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Updated: 2022 Feb 14, 19:32 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 Apr 03 UT, the 86 km diameter asteroid (103) Hera will occult a 11.9 mag star in the constellation Virgo for observers along a path across New Zealand, passing over Nelson and Blenheim, then across north-eastern New South Wales, south-western Queensland, Northern Territory and West Australia, passing over Port Macquarie and Kempsey and near Tamworth.
In the case of an occultation, the combined light of the asteroid and the star will drop by only 0.6 mag to 11.52 mag (the magnitude of the asteroid) for at most 6.8 seconds. This event will be difficult to observe 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 UCAC4 463-050377 by 103 Hera on 2022 Apr 3
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
176 22 41 -43 2 41 10 43 7.8 40 30 -47 175 55 14 -43 32 45 176 49 24 -42 32 53 175 51 43 -43 36 34 176 52 43 -42 29 8 1.17
176 3 10 -42 51 43 10 43 10.4 40 31 -47 175 35 40 -43 21 41 176 29 56 -42 22 0 175 32 8 -43 25 30 176 33 16 -42 18 16 1.17
175 43 42 -42 40 47 10 43 13.0 40 31 -47 175 16 7 -43 10 41 176 10 31 -42 11 10 175 12 35 -43 14 28 176 13 51 -42 7 27 1.17
175 24 15 -42 29 54 10 43 15.5 40 32 -47 174 56 37 -42 59 42 175 51 8 -42 0 22 174 53 5 -43 3 29 175 54 29 -41 56 39 1.17
175 4 51 -42 19 3 10 43 18.1 40 32 -47 174 37 9 -42 48 46 175 31 48 -41 49 36 174 33 37 -42 52 32 175 35 9 -41 45 54 1.17
174 45 28 -42 8 15 10 43 20.7 40 32 -47 174 17 43 -42 37 53 175 12 29 -41 38 53 174 14 10 -42 41 38 175 15 50 -41 35 11 1.17
174 26 7 -41 57 29 10 43 23.2 40 33 -47 173 58 19 -42 27 1 174 53 11 -41 28 11 173 54 45 -42 30 46 174 56 33 -41 24 31 1.17
174 6 48 -41 46 45 10 43 25.8 40 33 -47 173 38 56 -42 16 13 174 33 56 -41 17 32 173 35 22 -42 19 57 174 37 18 -41 13 52 1.17
173 47 31 -41 36 3 10 43 28.4 40 34 -47 173 19 35 -42 5 26 174 14 42 -41 6 56 173 16 1 -42 9 10 174 18 4 -41 3 16 1.17
173 28 14 -41 25 24 10 43 30.9 41 34 -47 173 0 16 -41 54 42 173 55 29 -40 56 21 172 56 41 -41 58 25 173 58 52 -40 52 42 1.17
173 9 0 -41 14 47 10 43 33.5 41 35 -47 172 40 57 -41 44 0 173 36 18 -40 45 48 172 37 22 -41 47 42 173 39 41 -40 42 10 1.17
172 49 46 -41 4 12 10 43 36.1 41 35 -47 172 21 40 -41 33 20 173 17 8 -40 35 18 172 18 4 -41 37 2 173 20 32 -40 31 40 1.17
172 30 34 -40 53 39 10 43 38.6 41 36 -47 172 2 24 -41 22 43 172 57 59 -40 24 50 171 58 48 -41 26 24 173 1 23 -40 21 13 1.17
172 11 22 -40 43 8 10 43 41.2 41 36 -47 171 43 10 -41 12 7 172 38 51 -40 14 24 171 39 33 -41 15 48 172 42 16 -40 10 47 1.17
171 52 12 -40 32 40 10 43 43.8 41 37 -47 171 23 56 -41 1 34 172 19 44 -40 3 59 171 20 18 -41 5 14 172 23 10 -40 0 23 1.17
171 33 3 -40 22 13 10 43 46.3 41 37 -47 171 4 43 -40 51 3 172 0 38 -39 53 37 171 1 5 -40 54 43 172 4 4 -39 50 2 1.17
155 17 19 -32 18 13 10 45 54.7 37 58 -41 154 44 42 -32 44 20 155 49 4 -31 52 15 154 40 31 -32 47 38 155 53 1 -31 48 59 1.16
154 56 40 -32 9 12 10 45 57.2 36 58 -41 154 23 55 -32 35 17 155 28 33 -31 43 16 154 19 43 -32 38 35 155 32 30 -31 40 1 1.16
154 35 56 -32 0 13 10 45 59.8 36 59 -41 154 3 3 -32 26 16 155 7 57 -31 34 19 153 58 50 -32 29 34 155 11 56 -31 31 4 1.16
154 15 7 -31 51 15 10 46 2.4 36 59 -40 153 42 5 -32 17 16 154 47 16 -31 25 23 153 37 51 -32 20 33 154 51 16 -31 22 8 1.16
153 54 14 -31 42 19 10 46 4.9 36 60 -40 153 21 3 -32 8 17 154 26 31 -31 16 29 153 16 48 -32 11 35 154 30 32 -31 13 14 1.16
153 33 14 -31 33 24 10 46 7.5 36 60 -40 152 59 55 -31 59 20 154 5 40 -31 7 36 152 55 38 -32 2 37 154 9 42 -31 4 22 1.16
153 12 10 -31 24 30 10 46 10.1 36 60 -40 152 38 41 -31 50 25 153 44 44 -30 58 45 152 34 23 -31 53 42 153 48 47 -30 55 30 1.16
152 50 59 -31 15 38 10 46 12.6 35 61 -39 152 17 21 -31 41 31 153 23 43 -30 49 55 152 13 2 -31 44 47 153 27 47 -30 46 41 1.16
152 29 43 -31 6 47 10 46 15.2 35 61 -39 151 55 55 -31 32 38 153 2 36 -30 41 6 151 51 35 -31 35 54 153 6 41 -30 37 52 1.16
152 8 21 -30 57 58 10 46 17.8 35 61 -39 151 34 23 -31 23 47 152 41 23 -30 32 19 151 30 2 -31 27 3 152 45 29 -30 29 5 1.16
151 46 52 -30 49 10 10 46 20.3 35 62 -39 151 12 44 -31 14 57 152 20 4 -30 23 33 151 8 21 -31 18 13 152 24 11 -30 20 19 1.16
151 25 17 -30 40 24 10 46 22.9 35 62 -39 150 50 59 -31 6 9 151 58 39 -30 14 48 150 46 35 -31 9 24 152 2 47 -30 11 35 1.16
151 3 35 -30 31 39 10 46 25.5 34 62 -38 150 29 6 -30 57 22 151 37 7 -30 6 5 150 24 41 -31 0 37 151 41 17 -30 2 52 1.16
150 41 47 -30 22 55 10 46 28.0 34 63 -38 150 7 6 -30 48 36 151 15 29 -29 57 23 150 2 40 -30 51 52 151 19 40 -29 54 10 1.16
150 19 51 -30 14 13 10 46 30.6 34 63 -38 149 44 59 -30 39 53 150 53 44 -29 48 42 149 40 31 -30 43 7 150 57 57 -29 45 30 1.16
149 57 48 -30 5 32 10 46 33.2 34 64 -38 149 22 44 -30 31 10 150 31 52 -29 40 3 149 18 15 -30 34 25 150 36 6 -29 36 51 1.16
149 35 37 -29 56 53 10 46 35.7 34 64 -37 149 0 22 -30 22 29 150 9 53 -29 31 25 148 55 50 -30 25 43 150 14 8 -29 28 13 1.16
149 13 19 -29 48 15 10 46 38.3 33 64 -37 148 37 51 -30 13 49 149 47 46 -29 22 49 148 33 18 -30 17 4 149 52 3 -29 19 37 1.16
148 50 52 -29 39 38 10 46 40.9 33 65 -37 148 15 11 -30 5 11 149 25 32 -29 14 14 148 10 37 -30 8 25 149 29 50 -29 11 2 1.16
148 28 17 -29 31 3 10 46 43.4 33 65 -37 147 52 23 -29 56 34 149 3 9 -29 5 40 147 47 47 -29 59 48 149 7 29 -29 2 29 1.16
148 5 34 -29 22 29 10 46 46.0 33 65 -36 147 29 26 -29 47 59 148 40 38 -28 57 8 147 24 48 -29 51 13 148 45 0 -28 53 57 1.16
147 42 41 -29 13 57 10 46 48.6 32 66 -36 147 6 20 -29 39 25 148 17 59 -28 48 37 147 1 39 -29 42 39 148 22 22 -28 45 26 1.16
147 19 40 -29 5 26 10 46 51.1 32 66 -36 146 43 3 -29 30 53 147 55 11 -28 40 8 146 38 21 -29 34 6 147 59 35 -28 36 57 1.16
146 56 28 -28 56 57 10 46 53.7 32 66 -35 146 19 37 -29 22 22 147 32 13 -28 31 40 146 14 53 -29 25 35 147 36 40 -28 28 29 1.16
146 33 7 -28 48 29 10 46 56.3 32 67 -35 145 56 0 -29 13 53 147 9 7 -28 23 13 145 51 14 -29 17 6 147 13 35 -28 20 2 1.16
146 9 35 -28 40 2 10 46 58.8 31 67 -35 145 32 13 -29 5 25 146 45 50 -28 14 48 145 27 25 -29 8 38 146 50 20 -28 11 37 1.16
145 45 53 -28 31 37 10 47 1.4 31 67 -35 145 8 14 -28 56 59 146 22 23 -28 6 24 145 3 24 -29 0 11 146 26 55 -28 3 14 1.16
145 22 0 -28 23 13 10 47 4.0 31 68 -34 144 44 4 -28 48 34 145 58 46 -27 58 2 144 39 11 -28 51 46 146 3 20 -27 54 51 1.16
144 57 56 -28 14 51 10 47 6.5 31 68 -34 144 19 42 -28 40 11 145 34 58 -27 49 41 144 14 47 -28 43 23 145 39 34 -27 46 31 1.16
144 33 40 -28 6 31 10 47 9.1 30 68 -34 143 55 7 -28 31 49 145 10 59 -27 41 21 143 50 10 -28 35 1 145 15 37 -27 38 11 1.16
144 9 11 -27 58 11 10 47 11.7 30 69 -33 143 30 20 -28 23 29 144 46 48 -27 33 3 143 25 20 -28 26 41 144 51 28 -27 29 53 1.16
143 44 30 -27 49 54 10 47 14.2 30 69 -33 143 5 19 -28 15 10 144 22 26 -27 24 46 143 0 16 -28 18 22 144 27 8 -27 21 37 1.16
143 19 35 -27 41 38 10 47 16.8 30 69 -33 142 40 4 -28 6 53 143 57 50 -27 16 31 142 34 59 -28 10 5 144 2 35 -27 13 22 1.16
142 54 27 -27 33 23 10 47 19.4 29 70 -32 142 14 34 -27 58 37 143 33 2 -27 8 18 142 9 26 -28 1 49 143 37 49 -27 5 8 1.16
142 29 5 -27 25 10 10 47 21.9 29 70 -32 141 48 50 -27 50 23 143 8 0 -27 0 5 141 43 39 -27 53 35 143 12 49 -26 56 56 1.16
142 3 28 -27 16 59 10 47 24.5 29 70 -32 141 22 50 -27 42 11 142 42 44 -26 51 55 141 17 36 -27 45 23 142 47 36 -26 48 46 1.16
141 37 35 -27 8 49 10 47 27.1 28 71 -31 140 56 33 -27 34 1 142 17 14 -26 43 46 140 51 16 -27 37 12 142 22 8 -26 40 37 1.16
141 11 27 -27 0 40 10 47 29.6 28 71 -31 140 29 59 -27 25 52 141 51 28 -26 35 38 140 24 39 -27 29 3 141 56 25 -26 32 29 1.16
140 45 1 -26 52 34 10 47 32.2 28 71 -31 140 3 8 -27 17 45 141 25 27 -26 27 32 139 57 44 -27 20 56 141 30 27 -26 24 23 1.16
140 18 18 -26 44 29 10 47 34.8 27 72 -30 139 35 57 -27 9 39 140 59 9 -26 19 28 139 30 30 -27 12 50 141 4 12 -26 16 19 1.16
139 51 17 -26 36 26 10 47 37.3 27 72 -30 139 8 28 -27 1 35 140 32 34 -26 11 25 139 2 57 -27 4 47 140 37 41 -26 8 16 1.16
139 23 57 -26 28 24 10 47 39.9 27 72 -30 138 40 38 -26 53 34 140 5 41 -26 3 24 138 35 2 -26 56 45 140 10 51 -26 0 15 1.16
138 56 17 -26 20 24 10 47 42.5 26 73 -29 138 12 26 -26 45 34 139 38 30 -25 55 25 138 6 47 -26 48 45 139 43 43 -25 52 16 1.16
138 28 16 -26 12 27 10 47 45.0 26 73 -29 137 43 52 -26 37 35 139 10 59 -25 47 27 137 38 8 -26 40 47 139 16 15 -25 44 19 1.16
137 59 53 -26 4 30 10 47 47.6 26 73 -28 137 14 54 -26 29 39 138 43 7 -25 39 31 137 9 6 -26 32 50 138 48 28 -25 36 23 1.17
137 31 7 -25 56 36 10 47 50.2 25 74 -28 136 45 32 -26 21 45 138 14 54 -25 31 37 136 39 39 -26 24 56 138 20 19 -25 28 29 1.17
137 1 56 -25 48 44 10 47 52.7 25 74 -28 136 15 43 -26 13 53 137 46 19 -25 23 45 136 9 45 -26 17 4 137 51 47 -25 20 36 1.17
136 32 21 -25 40 54 10 47 55.3 25 74 -27 135 45 27 -26 6 3 137 17 20 -25 15 54 135 39 23 -26 9 14 137 22 53 -25 12 46 1.17
136 2 18 -25 33 5 10 47 57.9 24 75 -27 135 14 41 -25 58 15 136 47 56 -25 8 6 135 8 32 -26 1 26 136 53 33 -25 4 57 1.17
135 31 47 -25 25 19 10 48 0.4 24 75 -26 134 43 25 -25 50 29 136 18 5 -25 0 19 134 37 9 -25 53 40 136 23 48 -24 57 11 1.17
135 0 46 -25 17 35 10 48 3.0 23 75 -26 134 11 35 -25 42 45 135 47 47 -24 52 35 134 5 13 -25 45 57 135 53 35 -24 49 26 1.17
134 29 13 -25 9 53 10 48 5.6 23 76 -25 133 39 11 -25 35 4 135 17 0 -24 44 53 133 32 42 -25 38 16 135 22 53 -24 41 44 1.17
133 57 6 -25 2 14 10 48 8.1 23 76 -25 133 6 9 -25 27 26 134 45 42 -24 37 12 132 59 32 -25 30 37 134 51 41 -24 34 4 1.17
133 24 23 -24 54 36 10 48 10.7 22 76 -25 132 32 27 -25 19 50 134 13 51 -24 29 34 132 25 43 -25 23 2 134 19 56 -24 26 26 1.17
132 51 1 -24 47 2 10 48 13.3 22 77 -24 131 58 3 -25 12 16 133 41 25 -24 21 59 131 51 10 -25 15 28 133 47 36 -24 18 50 1.17
132 16 59 -24 39 30 10 48 15.8 21 77 -24 131 22 53 -25 4 46 133 8 22 -24 14 26 131 15 50 -25 7 58 133 14 40 -24 11 17 1.17
131 42 12 -24 32 1 10 48 18.4 21 77 -23 130 46 53 -24 57 19 132 34 39 -24 6 55 130 39 41 -25 0 31 132 41 4 -24 3 46 1.17
131 6 37 -24 24 34 10 48 21.0 20 78 -23 130 9 59 -24 49 54 132 0 13 -23 59 27 130 2 36 -24 53 7 132 6 47 -23 56 18 1.17
130 30 11 -24 17 11 10 48 23.5 20 78 -22 129 32 7 -24 42 34 131 25 1 -23 52 2 129 24 32 -24 45 47 131 31 44 -23 48 52 1.17
129 52 50 -24 9 51 10 48 26.1 19 78 -21 128 53 11 -24 35 16 130 49 0 -23 44 40 128 45 23 -24 38 30 130 55 52 -23 41 30 1.17
129 14 27 -24 2 35 10 48 28.7 19 79 -21 128 13 5 -24 28 3 130 12 5 -23 37 20 128 5 3 -24 31 17 130 19 7 -23 34 10 1.18
128 34 58 -23 55 22 10 48 31.2 18 79 -20 127 31 42 -24 20 54 129 34 12 -23 30 5 127 23 24 -24 24 8 129 41 26 -23 26 54 1.18
127 54 15 -23 48 13 10 48 33.8 17 79 -20 126 48 53 -24 13 49 128 55 16 -23 22 53 126 40 16 -24 17 4 129 2 41 -23 19 42 1.18
127 12 12 -23 41 9 10 48 36.4 17 80 -19 126 4 26 -24 6 50 128 15 10 -23 15 44 125 55 30 -24 10 6 128 22 48 -23 12 33 1.18
126 28 37 -23 34 9 10 48 38.9 16 80 -18 125 18 11 -23 59 56 127 33 46 -23 8 40 125 8 52 -24 3 13 127 41 40 -23 5 28 1.18
125 43 21 -23 27 14 10 48 41.5 16 80 -18 124 29 51 -23 53 8 126 50 57 -23 1 40 124 20 5 -23 56 26 126 59 8 -22 58 28 1.18
124 56 8 -23 20 26 10 48 44.1 15 81 -17 123 39 6 -23 46 28 126 6 32 -22 54 46 123 28 49 -23 49 47 126 15 1 -22 51 33 1.19
124 6 43 -23 13 44 10 48 46.6 14 81 -16 122 45 31 -23 39 56 125 20 19 -22 47 56 122 34 37 -23 43 16 125 29 9 -22 44 43 1.19
123 14 42 -23 7 10 10 48 49.2 13 81 -16 121 48 32 -23 33 33 124 32 2 -22 41 14 121 36 53 -23 36 56 124 41 16 -22 37 59 1.19
122 19 37 -23 0 44 10 48 51.8 13 82 -15 120 47 21 -23 27 23 123 41 21 -22 34 38 120 34 46 -23 30 47 123 51 4 -22 31 22 1.20
121 20 48 -22 54 29 10 48 54.3 12 82 -14 119 40 52 -23 21 27 122 47 53 -22 28 10 119 27 3 -23 24 55 122 58 9 -22 24 53 1.21
120 17 22 -22 48 27 10 48 56.9 11 83 -13 118 27 18 -23 15 51 121 51 2 -22 21 52 118 11 47 -23 19 23 122 2 0 -22 18 33 1.21
119 7 55 -22 42 42 10 48 59.5 10 83 -12 117 3 38 -23 10 41 120 50 5 -22 15 45 116 45 34 -23 14 20 121 1 53 -22 12 24 1.22
117 50 17 -22 37 19 10 49 2.0 9 84 -11 115 23 54 -23 6 15 119 43 55 -22 9 53 115 1 19 -23 10 6 119 56 48 -22 6 29 1.24
116 20 28 -22 32 29 10 49 4.6 7 84 -9 113 11 36 -23 3 15 118 30 50 -22 4 20 112 37 21 -23 7 36 118 45 12 -22 0 52 1.27
114 29 37 -22 28 35 10 49 7.2 6 85 -8 ... .. .. .. .. .. 117 8 0 -21 59 13 ... .. .. .. .. .. 117 24 31 -21 55 40 1.34
111 45 31 -22 27 1 10 49 9.7 3 86 -5 ... .. .. .. .. .. 115 29 46 -21 54 47 ... .. .. .. .. .. 115 49 53 -21 51 5 1.64
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