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Updated: 2020 SEP 14, 03:43 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 2020 Nov 12 UT, the 113.9 km diameter asteroid (1093) Freda will occult a 11.2 mag star in the constellation Grus for observers along a path across the South Island of New Zealand at Invercargill and possibly Te Anau.
In the case of an occultation, the combined light of the asteroid and the star will drop by 2.60 mag to 13.70 mag (the magnitude of the asteroid) for at most 4.9 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, 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, inparticular 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 259-192386 by 1093 Freda on 2020 Nov 12
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
170 13 51 -48 48 31 12 22 38.9 39 254 -23 169 4 19 -49 3 50 171 23 52 -48 32 16 168 26 50 -49 11 46 172 2 3 -48 23 2 -1.23
170 3 24 -48 32 30 12 22 40.3 39 254 -24 168 54 14 -48 47 43 171 13 5 -48 16 21 168 16 56 -48 55 35 171 51 5 -48 7 11 -1.23
169 53 13 -48 16 26 12 22 41.6 39 253 -24 168 44 23 -48 31 33 171 2 34 -48 0 23 168 7 17 -48 39 22 171 40 23 -47 51 17 -1.23
169 43 18 -48 0 19 12 22 43.0 39 253 -24 168 34 48 -48 15 20 170 52 19 -47 44 23 167 57 53 -48 23 6 171 29 57 -47 35 20 -1.23
169 33 37 -47 44 10 12 22 44.4 39 253 -25 168 25 27 -47 59 5 170 42 19 -47 28 19 167 48 43 -48 6 48 171 19 47 -47 19 20 -1.23
169 24 12 -47 27 58 12 22 45.8 39 253 -25 168 16 21 -47 42 48 170 32 34 -47 12 13 167 39 48 -47 50 28 171 9 51 -47 3 17 -1.23
169 15 1 -47 11 43 12 22 47.2 39 253 -25 168 7 30 -47 26 28 170 23 4 -46 56 4 167 31 7 -47 34 5 171 0 11 -46 47 11 -1.23
169 6 4 -46 55 26 12 22 48.6 39 253 -25 167 58 52 -47 10 5 170 13 48 -46 39 52 167 22 39 -47 17 40 170 50 46 -46 31 2 -1.23
168 57 21 -46 39 6 12 22 50.0 39 253 -26 167 50 28 -46 53 41 170 4 47 -46 23 37 167 14 26 -47 1 13 170 41 35 -46 14 50 -1.23
168 48 52 -46 22 44 12 22 51.3 39 253 -26 167 42 18 -46 37 14 169 56 0 -46 7 20 167 6 26 -46 44 44 170 32 38 -45 58 35 -1.23
168 40 37 -46 6 19 12 22 52.7 39 252 -26 167 34 21 -46 20 44 169 47 27 -45 51 0 166 58 38 -46 28 12 170 23 56 -45 42 18 -1.23
168 32 36 -45 49 52 12 22 54.1 39 252 -26 167 26 37 -46 4 13 169 39 8 -45 34 37 166 51 4 -46 11 38 170 15 27 -45 25 58 -1.23
168 24 47 -45 33 22 12 22 55.5 39 252 -27 167 19 6 -45 47 39 169 31 2 -45 18 11 166 43 43 -45 55 2 170 7 12 -45 9 35 -1.23
168 17 12 -45 16 50 12 22 56.9 39 252 -27 167 11 48 -45 31 3 169 23 10 -45 1 43 166 36 34 -45 38 23 169 59 10 -44 53 9 -1.23
168 9 49 -45 0 15 12 22 58.3 39 252 -27 167 4 42 -45 14 24 169 15 30 -44 45 13 166 29 38 -45 21 43 169 51 22 -44 36 40 -1.23
168 2 39 -44 43 38 12 22 59.6 39 252 -27 166 57 48 -44 57 43 169 8 4 -44 28 39 166 22 53 -45 5 0 169 43 46 -44 20 9 -1.23
167 55 41 -44 26 58 12 23 1.0 39 251 -28 166 51 7 -44 41 0 169 0 50 -44 12 3 166 16 21 -44 48 15 169 36 24 -44 3 35 -1.23
167 48 55 -44 10 16 12 23 2.4 39 251 -28 166 44 38 -44 24 14 168 53 48 -43 55 25 166 10 1 -44 31 28 169 29 14 -43 46 58 -1.23
167 42 22 -43 53 31 12 23 3.8 39 251 -28 166 38 20 -44 7 27 168 46 59 -43 38 43 166 3 52 -44 14 38 169 22 17 -43 30 19 -1.23
167 36 0 -43 36 44 12 23 5.2 39 251 -29 166 32 14 -43 50 37 168 40 22 -43 21 59 165 57 54 -43 57 47 169 15 31 -43 13 37 -1.23
167 29 50 -43 19 55 12 23 6.6 39 251 -29 166 26 19 -43 33 44 168 33 57 -43 5 13 165 52 8 -43 40 53 169 8 58 -42 56 52 -1.23
167 23 52 -43 3 3 12 23 7.9 39 251 -29 166 20 36 -43 16 50 168 27 44 -42 48 24 165 46 33 -43 23 57 169 2 37 -42 40 5 -1.23
167 18 5 -42 46 8 12 23 9.3 39 250 -29 166 15 4 -42 59 53 168 21 43 -42 31 32 165 41 8 -43 6 59 168 56 28 -42 23 14 -1.23
167 12 29 -42 29 12 12 23 10.7 39 250 -30 166 9 42 -42 42 54 168 15 53 -42 14 38 165 35 55 -42 49 58 168 50 31 -42 6 21 -1.23
167 7 4 -42 12 12 12 23 12.1 39 250 -30 166 4 32 -42 25 52 168 10 14 -41 57 41 165 30 52 -42 32 56 168 44 45 -41 49 26 -1.23
167 1 51 -41 55 11 12 23 13.5 39 250 -30 165 59 32 -42 8 48 168 4 47 -41 40 41 165 26 0 -42 15 51 168 39 10 -41 32 27 -1.23
166 56 48 -41 38 6 12 23 14.9 39 250 -31 165 54 42 -41 51 42 167 59 30 -41 23 39 165 21 18 -41 58 44 168 33 46 -41 15 26 -1.23
166 51 55 -41 20 59 12 23 16.2 39 250 -31 165 50 3 -41 34 34 167 54 25 -41 6 34 165 16 46 -41 41 34 168 28 34 -40 58 22 -1.23
166 47 14 -41 3 50 12 23 17.6 39 249 -31 165 45 35 -41 17 23 167 49 30 -40 49 26 165 12 25 -41 24 22 168 23 33 -40 41 16 -1.23
166 42 42 -40 46 38 12 23 19.0 39 249 -31 165 41 16 -41 0 9 167 44 47 -40 32 16 165 8 13 -41 7 8 168 18 42 -40 24 6 -1.23
166 38 21 -40 29 24 12 23 20.4 39 249 -32 165 37 8 -40 42 54 167 40 13 -40 15 3 165 4 12 -40 49 52 168 14 2 -40 6 54 -1.23
166 34 10 -40 12 7 12 23 21.8 39 249 -32 165 33 9 -40 25 36 167 35 50 -39 57 47 165 0 20 -40 32 33 168 9 33 -39 49 39 -1.23
166 30 10 -39 54 48 12 23 23.2 38 249 -32 165 29 21 -40 8 15 167 31 38 -39 40 29 164 56 38 -40 15 12 168 5 14 -39 32 21 -1.24
166 26 19 -39 37 26 12 23 24.5 38 248 -33 165 25 41 -39 50 52 167 27 36 -39 23 8 164 53 5 -39 57 49 168 1 6 -39 15 0 -1.24
166 22 38 -39 20 1 12 23 25.9 38 248 -33 165 22 12 -39 33 27 167 23 44 -39 5 44 164 49 42 -39 40 23 167 57 8 -38 57 37 -1.24
166 19 7 -39 2 33 12 23 27.3 38 248 -33 165 18 52 -39 15 59 167 20 2 -38 48 17 164 46 29 -39 22 55 167 53 20 -38 40 10 -1.24
166 15 46 -38 45 3 12 23 28.7 38 248 -33 165 15 42 -38 58 28 167 16 29 -38 30 47 164 43 24 -39 5 24 167 49 42 -38 22 41 -1.24
166 12 34 -38 27 31 12 23 30.1 38 248 -34 165 12 41 -38 40 55 167 13 7 -38 13 15 164 40 29 -38 47 51 167 46 14 -38 5 8 -1.24
166 9 31 -38 9 55 12 23 31.5 38 248 -34 165 9 49 -38 23 19 167 9 55 -37 55 39 164 37 43 -38 30 15 167 42 57 -37 47 33 -1.24
166 6 39 -37 52 17 12 23 32.8 38 247 -34 165 7 6 -38 5 41 167 6 52 -37 38 1 164 35 6 -38 12 37 167 39 49 -37 29 55 -1.24
166 3 55 -37 34 36 12 23 34.2 38 247 -35 165 4 32 -37 48 0 167 3 59 -37 20 20 164 32 38 -37 54 56 167 36 51 -37 12 13 -1.24
166 1 21 -37 16 52 12 23 35.6 38 247 -35 165 2 8 -37 30 17 167 1 15 -37 2 35 164 30 18 -37 37 12 167 34 2 -36 54 29 -1.24
165 58 56 -36 59 5 12 23 37.0 38 247 -35 164 59 52 -37 12 30 166 58 41 -36 44 48 164 28 8 -37 19 26 167 31 23 -36 36 41 -1.24
165 56 40 -36 41 15 12 23 38.4 38 247 -35 164 57 46 -36 54 41 166 56 17 -36 26 58 164 26 6 -37 1 37 167 28 54 -36 18 50 -1.24
165 54 34 -36 23 22 12 23 39.8 37 246 -36 164 55 48 -36 36 49 166 54 2 -36 9 4 164 24 13 -36 43 46 167 26 35 -36 0 56 -1.24
165 52 36 -36 5 27 12 23 41.1 37 246 -36 164 53 59 -36 18 54 166 51 56 -35 51 7 164 22 29 -36 25 51 167 24 24 -35 42 59 -1.24
165 50 47 -35 47 28 12 23 42.5 37 246 -36 164 52 18 -36 0 57 166 49 59 -35 33 7 164 20 53 -36 7 54 167 22 24 -35 24 58 -1.24
165 49 8 -35 29 26 12 23 43.9 37 246 -37 164 50 47 -35 42 56 166 48 12 -35 15 4 164 19 26 -35 49 54 167 20 32 -35 6 54 -1.24
165 47 37 -35 11 21 12 23 45.3 37 246 -37 164 49 24 -35 24 52 166 46 34 -34 56 58 164 18 8 -35 31 51 167 18 50 -34 48 47 -1.24
165 46 15 -34 53 13 12 23 46.7 37 245 -37 164 48 9 -35 6 46 166 45 5 -34 38 48 164 16 58 -35 13 45 167 17 18 -34 30 36 -1.24
165 45 2 -34 35 2 12 23 48.1 37 245 -37 164 47 4 -34 48 36 166 43 45 -34 20 35 164 15 56 -34 55 36 167 15 54 -34 12 22 -1.24
165 43 58 -34 16 47 12 23 49.4 37 245 -38 164 46 6 -34 30 23 166 42 34 -34 2 18 164 15 2 -34 37 25 167 14 40 -33 54 4 -1.24
165 43 2 -33 58 29 12 23 50.8 37 245 -38 164 45 18 -34 12 7 166 41 32 -33 43 58 164 14 17 -34 19 10 167 13 35 -33 35 43 -1.24
165 42 16 -33 40 7 12 23 52.2 36 244 -38 164 44 37 -33 53 48 166 40 40 -33 25 34 164 13 41 -34 0 51 167 12 39 -33 17 17 -1.24
165 41 38 -33 21 42 12 23 53.6 36 244 -39 164 44 5 -33 35 25 166 39 56 -33 7 7 164 13 12 -33 42 30 167 11 53 -32 58 49 -1.24
165 41 8 -33 3 14 12 23 55.0 36 244 -39 164 43 42 -33 16 59 166 39 21 -32 48 35 164 12 52 -33 24 5 167 11 15 -32 40 16 -1.24
165 40 48 -32 44 42 12 23 56.4 36 244 -39 164 43 27 -32 58 30 166 38 56 -32 30 1 164 12 40 -33 5 37 167 10 47 -32 21 39 -1.24
165 40 36 -32 26 6 12 23 57.7 36 244 -40 164 43 21 -32 39 57 166 38 39 -32 11 22 164 12 37 -32 47 6 167 10 28 -32 2 59 -1.24
165 40 33 -32 7 27 12 23 59.1 36 243 -40 164 43 22 -32 21 21 166 38 31 -31 52 39 164 12 42 -32 28 31 167 10 18 -31 44 14 -1.24
165 40 39 -31 48 44 12 24 0.5 36 243 -40 164 43 33 -32 2 41 166 38 33 -31 33 52 164 12 55 -32 9 53 167 10 17 -31 25 25 1.24
165 40 53 -31 29 57 12 24 1.9 36 243 -41 164 43 51 -31 43 57 166 38 43 -31 15 2 164 13 16 -31 51 11 167 10 26 -31 6 32 1.24
165 41 16 -31 11 6 12 24 3.3 35 243 -41 164 44 19 -31 25 10 166 39 3 -30 56 7 164 13 46 -31 32 25 167 10 44 -30 47 35 1.24
165 41 48 -30 52 10 12 24 4.7 35 243 -41 164 44 54 -31 6 18 166 39 31 -30 37 7 164 14 23 -31 13 36 167 11 11 -30 28 34 1.24
165 42 28 -30 33 11 12 24 6.0 35 242 -41 164 45 38 -30 47 23 166 40 9 -30 18 4 164 15 9 -30 54 43 167 11 47 -30 9 28 1.24
165 43 18 -30 14 8 12 24 7.4 35 242 -42 164 46 31 -30 28 24 166 40 55 -29 58 56 164 16 4 -30 35 45 167 12 32 -29 50 17 1.24
165 44 16 -29 55 0 12 24 8.8 35 242 -42 164 47 32 -30 9 20 166 41 51 -29 39 43 164 17 7 -30 16 44 167 13 27 -29 31 2 1.24
165 45 23 -29 35 48 12 24 10.2 35 242 -42 164 48 41 -29 50 13 166 42 56 -29 20 26 164 18 18 -29 57 39 167 14 32 -29 11 42 1.24
165 46 39 -29 16 31 12 24 11.6 34 242 -43 164 49 59 -29 31 1 166 44 11 -29 1 5 164 19 37 -29 38 30 167 15 45 -28 52 17 1.24
165 48 3 -28 57 10 12 24 13.0 34 241 -43 164 51 26 -29 11 45 166 45 34 -28 41 38 164 21 5 -29 19 16 167 17 9 -28 32 47 1.24
165 49 37 -28 37 44 12 24 14.3 34 241 -43 164 53 1 -28 52 24 166 47 7 -28 22 6 164 22 42 -28 59 58 167 18 42 -28 13 12 1.25
165 51 20 -28 18 14 12 24 15.7 34 241 -44 164 54 45 -28 32 59 166 48 50 -28 2 30 164 24 27 -28 40 36 167 20 24 -27 53 32 1.25
165 53 12 -27 58 38 12 24 17.1 34 241 -44 164 56 38 -28 13 29 166 50 42 -27 42 48 164 26 20 -28 21 9 167 22 16 -27 33 47 1.25
165 55 13 -27 38 57 12 24 18.5 33 241 -44 164 58 40 -27 53 55 166 52 43 -27 23 1 164 28 22 -28 1 37 167 24 18 -27 13 56 1.25
165 57 24 -27 19 12 12 24 19.9 33 240 -45 165 0 50 -27 34 15 166 54 54 -27 3 8 164 30 33 -27 42 1 167 26 30 -26 53 59 1.25
165 59 44 -26 59 21 12 24 21.3 33 240 -45 165 3 10 -27 14 31 166 57 15 -26 43 10 164 32 53 -27 22 20 167 28 52 -26 33 57 1.25
166 2 13 -26 39 24 12 24 22.6 33 240 -45 165 5 38 -26 54 41 166 59 46 -26 23 6 164 35 21 -27 2 34 167 31 24 -26 13 49 1.25
166 4 52 -26 19 22 12 24 24.0 33 240 -46 165 8 16 -26 34 46 167 2 27 -26 2 56 164 37 59 -26 42 42 167 34 6 -25 53 35 1.25
166 7 40 -25 59 14 12 24 25.4 32 240 -46 165 11 3 -26 14 46 167 5 18 -25 42 41 164 40 45 -26 22 46 167 36 59 -25 33 14 1.25
166 10 38 -25 39 1 12 24 26.8 32 240 -46 165 13 59 -25 54 40 167 8 19 -25 22 19 164 43 41 -26 2 44 167 40 2 -25 12 47 1.25
166 13 46 -25 18 41 12 24 28.2 32 239 -47 165 17 5 -25 34 28 167 11 30 -25 1 50 164 46 45 -25 42 36 167 43 16 -24 52 14 1.25
166 17 4 -24 58 16 12 24 29.6 32 239 -47 165 20 20 -25 14 11 167 14 52 -24 41 16 164 49 59 -25 22 23 167 46 40 -24 31 34 1.25
166 20 32 -24 37 44 12 24 30.9 32 239 -47 165 23 45 -24 53 47 167 18 24 -24 20 34 164 53 23 -25 2 4 167 50 16 -24 10 47 1.25
166 24 11 -24 17 5 12 24 32.3 31 239 -48 165 27 19 -24 33 18 167 22 8 -23 59 46 164 56 56 -24 41 39 167 54 2 -23 49 53 1.25
166 28 0 -23 56 20 12 24 33.7 31 239 -48 165 31 4 -24 12 42 167 26 2 -23 38 50 165 0 39 -24 21 8 167 58 0 -23 28 51 1.25
166 31 59 -23 35 28 12 24 35.1 31 238 -48 165 34 59 -23 51 59 167 30 8 -23 17 47 165 4 31 -24 0 30 168 2 10 -23 7 42 1.25
166 36 10 -23 14 28 12 24 36.5 31 238 -49 165 39 4 -23 31 10 167 34 25 -22 56 37 165 8 34 -23 39 46 168 6 31 -22 46 25 1.25
166 40 31 -22 53 22 12 24 37.9 30 238 -49 165 43 19 -23 10 14 167 38 53 -22 35 19 165 12 46 -23 18 55 168 11 4 -22 25 0 1.25
166 45 3 -22 32 8 12 24 39.3 30 238 -50 165 47 45 -22 49 11 167 43 34 -22 13 53 165 17 9 -22 57 58 168 15 50 -22 3 27 1.25
166 49 47 -22 10 46 12 24 40.6 30 238 -50 165 52 22 -22 28 1 167 48 26 -21 52 18 165 21 43 -22 36 53 168 20 48 -21 41 45 1.25
166 54 43 -21 49 16 12 24 42.0 30 237 -50 165 57 10 -22 6 43 167 53 31 -21 30 35 165 26 27 -22 15 41 168 25 58 -21 19 54 1.25
166 59 51 -21 27 38 12 24 43.4 29 237 -51 166 2 9 -21 45 17 167 58 49 -21 8 43 165 31 23 -21 54 22 168 31 22 -20 57 54 1.25
167 5 10 -21 5 51 12 24 44.8 29 237 -51 166 7 20 -21 23 43 168 4 20 -20 46 42 165 36 29 -21 32 55 168 37 0 -20 35 45 1.25
167 10 42 -20 43 56 12 24 46.2 29 237 -51 166 12 42 -21 2 1 168 10 4 -20 24 32 165 41 47 -21 11 19 168 42 51 -20 13 26 1.25
167 16 27 -20 21 51 12 24 47.6 29 237 -52 166 18 17 -20 40 11 168 16 1 -20 2 12 165 47 16 -20 49 36 168 48 56 -19 50 56 1.25
167 22 26 -19 59 37 12 24 48.9 28 237 -52 166 24 3 -20 18 11 168 22 13 -19 39 41 165 52 58 -20 27 44 168 55 16 -19 28 16 1.25
167 28 37 -19 37 13 12 24 50.3 28 236 -53 166 30 3 -19 56 3 168 28 39 -19 17 0 165 58 51 -20 5 43 169 1 51 -19 5 25 1.26
167 35 3 -19 14 39 12 24 51.7 28 236 -53 166 36 15 -19 33 45 168 35 20 -18 54 8 166 4 57 -19 43 33 169 8 41 -18 42 22 1.26
167 41 42 -18 51 54 12 24 53.1 27 236 -53 166 42 41 -19 11 17 168 42 16 -18 31 5 166 11 16 -19 21 13 169 15 47 -18 19 8 1.26
167 48 37 -18 28 59 12 24 54.5 27 236 -54 166 49 20 -18 48 39 168 49 28 -18 7 50 166 17 48 -18 58 44 169 23 10 -17 55 41 1.26
167 55 46 -18 5 52 12 24 55.9 27 236 -54 166 56 13 -18 25 50 168 56 56 -17 44 22 166 24 34 -18 36 5 169 30 50 -17 32 1 1.26
168 3 11 -17 42 33 12 24 57.2 26 236 -54 167 3 21 -18 2 51 169 4 41 -17 20 42 166 31 34 -18 13 15 169 38 48 -17 8 8 1.26
168 10 52 -17 19 2 12 24 58.6 26 235 -55 167 10 44 -17 39 40 169 12 44 -16 56 48 166 38 48 -17 50 14 169 47 4 -16 44 0 1.26
Uncertainty in time = +/- 2 secs
Prediction of 2020 Sep 14.0
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