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Updated: 2020 MAR 29, 19:52 UT
Event Rank : 98
(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 2020 May 16 UT, the 112.3 km diameter asteroid (490) Veritas will occult a 10.8 mag star in the constellation Aquila for observers along a path across Australia, from Mt Gambier and Adelaide (in morning twilight) across South Australia and eastern Western Australia to near Derby.
In the case of an occultation, the combined light of the asteroid and the star will drop by 2.94 mag to 13.65 mag (the magnitude of the asteroid) for at most 29.5 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, 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 5713-00112-1 by 490 Veritas on 2020 May 16
Centre Star Star Sun Path Limits Error Limits Alt
E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn
o ' " o ' " h m s o o o o ' " o ' " o ' " o ' "
Longitude Longitude Longitude Longitude
114 0 29 0 0 0 21 17 58.6 69 240 -15 114 35 57 113 25 10 115 0 42 113 0 40 -0.38
114 27 14 - 1 0 0 21 17 28.2 69 243 -15 115 2 46 113 51 49 115 27 35 113 27 16 -0.37
114 54 27 - 2 0 0 21 16 57.7 70 245 -15 115 30 6 114 18 57 115 54 58 113 54 20 -0.37
115 22 10 - 3 0 0 21 16 27.1 70 248 -15 115 57 56 114 46 34 116 22 53 114 21 53 -0.37
115 50 24 - 4 0 0 21 15 56.4 70 251 -15 116 26 17 115 14 41 116 51 20 114 49 54 -0.37
116 19 10 - 5 0 0 21 15 25.6 70 254 -15 116 55 11 115 43 18 117 20 20 115 18 26 -0.37
116 48 28 - 6 0 0 21 14 54.8 70 257 -15 117 24 38 116 12 27 117 49 54 115 47 29 -0.36
117 18 20 - 7 0 0 21 14 23.9 69 259 -15 117 54 41 116 42 9 118 20 4 116 17 4 -0.36
117 48 47 - 8 0 0 21 13 53.0 69 262 -15 118 25 19 117 12 25 118 50 50 116 47 13 -0.36
Latitude Latitude Latitude Latitude
118 0 0 - 8 21 48 21 13 41.7 69 263 -15 - 7 10 30 - 9 32 2 - 6 20 14 -10 20 18 -0.36
119 0 0 -10 15 50 21 12 42.8 69 268 -15 - 9 6 30 -11 24 14 - 8 17 39 -12 11 17 -0.36
120 0 0 -12 5 36 21 11 45.9 68 272 -14 -10 58 4 -13 12 16 -10 10 32 -13 58 11 -0.35
121 0 0 -13 51 16 21 10 51.2 67 276 -14 -12 45 25 -14 56 19 -11 59 7 -15 41 10 -0.35
122 0 0 -15 32 58 21 9 58.5 66 280 -14 -14 28 42 -16 36 31 -13 43 33 -17 20 21 -0.35
123 0 0 -17 10 53 21 9 7.9 65 283 -14 -16 8 6 -18 13 0 -15 24 1 -18 55 52 -0.34
124 0 0 -18 45 7 21 8 19.2 64 285 -13 -17 43 45 -19 45 54 -17 0 41 -20 27 51 -0.34
125 0 0 -20 15 50 21 7 32.4 63 287 -13 -19 15 47 -21 15 20 -18 33 40 -21 56 25 -0.34
126 0 0 -21 43 9 21 6 47.5 61 289 -13 -20 44 21 -22 41 25 -20 3 9 -23 21 41 -0.34
127 0 0 -23 7 10 21 6 4.3 60 291 -12 -22 9 35 -24 4 17 -21 29 13 -24 43 46 -0.33
128 0 0 -24 28 1 21 5 23.0 59 292 -12 -23 31 35 -25 24 2 -22 52 2 -26 2 45 -0.33
129 0 0 -25 45 49 21 4 43.3 58 293 -12 -24 50 28 -26 40 46 -24 11 42 -27 18 46 -0.33
130 0 0 -27 0 40 21 4 5.3 57 294 -11 -26 6 21 -27 54 36 -25 28 20 -28 31 55 -0.33
131 0 0 -28 12 41 21 3 28.9 55 295 -11 -27 19 22 -29 5 38 -26 42 3 -29 42 17 -0.33
132 0 0 -29 21 57 21 2 54.0 54 295 -10 -28 29 35 -30 13 58 -27 52 57 -30 49 58 -0.33
133 0 0 -30 28 34 21 2 20.5 53 296 -10 -29 37 8 -31 19 42 -29 1 9 -31 55 5 -0.33
134 0 0 -31 32 39 21 1 48.5 52 296 -10 -30 42 5 -32 22 55 -30 6 44 -32 57 42 -0.33
135 0 0 -32 34 16 21 1 17.7 51 297 -9 -31 44 34 -33 23 42 -31 9 48 -33 57 56 -0.33
136 0 0 -33 33 32 21 0 48.3 50 297 -9 -32 44 38 -34 22 10 -32 10 27 -34 55 50 -0.33
137 0 0 -34 30 31 21 0 20.1 49 297 -8 -33 42 24 -35 18 22 -33 8 46 -35 51 31 -0.33
138 0 0 -35 25 18 20 59 53.1 48 297 -8 -34 37 56 -36 12 25 -34 4 50 -36 45 3 -0.33
139 0 0 -36 17 58 20 59 27.3 47 297 -8 -35 31 20 -37 4 22 -34 58 44 -37 36 31 -0.33
140 0 0 -37 8 36 20 59 2.5 46 297 -7 -36 22 39 -37 54 19 -35 50 33 -38 25 59 -0.33
141 0 0 -37 57 16 20 58 38.7 45 297 -7 -37 12 0 -38 42 19 -36 40 22 -39 13 32 -0.33
142 0 0 -38 44 3 20 58 15.9 44 296 -6 -37 59 26 -39 28 28 -37 28 15 -39 59 14 -0.33
143 0 0 -39 29 1 20 57 54.1 43 296 -6 -38 45 1 -40 12 49 -38 14 17 -40 43 10 -0.33
144 0 0 -40 12 13 20 57 33.1 42 296 -6 -39 28 49 -40 55 25 -38 58 30 -41 25 22 -0.33
145 0 0 -40 53 44 20 57 13.0 41 296 -5 -40 10 55 -41 36 22 -39 41 0 -42 5 55 -0.33
146 0 0 -41 33 37 20 56 53.8 40 295 -5 -40 51 21 -42 15 42 -40 21 50 -42 44 53 -0.33
147 0 0 -42 11 56 20 56 35.3 39 295 -4 -41 30 12 -42 53 29 -41 1 4 -43 22 18 -0.33
148 0 0 -42 48 44 20 56 17.5 38 294 -4 -42 7 31 -43 29 47 -41 38 44 -43 58 14 -0.33
149 0 0 -43 24 5 20 56 0.5 37 294 -4 -42 43 21 -44 4 38 -42 14 55 -44 32 45 -0.33
150 0 0 -43 58 1 20 55 44.1 36 294 -3 -43 17 46 -44 38 6 -42 49 40 -45 5 53 -0.33
151 0 0 -44 30 35 20 55 28.4 35 293 -3 -43 50 47 -45 10 13 -43 23 1 -45 37 41 -0.33
152 0 0 -45 1 50 20 55 13.2 35 293 -2 -44 22 29 -45 41 2 -43 55 1 -46 8 13 -0.33
153 0 0 -45 31 49 20 54 58.7 34 292 -2 -44 52 54 -46 10 36 -44 25 43 -46 37 29 -0.33
154 0 0 -46 0 35 20 54 44.8 33 292 -2 -45 22 4 -46 38 58 -44 55 11 -47 5 34 -0.34
155 0 0 -46 28 10 20 54 31.3 32 291 -1 -45 50 2 -47 6 9 -45 23 25 -47 32 29 -0.34
156 0 0 -46 54 35 20 54 18.4 32 290 -1 -46 16 50 -47 32 12 -45 50 29 -47 58 17 -0.34
157 0 0 -47 19 54 20 54 6.0 31 290 -1 -46 42 30 -47 57 10 -46 16 24 -48 23 0 -0.34
158 0 0 -47 44 9 20 53 54.0 30 289 0 -47 7 6 -48 21 4 -46 41 14 -48 46 40 -0.34
159 0 0 -48 7 21 20 53 42.5 29 289 0 -47 30 37 -48 43 56 -47 4 59 -49 9 19 -0.34
160 0 0 -48 29 32 20 53 31.5 29 288 1 -47 53 7 -49 5 49 -47 27 43 -49 30 58 -0.34
161 0 0 -48 50 44 20 53 20.8 28 287 1 -48 14 38 -49 26 43 -47 49 26 -49 51 40 -0.34
162 0 0 -49 11 0 20 53 10.6 27 287 1 -48 35 10 -49 46 41 -48 10 10 -50 11 27 -0.34
163 0 0 -49 30 19 20 53 0.7 26 286 2 -48 54 46 -50 5 44 -48 29 58 -50 30 18 -0.34
164 0 0 -49 48 45 20 52 51.1 26 285 2 -49 13 28 -50 23 54 -48 48 50 -50 48 17 -0.35
165 0 0 -50 6 18 20 52 42.0 25 285 2 -49 31 15 -50 41 12 -49 6 49 -51 5 25 -0.35
166 0 0 -50 22 59 20 52 33.1 24 284 3 -49 48 11 -50 57 40 -49 23 55 -51 21 43 -0.35
Uncertainty in time = +/- 10 secs
Prediction of 2020 Mar 29.0
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