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Updated: 2022 Oct 31, 00:51 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 Dec 23 UT, the 130 km diameter asteroid (654) Zelinda will occult a 12.2 mag star in the constellation Sextans for observers along a path across eastern West Australia.
In the case of an occultation, the combined light of the asteroid and the star will drop by only 0.4 mag to 11.21 mag (the magnitude of the asteroid) for at most 11.7 seconds. This event may not be observable visually.
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 0236-00952-1 by 654 Zelinda on 2022 Dec 23
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
125 35 53 -10 6 2 18 38 8.5 76 38 -34 126 11 50 -10 2 10 124 59 52 -10 9 55 126 15 26 -10 1 47 124 56 15 -10 10 19 0.16
125 36 45 -10 28 55 18 38 12.2 76 37 -34 126 12 44 -10 25 2 125 0 41 -10 32 48 126 16 21 -10 24 39 124 57 3 -10 33 12 0.16
125 37 35 -10 51 49 18 38 15.9 75 36 -34 126 13 37 -10 47 56 125 1 29 -10 55 43 126 17 14 -10 47 33 124 57 51 -10 56 6 0.16
125 38 24 -11 14 46 18 38 19.7 75 35 -34 126 14 29 -11 10 52 125 2 15 -11 18 39 126 18 6 -11 10 29 124 58 37 -11 19 3 0.16
125 39 12 -11 37 44 18 38 23.4 75 35 -33 126 15 20 -11 33 50 125 3 0 -11 41 38 126 18 58 -11 33 27 124 59 21 -11 42 2 0.16
125 39 59 -12 0 44 18 38 27.1 75 34 -33 126 16 10 -11 56 50 125 3 44 -12 4 39 126 19 48 -11 56 27 125 0 5 -12 5 2 0.16
125 40 45 -12 23 47 18 38 30.8 74 33 -33 126 16 59 -12 19 52 125 4 26 -12 27 41 126 20 37 -12 19 29 125 0 47 -12 28 5 0.16
125 41 29 -12 46 51 18 38 34.5 74 32 -33 126 17 47 -12 42 56 125 5 8 -12 50 46 126 21 25 -12 42 33 125 1 28 -12 51 10 0.16
125 42 13 -13 9 58 18 38 38.3 74 31 -32 126 18 34 -13 6 3 125 5 48 -13 13 53 126 22 13 -13 5 39 125 2 8 -13 14 17 0.16
125 42 55 -13 33 7 18 38 42.0 73 31 -32 126 19 19 -13 29 12 125 6 26 -13 37 3 126 22 59 -13 28 48 125 2 46 -13 37 27 0.16
125 43 36 -13 56 19 18 38 45.7 73 30 -32 126 20 4 -13 52 23 125 7 4 -14 0 15 126 23 44 -13 51 59 125 3 23 -14 0 39 0.16
125 44 16 -14 19 33 18 38 49.4 73 29 -32 126 20 48 -14 15 36 125 7 40 -14 23 29 126 24 28 -14 15 13 125 3 59 -14 23 53 0.16
125 44 55 -14 42 49 18 38 53.2 72 28 -31 126 21 31 -14 38 52 125 8 15 -14 46 46 126 25 11 -14 38 29 125 4 33 -14 47 10 0.16
125 45 33 -15 6 8 18 38 56.9 72 28 -31 126 22 12 -15 2 11 125 8 48 -15 10 6 126 25 53 -15 1 47 125 5 6 -15 10 30 0.16
125 46 9 -15 29 30 18 39 0.6 72 27 -31 126 22 53 -15 25 33 125 9 21 -15 33 28 126 26 34 -15 25 9 125 5 38 -15 33 52 0.16
125 46 44 -15 52 55 18 39 4.3 71 27 -31 126 23 32 -15 48 57 125 9 52 -15 56 53 126 27 14 -15 48 33 125 6 9 -15 57 17 0.16
125 47 19 -16 16 22 18 39 8.1 71 26 -30 126 24 11 -16 12 24 125 10 21 -16 20 21 126 27 53 -16 12 0 125 6 38 -16 20 45 0.16
125 47 52 -16 39 53 18 39 11.8 71 25 -30 126 24 49 -16 35 54 125 10 50 -16 43 52 126 28 31 -16 35 30 125 7 6 -16 44 16 0.16
125 48 24 -17 3 26 18 39 15.5 70 25 -30 126 25 25 -16 59 27 125 11 17 -17 7 26 126 29 8 -16 59 3 125 7 33 -17 7 50 0.16
125 48 54 -17 27 3 18 39 19.2 70 24 -29 126 26 1 -17 23 3 125 11 43 -17 31 3 126 29 44 -17 22 39 125 7 58 -17 31 27 0.16
125 49 24 -17 50 43 18 39 23.0 70 24 -29 126 26 35 -17 46 42 125 12 7 -17 54 44 126 30 19 -17 46 18 125 8 22 -17 55 8 0.16
125 49 52 -18 14 26 18 39 26.7 69 23 -29 126 27 8 -18 10 25 125 12 31 -18 18 27 126 30 53 -18 10 0 125 8 45 -18 18 51 0.16
125 50 19 -18 38 12 18 39 30.4 69 23 -29 126 27 41 -18 34 11 125 12 53 -18 42 14 126 31 26 -18 33 46 125 9 6 -18 42 39 0.16
125 50 45 -19 2 2 18 39 34.1 69 23 -28 126 28 12 -18 58 0 125 13 13 -19 6 5 126 31 58 -18 57 36 125 9 27 -19 6 29 0.16
125 51 10 -19 25 56 18 39 37.9 68 22 -28 126 28 42 -19 21 53 125 13 32 -19 29 59 126 32 29 -19 21 28 125 9 45 -19 30 23 0.16
125 51 34 -19 49 53 18 39 41.6 68 22 -28 126 29 12 -19 45 49 125 13 50 -19 53 57 126 32 58 -19 45 25 125 10 3 -19 54 21 0.16
125 51 56 -20 13 54 18 39 45.3 67 21 -27 126 29 40 -20 9 50 125 14 7 -20 17 58 126 33 27 -20 9 25 125 10 18 -20 18 23 0.16
125 52 17 -20 37 58 18 39 49.0 67 21 -27 126 30 7 -20 33 54 125 14 22 -20 42 4 126 33 55 -20 33 29 125 10 33 -20 42 28 0.16
125 52 37 -21 2 7 18 39 52.8 67 20 -27 126 30 33 -20 58 2 125 14 36 -21 6 13 126 34 22 -20 57 37 125 10 46 -21 6 38 0.16
125 52 56 -21 26 20 18 39 56.5 66 20 -27 126 30 58 -21 22 14 125 14 48 -21 30 26 126 34 47 -21 21 49 125 10 58 -21 30 51 0.16
125 53 14 -21 50 37 18 40 0.2 66 20 -26 126 31 22 -21 46 30 125 14 59 -21 54 44 126 35 12 -21 46 5 125 11 8 -21 55 9 0.16
125 53 30 -22 14 58 18 40 3.9 66 19 -26 126 31 45 -22 10 51 125 15 9 -22 19 6 126 35 36 -22 10 26 125 11 17 -22 19 31 0.16
125 53 45 -22 39 24 18 40 7.7 65 19 -26 126 32 7 -22 35 16 125 15 17 -22 43 32 126 35 58 -22 34 51 125 11 24 -22 43 57 0.16
125 53 58 -23 3 54 18 40 11.4 65 19 -25 126 32 28 -22 59 45 125 15 23 -23 8 3 126 36 19 -22 59 20 125 11 30 -23 8 28 0.15
125 54 11 -23 28 29 18 40 15.1 64 18 -25 126 32 47 -23 24 19 125 15 28 -23 32 39 126 36 40 -23 23 54 125 11 35 -23 33 4 0.15
125 54 22 -23 53 8 18 40 18.8 64 18 -25 126 33 6 -23 48 58 125 15 32 -23 57 19 126 36 59 -23 48 33 125 11 37 -23 57 44 0.15
125 54 32 -24 17 53 18 40 22.6 64 18 -25 126 33 23 -24 13 41 125 15 34 -24 22 4 126 37 17 -24 13 16 125 11 39 -24 22 30 0.15
125 54 40 -24 42 42 18 40 26.3 63 18 -24 126 33 39 -24 38 30 125 15 35 -24 46 55 126 37 34 -24 38 5 125 11 38 -24 47 20 0.15
125 54 47 -25 7 36 18 40 30.0 63 17 -24 126 33 54 -25 3 24 125 15 34 -25 11 50 126 37 50 -25 2 58 125 11 37 -25 12 15 0.15
125 54 53 -25 32 36 18 40 33.7 62 17 -24 126 34 8 -25 28 22 125 15 31 -25 36 51 126 38 4 -25 27 57 125 11 33 -25 37 16 0.15
125 54 57 -25 57 41 18 40 37.5 62 17 -23 126 34 20 -25 53 27 125 15 27 -26 1 57 126 38 18 -25 53 1 125 11 28 -26 2 22 0.15
125 55 0 -26 22 52 18 40 41.2 62 16 -23 126 34 32 -26 18 36 125 15 21 -26 27 8 126 38 30 -26 18 11 125 11 21 -26 27 34 0.15
125 55 1 -26 48 8 18 40 44.9 61 16 -23 126 34 42 -26 43 52 125 15 13 -26 52 25 126 38 41 -26 43 26 125 11 13 -26 52 51 0.15
125 55 1 -27 13 30 18 40 48.6 61 16 -23 126 34 51 -27 9 13 125 15 4 -27 17 49 126 38 51 -27 8 47 125 11 2 -27 18 15 -0.15
125 54 59 -27 38 58 18 40 52.4 60 16 -22 126 34 59 -27 34 40 125 14 52 -27 43 18 126 38 59 -27 34 14 125 10 50 -27 43 44 -0.15
125 54 56 -28 4 33 18 40 56.1 60 15 -22 126 35 5 -28 0 13 125 14 40 -28 8 53 126 39 7 -27 59 47 125 10 36 -28 9 19 -0.15
125 54 51 -28 30 13 18 40 59.8 60 15 -22 126 35 10 -28 25 53 125 14 25 -28 34 35 126 39 13 -28 25 26 125 10 20 -28 35 1 -0.15
125 54 45 -28 56 0 18 41 3.5 59 15 -21 126 35 14 -28 51 38 125 14 8 -29 0 23 126 39 17 -28 51 12 125 10 3 -29 0 49 -0.15
125 54 37 -29 21 54 18 41 7.3 59 15 -21 126 35 16 -29 17 31 125 13 50 -29 26 17 126 39 21 -29 17 4 125 9 43 -29 26 44 -0.15
125 54 27 -29 47 54 18 41 11.0 58 15 -21 126 35 17 -29 43 30 125 13 29 -29 52 19 126 39 23 -29 43 4 125 9 22 -29 52 45 -0.15
125 54 15 -30 14 1 18 41 14.7 58 14 -20 126 35 16 -30 9 36 125 13 7 -30 18 27 126 39 23 -30 9 10 125 8 58 -30 18 54 -0.15
125 54 2 -30 40 16 18 41 18.4 58 14 -20 126 35 14 -30 35 49 125 12 42 -30 44 43 126 39 23 -30 35 23 125 8 32 -30 45 10 -0.15
125 53 47 -31 6 38 18 41 22.2 57 14 -20 126 35 11 -31 2 10 125 12 15 -31 11 6 126 39 20 -31 1 43 125 8 4 -31 11 33 -0.15
125 53 30 -31 33 7 18 41 25.9 57 14 -19 126 35 6 -31 28 38 125 11 47 -31 37 37 126 39 16 -31 28 11 125 7 34 -31 38 4 -0.15
125 53 12 -31 59 44 18 41 29.6 56 14 -19 126 34 59 -31 55 14 125 11 15 -32 4 15 126 39 11 -31 54 47 125 7 2 -32 4 42 -0.15
125 52 51 -32 26 29 18 41 33.3 56 14 -19 126 34 51 -32 21 58 125 10 42 -32 31 1 126 39 4 -32 21 30 125 6 27 -32 31 29 -0.15
125 52 28 -32 53 22 18 41 37.1 55 13 -18 126 34 41 -32 48 49 125 10 6 -32 57 56 126 38 56 -32 48 22 125 5 50 -32 58 24 -0.15
125 52 3 -33 20 24 18 41 40.8 55 13 -18 126 34 30 -33 15 50 125 9 28 -33 24 59 126 38 45 -33 15 22 125 5 11 -33 25 27 -0.15
125 51 37 -33 47 34 18 41 44.5 55 13 -18 126 34 17 -33 42 59 125 8 48 -33 52 11 126 38 33 -33 42 31 125 4 29 -33 52 39 -0.15
125 51 7 -34 14 54 18 41 48.2 54 13 -17 126 34 2 -34 10 16 125 8 4 -34 19 32 126 38 20 -34 9 48 125 3 44 -34 20 0 -0.15
125 50 36 -34 42 22 18 41 52.0 54 13 -17 126 33 45 -34 37 43 125 7 18 -34 47 2 126 38 4 -34 37 15 125 2 57 -34 47 30 -0.15
125 50 2 -35 10 0 18 41 55.7 53 13 -17 126 33 26 -35 5 19 125 6 30 -35 14 41 126 37 47 -35 4 51 125 2 7 -35 15 9 -0.15
125 49 26 -35 37 47 18 41 59.4 53 12 -16 126 33 5 -35 33 5 125 5 38 -35 42 30 126 37 28 -35 32 37 125 1 13 -35 42 59 -0.15
125 48 48 -36 5 44 18 42 3.1 52 12 -16 126 32 42 -36 1 1 125 4 44 -36 10 29 126 37 6 -36 0 32 125 0 17 -36 10 58 -0.15
125 48 7 -36 33 52 18 42 6.9 52 12 -16 126 32 17 -36 29 7 125 3 46 -36 38 38 126 36 43 -36 28 38 124 59 18 -36 39 7 -0.15
125 47 23 -37 2 10 18 42 10.6 51 12 -15 126 31 50 -36 57 23 125 2 45 -37 6 58 126 36 18 -36 56 54 124 58 16 -37 7 28 -0.15
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