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Updated: 2022 Jun 13, 20:50 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 Aug 08 UT, the 157 km diameter asteroid (911) Agamemnon will occult a 11.0 mag star in the constellation Auriga for observers along a path across north-western Victoria, western New South Wales and Queensland, passing over Mildura and Rockhampton.
In the case of an occultation, the combined light of the asteroid and the star will drop by 4.8 mag to 15.76 mag (the magnitude of the asteroid) for at most 5.3 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 2902-02461-1 by 911 Agamemnon on 2022 Aug 8
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
141 7 59 -35 0 47 19 49 48.5 5 27 -19 142 26 8 -31 32 14 ... .. .. .. .. .. 142 40 57 -30 41 35 ... .. .. .. .. .. ....
142 39 6 -32 54 20 19 49 49.8 8 26 -18 143 28 7 -30 8 55 140 31 44 -37 39 49 143 38 36 -29 24 44 ... .. .. .. .. .. 0.59
143 47 22 -31 20 49 19 49 51.1 9 25 -17 144 21 45 -28 57 34 142 42 50 -34 32 58 144 29 27 -28 17 38 142 5 50 -35 59 33 0.65
144 44 37 -30 3 20 19 49 52.3 11 25 -16 145 9 49 -27 54 15 144 1 40 -32 42 33 145 15 33 -27 17 22 143 41 7 -33 44 19 0.67
145 35 4 -28 55 49 19 49 53.6 12 24 -15 145 53 51 -26 56 49 145 4 13 -31 16 11 145 58 7 -26 22 16 144 50 23 -32 7 32 0.68
146 20 46 -27 55 18 19 49 54.8 13 24 -14 146 34 47 -26 3 57 145 57 54 -30 2 59 146 37 55 -25 31 15 145 47 56 -30 48 14 0.69
147 2 58 -27 0 1 19 49 56.1 15 23 -13 147 13 15 -25 14 44 146 45 49 -28 58 26 147 15 27 -24 43 33 146 38 24 -29 39 35 0.70
147 42 24 -26 8 53 19 49 57.4 16 23 -12 147 49 43 -24 28 32 147 29 37 -28 0 8 147 51 9 -23 58 37 147 24 2 -28 38 16 0.70
148 19 37 -25 21 6 19 49 58.6 17 23 -12 148 24 28 -23 44 54 148 10 16 -27 6 36 148 25 16 -23 16 3 148 6 5 -27 42 24 0.71
148 55 1 -24 36 8 19 49 59.9 17 22 -11 148 57 48 -23 3 27 148 48 26 -26 16 54 148 58 2 -22 35 33 148 45 22 -26 50 49 0.71
149 28 51 -23 53 33 19 50 1.2 18 22 -10 149 29 52 -22 23 55 149 24 35 -25 30 19 149 29 39 -21 56 50 149 22 24 -26 2 42 0.71
150 1 21 -23 13 2 19 50 2.4 19 22 -10 150 0 52 -21 46 4 149 59 3 -24 46 23 150 0 13 -21 19 43 149 57 36 -25 17 28 0.71
150 32 42 -22 34 20 19 50 3.7 20 22 -9 150 30 53 -21 9 44 150 32 4 -24 4 42 150 29 53 -20 44 1 150 31 16 -24 34 40 0.72
151 3 3 -21 57 15 19 50 4.9 21 21 -8 151 0 4 -20 34 44 151 3 52 -23 24 59 150 58 44 -20 9 37 151 3 35 -23 54 0 0.72
151 32 29 -21 21 35 19 50 6.2 21 21 -8 151 28 28 -20 0 58 151 34 35 -22 47 1 151 26 52 -19 36 22 151 34 46 -23 15 10 0.72
152 1 8 -20 47 13 19 50 7.5 22 21 -7 151 56 12 -19 28 19 152 4 21 -22 10 34 151 54 19 -19 4 12 152 4 57 -22 37 58 0.72
152 29 3 -20 14 2 19 50 8.7 23 21 -7 152 23 17 -18 56 41 152 33 16 -21 35 30 152 21 11 -18 33 1 152 34 13 -22 2 14 0.72
152 56 20 -19 41 55 19 50 10.0 23 20 -6 152 49 48 -18 26 0 153 1 26 -21 1 42 152 47 29 -18 2 43 153 2 42 -21 27 49 0.72
153 23 1 -19 10 47 19 50 11.3 24 20 -6 153 15 48 -17 56 11 153 28 55 -20 29 1 153 13 17 -17 33 17 153 30 29 -20 54 35 0.72
153 49 9 -18 40 34 19 50 12.5 25 20 -5 153 41 20 -17 27 10 153 55 47 -19 57 23 153 38 38 -17 4 37 153 57 36 -20 22 26 0.73
154 14 48 -18 11 12 19 50 13.8 25 20 -5 154 6 24 -16 58 55 154 22 6 -19 26 42 154 3 33 -16 36 40 154 24 9 -19 51 18 0.73
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