IOTA/IOTA-ES occultation update for (585) Bilkis / UCAC4 527-013207 event on 2023 Mar 14, 00:31 UT Visible from SE Canada, NE USA Summary ------- On 2023 Mar 14 UT, the 56.5 km diameter asteroid (585) Bilkis will occult a 10.7 mag star in the constellation Orion for observers along a path across SE Canada, NE USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.16 mag to 14.86 mag (the magnitude of the asteroid) for at most 3.060 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. The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2023 Mar 14, 00:25 - 2023 Mar 14, 00:36 * geocentric midpoint of event [JD]: 2460017.52174438 * magnitude of target star: 10.72 * magnitude drop [mag]: 4.16 * estimated maximum duration [s]: 3.060 * Moon: 61 % sunlit, 164° distance * Sun: 89° distance * rough path description: SE Canada, NE USA The occultation path -------------------- * approximate projected width [km]: 62 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.003", 88°) * approx speed of asteroid's shadow [km/s]: 18.4579 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 527-013207 by 585 Bilkis on 2023 Mar 14 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 ' " Latitude Latitude Latitude Latitude 172 0 0 8 45 38 0 26 2.4 0 75 78 8 28 13 9 3 5 8 24 46 9 6 33 .... 173 0 0 9 2 21 0 26 2.5 1 75 78 8 44 54 9 19 50 8 41 27 9 23 18 -0.35 174 0 0 9 19 23 0 26 2.7 2 75 78 9 1 55 9 36 54 8 58 27 9 40 23 -0.40 175 0 0 9 36 45 0 26 3.1 3 75 78 9 19 15 9 54 18 9 15 47 9 57 47 -0.41 176 0 0 9 54 27 0 26 3.5 4 75 77 9 36 55 10 12 1 9 33 27 10 15 30 -0.42 177 0 0 10 12 27 0 26 4.1 5 75 77 9 54 54 10 30 2 9 51 25 10 33 32 -0.43 178 0 0 10 30 45 0 26 4.8 6 76 77 10 13 11 10 48 23 10 9 42 10 51 53 -0.43 179 0 0 10 49 22 0 26 5.6 7 76 76 10 31 46 11 7 1 10 28 17 11 10 32 -0.43 -180 0 0 11 8 17 0 26 6.6 8 76 76 10 50 39 11 25 58 10 47 9 11 29 28 -0.44 -179 0 0 11 27 29 0 26 7.7 10 76 75 11 9 49 11 45 11 11 6 19 11 48 43 -0.44 -178 0 0 11 46 58 0 26 8.9 11 76 74 11 29 17 12 4 42 11 25 47 12 8 14 -0.44 -177 0 0 12 6 44 0 26 10.2 12 77 74 11 49 1 12 24 30 11 45 31 12 28 2 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-0.45 -163 0 0 17 8 27 0 26 41.1 26 81 61 16 50 23 17 26 34 16 46 49 17 30 10 -0.45 -162 0 0 17 31 27 0 26 44.2 27 81 60 17 13 22 17 49 35 17 9 47 17 53 11 -0.45 -161 0 0 17 54 36 0 26 47.3 28 82 59 17 36 30 18 12 45 17 32 55 18 16 21 -0.45 -160 0 0 18 17 53 0 26 50.6 29 82 58 17 59 45 18 36 3 17 56 10 18 39 39 -0.45 -159 0 0 18 41 17 0 26 54.0 30 83 57 18 23 8 18 59 28 18 19 33 19 3 5 -0.45 -158 0 0 19 4 48 0 26 57.4 31 83 56 18 46 38 19 23 0 18 43 3 19 26 37 -0.45 -157 0 0 19 28 25 0 27 1.0 32 84 55 19 10 15 19 46 38 19 6 39 19 50 16 -0.45 -156 0 0 19 52 8 0 27 4.7 33 84 54 19 33 56 20 10 22 19 30 20 20 13 59 -0.45 -155 0 0 20 15 56 0 27 8.4 34 85 53 19 57 43 20 34 11 19 54 7 20 37 48 -0.45 -154 0 0 20 39 48 0 27 12.3 35 85 52 20 21 35 20 58 4 20 17 58 21 1 42 -0.45 -153 0 0 21 3 44 0 27 16.2 36 86 51 20 45 30 21 22 0 20 41 53 21 25 38 -0.45 -152 0 0 21 27 43 0 27 20.3 37 87 50 21 9 28 21 46 0 21 5 51 21 49 38 -0.45 -151 0 0 21 51 44 0 27 24.4 38 87 49 21 33 29 22 10 2 21 29 52 22 13 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31 34 35 32 18 6 -0.45 -124 0 0 32 17 36 0 29 37.2 60 118 23 31 59 29 32 35 45 31 55 54 32 39 22 -0.45 -123 0 0 32 38 40 0 29 42.5 61 120 22 32 20 34 32 56 48 32 16 59 33 0 24 -0.45 -122 0 0 32 59 30 0 29 47.9 61 122 21 32 41 26 33 17 37 32 37 51 33 21 13 -0.45 -121 0 0 33 20 6 0 29 53.2 62 124 20 33 2 3 33 38 12 32 58 29 33 41 48 -0.45 -120 0 0 33 40 28 0 29 58.6 62 126 19 33 22 27 33 58 33 33 18 52 34 2 8 -0.45 -119 0 0 34 0 36 0 30 3.9 63 128 18 33 42 35 34 18 39 33 39 1 34 22 14 -0.45 -118 0 0 34 20 28 0 30 9.3 63 130 17 34 2 29 34 38 29 33 58 55 34 42 4 -0.45 -117 0 0 34 40 4 0 30 14.6 63 132 16 34 22 7 34 58 5 34 18 33 35 1 39 -0.45 -116 0 0 34 59 25 0 30 19.9 64 134 15 34 41 29 35 17 24 34 37 56 35 20 59 -0.45 -115 0 0 35 18 31 0 30 25.2 64 136 14 35 0 36 35 36 28 34 57 3 35 40 2 -0.45 -114 0 0 35 37 20 0 30 30.5 65 139 14 35 19 27 35 55 15 35 15 54 35 58 49 -0.45 -113 0 0 35 55 52 0 30 35.8 65 141 13 35 38 1 36 13 46 35 34 29 36 17 20 -0.45 -112 0 0 36 14 8 0 30 41.1 65 143 12 35 56 18 36 32 1 35 52 46 36 35 34 -0.45 -111 0 0 36 32 7 0 30 46.3 65 146 11 36 14 19 36 49 58 36 10 47 36 53 31 -0.45 -110 0 0 36 49 49 0 30 51.6 66 148 10 36 32 3 37 7 38 36 28 31 37 11 11 -0.45 -109 0 0 37 7 14 0 30 56.8 66 151 9 36 49 29 37 25 1 36 45 58 37 28 33 -0.45 -108 0 0 37 24 21 0 31 2.0 66 153 8 37 6 38 37 42 7 37 3 7 37 45 38 -0.45 -107 0 0 37 41 10 0 31 7.1 66 156 7 37 23 29 37 58 54 37 19 59 38 2 26 -0.45 -106 0 0 37 57 42 0 31 12.3 66 159 7 37 40 3 38 15 25 37 36 33 38 18 56 -0.45 -105 0 0 38 13 56 0 31 17.4 66 161 6 37 56 18 38 31 37 37 52 49 38 35 8 -0.45 -104 0 0 38 29 52 0 31 22.5 66 164 5 38 12 16 38 47 31 38 8 47 38 51 1 -0.45 -103 0 0 38 45 30 0 31 27.6 66 166 4 38 27 55 39 3 7 38 24 26 39 6 37 -0.45 -102 0 0 39 0 49 0 31 32.6 66 169 3 38 43 16 39 18 25 38 39 48 39 21 54 -0.45 -101 0 0 39 15 50 0 31 37.6 66 171 2 38 58 19 39 33 24 38 54 51 39 36 53 -0.45 -100 0 0 39 30 33 0 31 42.6 66 174 2 39 13 4 39 48 5 39 9 36 39 51 34 -0.44 - 99 0 0 39 44 57 0 31 47.5 65 176 1 39 27 29 40 2 27 39 24 2 40 5 56 -0.44 - 98 0 0 39 59 3 0 31 52.4 65 178 0 39 41 37 40 16 31 39 38 9 40 19 59 -0.44 - 97 0 0 40 12 49 0 31 57.3 65 181 -1 39 55 25 40 30 16 39 51 58 40 33 44 -0.44 - 96 0 0 40 26 18 0 32 2.2 65 183 -1 40 8 55 40 43 43 40 5 28 40 47 10 -0.44 - 95 0 0 40 39 27 0 32 7.0 65 185 -2 40 22 6 40 56 50 40 18 40 41 0 18 -0.44 - 94 0 0 40 52 18 0 32 11.7 64 188 -3 40 34 58 41 9 39 40 31 32 41 13 6 -0.44 - 93 0 0 41 4 49 0 32 16.5 64 190 -4 40 47 32 41 22 9 40 44 6 41 25 36 -0.44 - 92 0 0 41 17 2 0 32 21.2 64 192 -5 40 59 46 41 34 21 40 56 21 41 37 47 -0.44 - 91 0 0 41 28 56 0 32 25.9 63 194 -5 41 11 42 41 46 13 41 8 17 41 49 39 -0.44 - 90 0 0 41 40 32 0 32 30.5 63 196 -6 41 23 19 41 57 47 41 19 54 42 1 12 -0.44 - 89 0 0 41 51 48 0 32 35.1 62 198 -7 41 34 37 42 9 1 41 31 12 42 12 27 -0.44 - 88 0 0 42 2 45 0 32 39.6 62 200 -8 41 45 36 42 19 57 41 42 12 42 23 22 -0.44 - 87 0 0 42 13 24 0 32 44.2 62 202 -8 41 56 16 42 30 34 41 52 52 42 33 59 -0.44 - 86 0 0 42 23 44 0 32 48.6 61 204 -9 42 6 37 42 40 53 42 3 14 42 44 17 -0.44 - 85 0 0 42 33 45 0 32 53.1 61 206 -10 42 16 39 42 50 52 42 13 16 42 54 16 -0.44 - 84 0 0 42 43 27 0 32 57.5 60 207 -11 42 26 23 43 0 33 42 23 0 43 3 56 -0.44 - 83 0 0 42 52 50 0 33 1.8 60 209 -11 42 35 47 43 9 54 42 32 25 43 13 18 -0.44 - 82 0 0 43 1 54 0 33 6.2 59 211 -12 42 44 53 43 18 57 42 41 31 43 22 21 -0.44 - 81 0 0 43 10 40 0 33 10.5 59 212 -13 42 53 40 43 27 42 42 50 18 43 31 5 -0.44 - 80 0 0 43 19 7 0 33 14.7 58 214 -13 43 2 8 43 36 7 42 58 46 43 39 30 -0.44 - 79 0 0 43 27 15 0 33 18.9 58 215 -14 43 10 18 43 44 14 43 6 56 43 47 37 -0.44 - 78 0 0 43 35 4 0 33 23.1 57 217 -15 43 18 8 43 52 2 43 14 47 43 55 25 -0.44 - 77 0 0 43 42 35 0 33 27.2 56 218 -16 43 25 40 43 59 32 43 22 19 44 2 54 -0.44 - 76 0 0 43 49 47 0 33 31.3 56 220 -16 43 32 53 44 6 43 43 29 33 44 10 5 -0.44 - 75 0 0 43 56 41 0 33 35.4 55 221 -17 43 39 48 44 13 35 43 36 27 44 16 57 -0.44 - 74 0 0 44 3 16 0 33 39.4 55 223 -18 43 46 24 44 20 9 43 43 4 44 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44 44 13 45 17 39 44 40 54 45 20 59 -0.44 - 60 0 0 45 3 13 0 34 31.3 46 240 -27 44 46 31 45 19 57 44 43 13 45 23 17 -0.44 - 59 0 0 45 5 13 0 34 34.7 46 241 -27 44 48 32 45 21 57 44 45 13 45 25 17 -0.44 - 58 0 0 45 6 55 0 34 38.1 45 242 -28 44 50 14 45 23 39 44 46 56 45 26 58 -0.44 - 57 0 0 45 8 19 0 34 41.4 44 243 -29 44 51 38 45 25 3 44 48 20 45 28 22 -0.44 - 56 0 0 45 9 25 0 34 44.7 44 244 -29 44 52 44 45 26 9 44 49 26 45 29 28 -0.44 - 55 0 0 45 10 13 0 34 48.0 43 245 -30 44 53 32 45 26 56 44 50 14 45 30 16 -0.44 - 54 0 0 45 10 43 0 34 51.2 42 246 -31 44 54 2 45 27 26 44 50 44 45 30 45 -0.45 - 53 0 0 45 10 55 0 34 54.4 42 247 -31 44 54 14 45 27 38 44 50 55 45 30 57 -0.45 - 52 0 0 45 10 48 0 34 57.5 41 248 -32 44 54 8 45 27 32 44 50 49 45 30 51 -0.45 - 51 0 0 45 10 24 0 35 0.6 40 249 -32 44 53 43 45 27 7 44 50 25 45 30 27 -0.45 - 50 0 0 45 9 42 0 35 3.6 40 250 -33 44 53 1 45 26 25 44 49 42 45 29 45 -0.45 - 49 0 0 45 8 42 0 35 6.6 39 250 -34 44 52 0 45 25 25 44 48 42 45 28 45 -0.45 - 48 0 0 45 7 23 0 35 9.6 38 251 -34 44 50 42 45 24 7 44 47 23 45 27 27 -0.45 - 47 0 0 45 5 47 0 35 12.5 38 252 -35 44 49 5 45 22 31 44 45 47 45 25 51 -0.45 - 46 0 0 45 3 53 0 35 15.4 37 253 -35 44 47 11 45 20 37 44 43 52 45 23 57 -0.45 - 45 0 0 45 1 41 0 35 18.2 36 254 -36 44 44 58 45 18 26 44 41 39 45 21 45 -0.45 - 44 0 0 44 59 10 0 35 21.0 36 255 -36 44 42 27 45 15 56 44 39 8 45 19 16 -0.45 - 43 0 0 44 56 22 0 35 23.8 35 256 -37 44 39 39 45 13 8 44 36 20 45 16 28 -0.45 - 42 0 0 44 53 16 0 35 26.5 34 257 -38 44 36 32 45 10 2 44 33 13 45 13 22 -0.45 - 41 0 0 44 49 52 0 35 29.1 34 258 -38 44 33 7 45 6 39 44 29 48 45 9 59 -0.45 - 40 0 0 44 46 10 0 35 31.8 33 258 -39 44 29 24 45 2 57 44 26 5 45 6 17 -0.45 - 39 0 0 44 42 9 0 35 34.3 32 259 -39 44 25 23 44 58 58 44 22 4 45 2 18 -0.45 - 38 0 0 44 37 51 0 35 36.9 32 260 -40 44 21 4 44 54 40 44 17 44 44 58 0 -0.45 - 37 0 0 44 33 14 0 35 39.3 31 261 -40 44 16 27 44 50 4 44 13 7 44 53 25 -0.45 - 36 0 0 44 28 20 0 35 41.8 30 262 -41 44 11 31 44 45 11 44 8 12 44 48 32 -0.45 - 35 0 0 44 23 7 0 35 44.2 30 262 -41 44 6 18 44 39 59 44 2 58 44 43 20 -0.45 - 34 0 0 44 17 37 0 35 46.5 29 263 -42 44 0 46 44 34 29 43 57 26 44 37 51 -0.45 - 33 0 0 44 11 48 0 35 48.8 28 264 -42 43 54 57 44 28 42 43 51 36 44 32 3 -0.45 - 32 0 0 44 5 41 0 35 51.1 27 265 -43 43 48 49 44 22 36 43 45 28 44 25 58 -0.45 - 31 0 0 43 59 16 0 35 53.3 27 266 -44 43 42 23 44 16 12 43 39 2 44 19 34 -0.45 - 30 0 0 43 52 33 0 35 55.5 26 266 -44 43 35 39 44 9 30 43 32 18 44 12 52 -0.45 - 29 0 0 43 45 32 0 35 57.6 25 267 -44 43 28 36 44 2 30 43 25 15 44 5 52 -0.45 - 28 0 0 43 38 13 0 35 59.6 25 268 -45 43 21 16 43 55 12 43 17 54 43 58 34 -0.45 - 27 0 0 43 30 35 0 36 1.6 24 269 -45 43 13 37 43 47 35 43 10 15 43 50 58 -0.45 - 26 0 0 43 22 39 0 36 3.6 23 269 -46 43 5 40 43 39 41 43 2 18 43 43 4 -0.45 - 25 0 0 43 14 26 0 36 5.5 22 270 -46 42 57 25 43 31 28 42 54 3 43 34 52 -0.46 - 24 0 0 43 5 54 0 36 7.4 22 271 -47 42 48 52 43 22 58 42 45 29 43 26 21 -0.46 - 23 0 0 42 57 3 0 36 9.2 21 272 -47 42 40 0 43 14 9 42 36 37 43 17 33 -0.46 - 22 0 0 42 47 55 0 36 10.9 20 272 -48 42 30 50 43 5 2 42 27 27 43 8 26 -0.46 - 21 0 0 42 38 28 0 36 12.6 19 273 -48 42 21 22 42 55 37 42 17 59 42 59 1 -0.46 - 20 0 0 42 28 43 0 36 14.2 19 274 -49 42 11 36 42 45 53 42 8 12 42 49 18 -0.46 - 19 0 0 42 18 40 0 36 15.8 18 275 -49 42 1 32 42 35 52 41 58 8 42 39 16 -0.46 - 18 0 0 42 8 19 0 36 17.3 17 275 -49 41 51 9 42 25 32 41 47 45 42 28 57 -0.46 - 17 0 0 41 57 40 0 36 18.8 16 276 -50 41 40 28 42 14 54 41 37 4 42 18 20 -0.46 - 16 0 0 41 46 43 0 36 20.2 16 277 -50 41 29 29 42 3 58 41 26 5 42 7 24 -0.46 - 15 0 0 41 35 27 0 36 21.6 15 277 -51 41 18 12 41 52 44 41 14 47 41 56 10 -0.46 - 14 0 0 41 23 53 0 36 22.8 14 278 -51 41 6 37 41 41 12 41 3 12 41 44 39 -0.47 - 13 0 0 41 12 2 0 36 24.1 13 279 -51 40 54 44 41 29 22 40 51 18 41 32 49 -0.47 - 12 0 0 40 59 52 0 36 25.2 12 279 -52 40 42 32 41 17 14 40 39 6 41 20 41 -0.47 - 11 0 0 40 47 24 0 36 26.3 12 280 -52 40 30 3 41 4 48 40 26 37 41 8 15 -0.47 - 10 0 0 40 34 39 0 36 27.4 11 281 -52 40 17 16 40 52 4 40 13 49 40 55 31 -0.47 - 9 0 0 40 21 35 0 36 28.3 10 281 -52 40 4 11 40 39 2 40 0 44 40 42 30 -0.48 - 8 0 0 40 8 14 0 36 29.2 9 282 -53 39 50 48 40 25 42 39 47 21 40 29 11 -0.48 - 7 0 0 39 54 35 0 36 30.0 9 283 -53 39 37 7 40 12 5 39 33 40 40 15 33 -0.48 - 6 0 0 39 40 38 0 36 30.8 8 283 -53 39 23 9 39 58 10 39 19 41 40 1 39 -0.49 - 5 0 0 39 26 24 0 36 31.5 7 284 -53 39 8 53 39 43 57 39 5 25 39 47 26 -0.49 - 4 0 0 39 11 52 0 36 32.1 6 285 -54 38 54 19 39 29 27 38 50 51 39 32 57 -0.50 - 3 0 0 38 57 3 0 36 32.6 5 285 -54 38 39 29 39 14 39 38 36 0 39 18 9 -0.50 - 2 0 0 38 41 56 0 36 33.1 4 286 -54 38 24 21 38 59 35 38 20 51 39 3 5 -0.52 - 1 0 0 38 26 33 0 36 33.5 4 287 -54 38 8 55 38 44 13 38 5 26 38 47 43 -0.53 0 0 0 38 10 52 0 36 33.8 3 287 -54 37 53 13 38 28 34 37 49 43 38 32 4 -0.56 1 0 0 37 54 55 0 36 34.0 2 288 -54 37 37 14 38 12 38 37 33 44 38 16 9 -0.60 2 0 0 37 38 40 0 36 34.2 1 288 -54 37 20 58 37 56 25 37 17 28 37 59 56 -0.72 3 0 0 37 22 9 0 36 34.3 0 289 -54 37 4 26 37 39 56 37 0 55 37 43 27 -1.51 Uncertainty in time = +/- 1 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 527-013207 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 26 40.4188 DE: +15 12 37.395 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 26 40.4186 DE: +15 12 37.395 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (585) Bilkis asteroid class: approx. diameter [km]: 57 approx. diameter ["]: 0.040 distance from Earth [AU]: 1.95620 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#73 date of fit: 2023 Feb 07 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.010", 0.003", 87.666° remarks: * orbital elements for (585)Bilkis : Mean anomaly = 327.7923648059 deg Arg. of pericenter = 330.1502804952 deg Long. of node = 180.1857127205 deg Inclination = 7.5814769895 deg Eccentricity = 0.1285138567 Semimajor axis = 2.4301723594 AU Perihelion dist = 2.1178615371 AU Mag: H = 10.47, G = 0.15 Epoch of elements : MJD 60017.02173611 TDT (2023 Mar 14.0217) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#732023Feb07,3.06,2023,3,14,0.521865,-0.103033,0.390155,10.070172,2.670148,0.005503,0.000302,0.000000,0.000000 -97.2073,15.2299,174.52,-2.71,False UCAC4 527-013207,5.44456081,15.2103876,0.00,10.72,0.00,0.0,0,,5.46650370,15.2299414,4.16,0.00,0,0,1 585,Bilkis,14.86,56.5,1.9562,0,0,3.129,12.00,,2.8,0 0,327.5265,2023,3,13,330.1503,180.1857,7.5815,0.12851,2.43017,2.11786,10.49,5.0,0.15 1.099,0.0103,0.0033,88,0.0040,Known errors,-1.00,-1,-1,-1 20230314_013207,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org