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Updated: 2021 Sep 02, 06:32 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 2021 Oct 18 UT, the 60 km diameter asteroid (921) Jovita will occult a 9.8 mag star in the constellation Pegasus 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 5.02 mag to 14.84 mag (the magnitude of the asteroid) for at most 6.7 seconds. Note full moon nearby.
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 0571-01701-1 by 921 Jovita on 2021 Oct 18
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
128 45 40 -10 13 20 12 48 50.1 74 332 -50 129 2 7 -10 16 0 128 29 14 -10 10 40 129 10 41 -10 17 24 128 20 42 -10 9 16 0.17
128 41 35 -10 36 11 12 48 54.8 74 333 -49 128 58 3 -10 38 52 128 25 8 -10 33 31 129 6 37 -10 40 16 128 16 34 -10 32 7 0.17
128 37 30 -10 59 5 12 48 59.4 74 333 -49 128 54 0 -11 1 46 128 21 2 -10 56 24 129 2 35 -11 3 10 128 12 28 -10 55 1 0.17
128 33 27 -11 22 1 12 49 4.1 73 334 -49 128 49 57 -11 24 42 128 16 57 -11 19 20 128 58 33 -11 26 6 128 8 23 -11 17 56 0.17
128 29 24 -11 44 59 12 49 8.7 73 335 -49 128 45 56 -11 47 41 128 12 53 -11 42 18 128 54 32 -11 49 5 128 4 18 -11 40 55 0.18
128 25 22 -12 8 0 12 49 13.4 73 335 -48 128 41 55 -12 10 42 128 8 50 -12 5 19 128 50 33 -12 12 6 128 0 14 -12 3 55 0.18
128 21 21 -12 31 4 12 49 18.1 72 336 -48 128 37 55 -12 33 46 128 4 47 -12 28 22 128 46 34 -12 35 10 127 56 10 -12 26 59 0.18
128 17 20 -12 54 10 12 49 22.7 72 337 -48 128 33 56 -12 56 52 128 0 45 -12 51 29 128 42 35 -12 58 17 127 52 7 -12 50 4 0.18
128 13 20 -13 17 19 12 49 27.4 72 337 -48 128 29 58 -13 20 2 127 56 44 -13 14 37 128 38 38 -13 21 26 127 48 5 -13 13 13 0.18
128 9 21 -13 40 31 12 49 32.0 71 338 -48 128 26 1 -13 43 14 127 52 43 -13 37 49 128 34 41 -13 44 39 127 44 4 -13 36 25 0.18
128 5 23 -14 3 46 12 49 36.7 71 338 -47 128 22 4 -14 6 29 127 48 43 -14 1 4 128 30 45 -14 7 54 127 40 3 -13 59 39 0.18
128 1 25 -14 27 4 12 49 41.4 71 339 -47 128 18 8 -14 29 47 127 44 43 -14 24 21 128 26 50 -14 31 12 127 36 2 -14 22 56 0.18
127 57 28 -14 50 25 12 49 46.0 70 339 -47 128 14 12 -14 53 8 127 40 44 -14 47 42 128 22 56 -14 54 34 127 32 2 -14 46 17 0.18
127 53 31 -15 13 49 12 49 50.7 70 340 -47 128 10 18 -15 16 33 127 36 46 -15 11 5 128 19 2 -15 17 58 127 28 3 -15 9 40 0.18
127 49 36 -15 37 16 12 49 55.4 70 340 -46 128 6 24 -15 40 1 127 32 48 -15 34 32 128 15 9 -15 41 26 127 24 4 -15 33 7 0.18
127 45 40 -16 0 47 12 50 0.0 69 341 -46 128 2 31 -16 3 32 127 28 51 -15 58 3 128 11 17 -16 4 57 127 20 6 -15 56 37 0.18
127 41 46 -16 24 21 12 50 4.7 69 341 -46 127 58 38 -16 27 6 127 24 55 -16 21 37 128 7 25 -16 28 32 127 16 9 -16 20 11 0.18
127 37 52 -16 47 59 12 50 9.3 69 342 -46 127 54 46 -16 50 44 127 20 59 -16 45 14 128 3 35 -16 52 10 127 12 12 -16 43 48 0.18
127 33 58 -17 11 40 12 50 14.0 68 342 -45 127 50 55 -17 14 26 127 17 3 -17 8 55 127 59 44 -17 15 52 127 8 15 -17 7 29 0.18
127 30 6 -17 35 25 12 50 18.7 68 343 -45 127 47 4 -17 38 11 127 13 8 -17 32 39 127 55 55 -17 39 38 127 4 19 -17 31 13 0.18
127 26 13 -17 59 14 12 50 23.3 67 343 -45 127 43 14 -18 2 0 127 9 13 -17 56 28 127 52 6 -18 3 27 127 0 23 -17 55 1 0.18
127 22 22 -18 23 6 12 50 28.0 67 343 -44 127 39 25 -18 25 53 127 5 19 -18 20 20 127 48 18 -18 27 20 126 56 28 -18 18 53 0.18
127 18 30 -18 47 3 12 50 32.6 67 344 -44 127 35 36 -18 49 50 127 1 26 -18 44 16 127 44 30 -18 51 17 126 52 33 -18 42 49 0.18
127 14 40 -19 11 4 12 50 37.3 66 344 -44 127 31 48 -19 13 51 126 57 33 -19 8 16 127 40 43 -19 15 19 126 48 38 -19 6 50 0.18
127 10 49 -19 35 9 12 50 42.0 66 345 -44 127 28 0 -19 37 57 126 53 40 -19 32 21 127 36 57 -19 39 25 126 44 44 -19 30 54 0.18
127 7 0 -19 59 18 12 50 46.6 66 345 -43 127 24 13 -20 2 7 126 49 48 -19 56 30 127 33 11 -20 3 34 126 40 51 -19 55 2 0.18
127 3 11 -20 23 32 12 50 51.3 65 345 -43 127 20 27 -20 26 21 126 45 56 -20 20 43 127 29 26 -20 27 49 126 36 58 -20 19 16 0.18
126 59 22 -20 47 50 12 50 55.9 65 346 -43 127 16 41 -20 50 40 126 42 4 -20 45 1 127 25 42 -20 52 8 126 33 5 -20 43 33 0.18
126 55 34 -21 12 13 12 51 0.6 64 346 -43 127 12 55 -21 15 3 126 38 13 -21 9 23 127 21 58 -21 16 32 126 29 12 -21 7 55 0.18
126 51 46 -21 36 41 12 51 5.3 64 346 -42 127 9 10 -21 39 31 126 34 23 -21 33 51 127 18 15 -21 41 0 126 25 20 -21 32 22 0.18
126 47 58 -22 1 13 12 51 9.9 64 346 -42 127 5 26 -22 4 4 126 30 32 -21 58 23 127 14 32 -22 5 33 126 21 28 -21 56 54 0.18
126 44 11 -22 25 51 12 51 14.6 63 347 -42 127 1 42 -22 28 42 126 26 42 -22 23 0 127 10 49 -22 30 12 126 17 36 -22 21 31 0.18
126 40 25 -22 50 34 12 51 19.2 63 347 -41 126 57 59 -22 53 26 126 22 52 -22 47 42 127 7 8 -22 54 56 126 13 45 -22 46 13 0.18
126 36 39 -23 15 22 12 51 23.9 63 347 -41 126 54 16 -23 18 14 126 19 3 -23 12 30 127 3 26 -23 19 44 126 9 54 -23 11 0 0.18
126 32 53 -23 40 15 12 51 28.6 62 348 -41 126 50 33 -23 43 8 126 15 14 -23 37 22 126 59 46 -23 44 39 126 6 3 -23 35 53 0.18
126 29 8 -24 5 14 12 51 33.2 62 348 -41 126 46 51 -24 8 8 126 11 25 -24 2 21 126 56 6 -24 9 39 126 2 13 -24 0 51 0.18
126 25 23 -24 30 19 12 51 37.9 61 348 -40 126 43 10 -24 33 13 126 7 37 -24 27 25 126 52 26 -24 34 44 125 58 22 -24 25 55 0.18
126 21 38 -24 55 30 12 51 42.5 61 348 -40 126 39 29 -24 58 25 126 3 49 -24 52 35 126 48 47 -24 59 56 125 54 32 -24 51 4 0.19
126 17 54 -25 20 46 12 51 47.2 61 349 -40 126 35 48 -25 23 42 126 0 1 -25 17 51 126 45 8 -25 25 14 125 50 42 -25 16 20 0.19
126 14 10 -25 46 9 12 51 51.9 60 349 -39 126 32 8 -25 49 5 125 56 13 -25 43 13 126 41 30 -25 50 37 125 46 53 -25 41 42 0.19
126 10 26 -26 11 38 12 51 56.5 60 349 -39 126 28 28 -26 14 35 125 52 25 -26 8 41 126 37 52 -26 16 7 125 43 3 -26 7 9 0.19
126 6 43 -26 37 13 12 52 1.2 59 349 -39 126 24 49 -26 40 11 125 48 38 -26 34 16 126 34 15 -26 41 44 125 39 14 -26 32 44 0.19
126 3 0 -27 2 55 12 52 5.8 59 349 -38 126 21 10 -27 5 54 125 44 51 -26 59 57 126 30 38 -27 7 27 125 35 25 -26 58 25 0.19
125 59 17 -27 28 44 12 52 10.5 58 350 -38 126 17 31 -27 31 44 125 41 4 -27 25 46 126 27 2 -27 33 17 125 31 35 -27 24 13 0.19
125 55 34 -27 54 40 12 52 15.2 58 350 -38 126 13 53 -27 57 40 125 37 17 -27 51 41 126 23 26 -27 59 14 125 27 46 -27 50 8 0.19
125 51 52 -28 20 43 12 52 19.8 58 350 -38 126 10 16 -28 23 44 125 33 30 -28 17 43 126 19 51 -28 25 19 125 23 57 -28 16 9 0.19
125 48 10 -28 46 54 12 52 24.5 57 350 -37 126 6 38 -28 49 55 125 29 44 -28 43 53 126 16 16 -28 51 30 125 20 8 -28 42 19 0.19
125 44 28 -29 13 12 12 52 29.1 57 350 -37 126 3 1 -29 16 14 125 25 57 -29 10 10 126 12 41 -29 17 49 125 16 20 -29 8 35 0.19
125 40 47 -29 39 38 12 52 33.8 56 351 -37 125 59 25 -29 42 41 125 22 11 -29 36 35 126 9 7 -29 44 17 125 12 31 -29 35 0 0.19
125 37 6 -30 6 11 12 52 38.5 56 351 -36 125 55 48 -30 9 16 125 18 25 -30 3 8 126 5 33 -30 10 52 125 8 42 -30 1 32 0.19
125 33 25 -30 32 53 12 52 43.1 55 351 -36 125 52 12 -30 35 58 125 14 39 -30 29 49 126 2 0 -30 37 35 125 4 53 -30 28 13 0.19
125 29 44 -30 59 44 12 52 47.8 55 351 -36 125 48 37 -31 2 50 125 10 52 -30 56 38 125 58 27 -31 4 27 125 1 4 -30 55 2 0.19
125 26 3 -31 26 43 12 52 52.4 55 351 -35 125 45 1 -31 29 50 125 7 6 -31 23 36 125 54 55 -31 31 27 124 57 15 -31 22 0 0.19
125 22 22 -31 53 51 12 52 57.1 54 351 -35 125 41 26 -31 56 59 125 3 20 -31 50 43 125 51 23 -31 58 37 124 53 27 -31 49 6 0.19
125 18 42 -32 21 8 12 53 1.8 54 352 -35 125 37 52 -32 24 17 124 59 34 -32 17 59 125 47 51 -32 25 55 124 49 38 -32 16 22 0.19
125 15 2 -32 48 34 12 53 6.4 53 352 -34 125 34 17 -32 51 44 124 55 48 -32 45 25 125 44 20 -32 53 23 124 45 48 -32 43 47 0.19
125 11 22 -33 16 11 12 53 11.1 53 352 -34 125 30 43 -33 19 22 124 52 2 -33 13 0 125 40 49 -33 21 1 124 41 59 -33 11 21 0.19
125 7 42 -33 43 57 12 53 15.7 52 352 -34 125 27 10 -33 47 9 124 48 16 -33 40 45 125 37 19 -33 48 49 124 38 10 -33 39 6 0.19
125 4 2 -34 11 53 12 53 20.4 52 352 -33 125 23 36 -34 15 6 124 44 30 -34 8 40 125 33 49 -34 16 47 124 34 20 -34 7 0 0.19
125 0 22 -34 40 0 12 53 25.1 51 352 -33 125 20 3 -34 43 14 124 40 44 -34 36 46 125 30 19 -34 44 56 124 30 31 -34 35 6 0.19
124 56 43 -35 8 18 12 53 29.7 51 353 -33 125 16 31 -35 11 34 124 36 57 -35 5 3 125 26 50 -35 13 16 124 26 41 -35 3 22 0.19
124 53 3 -35 36 47 12 53 34.4 51 353 -32 125 12 58 -35 40 4 124 33 11 -35 33 31 125 23 21 -35 41 47 124 22 51 -35 31 49 0.19
124 49 24 -36 5 28 12 53 39.0 50 353 -32 125 9 26 -36 8 46 124 29 24 -36 2 10 125 19 53 -36 10 29 124 19 0 -36 0 27 0.19
124 45 44 -36 34 20 12 53 43.7 50 353 -32 125 5 54 -36 37 40 124 25 37 -36 31 1 125 16 25 -36 39 24 124 15 10 -36 29 18 0.19
124 42 5 -37 3 25 12 53 48.4 49 353 -31 125 2 22 -37 6 46 124 21 50 -37 0 5 125 12 57 -37 8 31 124 11 19 -36 58 21 0.19
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