5 28 348 -28 139 36 45 -39 56 2 139 17 40 -38 39 32 139 50 34 -40 49 28 139 5 39 -37 49 44 1.88
139 8 52 -39 19 9 14 11 4.2 28 348 -28 139 18 26 -39 57 49 138 59 40 -38 41 18 139 32 1 -40 51 15 138 47 51 -37 51 30 1.88
138 50 43 -39 20 59 14 11 5.9 28 349 -28 139 0 8 -39 59 39 138 41 41 -38 43 7 139 13 29 -40 53 6 138 30 4 -37 53 18 1.88
138 32 36 -39 22 52 14 11 7.6 28 349 -28 138 41 51 -40 1 32 138 23 43 -38 45 0 138 54 57 -40 55 0 138 12 18 -37 55 10 1.88
138 14 29 -39 24 49 14 11 9.3 28 349 -28 138 23 34 -40 3 30 138 5 45 -38 46 56 138 36 26 -40 56 59 137 54 32 -37 57 5 1.88
137 56 22 -39 26 49 14 11 11.0 28 349 -28 138 5 17 -40 5 31 137 47 48 -38 48 55 138 17 55 -40 59 1 137 36 47 -37 59 4 1.88
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