IOTA/IOTA-ES occultation update for (500) Selinur / UCAC4-582-011487 event on 2021 Jan 31, 15:36 UT Visible from China, Russia Summary ------- On 2021 Jan 31 UT, the 43.5 km diameter asteroid (500) Selinur will occult a 12.0 mag star in the constellation Taurus for observers along a path across China, Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.99 mag to 13.75 mag (the magnitude of the asteroid) for at most 6.1 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, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 94 * date and approx. time of event: 2021 Jan 31, 15:23 - 2021 Jan 31, 15:49 * geocentric midpoint of event [JD]: 2459246.15050000 * magnitude of target star: 11.95 * magnitude drop [mag]: 1.99 * estimated maximum duration [s]: 6.1 * Moon: 90 % sunlit, 101° distance * Sun: 115° distance * rough path description: China, Russia Additional comments ------------------- RUWE high, no proper motion The occultation path -------------------- * approximate projected width [km]: 50 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 3.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.010", 88°) * approx speed of asteroid's shadow [km/s]: 7.1136 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-582-011487 by 500 Selinur on 2021 Jan 31 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 .. .. .. - 2 0 0 .. .. .... .. .. .. ... .. .. ... .. .. 145 1 26 ... .. .. .... 144 2 16 - 1 0 0 15 49 36.3 2 296 -65 143 32 26 144 32 28 143 5 3 145 0 47 .... 142 9 56 0 0 0 15 49 34.5 4 296 -67 141 41 20 142 38 50 141 15 5 143 5 55 -0.48 140 23 28 1 0 0 15 49 31.5 6 296 -68 139 55 56 140 51 17 139 30 38 141 17 18 -0.54 Latitude Latitude Latitude Latitude 139 0 0 1 49 12 15 49 28.2 7 296 -70 1 33 4 2 5 23 1 18 9 2 20 27 -0.57 138 0 0 2 25 45 15 49 25.2 9 296 -71 2 9 30 2 42 4 1 54 28 2 57 14 -0.60 137 0 0 3 3 18 15 49 21.8 10 296 -72 2 46 54 3 19 44 2 31 46 3 35 2 -0.60 136 0 0 3 41 50 15 49 17.9 11 296 -73 3 25 19 3 58 24 3 10 3 4 13 50 -0.60 135 0 0 4 21 22 15 49 13.6 12 296 -74 4 4 43 4 38 5 3 49 20 4 53 38 -0.60 134 0 0 5 1 55 15 49 8.7 13 296 -76 4 45 8 5 18 46 4 29 37 5 34 27 -0.61 133 0 0 5 43 28 15 49 3.4 15 296 -77 5 26 33 6 0 28 5 10 54 6 16 16 -0.61 132 0 0 6 26 2 15 48 57.5 16 296 -78 6 8 57 6 43 10 5 53 11 6 59 7 -0.61 131 0 0 7 9 35 15 48 51.2 17 295 -79 6 52 22 7 26 52 6 36 27 7 42 57 -0.61 130 0 0 7 54 8 15 48 44.3 18 295 -80 7 36 46 8 11 35 7 20 44 8 27 48 -0.61 129 0 0 8 39 41 15 48 36.9 19 295 -81 8 22 10 8 57 17 8 5 59 9 13 39 -0.61 128 0 0 9 26 14 15 48 28.9 21 295 -82 9 8 33 9 43 58 8 52 14 10 0 30 -0.61 127 0 0 10 13 44 15 48 20.4 22 294 -83 9 55 55 10 31 39 9 39 26 10 48 19 -0.61 126 0 0 11 2 13 15 48 11.4 23 294 -84 10 44 14 11 20 17 10 27 37 11 37 7 -0.61 125 0 0 11 51 39 15 48 1.8 24 294 -84 11 33 30 12 9 53 11 16 44 12 26 51 -0.61 124 0 0 12 42 1 15 47 51.7 26 293 -85 12 23 42 13 0 25 12 6 47 13 17 33 -0.61 123 0 0 13 33 18 15 47 41.0 27 293 -85 13 14 50 13 51 52 12 57 46 14 9 9 -0.61 122 0 0 14 25 29 15 47 29.8 28 292 -85 14 6 50 14 44 13 13 49 37 15 1 39 -0.61 121 0 0 15 18 32 15 47 18.1 30 292 -84 14 59 43 15 37 26 14 42 21 15 55 2 -0.61 120 0 0 16 12 25 15 47 5.8 31 291 -83 15 53 26 16 31 29 15 35 55 16 49 15 -0.61 119 0 0 17 7 7 15 46 52.9 32 291 -83 16 47 58 17 26 21 16 30 18 17 44 16 -0.61 118 0 0 18 2 35 15 46 39.6 33 290 -82 17 43 16 18 21 59 17 25 27 18 40 4 -0.61 117 0 0 18 58 47 15 46 25.7 35 289 -80 18 39 18 19 18 22 18 21 20 19 36 35 -0.61 116 0 0 19 55 41 15 46 11.3 36 289 -79 19 36 2 20 15 25 19 17 54 20 33 48 -0.61 115 0 0 20 53 13 15 45 56.5 37 288 -78 20 33 25 21 13 7 20 15 8 21 31 40 -0.61 114 0 0 21 51 21 15 45 41.2 38 287 -77 21 31 23 22 11 25 21 12 58 22 30 6 -0.61 113 0 0 22 50 1 15 45 25.4 40 286 -76 22 29 54 23 10 15 22 11 20 23 29 5 -0.61 112 0 0 23 49 11 15 45 9.2 41 285 -74 23 28 55 24 9 33 23 10 12 24 28 32 -0.61 111 0 0 24 48 46 15 44 52.5 42 284 -73 24 28 21 25 9 17 24 9 30 25 28 24 -0.61 110 0 0 25 48 42 15 44 35.5 43 283 -72 25 28 9 26 9 22 25 9 11 26 28 37 -0.61 109 0 0 26 48 56 15 44 18.1 44 282 -70 26 28 15 27 9 44 26 9 9 27 29 7 -0.61 108 0 0 27 49 24 15 44 0.4 45 280 -69 27 28 34 28 10 19 27 9 22 28 29 50 -0.61 107 0 0 28 50 0 15 43 42.4 46 279 -68 28 29 4 29 11 3 28 9 44 29 30 41 -0.61 106 0 0 29 50 41 15 43 24.2 48 278 -67 29 29 38 30 11 51 29 10 12 30 31 35 -0.61 105 0 0 30 51 23 15 43 5.7 49 276 -65 30 30 13 31 12 39 30 10 42 31 32 29 -0.60 104 0 0 31 51 59 15 42 47.0 50 274 -64 31 30 44 32 13 22 31 11 8 32 33 17 -0.60 103 0 0 32 52 27 15 42 28.1 51 273 -63 32 31 7 33 13 55 32 11 26 33 33 54 -0.60 102 0 0 33 52 41 15 42 9.1 52 271 -61 33 31 16 34 14 13 33 11 31 34 34 17 -0.60 101 0 0 34 52 37 15 41 50.0 52 269 -60 34 31 8 35 14 13 34 11 19 35 34 21 -0.60 100 0 0 35 52 10 15 41 30.9 53 267 -59 35 30 38 36 13 49 35 10 46 36 34 0 -0.60 99 0 0 36 51 16 15 41 11.7 54 265 -58 36 29 42 37 12 58 36 9 47 37 33 11 -0.60 98 0 0 37 49 51 15 40 52.6 55 263 -56 37 28 14 38 11 34 37 8 18 38 31 49 -0.60 97 0 0 38 47 49 15 40 33.5 55 261 -55 38 26 12 39 9 34 38 6 15 39 29 50 -0.60 96 0 0 39 45 8 15 40 14.4 56 258 -54 39 23 31 40 6 53 39 3 33 40 27 10 -0.59 95 0 0 40 41 44 15 39 55.5 57 256 -53 40 20 7 41 3 29 40 0 10 41 23 45 -0.59 94 0 0 41 37 33 15 39 36.8 57 254 -52 41 15 57 41 59 17 40 56 0 42 19 32 -0.59 93 0 0 42 32 32 15 39 18.2 58 251 -51 42 10 57 42 54 14 41 51 2 43 14 27 -0.59 92 0 0 43 26 38 15 38 59.8 58 249 -49 43 5 5 43 48 17 42 45 13 44 8 28 -0.59 91 0 0 44 19 47 15 38 41.6 59 246 -48 43 58 18 44 41 24 43 38 28 45 1 32 -0.59 90 0 0 45 11 59 15 38 23.7 59 243 -47 44 50 33 45 33 31 44 30 47 45 53 36 -0.59 89 0 0 46 3 10 15 38 6.1 59 241 -46 45 41 48 46 24 38 45 22 6 46 44 38 -0.59 88 0 0 46 53 19 15 37 48.7 59 238 -45 46 32 2 47 14 42 46 12 24 47 34 37 -0.59 87 0 0 47 42 23 15 37 31.6 59 236 -44 47 21 12 48 3 41 47 1 39 48 23 31 -0.59 86 0 0 48 30 23 15 37 14.8 60 233 -43 48 9 18 48 51 34 47 49 50 49 11 19 -0.59 85 0 0 49 17 16 15 36 58.4 60 230 -42 48 56 17 49 38 21 48 36 56 49 58 0 -0.59 84 0 0 50 3 3 15 36 42.3 60 228 -41 49 42 11 50 24 1 49 22 55 50 43 32 -0.59 83 0 0 50 47 41 15 36 26.5 60 225 -40 50 26 57 51 8 32 50 7 48 51 27 57 -0.59 82 0 0 51 31 12 15 36 11.1 60 223 -39 51 10 35 51 51 55 50 51 34 52 11 13 -0.58 81 0 0 52 13 35 15 35 56.0 59 220 -38 51 53 7 52 34 10 51 34 12 52 53 20 -0.58 80 0 0 52 54 51 15 35 41.3 59 218 -38 52 34 30 53 15 17 52 15 44 53 34 19 -0.58 79 0 0 53 34 59 15 35 26.9 59 215 -37 53 14 47 53 55 16 52 56 8 54 14 10 -0.58 78 0 0 54 14 0 15 35 12.9 59 213 -36 53 53 57 54 34 8 53 35 26 54 52 53 -0.58 77 0 0 54 51 54 15 34 59.2 59 211 -35 54 32 0 55 11 53 54 13 38 55 30 30 -0.58 76 0 0 55 28 43 15 34 45.8 59 209 -34 55 8 58 55 48 33 54 50 45 56 7 1 -0.58 75 0 0 56 4 28 15 34 32.8 58 206 -34 55 44 52 56 24 8 55 26 47 56 42 27 -0.58 74 0 0 56 39 8 15 34 20.2 58 204 -33 56 19 42 56 58 39 56 1 46 57 16 49 -0.58 73 0 0 57 12 46 15 34 7.8 58 202 -32 56 53 30 57 32 7 56 35 42 57 50 8 -0.58 72 0 0 57 45 23 15 33 55.8 57 200 -31 57 26 16 58 4 34 57 8 37 58 22 26 -0.58 71 0 0 58 16 59 15 33 44.1 57 198 -31 57 58 2 58 36 0 57 40 31 58 53 43 -0.58 70 0 0 58 47 36 15 33 32.8 57 196 -30 58 28 48 59 6 28 58 11 27 59 24 1 -0.58 69 0 0 59 17 15 15 33 21.7 56 194 -29 58 58 37 59 35 57 58 41 25 59 53 22 -0.58 68 0 0 59 45 58 15 33 10.9 56 192 -29 59 27 30 60 4 31 59 10 26 60 21 46 -0.58 67 0 0 60 13 46 15 33 0.4 56 191 -28 59 55 28 60 32 9 59 38 33 60 49 15 -0.58 66 0 0 60 40 40 15 32 50.2 55 189 -27 60 22 31 60 58 54 60 5 45 61 15 51 -0.58 65 0 0 61 6 42 15 32 40.2 55 187 -27 60 48 43 61 24 46 60 32 5 61 41 34 -0.58 64 0 0 61 31 53 15 32 30.5 55 185 -26 61 14 3 61 49 47 60 57 34 62 6 27 -0.58 63 0 0 61 56 14 15 32 21.1 54 184 -26 61 38 33 62 13 59 61 22 13 62 30 30 -0.58 62 0 0 62 19 47 15 32 11.9 54 182 -25 62 2 15 62 37 23 61 46 3 62 53 46 -0.58 61 0 0 62 42 33 15 32 2.9 54 181 -25 62 25 10 63 0 0 62 9 6 63 16 14 -0.58 60 0 0 63 4 34 15 31 54.2 53 179 -24 62 47 19 63 21 52 62 31 24 63 37 57 -0.58 59 0 0 63 25 50 15 31 45.7 53 177 -24 63 8 44 63 42 59 62 52 56 63 58 56 -0.58 58 0 0 63 46 23 15 31 37.4 52 176 -23 63 29 26 64 3 23 63 13 46 64 19 12 -0.58 57 0 0 64 6 14 15 31 29.4 52 174 -23 63 49 25 64 23 6 63 33 53 64 38 47 -0.58 56 0 0 64 25 24 15 31 21.5 52 173 -22 64 8 43 64 42 8 63 53 19 64 57 41 -0.58 55 0 0 64 43 55 15 31 13.8 51 172 -22 64 27 22 65 0 30 64 12 5 65 15 57 -0.58 54 0 0 65 1 47 15 31 6.3 51 170 -21 64 45 22 65 18 15 64 30 12 65 33 34 -0.58 53 0 0 65 19 2 15 30 59.0 51 169 -21 65 2 45 65 35 22 64 47 42 65 50 34 -0.58 52 0 0 65 35 41 15 30 51.8 50 167 -20 65 19 32 65 51 54 65 4 36 66 6 58 -0.58 51 0 0 65 51 45 15 30 44.9 50 166 -20 65 35 43 66 7 50 65 20 53 66 22 47 -0.58 50 0 0 66 7 14 15 30 38.0 50 165 -19 65 51 19 66 23 12 65 36 37 66 38 3 -0.58 49 0 0 66 22 11 15 30 31.4 49 163 -19 66 6 23 66 38 1 65 51 46 66 52 46 -0.58 48 0 0 66 36 35 15 30 24.8 49 162 -19 66 20 53 66 52 19 66 6 23 67 6 56 -0.58 47 0 0 66 50 27 15 30 18.5 48 161 -18 66 34 53 67 6 5 66 20 29 67 20 36 -0.58 46 0 0 67 3 49 15 30 12.2 48 159 -18 66 48 21 67 19 20 66 34 3 67 33 46 -0.58 45 0 0 67 16 42 15 30 6.1 48 158 -17 67 1 20 67 32 7 66 47 8 67 46 26 -0.58 44 0 0 67 29 6 15 30 0.1 47 157 -17 67 13 50 67 44 24 66 59 43 67 58 38 -0.58 43 0 0 67 41 1 15 29 54.3 47 156 -17 67 25 51 67 56 14 67 11 50 68 10 22 -0.58 42 0 0 67 52 29 15 29 48.5 47 154 -16 67 37 25 68 7 36 67 23 29 68 21 39 -0.58 41 0 0 68 3 31 15 29 42.9 46 153 -16 67 48 32 68 18 32 67 34 41 68 32 30 -0.58 40 0 0 68 14 6 15 29 37.4 46 152 -16 67 59 13 68 29 2 67 45 26 68 42 55 -0.58 39 0 0 68 24 16 15 29 32.0 46 151 -15 68 9 28 68 39 7 67 55 46 68 52 55 -0.58 38 0 0 68 34 2 15 29 26.7 45 149 -15 68 19 18 68 48 48 68 5 41 69 2 31 -0.58 37 0 0 68 43 23 15 29 21.4 45 148 -14 68 28 45 68 58 4 68 15 12 69 11 43 -0.58 36 0 0 68 52 21 15 29 16.3 45 147 -14 68 37 47 69 6 57 68 24 19 69 20 32 -0.58 35 0 0 69 0 56 15 29 11.3 44 146 -14 68 46 26 69 15 28 68 33 2 69 28 58 -0.58 34 0 0 69 9 8 15 29 6.3 44 145 -13 68 54 43 69 23 36 68 41 23 69 37 2 -0.58 33 0 0 69 16 59 15 29 1.5 44 144 -13 69 2 37 69 31 22 68 49 21 69 44 45 -0.58 32 0 0 69 24 28 15 28 56.7 44 142 -13 69 10 10 69 38 47 68 56 57 69 52 6 -0.58 31 0 0 69 31 36 15 28 52.0 43 141 -13 69 17 22 69 45 51 69 4 12 69 59 7 -0.58 30 0 0 69 38 23 15 28 47.3 43 140 -12 69 24 13 69 52 35 69 11 6 70 5 47 -0.58 29 0 0 69 44 50 15 28 42.8 43 139 -12 69 30 43 69 58 59 69 17 40 70 12 7 -0.58 28 0 0 69 50 57 15 28 38.3 42 138 -12 69 36 53 70 5 2 69 23 53 70 18 8 -0.58 27 0 0 69 56 45 15 28 33.8 42 137 -11 69 42 44 70 10 47 69 29 47 70 23 50 -0.58 26 0 0 70 2 13 15 28 29.5 42 136 -11 69 48 16 70 16 13 69 35 21 70 29 13 -0.58 25 0 0 70 7 23 15 28 25.2 41 134 -11 69 53 28 70 21 20 69 40 36 70 34 17 -0.58 24 0 0 70 12 14 15 28 20.9 41 133 -10 69 58 22 70 26 8 69 45 32 70 39 3 -0.58 23 0 0 70 16 47 15 28 16.7 41 132 -10 70 2 57 70 30 39 69 50 10 70 43 32 -0.58 22 0 0 70 21 2 15 28 12.6 40 131 -10 70 7 14 70 34 51 69 54 29 70 47 42 -0.58 21 0 0 70 24 59 15 28 8.5 40 130 -10 70 11 14 70 38 46 69 58 30 70 51 35 -0.58 20 0 0 70 28 39 15 28 4.4 40 129 -9 70 14 55 70 42 24 70 2 13 70 55 11 -0.58 19 0 0 70 32 1 15 28 0.4 40 128 -9 70 18 19 70 45 45 70 5 39 70 58 30 -0.58 18 0 0 70 35 6 15 27 56.5 39 127 -9 70 21 26 70 48 48 70 8 48 71 1 32 -0.58 17 0 0 70 37 55 15 27 52.6 39 126 -8 70 24 16 70 51 35 70 11 39 71 4 18 -0.58 16 0 0 70 40 26 15 27 48.7 39 125 -8 70 26 49 70 54 6 70 14 13 71 6 47 -0.58 15 0 0 70 42 41 15 27 44.9 38 123 -8 70 29 5 70 56 19 70 16 30 71 8 59 -0.58 14 0 0 70 44 40 15 27 41.1 38 122 -8 70 31 5 70 58 17 70 18 31 71 10 56 -0.58 13 0 0 70 46 22 15 27 37.3 38 121 -7 70 32 48 70 59 58 70 20 15 71 12 36 -0.58 12 0 0 70 47 48 15 27 33.6 37 120 -7 70 34 14 71 1 23 70 21 42 71 14 1 -0.58 11 0 0 70 48 58 15 27 29.9 37 119 -7 70 35 25 71 2 32 70 22 53 71 15 9 -0.58 10 0 0 70 49 51 15 27 26.2 37 118 -7 70 36 19 71 3 25 70 23 47 71 16 2 -0.58 9 0 0 70 50 29 15 27 22.6 37 117 -6 70 36 56 71 4 3 70 24 25 71 16 39 -0.58 8 0 0 70 50 50 15 27 19.0 36 116 -6 70 37 18 71 4 24 70 24 47 71 17 0 -0.58 7 0 0 70 50 55 15 27 15.4 36 115 -6 70 37 23 71 4 29 70 24 52 71 17 6 -0.59 6 0 0 70 50 45 15 27 11.9 36 114 -5 70 37 13 71 4 19 70 24 41 71 16 56 -0.59 5 0 0 70 50 18 15 27 8.4 35 113 -5 70 36 46 71 3 53 70 24 14 71 16 30 -0.59 4 0 0 70 49 36 15 27 4.9 35 112 -5 70 36 3 71 3 11 70 23 30 71 15 48 -0.59 3 0 0 70 48 37 15 27 1.4 35 111 -5 70 35 3 71 2 13 70 22 31 71 14 51 -0.59 2 0 0 70 47 23 15 26 57.9 34 110 -4 70 33 48 71 0 59 70 21 14 71 13 38 -0.59 1 0 0 70 45 52 15 26 54.5 34 109 -4 70 32 16 70 59 29 70 19 42 71 12 9 -0.59 0 0 0 70 44 5 15 26 51.1 34 108 -4 70 30 28 70 57 43 70 17 52 71 10 24 -0.59 - 1 0 0 70 42 1 15 26 47.7 33 106 -4 70 28 23 70 55 41 70 15 47 71 8 23 -0.59 - 2 0 0 70 39 41 15 26 44.3 33 105 -3 70 26 2 70 53 22 70 13 24 71 6 5 -0.59 - 3 0 0 70 37 5 15 26 41.0 33 104 -3 70 23 24 70 50 47 70 10 45 71 3 32 -0.59 - 4 0 0 70 34 12 15 26 37.6 33 103 -3 70 20 29 70 47 56 70 7 48 71 0 42 -0.59 - 5 0 0 70 31 2 15 26 34.3 32 102 -3 70 17 17 70 44 48 70 4 35 70 57 36 -0.59 - 6 0 0 70 27 35 15 26 30.9 32 101 -2 70 13 48 70 41 23 70 1 4 70 54 13 -0.59 - 7 0 0 70 23 51 15 26 27.6 32 100 -2 70 10 2 70 37 41 69 57 16 70 50 33 -0.59 - 8 0 0 70 19 49 15 26 24.3 31 99 -2 70 5 58 70 33 42 69 53 10 70 46 35 -0.59 - 9 0 0 70 15 30 15 26 21.0 31 98 -2 70 1 36 70 29 25 69 48 46 70 42 21 -0.59 - 10 0 0 70 10 53 15 26 17.8 31 97 -1 69 56 57 70 24 50 69 44 4 70 37 49 -0.59 - 11 0 0 70 5 57 15 26 14.5 30 96 -1 69 51 59 70 19 58 69 39 3 70 32 59 -0.59 - 12 0 0 70 0 44 15 26 11.2 30 95 -1 69 46 42 70 14 47 69 33 44 70 27 51 -0.59 - 13 0 0 69 55 12 15 26 8.0 30 94 0 69 41 7 70 9 18 69 28 6 70 22 25 -0.59 - 14 0 0 69 49 20 15 26 4.8 29 93 0 69 35 13 70 3 30 69 22 8 70 16 40 -0.59 - 15 0 0 69 43 10 15 26 1.5 29 92 0 69 28 59 69 57 23 69 15 51 70 10 37 -0.59 - 16 0 0 69 36 40 15 25 58.3 29 91 0 69 22 25 69 50 57 69 9 14 70 4 13 -0.59 - 17 0 0 69 29 50 15 25 55.1 28 90 1 69 15 31 69 44 11 69 2 17 69 57 31 -0.60 - 18 0 0 69 22 40 15 25 51.9 28 89 1 69 8 17 69 37 4 68 54 59 69 50 28 -0.60 - 19 0 0 69 15 8 15 25 48.6 27 88 1 69 0 42 69 29 37 68 47 20 69 43 5 -0.60 - 20 0 0 69 7 16 15 25 45.4 27 87 1 68 52 45 69 21 49 68 39 20 69 35 21 -0.60 - 21 0 0 68 59 2 15 25 42.2 27 86 2 68 44 27 69 13 40 68 30 58 69 27 15 -0.60 - 22 0 0 68 50 26 15 25 39.0 26 85 2 68 35 47 69 5 8 68 22 13 69 18 48 -0.60 - 23 0 0 68 41 28 15 25 35.9 26 84 2 68 26 43 68 56 14 68 13 5 69 9 59 -0.60 - 24 0 0 68 32 6 15 25 32.7 26 83 3 68 17 17 68 46 58 68 3 34 69 0 47 -0.60 - 25 0 0 68 22 21 15 25 29.5 25 82 3 68 7 27 68 37 18 67 53 40 68 51 11 -0.60 - 26 0 0 68 12 12 15 25 26.3 25 81 3 67 57 12 68 27 14 67 43 20 68 41 12 -0.60 - 27 0 0 68 1 38 15 25 23.2 24 80 4 67 46 33 68 16 45 67 32 36 68 30 49 -0.60 - 28 0 0 67 50 39 15 25 20.0 24 79 4 67 35 28 68 5 52 67 21 26 68 20 0 -0.60 - 29 0 0 67 39 14 15 25 16.8 24 78 4 67 23 57 67 54 32 67 9 50 68 8 47 -0.60 - 30 0 0 67 27 22 15 25 13.7 23 77 4 67 12 0 67 42 47 66 57 47 67 57 6 -0.60 - 31 0 0 67 15 3 15 25 10.6 23 76 5 66 59 35 67 30 34 66 45 17 67 44 59 -0.61 - 32 0 0 67 2 16 15 25 7.4 22 75 5 66 46 42 67 17 54 66 32 18 67 32 25 -0.61 - 33 0 0 66 49 1 15 25 4.3 22 74 5 66 33 21 67 4 45 66 18 51 67 19 22 -0.61 - 34 0 0 66 35 17 15 25 1.2 21 73 6 66 19 29 66 51 7 66 4 54 67 5 50 -0.61 - 35 0 0 66 21 2 15 24 58.1 21 72 6 66 5 8 66 36 59 65 50 26 66 51 48 -0.61 - 36 0 0 66 6 16 15 24 55.0 20 71 6 65 50 16 66 22 20 65 35 27 66 37 16 -0.61 - 37 0 0 65 50 59 15 24 52.0 20 70 7 65 34 51 66 7 10 65 19 57 66 22 13 -0.61 - 38 0 0 65 35 9 15 24 48.9 20 69 7 65 18 54 65 51 27 65 3 53 66 6 37 -0.61 - 39 0 0 65 18 46 15 24 45.9 19 68 7 65 2 24 65 35 11 64 47 16 65 50 28 -0.61 - 40 0 0 65 1 49 15 24 42.9 19 67 8 64 45 19 65 18 22 64 30 5 65 33 45 -0.61 - 41 0 0 64 44 16 15 24 39.9 18 67 8 64 27 39 65 0 57 64 12 18 65 16 27 -0.62 - 42 0 0 64 26 8 15 24 37.0 17 66 8 64 9 23 64 42 56 63 53 54 64 58 34 -0.62 - 43 0 0 64 7 22 15 24 34.1 17 65 9 63 50 30 64 24 18 63 34 54 64 40 3 -0.62 - 44 0 0 63 47 59 15 24 31.2 16 64 9 63 30 58 64 5 3 63 15 15 64 20 55 -0.62 - 45 0 0 63 27 57 15 24 28.3 16 63 9 63 10 48 63 45 9 62 54 58 64 1 9 -0.62 - 46 0 0 63 7 14 15 24 25.5 15 62 10 62 49 58 63 24 35 62 34 0 63 40 42 -0.62 - 47 0 0 62 45 51 15 24 22.7 15 61 10 62 28 27 63 3 20 62 12 21 63 19 35 -0.63 - 48 0 0 62 23 46 15 24 20.0 14 60 11 62 6 13 62 41 23 61 50 1 62 57 47 -0.63 - 49 0 0 62 0 59 15 24 17.4 14 59 11 61 43 17 62 18 44 61 26 57 62 35 15 -0.63 - 50 0 0 61 37 27 15 24 14.8 13 58 11 61 19 37 61 55 21 61 3 9 62 12 0 -0.63 - 51 0 0 61 13 11 15 24 12.3 12 57 12 60 55 13 61 31 13 60 38 37 61 48 0 -0.63 - 52 0 0 60 48 9 15 24 9.8 12 56 12 60 30 2 61 6 19 60 13 18 61 23 15 -0.64 - 53 0 0 60 22 20 15 24 7.4 11 56 12 60 4 5 60 40 39 59 47 13 60 57 42 -0.64 - 54 0 0 59 55 43 15 24 5.2 10 55 13 59 37 20 60 14 11 59 20 21 60 31 22 -0.64 - 55 0 0 59 28 18 15 24 3.0 10 54 13 59 9 46 59 46 54 58 52 39 60 4 13 -0.65 - 56 0 0 59 0 3 15 24 0.9 9 53 14 58 41 23 59 18 48 58 24 8 59 36 15 -0.65 - 57 0 0 58 30 58 15 23 58.9 8 52 14 58 12 9 58 49 51 57 54 47 59 7 26 -0.66 - 58 0 0 58 1 1 15 23 57.1 8 51 14 57 42 5 58 20 3 57 24 35 58 37 46 -0.66 - 59 0 0 57 30 13 15 23 55.4 7 50 15 57 11 9 57 49 23 56 53 32 58 7 13 -0.67 - 60 0 0 56 58 32 15 23 53.8 6 49 15 56 39 20 57 17 50 56 21 36 57 35 48 -0.68 - 61 0 0 56 25 58 15 23 52.4 5 49 16 56 6 38 56 45 24 55 48 47 57 3 29 -0.69 - 62 0 0 55 52 30 15 23 51.1 4 48 16 55 33 3 56 12 4 55 15 5 56 30 16 -0.71 - 63 0 0 55 18 8 15 23 50.1 4 47 16 54 58 33 55 37 49 54 40 28 55 56 9 -0.74 - 64 0 0 54 42 52 15 23 49.2 3 46 17 54 23 10 55 2 40 54 4 58 55 21 6 -0.78 - 65 0 0 54 6 41 15 23 48.5 2 45 17 53 46 52 54 26 35 53 28 34 54 45 9 -0.85 - 66 0 0 53 29 34 15 23 48.1 1 44 18 53 9 39 53 49 36 52 51 15 54 8 15 -1.03 - 67 0 0 52 51 33 15 23 47.8 0 44 18 52 31 32 53 11 41 .. .. .. 53 30 27 -2.43 Uncertainty in time = +/- 4 secs Prediction of 2020 Dec 31.0 Data for the target star ------------------------ * name: UCAC4-582-011487 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 17 42.2528 DE: +26 14 04.003 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 17 42.2528 DE: +26 14 04.003 * position source: Gaia14_DR2 * standard error: RA,DE [mas]: (0.800,0.700) * V mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (500) Selinur asteroid class: approx. diameter [km]: 44 approx. diameter ["]: 0.031 distance from Earth [AU]: 1.93010 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: Preston date of fit: 2020 Nov 29 source of used astrometry: MPC, FASTT, TMO number of used observations: 2495 number of rejected observations: 13 time covered by the observations: 1960 Jun 26 - 2020 Oct 21 1 sigma uncertainty ellipse (major, minor, PA): 0.021", 0.010", 87.9° remarks: * orbital elements for (500)Selinur : Mean anomaly = 66.85993865 deg Arg. of pericenter = 74.82881017 deg Long. of node = 289.82992061 deg Inclination = 9.78109479 deg Eccentricity = 0.14385412 Semimajor axis = 2.61331780 AU Perihelion dist = 2.23738126 AU Mag: H = 9.30, G = 0.15 Epoch of elements : MJD 59245.65100000 TDT (2021 Jan 31.6510) ------ occelmnt file for Occult BEGIN ----------------------------------- Preston2020Nov29,6.1,2021,1,31,15.6120,0.26761,0.42437,3.40460,-2.12829,0.00519,0.00068,0.00000,0.00000 59.4915,26.2855,-50.81,-17.20,False UCAC4-582-011487,4.29507024,26.2344452,0.00,11.95,0.00,0.0,0,,4.31642973,26.2854960 500,Selinur,13.75,43.5,1.9301,0,0,1.154,-9.69,,2.4 0,66.7081,2021,1,31,74.8288,289.8299,9.7811,0.14385,2.61332,2.23738,9.30,5.0,0.15 1.464,0.0210,0.0100,88,0.0144,Known errors 20210131_011487,59214.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2020 Dec 31, 00:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org