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Updated: 2020 JAN 12, 19:41 UT
Event Rank : 82
(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 Mar 03 UT, the 80.9 km diameter asteroid (318) Magdalena will occult a 11.9 mag star in the constellation Gemini for observers along a path across Western Australia from east of Esperence to south of Broome.
In the case of an occultation, the combined light of the asteroid and the star will drop by 2.52 mag to 14.32 mag (the magnitude of the asteroid) for at most 14.1 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 UCAC4 519-042306 by 318 Magdalena on 2020 Mar 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
139 7 6 -45 41 30 14 41 22.9 17 312 -38 138 22 33 -45 41 14 139 52 40 -45 42 6 137 38 44 -45 41 17 140 39 34 -45 43 4 -0.28
137 59 23 -44 49 57 14 41 30.0 18 312 -39 137 16 50 -44 50 8 138 42 48 -44 50 3 136 34 53 -44 50 35 139 27 21 -44 50 28 -0.28
135 8 33 -42 26 57 14 41 51.3 21 314 -41 134 30 17 -42 28 4 135 47 25 -42 26 4 133 52 22 -42 29 22 136 27 3 -42 25 23 -0.28
134 19 42 -41 42 22 14 41 58.4 22 315 -41 133 42 29 -41 43 42 134 57 26 -41 41 15 133 5 35 -41 45 12 135 35 52 -41 40 19 -0.28
133 33 58 -40 59 2 14 42 5.5 23 315 -42 132 57 41 -41 0 33 134 10 43 -40 57 43 132 21 41 -41 2 13 134 48 7 -40 56 34 -0.28
132 50 59 -40 16 50 14 42 12.6 24 315 -43 132 15 32 -40 18 30 133 26 51 -40 15 20 131 40 20 -40 20 19 134 3 20 -40 14 1 -0.28
132 10 25 -39 35 38 14 42 19.7 25 316 -43 131 35 43 -39 37 26 132 45 30 -39 34 0 131 1 14 -39 39 24 133 21 9 -39 32 30 -0.28
131 32 1 -38 55 23 14 42 26.8 26 316 -44 130 58 0 -38 57 18 132 6 24 -38 53 36 130 24 10 -38 59 22 132 41 18 -38 51 58 -0.28
130 55 33 -38 15 58 14 42 33.9 26 316 -44 130 22 9 -38 18 0 131 29 17 -38 14 4 129 48 56 -38 20 10 132 3 30 -38 12 19 -0.28
130 20 50 -37 37 20 14 42 41.0 27 317 -45 129 48 0 -37 39 28 130 53 58 -37 35 20 129 15 19 -37 41 44 131 27 35 -37 33 28 -0.27
129 47 42 -36 59 26 14 42 48.1 28 317 -45 129 15 23 -37 1 39 130 20 18 -36 57 21 128 43 13 -37 4 0 130 53 20 -36 55 23 -0.27
129 16 1 -36 22 12 14 42 55.2 29 317 -46 128 44 11 -36 24 30 129 48 6 -36 20 2 128 12 29 -36 26 55 130 20 37 -36 17 59 -0.27
128 45 38 -35 45 37 14 43 2.3 29 317 -46 128 14 16 -35 47 58 129 17 16 -35 43 22 127 42 59 -35 50 28 129 49 18 -35 41 14 -0.27
128 16 29 -35 9 36 14 43 9.4 30 318 -46 127 45 31 -35 12 2 128 47 41 -35 7 18 127 14 39 -35 14 35 129 19 16 -35 5 5 -0.27
127 48 26 -34 34 9 14 43 16.5 31 318 -47 127 17 52 -34 36 38 128 19 14 -34 31 47 126 47 23 -34 39 14 128 50 25 -34 29 30 -0.27
127 21 26 -33 59 14 14 43 23.6 31 318 -47 126 51 14 -34 1 46 127 51 51 -33 56 48 126 21 6 -34 4 24 128 22 38 -33 54 28 -0.27
126 55 23 -33 24 47 14 43 30.7 32 318 -48 126 25 31 -33 27 22 127 25 27 -33 22 18 125 55 44 -33 30 4 127 55 52 -33 19 55 -0.27
126 30 14 -32 50 49 14 43 37.8 33 318 -48 126 0 42 -32 53 26 126 59 58 -32 48 17 125 31 13 -32 56 10 127 30 3 -32 45 51 -0.27
126 5 55 -32 17 17 14 43 44.9 33 318 -48 125 36 40 -32 19 57 126 35 20 -32 14 42 125 7 30 -32 22 43 127 5 5 -32 12 13 -0.27
125 42 22 -31 44 10 14 43 52.0 34 318 -49 125 13 25 -31 46 52 126 11 30 -31 41 33 124 44 31 -31 49 41 126 40 56 -31 39 1 -0.27
125 19 33 -31 11 27 14 43 59.1 35 319 -49 124 50 52 -31 14 11 125 48 24 -31 8 48 124 22 14 -31 17 2 126 17 33 -31 6 14 -0.27
124 57 25 -30 39 7 14 44 6.2 35 319 -50 124 29 0 -30 41 53 125 26 0 -30 36 25 124 0 37 -30 44 45 125 54 53 -30 33 49 -0.27
124 35 56 -30 7 8 14 44 13.3 36 319 -50 124 7 45 -30 9 56 125 4 16 -30 4 25 123 39 37 -30 12 50 125 32 53 -30 1 46 -0.27
124 15 3 -29 35 30 14 44 20.4 36 319 -50 123 47 6 -29 38 19 124 43 8 -29 32 45 123 19 11 -29 41 15 125 11 31 -29 30 5 -0.27
123 54 44 -29 4 12 14 44 27.6 37 319 -51 123 27 1 -29 7 3 124 22 36 -29 1 25 122 59 19 -29 9 59 124 50 45 -28 58 43 -0.27
123 34 57 -28 33 12 14 44 34.7 37 319 -51 123 7 27 -28 36 5 124 2 37 -28 30 24 122 39 58 -28 39 3 124 30 32 -28 27 40 -0.27
123 15 42 -28 2 31 14 44 41.8 38 319 -51 122 48 23 -28 5 25 123 43 9 -27 59 42 122 21 6 -28 8 24 124 10 51 -27 56 56 -0.27
122 56 55 -27 32 7 14 44 48.9 39 319 -52 122 29 48 -27 35 2 123 24 10 -27 29 16 122 2 42 -27 38 3 123 51 41 -27 26 30 -0.27
122 38 36 -27 2 0 14 44 56.0 39 319 -52 122 11 41 -27 4 56 123 5 40 -26 59 8 121 44 45 -27 7 58 123 32 59 -26 56 20 -0.27
122 20 44 -26 32 9 14 45 3.1 40 319 -52 121 53 58 -26 35 6 122 47 37 -26 29 16 121 27 14 -26 38 9 123 14 45 -26 26 26 -0.27
122 3 16 -26 2 33 14 45 10.2 40 319 -52 121 36 41 -26 5 32 122 29 59 -25 59 39 121 10 6 -26 8 35 122 56 56 -25 56 48 -0.27
121 46 12 -25 33 12 14 45 17.3 41 319 -53 121 19 47 -25 36 12 122 12 45 -25 30 17 120 53 21 -25 39 16 122 39 32 -25 27 25 -0.27
121 29 31 -25 4 6 14 45 24.4 41 319 -53 121 3 15 -25 7 6 121 55 54 -25 1 10 120 36 59 -25 10 11 122 22 31 -24 58 17 -0.27
121 13 11 -24 35 13 14 45 31.5 42 319 -53 120 47 4 -24 38 15 121 39 25 -24 32 16 120 20 57 -24 41 20 122 5 53 -24 29 22 -0.27
120 57 12 -24 6 34 14 45 38.6 42 319 -53 120 31 14 -24 9 36 121 23 18 -24 3 36 120 5 15 -24 12 43 121 49 37 -24 0 41 -0.27
120 41 33 -23 38 8 14 45 45.7 43 319 -54 120 15 43 -23 41 10 121 7 30 -23 35 9 119 49 52 -23 44 18 121 33 41 -23 32 13 -0.27
120 26 13 -23 9 53 14 45 52.8 43 319 -54 120 0 31 -23 12 57 120 52 2 -23 6 54 119 34 48 -23 16 5 121 18 4 -23 3 57 -0.27
120 11 11 -22 41 51 14 45 59.9 44 319 -54 119 45 36 -22 44 56 120 36 52 -22 38 51 119 20 1 -22 48 4 121 2 47 -22 35 54 -0.27
119 56 27 -22 14 1 14 46 7.0 44 319 -54 119 30 59 -22 17 6 120 22 0 -22 11 0 119 5 31 -22 20 15 120 47 47 -22 8 2 -0.27
119 41 59 -21 46 22 14 46 14.1 45 318 -55 119 16 39 -21 49 27 120 7 25 -21 43 20 118 51 18 -21 52 37 120 33 5 -21 40 21 -0.27
119 27 47 -21 18 53 14 46 21.2 45 318 -55 119 2 34 -21 21 59 119 53 7 -21 15 51 118 37 19 -21 25 10 120 18 39 -21 12 52 -0.28
119 13 51 -20 51 36 14 46 28.3 46 318 -55 118 48 44 -20 54 42 119 39 4 -20 48 33 118 23 36 -20 57 53 120 4 29 -20 45 33 -0.28
119 0 10 -20 24 28 14 46 35.4 46 318 -55 118 35 9 -20 27 35 119 25 16 -20 21 25 118 10 7 -20 30 47 119 50 35 -20 18 24 -0.28
118 46 43 -19 57 30 14 46 42.5 46 318 -56 118 21 48 -20 0 38 119 11 43 -19 54 26 117 56 52 -20 3 50 119 36 55 -19 51 25 -0.28
118 33 29 -19 30 42 14 46 49.6 47 318 -56 118 8 41 -19 33 50 118 58 24 -19 27 38 117 43 51 -19 37 3 119 23 30 -19 24 36 -0.28
118 20 29 -19 4 4 14 46 56.7 47 318 -56 117 55 46 -19 7 12 118 45 18 -19 0 58 117 31 2 -19 10 25 119 10 18 -18 57 56 -0.28
118 7 42 -18 37 34 14 47 3.8 48 318 -56 117 43 5 -18 40 43 118 32 25 -18 34 28 117 18 26 -18 43 56 118 57 20 -18 31 25 -0.28
117 55 7 -18 11 13 14 47 10.9 48 318 -56 117 30 35 -18 14 22 118 19 45 -18 8 7 117 6 2 -18 17 36 118 44 34 -18 5 3 -0.28
117 42 45 -17 45 0 14 47 18.0 49 317 -57 117 18 17 -17 48 10 118 7 17 -17 41 54 116 53 49 -17 51 24 118 32 1 -17 38 50 -0.28
117 30 33 -17 18 56 14 47 25.1 49 317 -57 117 6 11 -17 22 6 117 55 1 -17 15 49 116 41 47 -17 25 21 118 19 40 -17 12 45 -0.28
117 18 33 -16 53 0 14 47 32.2 50 317 -57 116 54 16 -16 56 11 117 42 56 -16 49 52 116 29 57 -16 59 25 118 7 30 -16 46 47 -0.28
117 6 44 -16 27 12 14 47 39.3 50 317 -57 116 42 31 -16 30 23 117 31 2 -16 24 4 116 18 16 -16 33 37 117 55 32 -16 20 58 -0.28
116 55 5 -16 1 31 14 47 46.4 50 317 -57 116 30 56 -16 4 42 117 19 19 -15 58 23 116 6 46 -16 7 57 117 43 44 -15 55 17 -0.28
116 43 36 -15 35 57 14 47 53.5 51 317 -57 116 19 32 -15 39 9 117 7 46 -15 32 49 115 55 26 -15 42 25 117 32 6 -15 29 42 -0.28
116 32 18 -15 10 31 14 48 0.6 51 317 -58 116 8 17 -15 13 43 116 56 23 -15 7 22 115 44 15 -15 16 59 117 20 39 -15 4 16 -0.28
116 21 8 -14 45 12 14 48 7.7 52 316 -58 115 57 12 -14 48 24 116 45 9 -14 42 3 115 33 14 -14 51 40 117 9 22 -14 38 56 -0.28
116 10 8 -14 19 59 14 48 14.8 52 316 -58 115 46 15 -14 23 12 116 34 5 -14 16 50 115 22 21 -14 26 29 116 58 14 -14 13 42 -0.28
115 59 17 -13 54 54 14 48 21.9 52 316 -58 115 35 28 -13 58 7 116 23 10 -13 51 44 115 11 37 -14 1 23 116 47 15 -13 48 36 -0.28
115 48 34 -13 29 54 14 48 29.0 53 316 -58 115 24 49 -13 33 8 116 12 24 -13 26 44 115 1 2 -13 36 25 116 36 25 -13 23 36 -0.28
115 38 0 -13 5 1 14 48 36.1 53 316 -58 115 14 18 -13 8 15 116 1 47 -13 1 51 114 50 34 -13 11 32 116 25 44 -12 58 42 -0.28
115 27 34 -12 40 14 14 48 43.2 54 315 -58 115 3 56 -12 43 28 115 51 18 -12 37 3 114 40 15 -12 46 46 116 15 11 -12 33 54 -0.28
115 17 16 -12 15 33 14 48 50.3 54 315 -59 114 53 41 -12 18 47 115 40 56 -12 12 22 114 30 3 -12 22 5 116 4 47 -12 9 13 -0.28
115 7 6 -11 50 58 14 48 57.4 54 315 -59 114 43 34 -11 54 12 115 30 43 -11 47 46 114 19 59 -11 57 30 115 54 31 -11 44 37 -0.28
114 57 3 -11 26 28 14 49 4.5 55 315 -59 114 33 34 -11 29 43 115 20 37 -11 23 16 114 10 2 -11 33 1 115 44 22 -11 20 6 -0.28
114 47 8 -11 2 4 14 49 11.6 55 314 -59 114 23 41 -11 5 19 115 10 39 -10 58 52 114 0 13 -11 8 37 115 34 21 -10 55 42 -0.28
114 37 20 -10 37 45 14 49 18.7 56 314 -59 114 13 56 -10 41 0 115 0 48 -10 34 33 113 50 30 -10 44 19 115 24 27 -10 31 22 -0.28
114 27 39 -10 13 31 14 49 25.8 56 314 -59 114 4 17 -10 16 47 114 51 4 -10 10 19 113 40 54 -10 20 6 115 14 41 -10 7 8 -0.28
114 18 4 - 9 49 23 14 49 32.9 56 314 -59 113 54 45 - 9 52 38 114 41 27 - 9 46 10 113 31 24 - 9 55 58 115 5 1 - 9 42 59 -0.28
114 8 36 - 9 25 19 14 49 40.0 57 313 -59 113 45 19 - 9 28 35 114 31 57 - 9 22 6 113 22 1 - 9 31 55 114 55 28 - 9 18 55 -0.28
113 59 15 - 9 1 20 14 49 47.1 57 313 -59 113 36 0 - 9 4 37 114 22 33 - 8 58 7 113 12 44 - 9 7 56 114 46 2 - 8 54 55 -0.28
113 49 59 - 8 37 26 14 49 54.2 57 313 -59 113 26 47 - 8 40 43 114 13 16 - 8 34 13 113 3 33 - 8 44 3 114 36 42 - 8 31 1 -0.29
113 40 50 - 8 13 37 14 50 1.3 58 312 -60 113 17 40 - 8 16 53 114 4 4 - 8 10 23 112 54 28 - 8 20 14 114 27 29 - 8 7 11 -0.29
113 31 47 - 7 49 52 14 50 8.4 58 312 -60 113 8 39 - 7 53 8 113 54 59 - 7 46 37 112 45 29 - 7 56 29 114 18 21 - 7 43 25 -0.29
113 22 49 - 7 26 11 14 50 15.5 58 312 -60 112 59 43 - 7 29 28 113 46 0 - 7 22 56 112 36 35 - 7 32 49 114 9 20 - 7 19 44 -0.29
113 13 58 - 7 2 34 14 50 22.6 59 311 -60 112 50 53 - 7 5 52 113 37 6 - 6 59 20 112 27 47 - 7 9 12 114 0 24 - 6 56 7 -0.29
113 5 11 - 6 39 2 14 50 29.7 59 311 -60 112 42 9 - 6 42 19 113 28 18 - 6 35 47 112 19 4 - 6 45 40 113 51 35 - 6 32 34 -0.29
112 56 31 - 6 15 33 14 50 36.8 59 311 -60 112 33 30 - 6 18 51 113 19 35 - 6 12 18 112 10 26 - 6 22 12 113 42 50 - 6 9 5 -0.29
112 47 55 - 5 52 9 14 50 43.9 60 310 -60 112 24 56 - 5 55 27 113 10 58 - 5 48 53 112 1 54 - 5 58 48 113 34 12 - 5 45 40 -0.29
112 39 25 - 5 28 48 14 50 51.0 60 310 -60 112 16 27 - 5 32 6 113 2 26 - 5 25 32 111 53 27 - 5 35 28 113 25 38 - 5 22 18 -0.29
112 30 59 - 5 5 31 14 50 58.1 60 310 -60 112 8 3 - 5 8 50 112 54 0 - 5 2 15 111 45 4 - 5 12 11 113 17 10 - 4 59 1 -0.29
112 22 39 - 4 42 18 14 51 5.2 61 309 -60 111 59 44 - 4 45 36 112 45 38 - 4 39 1 111 36 46 - 4 48 59 113 8 47 - 4 35 47 -0.29
112 14 23 - 4 19 8 14 51 12.3 61 309 -60 111 51 29 - 4 22 27 112 37 21 - 4 15 51 111 28 33 - 4 25 49 113 0 29 - 4 12 37 -0.29
112 6 12 - 3 56 1 14 51 19.4 61 308 -60 111 43 20 - 3 59 20 112 29 9 - 3 52 45 111 20 25 - 4 2 43 112 52 16 - 3 49 30 -0.29
111 58 6 - 3 32 58 14 51 26.5 62 308 -60 111 35 14 - 3 36 17 112 21 2 - 3 29 41 111 12 20 - 3 39 40 112 44 7 - 3 26 26 -0.29
111 50 4 - 3 9 58 14 51 33.6 62 307 -60 111 27 14 - 3 13 18 112 12 59 - 3 6 41 111 4 21 - 3 16 41 112 36 3 - 3 3 26 -0.29
111 42 7 - 2 47 1 14 51 40.7 62 307 -60 111 19 17 - 2 50 21 112 5 1 - 2 43 44 110 56 25 - 2 53 44 112 28 4 - 2 40 28 -0.29
111 34 14 - 2 24 8 14 51 47.8 63 307 -60 111 11 25 - 2 27 28 111 57 7 - 2 20 50 110 48 34 - 2 30 51 112 20 10 - 2 17 34 -0.29
111 26 26 - 2 1 17 14 51 54.9 63 306 -60 111 3 37 - 2 4 37 111 49 18 - 1 57 59 110 40 47 - 2 8 1 112 12 19 - 1 54 43 -0.29
111 18 41 - 1 38 29 14 52 2.0 63 306 -60 110 55 53 - 1 41 50 111 41 32 - 1 35 11 110 33 4 - 1 45 13 112 4 33 - 1 31 54 -0.29
111 11 1 - 1 15 44 14 52 9.1 64 305 -60 110 48 14 - 1 19 5 111 33 51 - 1 12 26 110 25 24 - 1 22 29 111 56 52 - 1 9 9 -0.29
Uncertainty in time = +/- 7 secs
Prediction of 2020 Jan 12.0
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[Using the Predictions]
[Observing Details]
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