|
|
Updated: 2021 Jul 15, 17:26 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 Aug 05 UT, the 154 km diameter asteroid (139) Juewa will occult a 11.8 mag star in the constellation Scorpius for observers along a path across West Australia, running from Point Dover to Port Hedland.
In the case of an occultation, the combined light of the asteroid and the star will drop by 1.47 mag to 12.89 mag (the magnitude of the asteroid) for at most 30.1 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 TYC 7869-00219-1 by 139 Juewa on 2021 Aug 5
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
139 3 40 -45 33 31 15 0 57.7 45 257 -61 137 55 20 -46 2 20 140 12 8 -45 3 49 137 19 30 -46 17 7 140 48 5 -44 47 53 -0.81
138 39 38 -45 18 48 15 1 4.8 45 257 -61 137 31 31 -45 47 23 139 47 51 -44 49 21 136 55 50 -46 2 2 140 23 41 -44 33 32 -0.81
138 15 58 -45 4 0 15 1 11.9 45 257 -62 137 8 5 -45 32 20 139 23 57 -44 34 46 136 32 32 -45 46 52 139 59 40 -44 19 5 -0.81
137 52 40 -44 49 5 15 1 19.0 45 257 -62 136 45 2 -45 17 12 139 0 25 -44 20 6 136 9 36 -45 31 37 139 36 1 -44 4 32 -0.81
137 29 44 -44 34 4 15 1 26.1 45 257 -62 136 22 20 -45 1 58 138 37 15 -44 5 19 135 47 1 -45 16 16 139 12 44 -43 49 53 -0.81
137 7 9 -44 18 58 15 1 33.2 46 257 -62 135 59 59 -44 46 39 138 14 26 -43 50 26 135 24 48 -45 0 50 138 49 48 -43 35 7 -0.81
136 44 55 -44 3 47 15 1 40.3 46 257 -63 135 38 0 -44 31 15 137 51 59 -43 35 28 135 2 56 -44 45 19 138 27 13 -43 20 16 -0.81
136 23 2 -43 48 30 15 1 47.4 46 257 -63 135 16 21 -44 15 45 137 29 52 -43 20 24 134 41 25 -44 29 43 138 4 59 -43 5 19 -0.81
129 21 24 -37 36 44 15 4 30.9 49 253 -69 128 19 47 -38 0 14 130 23 16 -37 12 29 127 47 33 -38 12 16 130 55 49 -36 59 27 -0.82
129 6 8 -37 19 49 15 4 38.0 49 253 -69 128 4 43 -37 43 11 130 7 48 -36 55 41 127 32 35 -37 55 10 130 40 15 -36 42 44 -0.82
128 51 5 -37 2 50 15 4 45.1 49 253 -69 127 49 52 -37 26 6 129 52 34 -36 38 50 127 17 51 -37 38 0 130 24 55 -36 25 57 -0.82
128 36 16 -36 45 49 15 4 52.3 49 253 -69 127 35 14 -37 8 57 129 37 32 -36 21 56 127 3 19 -37 20 48 130 9 48 -36 9 6 -0.82
128 21 39 -36 28 44 15 4 59.4 49 252 -69 127 20 48 -36 51 45 129 22 44 -36 4 58 126 49 0 -37 3 32 129 54 53 -35 52 12 -0.82
128 7 14 -36 11 36 15 5 6.5 50 252 -70 127 6 36 -36 34 31 129 8 9 -35 47 57 126 34 53 -36 46 14 129 40 12 -35 35 15 -0.82
127 53 2 -35 54 25 15 5 13.6 50 252 -70 126 52 35 -36 17 13 128 53 46 -35 30 53 126 20 58 -36 28 53 129 25 43 -35 18 14 -0.82
127 39 3 -35 37 10 15 5 20.7 50 252 -70 126 38 46 -35 59 52 128 39 35 -35 13 45 126 7 16 -36 11 29 129 11 27 -35 1 10 -0.82
127 25 15 -35 19 53 15 5 27.8 50 251 -70 126 25 10 -35 42 28 128 25 36 -34 56 34 125 53 45 -35 54 2 128 57 23 -34 44 2 -0.82
127 11 39 -35 2 32 15 5 34.9 50 251 -70 126 11 45 -35 25 2 128 11 50 -34 39 20 125 40 26 -35 36 32 128 43 31 -34 26 51 -0.82
126 58 15 -34 45 9 15 5 42.0 50 251 -71 125 58 31 -35 7 32 127 58 15 -34 22 2 125 27 18 -35 19 0 128 29 50 -34 9 37 -0.82
126 45 2 -34 27 42 15 5 49.1 50 250 -71 125 45 29 -34 50 0 127 44 52 -34 4 41 125 14 21 -35 1 24 128 16 22 -33 52 19 -0.82
126 32 0 -34 10 13 15 5 56.2 50 250 -71 125 32 38 -34 32 24 127 31 40 -33 47 18 125 1 36 -34 43 46 128 3 5 -33 34 59 -0.82
126 19 10 -33 52 40 15 6 3.3 50 250 -71 125 19 58 -34 14 46 127 18 39 -33 29 51 124 49 2 -34 26 5 127 49 59 -33 17 35 -0.82
126 6 31 -33 35 5 15 6 10.4 50 250 -71 125 7 29 -33 57 5 127 5 50 -33 12 21 124 36 38 -34 8 21 127 37 4 -33 0 7 -0.82
125 54 2 -33 17 26 15 6 17.6 50 249 -72 124 55 10 -33 39 22 126 53 11 -32 54 47 124 24 25 -33 50 35 127 24 21 -32 42 37 -0.83
125 41 44 -32 59 44 15 6 24.7 50 249 -72 124 43 2 -33 21 35 126 40 44 -32 37 11 124 12 22 -33 32 45 127 11 48 -32 25 4 -0.83
125 29 36 -32 42 0 15 6 31.8 50 249 -72 124 31 4 -33 3 45 126 28 26 -32 19 32 124 0 29 -33 14 53 126 59 26 -32 7 27 -0.83
125 17 39 -32 24 13 15 6 38.9 50 248 -72 124 19 17 -32 45 53 126 16 20 -32 1 49 123 48 47 -32 56 59 126 47 14 -31 49 47 -0.83
125 5 52 -32 6 22 15 6 46.0 50 248 -72 124 7 39 -32 27 58 126 4 23 -31 44 4 123 37 15 -32 39 1 126 35 13 -31 32 4 -0.83
124 54 15 -31 48 29 15 6 53.1 50 248 -72 123 56 12 -32 10 0 125 52 37 -31 26 15 123 25 52 -32 21 1 126 23 22 -31 14 18 -0.83
124 42 48 -31 30 33 15 7 0.2 50 247 -73 123 44 54 -31 52 0 125 41 1 -31 8 23 123 14 39 -32 2 58 126 11 41 -30 56 28 -0.83
124 31 31 -31 12 34 15 7 7.3 50 247 -73 123 33 46 -31 33 57 125 29 35 -30 50 29 123 3 36 -31 44 53 126 0 10 -30 38 36 -0.83
124 20 23 -30 54 32 15 7 14.4 50 247 -73 123 22 47 -31 15 50 125 18 18 -30 32 31 122 52 42 -31 26 44 125 48 49 -30 20 41 -0.83
124 9 25 -30 36 27 15 7 21.5 50 247 -73 123 11 58 -30 57 41 125 7 11 -30 14 30 122 41 57 -31 8 33 125 37 38 -30 2 42 -0.83
123 58 36 -30 18 19 15 7 28.6 50 246 -73 123 1 18 -30 39 30 124 56 14 -29 56 26 122 31 22 -30 50 20 125 26 36 -29 44 40 -0.83
123 47 56 -30 0 8 15 7 35.7 50 246 -73 122 50 47 -30 21 15 124 45 26 -29 38 19 122 20 55 -30 32 3 125 15 44 -29 26 35 -0.83
123 37 26 -29 41 55 15 7 42.9 50 246 -74 122 40 25 -30 2 58 124 34 47 -29 20 9 122 10 38 -30 13 44 125 5 1 -29 8 27 -0.83
123 27 5 -29 23 38 15 7 50.0 50 245 -74 122 30 12 -29 44 38 124 24 18 -29 1 56 122 0 29 -29 55 22 124 54 27 -28 50 16 -0.83
123 16 52 -29 5 18 15 7 57.1 50 245 -74 122 20 7 -29 26 15 124 13 58 -28 43 40 121 50 29 -29 36 57 124 44 3 -28 32 1 -0.83
123 6 49 -28 46 56 15 8 4.2 50 245 -74 122 10 12 -29 7 49 124 3 46 -28 25 21 121 40 38 -29 18 30 124 33 47 -28 13 44 -0.83
122 56 54 -28 28 30 15 8 11.3 50 244 -74 122 0 25 -28 49 20 123 53 44 -28 6 58 121 30 55 -28 59 59 124 23 41 -27 55 23 -0.84
122 47 7 -28 10 2 15 8 18.4 50 244 -74 121 50 46 -28 30 49 123 43 50 -27 48 33 121 21 21 -28 41 26 124 13 43 -27 36 59 -0.84
122 37 30 -27 51 30 15 8 25.5 50 244 -74 121 41 16 -28 12 14 123 34 5 -27 30 4 121 11 55 -28 22 50 124 3 54 -27 18 32 -0.84
122 28 0 -27 32 56 15 8 32.6 50 243 -75 121 31 54 -27 53 37 123 24 28 -27 11 32 121 2 37 -28 4 12 123 54 14 -27 0 2 -0.84
122 18 39 -27 14 18 15 8 39.7 50 243 -75 121 22 40 -27 34 57 123 15 0 -26 52 58 120 53 27 -27 45 30 123 44 42 -26 41 29 -0.84
122 9 26 -26 55 38 15 8 46.8 50 243 -75 121 13 34 -27 16 14 123 5 40 -26 34 19 120 44 25 -27 26 46 123 35 19 -26 22 52 -0.84
122 0 21 -26 36 54 15 8 53.9 50 242 -75 121 4 37 -26 57 28 122 56 28 -26 15 38 120 35 31 -27 7 58 123 26 4 -26 4 12 -0.84
121 51 25 -26 18 7 15 9 1.0 50 242 -75 120 55 47 -26 38 39 122 47 25 -25 56 54 120 26 45 -26 49 8 123 16 57 -25 45 29 -0.84
121 42 36 -25 59 17 15 9 8.1 50 242 -75 120 47 5 -26 19 47 122 38 30 -25 38 6 120 18 6 -26 30 15 123 7 58 -25 26 42 -0.84
121 33 55 -25 40 24 15 9 15.3 50 241 -75 120 38 31 -26 0 51 122 29 43 -25 19 15 120 9 36 -26 11 19 122 59 8 -25 7 52 -0.84
121 25 22 -25 21 28 15 9 22.4 50 241 -75 120 30 4 -25 41 53 122 21 3 -25 0 21 120 1 12 -25 52 20 122 50 26 -24 48 59 -0.84
121 16 57 -25 2 29 15 9 29.5 50 241 -75 120 21 45 -25 22 52 122 12 32 -24 41 23 119 52 57 -25 33 18 122 41 51 -24 30 2 -0.84
121 8 39 -24 43 26 15 9 36.6 50 240 -75 120 13 33 -25 3 48 122 4 8 -24 22 22 119 44 49 -25 14 12 122 33 24 -24 11 2 -0.84
121 0 29 -24 24 20 15 9 43.7 49 240 -76 120 5 29 -24 44 41 121 55 53 -24 3 18 119 36 48 -24 55 4 122 25 6 -23 51 59 -0.84
120 52 27 -24 5 11 15 9 50.8 49 240 -76 119 57 33 -24 25 30 121 47 44 -23 44 10 119 28 54 -24 35 53 122 16 55 -23 32 52 -0.85
120 44 32 -23 45 59 15 9 57.9 49 239 -76 119 49 43 -24 6 16 121 39 44 -23 24 59 119 21 8 -24 16 38 122 8 51 -23 13 41 -0.85
120 36 44 -23 26 43 15 10 5.0 49 239 -76 119 42 1 -23 46 59 121 31 51 -23 5 45 119 13 29 -23 57 21 122 0 56 -22 54 27 -0.85
120 29 4 -23 7 24 15 10 12.1 49 239 -76 119 34 26 -23 27 39 121 24 5 -22 46 27 119 5 57 -23 38 0 121 53 8 -22 35 10 -0.85
120 21 31 -22 48 2 15 10 19.2 49 238 -76 119 26 59 -23 8 16 121 16 27 -22 27 5 118 58 32 -23 18 36 121 45 27 -22 15 48 -0.85
120 14 5 -22 28 36 15 10 26.3 49 238 -76 119 19 38 -22 48 49 121 8 57 -22 7 40 118 51 14 -22 59 9 121 37 54 -21 56 24 -0.85
120 6 46 -22 9 6 15 10 33.4 49 238 -76 119 12 24 -22 29 19 121 1 33 -21 48 11 118 44 3 -22 39 38 121 30 28 -21 36 55 -0.85
119 59 35 -21 49 33 15 10 40.6 49 237 -76 119 5 17 -22 9 45 120 54 17 -21 28 38 118 36 59 -22 20 4 121 23 10 -21 17 23 -0.85
119 52 30 -21 29 57 15 10 47.7 49 237 -76 118 58 18 -21 50 8 120 47 9 -21 9 2 118 30 2 -22 0 27 121 15 59 -20 57 47 -0.85
119 45 33 -21 10 16 15 10 54.8 49 237 -76 118 51 25 -21 30 27 120 40 7 -20 49 22 118 23 11 -21 40 46 121 8 55 -20 38 7 -0.85
119 38 42 -20 50 32 15 11 1.9 48 236 -76 118 44 39 -21 10 43 120 33 13 -20 29 39 118 16 27 -21 21 2 121 1 59 -20 18 23 -0.85
119 31 59 -20 30 45 15 11 9.0 48 236 -76 118 37 59 -20 50 56 120 26 25 -20 9 51 118 9 50 -21 1 14 120 55 10 -19 58 36 -0.85
119 25 22 -20 10 53 15 11 16.1 48 236 -76 118 31 27 -20 31 4 120 19 45 -19 49 59 118 3 20 -20 41 23 120 48 27 -19 38 44 -0.86
119 18 53 -19 50 58 15 11 23.2 48 235 -76 118 25 1 -20 11 9 120 13 12 -19 30 4 117 56 56 -20 21 27 120 41 52 -19 18 48 -0.86
119 12 30 -19 30 59 15 11 30.3 48 235 -76 118 18 42 -19 51 10 120 6 45 -19 10 5 117 50 39 -20 1 29 120 35 25 -18 58 49 -0.86
119 6 14 -19 10 56 15 11 37.4 48 235 -76 118 12 29 -19 31 8 120 0 26 -18 50 1 117 44 29 -19 41 26 120 29 4 -18 38 45 -0.86
119 0 5 -18 50 49 15 11 44.5 48 234 -76 118 6 24 -19 11 1 119 54 14 -18 29 53 117 38 25 -19 21 20 120 22 50 -18 18 37 -0.86
118 54 2 -18 30 38 15 11 51.6 48 234 -76 118 0 24 -18 50 51 119 48 9 -18 9 41 117 32 27 -19 1 10 120 16 43 -17 58 24 -0.86
118 48 7 -18 10 23 15 11 58.7 47 234 -76 117 54 32 -18 30 37 119 42 10 -17 49 25 117 26 36 -18 40 56 120 10 44 -17 38 8 -0.86
118 42 18 -17 50 4 15 12 5.9 47 233 -76 117 48 46 -18 10 18 119 36 19 -17 29 5 117 20 52 -18 20 38 120 4 51 -17 17 46 -0.86
118 36 35 -17 29 40 15 12 13.0 47 233 -76 117 43 6 -17 49 56 119 30 34 -17 8 40 117 15 14 -18 0 16 119 59 5 -16 57 21 -0.86
Use these links for further information:
[Planetary Occultations]
[Using the Predictions]
[Observing Details]
[Timing Details]
[Reporting Details]
[Report Form]
[Asteroid Occultation Results]
[Top of Page][Return to Home Page]