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Updated: 2022 FEB 14, 19:22 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 Mar 07 UT, the 81.7 km diameter asteroid (61) Danae will occult a 10.7 mag star in the constellation Auriga for observers along a path across Western Australia from near Esperance across central Western Australia to near Port Headland, in late evening twilight.
In the case of an occultation, the combined light of the asteroid and the star will drop by 2.71 mag to 13.28 mag (the magnitude of the asteroid) for at most 8.110 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 TYC 2447-00344-1 by 61 Danae on 2022 Mar 7
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
116 34 18 - 1 25 32 11 13 45.4 51 14 -12 116 55 46 - 1 14 15 116 12 47 - 1 36 56 117 6 57 - 1 8 25 116 1 34 - 1 42 57 0.36
116 39 39 - 1 51 15 11 13 49.4 50 13 -12 117 1 8 - 1 39 56 116 18 8 - 2 2 42 117 12 19 - 1 34 5 116 6 54 - 2 8 44 0.35
116 44 58 - 2 17 9 11 13 53.4 50 13 -12 117 6 28 - 2 5 48 116 23 26 - 2 28 39 117 17 39 - 1 59 56 116 12 12 - 2 34 41 0.35
116 50 15 - 2 43 13 11 13 57.4 49 13 -12 117 11 46 - 2 31 49 116 28 42 - 2 54 45 117 22 58 - 2 25 56 116 17 27 - 3 0 49 0.35
116 55 30 - 3 9 27 11 14 1.4 49 13 -12 117 17 2 - 2 58 1 116 33 56 - 3 21 2 117 28 14 - 2 52 7 116 22 40 - 3 27 8 0.35
117 0 43 - 3 35 53 11 14 5.4 49 13 -12 117 22 15 - 3 24 24 116 39 8 - 3 47 30 117 33 28 - 3 18 28 116 27 51 - 3 53 37 0.35
117 5 53 - 4 2 29 11 14 9.4 48 12 -12 117 27 27 - 3 50 57 116 44 17 - 4 14 9 117 38 41 - 3 45 0 116 33 0 - 4 20 18 0.35
117 11 2 - 4 29 16 11 14 13.4 48 12 -12 117 32 37 - 4 17 42 116 49 24 - 4 41 0 117 43 51 - 4 11 43 116 38 7 - 4 47 10 0.35
117 16 8 - 4 56 16 11 14 17.4 47 12 -13 117 37 45 - 4 44 38 116 54 29 - 5 8 2 117 48 59 - 4 38 38 116 43 11 - 5 14 14 0.35
117 21 13 - 5 23 27 11 14 21.4 47 12 -13 117 42 51 - 5 11 47 116 59 32 - 5 35 17 117 54 6 - 5 5 45 116 48 13 - 5 41 30 0.35
117 26 15 - 5 50 51 11 14 25.4 47 11 -13 117 47 54 - 5 39 7 117 4 33 - 6 2 44 117 59 11 - 5 33 4 116 53 13 - 6 8 59 0.35
117 31 16 - 6 18 28 11 14 29.4 46 11 -13 117 52 56 - 6 6 40 117 9 32 - 6 30 24 118 4 13 - 6 0 35 116 58 11 - 6 36 41 0.35
117 36 14 - 6 46 17 11 14 33.4 46 11 -13 117 57 57 - 6 34 27 117 14 29 - 6 58 17 118 9 14 - 6 28 20 117 3 7 - 7 4 37 0.35
117 41 11 - 7 14 21 11 14 37.4 45 11 -13 118 2 55 - 7 2 26 117 19 23 - 7 26 25 118 14 13 - 6 56 17 117 8 0 - 7 32 46 0.35
117 46 5 - 7 42 38 11 14 41.4 45 11 -13 118 7 51 - 7 30 40 117 24 16 - 7 54 46 118 19 11 - 7 24 29 117 12 52 - 8 1 9 0.35
117 50 58 - 8 11 10 11 14 45.4 44 10 -13 118 12 46 - 7 59 7 117 29 6 - 8 23 22 118 24 6 - 7 52 55 117 17 41 - 8 29 47 0.35
117 55 48 - 8 39 56 11 14 49.4 44 10 -13 118 17 38 - 8 27 50 117 33 55 - 8 52 13 118 29 0 - 8 21 35 117 22 28 - 8 58 41 0.35
118 0 37 - 9 8 59 11 14 53.5 43 10 -13 118 22 29 - 8 56 48 117 38 41 - 9 21 19 118 33 52 - 8 50 30 117 27 14 - 9 27 50 0.35
118 5 24 - 9 38 17 11 14 57.5 43 10 -13 118 27 18 - 9 26 1 117 43 25 - 9 50 42 118 38 43 - 9 19 41 117 31 57 - 9 57 15 0.35
118 10 9 -10 7 51 11 15 1.5 43 10 -13 118 32 6 - 9 55 31 117 48 8 -10 20 22 118 43 31 - 9 49 9 117 36 37 -10 26 57 0.35
118 14 52 -10 37 42 11 15 5.5 42 10 -13 118 36 51 -10 25 17 117 52 48 -10 50 18 118 48 18 -10 18 53 117 41 16 -10 56 57 0.35
118 19 33 -11 7 52 11 15 9.5 42 9 -13 118 41 35 -10 55 21 117 57 26 -11 20 33 118 53 3 -10 48 54 117 45 53 -11 27 14 0.35
118 24 12 -11 38 19 11 15 13.5 41 9 -13 118 46 17 -11 25 43 118 2 2 -11 51 6 118 57 47 -11 19 13 117 50 27 -11 57 50 0.35
118 28 49 -12 9 6 11 15 17.5 41 9 -13 118 50 57 -11 56 24 118 6 36 -12 21 59 119 2 29 -11 49 51 117 55 0 -12 28 46 0.35
118 33 24 -12 40 12 11 15 21.5 40 9 -13 118 55 36 -12 27 24 118 11 8 -12 53 11 119 7 9 -12 20 48 117 59 30 -13 0 2 0.35
118 37 58 -13 11 39 11 15 25.5 40 9 -13 119 0 13 -12 58 44 118 15 38 -13 24 44 119 11 47 -12 52 5 118 3 58 -13 31 39 0.35
118 42 29 -13 43 27 11 15 29.5 39 9 -13 119 4 48 -13 30 26 118 20 6 -13 56 39 119 16 24 -13 23 43 118 8 24 -14 3 37 0.35
118 46 59 -14 15 37 11 15 33.5 39 8 -13 119 9 21 -14 2 29 118 24 32 -14 28 57 119 20 59 -13 55 43 118 12 47 -14 35 59 0.35
118 51 26 -14 48 10 11 15 37.5 38 8 -13 119 13 53 -14 34 55 118 28 55 -15 1 38 119 25 33 -14 28 5 118 17 9 -15 8 44 0.35
118 55 52 -15 21 8 11 15 41.5 38 8 -13 119 18 22 -15 7 45 118 33 16 -15 34 43 119 30 5 -15 0 51 118 21 28 -15 41 54 0.35
119 0 16 -15 54 31 11 15 45.5 37 8 -13 119 22 50 -15 41 0 118 37 36 -16 8 15 119 34 35 -15 34 2 118 25 44 -16 15 29 0.35
119 4 37 -16 28 20 11 15 49.5 36 8 -13 119 27 17 -16 14 40 118 41 52 -16 42 13 119 39 3 -16 7 38 118 29 59 -16 49 32 0.35
119 8 57 -17 2 37 11 15 53.5 36 8 -13 119 31 41 -16 48 48 118 46 7 -17 16 39 119 43 30 -16 41 42 118 34 11 -17 24 3 0.35
119 13 14 -17 37 22 11 15 57.5 35 7 -13 119 36 3 -17 23 25 118 50 19 -17 51 34 119 47 55 -17 16 13 118 38 20 -17 59 4 0.35
119 17 29 -18 12 39 11 16 1.5 35 7 -13 119 40 24 -17 58 31 118 54 29 -18 27 1 119 52 18 -17 51 14 118 42 27 -18 34 36 0.35
119 21 42 -18 48 27 11 16 5.5 34 7 -13 119 44 43 -18 34 8 118 58 36 -19 3 0 119 56 40 -18 26 46 118 46 31 -19 10 41 0.35
119 25 53 -19 24 48 11 16 9.5 34 7 -13 119 48 59 -19 10 19 119 2 41 -19 39 34 120 0 59 -19 2 51 118 50 32 -19 47 21 0.35
119 30 2 -20 1 46 11 16 13.5 33 7 -13 119 53 14 -19 47 4 119 6 42 -20 16 43 120 5 17 -19 39 30 118 54 30 -20 24 37 0.35
119 34 7 -20 39 21 11 16 17.5 32 7 -13 119 57 26 -20 24 26 119 10 42 -20 54 31 120 9 33 -20 16 46 118 58 26 -21 2 33 0.35
119 38 11 -21 17 35 11 16 21.5 32 7 -13 120 1 37 -21 2 27 119 14 38 -21 33 0 120 13 47 -20 54 40 119 2 18 -21 41 9 0.35
119 42 11 -21 56 32 11 16 25.5 31 7 -13 120 5 45 -21 41 9 119 18 31 -22 12 12 120 17 59 -21 33 15 119 6 7 -22 20 29 0.35
119 46 9 -22 36 13 11 16 29.5 30 6 -13 120 9 50 -22 20 35 119 22 20 -22 52 10 120 22 8 -22 12 33 119 9 52 -23 0 36 0.35
119 50 4 -23 16 43 11 16 33.5 30 6 -13 120 13 53 -23 0 48 119 26 6 -23 32 57 120 26 15 -22 52 38 119 13 33 -23 41 32 0.35
119 53 56 -23 58 4 11 16 37.5 29 6 -13 120 17 54 -23 41 51 119 29 49 -24 14 36 120 30 20 -23 33 32 119 17 11 -24 23 21 0.35
119 57 44 -24 40 19 11 16 41.5 28 6 -13 120 21 52 -24 23 47 119 33 27 -24 57 12 120 34 23 -24 15 18 119 20 44 -25 6 8 0.35
120 1 29 -25 23 34 11 16 45.5 28 6 -13 120 25 46 -25 6 41 119 37 1 -25 40 48 120 38 22 -24 58 1 119 24 12 -25 49 56 0.35
120 5 9 -26 7 52 11 16 49.5 27 6 -12 120 29 37 -25 50 36 119 40 30 -26 25 30 120 42 19 -25 41 45 119 27 35 -26 34 51 0.35
120 8 45 -26 53 19 11 16 53.5 26 6 -12 120 33 25 -26 35 39 119 43 54 -27 11 24 120 46 12 -26 26 35 119 30 53 -27 20 59 0.35
120 12 17 -27 40 2 11 16 57.5 26 6 -12 120 37 9 -27 21 54 119 47 13 -27 58 35 120 50 2 -27 12 37 119 34 4 -28 8 26 0.35
120 15 42 -28 28 7 11 17 1.5 25 6 -12 120 40 48 -28 9 30 119 50 24 -28 47 12 120 53 48 -27 59 57 119 37 8 -28 57 20 0.35
120 19 2 -29 17 42 11 17 5.5 24 5 -12 120 44 22 -28 58 32 119 53 29 -29 37 22 120 57 30 -28 48 43 119 40 4 -29 47 50 0.35
120 22 16 -30 8 58 11 17 9.5 23 5 -12 120 47 51 -29 49 11 119 56 25 -30 29 18 121 1 6 -29 39 4 119 42 51 -30 40 7 0.35
120 25 21 -31 2 6 11 17 13.5 22 5 -12 120 51 14 -30 41 37 119 59 12 -31 23 10 121 4 38 -30 31 10 119 45 28 -31 34 23 0.35
120 28 17 -31 57 20 11 17 17.5 21 5 -12 120 54 29 -31 36 4 120 1 48 -32 19 14 121 8 2 -31 25 13 119 47 53 -32 30 55 0.35
120 31 3 -32 54 57 11 17 21.5 20 5 -11 120 57 36 -32 32 47 120 4 11 -33 17 49 121 11 20 -32 21 30 119 50 3 -33 30 2 0.35
120 33 36 -33 55 18 11 17 25.5 19 5 -11 121 0 33 -33 32 6 120 6 19 -34 19 17 121 14 28 -33 20 18 119 51 57 -34 32 8 0.35
120 35 54 -34 58 51 11 17 29.6 18 5 -11 121 3 17 -34 34 25 120 8 8 -35 24 10 121 17 25 -34 22 1 119 53 30 -35 37 45 0.35
120 37 53 -36 6 10 11 17 33.6 17 5 -11 121 5 47 -35 40 16 120 9 33 -36 33 6 121 20 9 -35 27 10 119 54 36 -36 47 35 0.35
120 39 28 -37 18 4 11 17 37.6 16 5 -10 121 7 57 -36 50 23 120 10 29 -37 47 0 121 22 37 -36 36 24 119 55 9 -38 2 37 0.35
120 40 31 -38 35 41 11 17 41.6 15 5 -10 121 9 43 -38 5 44 120 10 44 -39 7 10 121 24 43 -37 50 39 119 54 57 -39 24 15 0.36
Uncertainty in time = +/- 3 secs
Prediction of 2022 Feb 14.8
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