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Updated: 2023 Jun 27, 04:35 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 2023 Aug 29 UT, the 93 km diameter asteroid (326) Tamara will occult a 12.0 mag star in the constellation Pavo for observers along a path across West Australia, passing near Esperance and Kalgoorlie.
In the case of an occultation, the combined light of the asteroid and the star will drop by 1.0 mag to 12.40 mag (the magnitude of the asteroid) for at most 9.1 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 147-227076 by 326 Tamara on 2023 Aug 29
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
122 56 10 -37 8 11 13 29 26.8 66 182 -48 123 27 27 -37 5 25 122 24 51 -37 10 44 123 39 34 -37 4 17 122 12 42 -37 11 40 -0.06
122 53 3 -36 46 56 13 29 30.3 66 182 -48 123 24 11 -36 44 11 122 21 52 -36 49 29 123 36 15 -36 43 3 122 9 47 -36 50 25 -0.06
122 49 57 -36 25 38 13 29 33.8 65 181 -48 123 20 57 -36 22 53 122 18 55 -36 28 10 123 32 57 -36 21 45 122 6 53 -36 29 5 -0.06
122 46 52 -36 4 16 13 29 37.4 65 181 -48 123 17 44 -36 1 31 122 15 59 -36 6 47 123 29 41 -36 0 24 122 4 0 -36 7 43 -0.06
122 43 49 -35 42 50 13 29 40.9 65 181 -49 123 14 33 -35 40 5 122 13 4 -35 45 21 123 26 26 -35 38 58 122 1 8 -35 46 16 -0.06
122 40 47 -35 21 20 13 29 44.4 64 181 -49 123 11 23 -35 18 36 122 10 10 -35 23 51 123 23 13 -35 17 29 121 58 18 -35 24 46 -0.07
122 37 47 -34 59 46 13 29 47.9 64 181 -49 123 8 14 -34 57 3 122 7 17 -35 2 16 123 20 2 -34 55 56 121 55 28 -35 3 11 -0.07
122 34 47 -34 38 8 13 29 51.4 64 181 -49 123 5 7 -34 35 25 122 4 26 -34 40 38 123 16 51 -34 34 18 121 52 40 -34 41 33 -0.07
122 31 49 -34 16 26 13 29 55.0 63 181 -49 123 2 1 -34 13 43 122 1 35 -34 18 56 123 13 42 -34 12 37 121 49 52 -34 19 50 -0.07
122 28 52 -33 54 40 13 29 58.5 63 181 -49 122 58 56 -33 51 58 121 58 46 -33 57 9 123 10 34 -33 50 52 121 47 6 -33 58 3 -0.07
122 25 56 -33 32 50 13 30 2.0 63 181 -50 122 55 52 -33 30 8 121 55 57 -33 35 18 123 7 28 -33 29 2 121 44 20 -33 36 12 -0.07
122 23 1 -33 10 55 13 30 5.5 62 181 -50 122 52 50 -33 8 13 121 53 10 -33 13 23 123 4 23 -33 7 7 121 41 36 -33 14 17 -0.07
122 20 7 -32 48 55 13 30 9.0 62 181 -50 122 49 49 -32 46 14 121 50 23 -32 51 23 123 1 19 -32 45 8 121 38 52 -32 52 17 -0.07
122 17 14 -32 26 51 13 30 12.5 61 181 -50 122 46 49 -32 24 10 121 47 38 -32 29 19 122 58 16 -32 23 4 121 36 9 -32 30 13 -0.07
122 14 23 -32 4 42 13 30 16.1 61 181 -50 122 43 50 -32 2 2 121 44 53 -32 7 10 122 55 15 -32 0 56 121 33 28 -32 8 3 -0.07
122 11 32 -31 42 28 13 30 19.6 61 181 -50 122 40 53 -31 39 48 121 42 10 -31 44 56 122 52 14 -31 38 43 121 30 47 -31 45 49 -0.07
122 8 43 -31 20 10 13 30 23.1 60 181 -50 122 37 56 -31 17 30 121 39 27 -31 22 37 122 49 15 -31 16 25 121 28 7 -31 23 30 -0.07
122 5 54 -30 57 46 13 30 26.6 60 181 -51 122 35 1 -30 55 7 121 36 45 -31 0 13 122 46 17 -30 54 1 121 25 28 -31 1 6 -0.07
122 3 6 -30 35 17 13 30 30.1 60 181 -51 122 32 7 -30 32 38 121 34 5 -30 37 44 122 43 20 -30 31 33 121 22 49 -30 38 37 -0.07
122 0 20 -30 12 43 13 30 33.7 59 181 -51 122 29 13 -30 10 4 121 31 24 -30 15 10 122 40 25 -30 8 59 121 20 12 -30 16 3 -0.07
121 57 34 -29 50 4 13 30 37.2 59 181 -51 122 26 21 -29 47 25 121 28 45 -29 52 30 122 37 30 -29 46 20 121 17 35 -29 53 23 -0.07
121 54 49 -29 27 19 13 30 40.7 59 181 -51 122 23 30 -29 24 40 121 26 7 -29 29 45 122 34 36 -29 23 35 121 14 59 -29 30 38 -0.07
121 52 5 -29 4 28 13 30 44.2 58 181 -51 122 20 40 -29 1 50 121 23 29 -29 6 54 122 31 43 -29 0 45 121 12 24 -29 7 47 -0.07
121 49 22 -28 41 32 13 30 47.7 58 180 -51 122 17 50 -28 38 54 121 20 52 -28 43 57 122 28 52 -28 37 49 121 9 50 -28 44 50 -0.07
121 46 40 -28 18 30 13 30 51.3 57 180 -51 122 15 2 -28 15 52 121 18 16 -28 20 55 122 26 1 -28 14 47 121 7 16 -28 21 48 -0.07
121 43 58 -27 55 22 13 30 54.8 57 180 -52 122 12 15 -27 52 44 121 15 41 -27 57 47 122 23 11 -27 51 39 121 4 43 -27 58 39 -0.07
121 41 18 -27 32 7 13 30 58.3 57 180 -52 122 9 28 -27 29 29 121 13 6 -27 34 32 122 20 23 -27 28 25 121 2 11 -27 35 25 -0.07
121 38 38 -27 8 46 13 31 1.8 56 180 -52 122 6 43 -27 6 9 121 10 32 -27 11 11 122 17 35 -27 5 4 120 59 39 -27 12 4 -0.07
121 35 59 -26 45 19 13 31 5.3 56 180 -52 122 3 58 -26 42 42 121 7 59 -26 47 44 122 14 48 -26 41 37 120 57 8 -26 48 36 -0.07
121 33 21 -26 21 45 13 31 8.9 55 180 -52 122 1 14 -26 19 8 121 5 27 -26 24 10 122 12 2 -26 18 3 120 54 38 -26 25 2 -0.07
121 30 43 -25 58 5 13 31 12.4 55 180 -52 121 58 31 -25 55 27 121 2 55 -26 0 29 122 9 17 -25 54 23 120 52 8 -26 1 22 -0.07
121 28 7 -25 34 17 13 31 15.9 55 180 -52 121 55 49 -25 31 40 121 0 24 -25 36 42 122 6 32 -25 30 35 120 49 39 -25 37 34 -0.07
121 25 31 -25 10 23 13 31 19.4 54 180 -52 121 53 7 -25 7 45 120 57 53 -25 12 47 122 3 49 -25 6 41 120 47 11 -25 13 39 -0.07
121 22 55 -24 46 21 13 31 22.9 54 180 -52 121 50 27 -24 43 43 120 55 23 -24 48 45 122 1 6 -24 42 39 120 44 43 -24 49 37 -0.07
121 20 21 -24 22 11 13 31 26.5 54 180 -53 121 47 47 -24 19 34 120 52 54 -24 24 35 121 58 24 -24 18 30 120 42 15 -24 25 28 -0.07
121 17 47 -23 57 54 13 31 30.0 53 180 -53 121 45 8 -23 55 17 120 50 25 -24 0 18 121 55 43 -23 54 13 120 39 49 -24 1 11 -0.07
121 15 14 -23 33 29 13 31 33.5 53 180 -53 121 42 29 -23 30 52 120 47 57 -23 35 54 121 53 3 -23 29 48 120 37 22 -23 36 46 -0.07
121 12 41 -23 8 56 13 31 37.0 52 180 -53 121 39 52 -23 6 19 120 45 29 -23 11 21 121 50 23 -23 5 15 120 34 57 -23 12 13 -0.07
121 10 9 -22 44 15 13 31 40.5 52 180 -53 121 37 15 -22 41 38 120 43 2 -22 46 39 121 47 44 -22 40 33 120 32 31 -22 47 32 -0.07
121 7 37 -22 19 26 13 31 44.1 51 180 -53 121 34 39 -22 16 48 120 40 35 -22 21 50 121 45 6 -22 15 44 120 30 7 -22 22 42 -0.07
121 5 7 -21 54 27 13 31 47.6 51 180 -53 121 32 3 -21 51 50 120 38 9 -21 56 52 121 42 29 -21 50 45 120 27 42 -21 57 44 -0.08
121 2 36 -21 29 20 13 31 51.1 51 180 -53 121 29 28 -21 26 42 120 35 44 -21 31 44 121 39 52 -21 25 38 120 25 19 -21 32 37 -0.08
121 0 7 -21 4 4 13 31 54.6 50 180 -53 121 26 54 -21 1 26 120 33 18 -21 6 28 121 37 16 -21 0 21 120 22 55 -21 7 20 -0.08
120 57 38 -20 38 38 13 31 58.1 50 180 -53 121 24 20 -20 36 0 120 30 54 -20 41 2 121 34 41 -20 34 55 120 20 32 -20 41 55 -0.08
120 55 9 -20 13 2 13 32 1.7 49 180 -53 121 21 47 -20 10 24 120 28 30 -20 15 27 121 32 6 -20 9 19 120 18 10 -20 16 20 -0.08
120 52 41 -19 47 17 13 32 5.2 49 180 -53 121 19 15 -19 44 39 120 26 6 -19 49 42 121 29 32 -19 43 34 120 15 48 -19 50 34 -0.08
120 50 13 -19 21 21 13 32 8.7 49 180 -53 121 16 43 -19 18 43 120 23 42 -19 23 46 121 26 59 -19 17 38 120 13 26 -19 24 39 -0.08
120 47 46 -18 55 15 13 32 12.2 48 180 -53 121 14 12 -18 52 36 120 21 19 -18 57 40 121 24 26 -18 51 31 120 11 5 -18 58 33 -0.08
120 45 19 -18 28 58 13 32 15.7 48 180 -54 121 11 41 -18 26 19 120 18 57 -18 31 24 121 21 54 -18 25 14 120 8 44 -18 32 16 -0.08
120 42 53 -18 2 30 13 32 19.2 47 180 -54 121 9 11 -17 59 51 120 16 35 -18 4 56 121 19 22 -17 58 45 120 6 23 -18 5 49 -0.08
120 40 27 -17 35 51 13 32 22.8 47 180 -54 121 6 41 -17 33 11 120 14 13 -17 38 17 121 16 51 -17 32 5 120 4 2 -17 39 9 -0.08
120 38 2 -17 8 59 13 32 26.3 46 180 -54 121 4 12 -17 6 19 120 11 51 -17 11 26 121 14 20 -17 5 13 120 1 42 -17 12 18 -0.08
120 35 37 -16 41 56 13 32 29.8 46 180 -54 121 1 43 -16 39 15 120 9 30 -16 44 22 121 11 50 -16 38 9 119 59 23 -16 45 15 -0.08
120 33 12 -16 14 40 13 32 33.3 45 180 -54 120 59 15 -16 11 59 120 7 9 -16 17 7 121 9 20 -16 10 53 119 57 3 -16 18 0 -0.08
120 30 48 -15 47 11 13 32 36.8 45 180 -54 120 56 48 -15 44 30 120 4 48 -15 49 38 121 6 51 -15 43 24 119 54 44 -15 50 31 -0.08
120 28 24 -15 19 28 13 32 40.4 45 180 -54 120 54 20 -15 16 47 120 2 28 -15 21 56 121 4 23 -15 15 41 119 52 25 -15 22 49 -0.08
120 26 1 -14 51 33 13 32 43.9 44 180 -54 120 51 53 -14 48 51 120 0 8 -14 54 0 121 1 55 -14 47 44 119 50 6 -14 54 54 -0.08
120 23 38 -14 23 23 13 32 47.4 44 180 -54 120 49 27 -14 20 40 119 57 48 -14 25 50 120 59 27 -14 19 33 119 47 47 -14 26 44 -0.08
120 21 15 -13 54 57 13 32 50.9 43 180 -54 120 47 1 -13 52 14 119 55 28 -13 57 26 120 57 0 -13 51 7 119 45 29 -13 58 20 -0.08
120 18 52 -13 26 17 13 32 54.4 43 180 -54 120 44 35 -13 23 33 119 53 9 -13 28 47 120 54 33 -13 22 26 119 43 11 -13 29 41 -0.08
120 16 30 -12 57 21 13 32 58.0 42 180 -54 120 42 10 -12 54 36 119 50 50 -12 59 51 120 52 6 -12 53 29 119 40 53 -13 0 45 -0.08
120 14 8 -12 28 9 13 33 1.5 42 180 -54 120 39 45 -12 25 23 119 48 30 -12 30 39 120 49 40 -12 24 15 119 38 35 -12 31 34 -0.08
120 11 46 -11 58 39 13 33 5.0 41 180 -54 120 37 20 -11 55 53 119 46 11 -12 1 10 120 47 15 -11 54 45 119 36 17 -12 2 5 -0.08
120 9 25 -11 28 52 13 33 8.5 41 180 -54 120 34 56 -11 26 5 119 43 53 -11 31 24 120 44 49 -11 24 57 119 33 59 -11 32 19 -0.08
120 7 3 -10 58 47 13 33 12.0 40 180 -54 120 32 32 -10 55 59 119 41 34 -11 1 20 120 42 24 -10 54 50 119 31 41 -11 2 15 -0.08
120 4 42 -10 28 23 13 33 15.6 40 180 -54 120 30 8 -10 25 35 119 39 15 -10 30 56 120 39 59 -10 24 25 119 29 24 -10 31 52 -0.08
120 2 21 - 9 57 40 13 33 19.1 39 180 -54 120 27 45 - 9 54 50 119 36 57 -10 0 14 120 37 35 - 9 53 40 119 27 6 -10 1 9 -0.08
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