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Updated: 2022 JUL 28, 21:36 UT
Event Rank : 100
(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 Sep 19 UT, the 127.1 km diameter asteroid (772) Tanete will occult a 11.7 mag star in the constellation Taurus for observers along a path across south-eastern Australia, from Kingston SE across south-eastern sam north-western Victoria western New South Wales and south-eastern Queensland to Bundaberg, all at low elevation.
In the case of an occultation, the combined light of the asteroid and the star will drop by 2.70 mag to 14.34 mag (the magnitude of the asteroid) for at most 7.360 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, 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 586-021400 by 772 Tanete on 2022 Sep 19
Centre Star Star Sun Path Limits Error Limits Alt
E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn
o ' " o ' " h m s o o o o ' " o ' " o ' " o ' "
Longitude Longitude Longitude Longitude
134 46 30 -40 0 0 17 45 24.0 9 43 -35 135 54 46 133 37 52 136 2 26 133 30 7 0.31
136 6 24 -39 0 0 17 45 25.7 10 42 -35 137 13 19 134 59 11 137 20 49 134 51 35 0.32
137 24 19 -38 0 0 17 45 27.5 12 41 -35 138 29 58 136 18 23 138 37 20 136 10 57 0.32
138 40 24 -37 0 0 17 45 29.6 13 40 -34 139 44 53 137 35 40 139 52 8 137 28 22 0.33
139 54 50 -36 0 0 17 45 31.9 15 40 -34 140 58 14 138 51 13 141 5 22 138 44 2 0.33
141 7 45 -35 0 0 17 45 34.5 16 39 -33 142 10 10 140 5 9 142 17 11 139 58 6 0.33
142 19 18 -34 0 0 17 45 37.3 17 38 -33 143 20 48 141 17 39 143 27 43 141 10 42 0.33
143 29 36 -33 0 0 17 45 40.2 19 37 -32 144 30 15 142 28 50 144 37 4 142 21 59 0.34
144 38 46 -32 0 0 17 45 43.4 20 37 -32 145 38 37 143 38 48 145 45 21 143 32 3 0.34
145 46 54 -31 0 0 17 45 46.8 22 36 -31 146 46 2 144 47 42 146 52 41 144 41 1 0.34
146 54 7 -30 0 0 17 45 50.5 23 35 -31 147 52 35 145 55 36 147 59 10 145 49 0 0.34
148 0 30 -29 0 0 17 45 54.3 24 35 -30 148 58 21 147 2 37 149 4 52 146 56 6 0.34
149 6 8 -28 0 0 17 45 58.3 26 34 -29 150 3 26 148 8 50 150 9 53 148 2 23 0.34
150 11 7 -27 0 0 17 46 2.6 27 33 -29 151 7 54 149 14 21 151 14 17 149 7 58 0.34
151 15 32 -26 0 0 17 46 7.0 28 33 -28 152 11 50 150 19 15 152 18 10 150 12 55 0.34
152 19 26 -25 0 0 17 46 11.7 30 32 -27 153 15 19 151 23 35 153 21 37 151 17 18 0.35
153 22 55 -24 0 0 17 46 16.6 31 32 -26 154 18 25 152 27 28 154 24 40 152 21 14 0.35
154 26 2 -23 0 0 17 46 21.6 33 31 -26 155 21 12 153 30 57 155 27 25 153 24 45 0.35
155 28 52 -22 0 0 17 46 26.9 34 30 -25 156 23 44 154 34 6 156 29 55 154 27 56 0.35
156 31 29 -21 0 0 17 46 32.4 35 30 -24 157 26 6 155 36 59 157 32 15 155 30 51 0.35
157 33 57 -20 0 0 17 46 38.1 37 29 -23 158 28 21 156 39 41 158 34 29 156 33 35 0.35
158 36 20 -19 0 0 17 46 43.9 38 28 -22 159 30 33 157 42 15 159 36 40 157 36 11 0.35
159 38 41 -18 0 0 17 46 50.0 39 28 -21 160 32 46 158 44 46 160 38 52 158 38 42 0.35
160 41 5 -17 0 0 17 46 56.3 41 27 -20 161 35 4 159 47 17 161 41 9 159 41 14 0.35
161 43 36 -16 0 0 17 47 2.8 42 26 -20 162 37 31 160 49 52 162 43 35 160 43 50 0.35
162 46 16 -15 0 0 17 47 9.5 43 26 -19 163 40 10 161 52 35 163 46 15 161 46 33 0.35
163 49 11 -14 0 0 17 47 16.4 45 25 -18 164 43 6 162 55 30 164 49 11 162 49 28 0.35
164 52 24 -13 0 0 17 47 23.4 46 24 -17 165 46 22 163 58 41 165 52 27 163 52 39 0.35
165 56 0 -12 0 0 17 47 30.7 47 23 -16 166 50 3 165 2 12 166 56 9 164 56 9 0.36
Uncertainty in time = +/- 2 secs
Prediction of 2022 Jul 28.9
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