IOTA/IOTA-ES occultation update for (540) Rosamunde / UCAC4 522-018574 event on 2024 Dec 15, 16:19 UT Visible from Summary ------- On 2024 Dec 15 UT, the 18.43 km diameter asteroid (540) Rosamunde will occult a 12.0 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.63 mag to 13.31 mag (the magnitude of the asteroid) for at most 1.820 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: 99 * date and approx. time of event: 2024 Dec 15, 16:11 - 2024 Dec 15, 16:26 * geocentric midpoint of event [JD]: 2460660.17996054 * magnitude of target star: 11.96 * magnitude drop [mag]: 1.63 * estimated maximum duration [s]: 1.820 * Moon: 100 % sunlit, 14° distance * Sun: 169° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 27 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.005", 90°) * approx speed of asteroid's shadow [km/s]: 10.1483 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 522-018574 by 540 Rosamunde on 2024 Dec 15 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 48 0 0 -52 34 37 16 26 10.5 0 66 4 -52 26 27 .. .. .. -52 21 46 .. .. .. .... 49 0 0 -52 18 12 16 26 10.4 1 65 3 -52 10 1 -52 26 24 -52 5 21 -52 31 7 0.33 50 0 0 -52 1 39 16 26 10.2 1 64 3 -51 53 28 -52 9 51 -51 48 48 -52 14 34 0.71 51 0 0 -51 44 59 16 26 9.9 2 64 2 -51 36 47 -51 53 11 -51 32 7 -51 57 54 0.84 52 0 0 -51 28 11 16 26 9.5 3 63 1 -51 19 59 -51 36 23 -51 15 19 -51 41 6 0.91 53 0 0 -51 11 16 16 26 8.9 3 62 1 -51 3 5 -51 19 29 -50 58 24 -51 24 11 0.95 54 0 0 -50 54 15 16 26 8.1 4 61 0 -50 46 3 -51 2 27 -50 41 23 -51 7 10 0.98 55 0 0 -50 37 7 16 26 7.3 5 61 -1 -50 28 56 -50 45 20 -50 24 15 -50 50 3 1.00 56 0 0 -50 19 54 16 26 6.3 5 60 -1 -50 11 43 -50 28 7 -50 7 2 -50 32 49 1.01 57 0 0 -50 2 35 16 26 5.1 6 59 -2 -49 54 24 -50 10 48 -49 49 44 -50 15 31 1.03 58 0 0 -49 45 12 16 26 3.8 7 58 -3 -49 37 1 -49 53 24 -49 32 20 -49 58 7 1.03 59 0 0 -49 27 43 16 26 2.4 8 57 -3 -49 19 32 -49 35 56 -49 14 52 -49 40 38 1.04 60 0 0 -49 10 11 16 26 0.8 8 57 -4 -49 2 0 -49 18 23 -48 57 20 -49 23 6 1.05 61 0 0 -48 52 35 16 25 59.1 9 56 -5 -48 44 24 -49 0 47 -48 39 44 -49 5 29 1.05 62 0 0 -48 34 55 16 25 57.2 10 55 -5 -48 26 44 -48 43 7 -48 22 4 -48 47 49 1.06 63 0 0 -48 17 12 16 25 55.1 10 54 -6 -48 9 2 -48 25 24 -48 4 22 -48 30 6 1.06 64 0 0 -47 59 27 16 25 52.9 11 54 -7 -47 51 17 -48 7 38 -47 46 37 -48 12 20 1.07 65 0 0 -47 41 40 16 25 50.6 12 53 -7 -47 33 30 -47 49 51 -47 28 50 -47 54 32 1.07 66 0 0 -47 23 51 16 25 48.1 13 52 -8 -47 15 41 -47 32 1 -47 11 2 -47 36 43 1.07 67 0 0 -47 6 0 16 25 45.4 13 51 -9 -46 57 52 -47 14 11 -46 53 12 -47 18 52 1.07 68 0 0 -46 48 9 16 25 42.6 14 51 -9 -46 40 1 -46 56 19 -46 35 22 -47 1 0 1.08 69 0 0 -46 30 18 16 25 39.6 15 50 -10 -46 22 10 -46 38 28 -46 17 32 -46 43 8 1.08 70 0 0 -46 12 27 16 25 36.5 15 49 -11 -46 4 20 -46 20 36 -45 59 41 -46 25 17 1.08 71 0 0 -45 54 37 16 25 33.2 16 48 -11 -45 46 30 -46 2 45 -45 41 51 -46 7 25 1.08 72 0 0 -45 36 47 16 25 29.7 17 47 -12 -45 28 41 -45 44 55 -45 24 3 -45 49 35 1.08 73 0 0 -45 18 59 16 25 26.1 18 47 -13 -45 10 53 -45 27 7 -45 6 16 -45 31 46 1.09 74 0 0 -45 1 13 16 25 22.3 18 46 -13 -44 53 8 -45 9 20 -44 48 31 -45 13 59 1.09 75 0 0 -44 43 30 16 25 18.4 19 45 -14 -44 35 25 -44 51 36 -44 30 48 -44 56 15 1.09 76 0 0 -44 25 49 16 25 14.3 20 44 -15 -44 17 45 -44 33 55 -44 13 8 -44 38 33 1.09 77 0 0 -44 8 12 16 25 10.1 20 44 -15 -44 0 8 -44 16 17 -43 55 32 -44 20 55 1.09 78 0 0 -43 50 38 16 25 5.7 21 43 -16 -43 42 35 -43 58 42 -43 37 59 -44 3 20 1.09 79 0 0 -43 33 8 16 25 1.1 22 42 -16 -43 25 6 -43 41 12 -43 20 30 -43 45 50 1.09 80 0 0 -43 15 44 16 24 56.4 22 41 -17 -43 7 42 -43 23 47 -43 3 7 -43 28 24 1.09 81 0 0 -42 58 24 16 24 51.5 23 40 -18 -42 50 23 -43 6 26 -42 45 48 -43 11 3 1.09 82 0 0 -42 41 10 16 24 46.5 24 39 -18 -42 33 9 -42 49 12 -42 28 35 -42 53 48 1.09 83 0 0 -42 24 2 16 24 41.4 24 39 -19 -42 16 2 -42 32 3 -42 11 28 -42 36 39 1.09 84 0 0 -42 7 0 16 24 36.0 25 38 -20 -41 59 1 -42 15 0 -41 54 28 -42 19 36 1.09 85 0 0 -41 50 5 16 24 30.6 26 37 -20 -41 42 7 -41 58 5 -41 37 34 -42 2 40 1.10 86 0 0 -41 33 18 16 24 25.0 26 36 -21 -41 25 20 -41 41 16 -41 20 48 -41 45 51 1.10 87 0 0 -41 16 38 16 24 19.2 27 35 -21 -41 8 41 -41 24 36 -41 4 9 -41 29 10 1.10 88 0 0 -41 0 6 16 24 13.3 28 34 -22 -40 52 10 -41 8 3 -40 47 38 -41 12 37 1.10 89 0 0 -40 43 43 16 24 7.3 28 33 -22 -40 35 48 -40 51 39 -40 31 16 -40 56 12 1.10 90 0 0 -40 27 28 16 24 1.1 29 33 -23 -40 19 34 -40 35 24 -40 15 3 -40 39 57 1.10 91 0 0 -40 11 23 16 23 54.8 30 32 -23 -40 3 30 -40 19 18 -39 58 59 -40 23 50 1.10 92 0 0 -39 55 28 16 23 48.4 30 31 -24 -39 47 35 -40 3 22 -39 43 5 -40 7 54 1.10 93 0 0 -39 39 43 16 23 41.8 31 30 -24 -39 31 51 -39 47 36 -39 27 21 -39 52 7 1.10 94 0 0 -39 24 8 16 23 35.1 31 29 -25 -39 16 17 -39 32 0 -39 11 48 -39 36 31 1.10 95 0 0 -39 8 44 16 23 28.3 32 28 -25 -39 0 53 -39 16 35 -38 56 25 -39 21 6 1.10 96 0 0 -38 53 31 16 23 21.4 33 27 -26 -38 45 41 -39 1 22 -38 41 13 -39 5 52 1.10 97 0 0 -38 38 30 16 23 14.3 33 26 -26 -38 30 41 -38 46 20 -38 26 13 -38 50 49 1.10 98 0 0 -38 23 40 16 23 7.1 34 25 -27 -38 15 52 -38 31 30 -38 11 25 -38 35 59 1.10 99 0 0 -38 9 3 16 22 59.9 34 24 -27 -38 1 16 -38 16 52 -37 56 49 -38 21 20 1.10 100 0 0 -37 54 39 16 22 52.5 35 23 -28 -37 46 52 -38 2 26 -37 42 26 -38 6 55 1.10 101 0 0 -37 40 27 16 22 45.0 35 22 -28 -37 32 41 -37 48 14 -37 28 15 -37 52 42 1.10 102 0 0 -37 26 29 16 22 37.4 36 21 -28 -37 18 44 -37 34 15 -37 14 18 -37 38 42 1.10 103 0 0 -37 12 44 16 22 29.7 36 20 -29 -37 4 59 -37 20 29 -37 0 34 -37 24 56 1.10 104 0 0 -36 59 12 16 22 21.8 37 19 -29 -36 51 29 -37 6 57 -36 47 4 -37 11 23 1.10 105 0 0 -36 45 55 16 22 14.0 37 18 -30 -36 38 13 -36 53 39 -36 33 49 -36 58 5 1.10 106 0 0 -36 32 53 16 22 6.0 38 17 -30 -36 25 11 -36 40 36 -36 20 47 -36 45 1 1.10 107 0 0 -36 20 5 16 21 57.9 38 16 -30 -36 12 24 -36 27 47 -36 8 0 -36 32 12 1.10 108 0 0 -36 7 32 16 21 49.8 38 14 -30 -35 59 51 -36 15 13 -35 55 28 -36 19 38 1.10 109 0 0 -35 55 14 16 21 41.5 39 13 -31 -35 47 34 -36 2 55 -35 43 12 -36 7 19 1.10 110 0 0 -35 43 12 16 21 33.2 39 12 -31 -35 35 33 -35 50 52 -35 31 11 -35 55 16 1.10 111 0 0 -35 31 25 16 21 24.9 40 11 -31 -35 23 47 -35 39 5 -35 19 25 -35 43 28 1.10 112 0 0 -35 19 55 16 21 16.4 40 10 -31 -35 12 17 -35 27 33 -35 7 56 -35 31 56 1.10 113 0 0 -35 8 40 16 21 7.9 40 9 -32 -35 1 3 -35 16 18 -34 56 42 -35 20 41 1.10 114 0 0 -34 57 42 16 20 59.4 40 7 -32 -34 50 6 -35 5 20 -34 45 45 -35 9 42 1.10 115 0 0 -34 47 1 16 20 50.8 41 6 -32 -34 39 25 -34 54 38 -34 35 5 -34 59 0 1.10 116 0 0 -34 36 37 16 20 42.1 41 5 -32 -34 29 2 -34 44 13 -34 24 42 -34 48 34 1.10 117 0 0 -34 26 29 16 20 33.4 41 4 -32 -34 18 55 -34 34 5 -34 14 35 -34 38 26 1.10 118 0 0 -34 16 39 16 20 24.6 41 3 -32 -34 9 5 -34 24 14 -34 4 46 -34 28 35 1.10 119 0 0 -34 7 7 16 20 15.9 42 1 -32 -33 59 34 -34 14 41 -33 55 15 -34 19 2 1.10 120 0 0 -33 57 52 16 20 7.0 42 0 -33 -33 50 20 -34 5 26 -33 46 1 -34 9 46 1.10 121 0 0 -33 48 55 16 19 58.2 42 359 -33 -33 41 23 -33 56 29 -33 37 5 -34 0 48 1.10 122 0 0 -33 40 16 16 19 49.3 42 358 -33 -33 32 45 -33 47 49 -33 28 27 -33 52 9 1.10 123 0 0 -33 31 56 16 19 40.4 42 356 -33 -33 24 25 -33 39 28 -33 20 7 -33 43 47 1.10 124 0 0 -33 23 54 16 19 31.5 42 355 -33 -33 16 23 -33 31 25 -33 12 6 -33 35 44 1.10 125 0 0 -33 16 10 16 19 22.5 42 354 -33 -33 8 40 -33 23 41 -33 4 23 -33 28 0 1.10 126 0 0 -33 8 45 16 19 13.6 42 352 -33 -33 1 15 -33 16 16 -32 56 58 -33 20 34 1.10 127 0 0 -33 1 39 16 19 4.6 42 351 -32 -32 54 9 -33 9 9 -32 49 53 -33 13 27 1.10 128 0 0 -32 54 51 16 18 55.7 42 350 -32 -32 47 23 -33 2 21 -32 43 6 -33 6 39 1.10 129 0 0 -32 48 23 16 18 46.7 42 349 -32 -32 40 55 -32 55 53 -32 36 39 -33 0 11 1.10 130 0 0 -32 42 14 16 18 37.8 42 347 -32 -32 34 46 -32 49 44 -32 30 30 -32 54 1 1.10 131 0 0 -32 36 25 16 18 28.9 42 346 -32 -32 28 57 -32 43 54 -32 24 41 -32 48 11 1.10 132 0 0 -32 30 55 16 18 20.0 42 345 -32 -32 23 27 -32 38 23 -32 19 12 -32 42 40 1.10 133 0 0 -32 25 44 16 18 11.1 42 344 -32 -32 18 17 -32 33 12 -32 14 2 -32 37 29 1.10 134 0 0 -32 20 53 16 18 2.2 42 342 -31 -32 13 26 -32 28 21 -32 9 11 -32 32 38 1.10 135 0 0 -32 16 22 16 17 53.3 41 341 -31 -32 8 56 -32 23 50 -32 4 40 -32 28 6 1.10 136 0 0 -32 12 11 16 17 44.5 41 340 -31 -32 4 45 -32 19 38 -32 0 30 -32 23 55 1.10 137 0 0 -32 8 20 16 17 35.7 41 339 -31 -32 0 53 -32 15 47 -31 56 39 -32 20 3 1.10 138 0 0 -32 4 48 16 17 27.0 41 338 -30 -31 57 22 -32 12 15 -31 53 8 -32 16 31 1.10 139 0 0 -32 1 37 16 17 18.3 41 336 -30 -31 54 11 -32 9 4 -31 49 57 -32 13 20 1.10 140 0 0 -31 58 46 16 17 9.6 40 335 -30 -31 51 21 -32 6 13 -31 47 6 -32 10 29 1.10 141 0 0 -31 56 16 16 17 1.0 40 334 -29 -31 48 50 -32 3 42 -31 44 36 -32 7 58 1.10 142 0 0 -31 54 5 16 16 52.5 40 333 -29 -31 46 40 -32 1 32 -31 42 26 -32 5 48 1.10 143 0 0 -31 52 15 16 16 44.0 39 332 -29 -31 44 50 -31 59 42 -31 40 36 -32 3 57 1.10 144 0 0 -31 50 46 16 16 35.6 39 331 -28 -31 43 21 -31 58 12 -31 39 6 -32 2 28 1.10 145 0 0 -31 49 37 16 16 27.2 38 330 -28 -31 42 12 -31 57 3 -31 37 57 -32 1 19 1.10 146 0 0 -31 48 48 16 16 18.9 38 329 -27 -31 41 23 -31 56 14 -31 37 9 -32 0 30 1.10 147 0 0 -31 48 20 16 16 10.7 38 328 -27 -31 40 55 -31 55 46 -31 36 41 -32 0 2 1.10 148 0 0 -31 48 12 16 16 2.6 37 327 -27 -31 40 47 -31 55 39 -31 36 33 -31 59 54 1.10 149 0 0 -31 48 26 16 15 54.5 37 325 -26 -31 41 0 -31 55 52 -31 36 46 -32 0 8 1.10 150 0 0 -31 48 59 16 15 46.5 36 324 -26 -31 41 34 -31 56 26 -31 37 20 -32 0 41 1.11 151 0 0 -31 49 54 16 15 38.7 36 323 -25 -31 42 28 -31 57 20 -31 38 14 -32 1 36 1.11 152 0 0 -31 51 9 16 15 30.9 35 323 -25 -31 43 43 -31 58 35 -31 39 29 -32 2 51 1.11 153 0 0 -31 52 44 16 15 23.2 35 322 -24 -31 45 19 -32 0 11 -31 41 4 -32 4 27 1.11 154 0 0 -31 54 41 16 15 15.6 34 321 -24 -31 47 15 -32 2 8 -31 43 0 -32 6 24 1.11 155 0 0 -31 56 58 16 15 8.1 34 320 -23 -31 49 32 -32 4 25 -31 45 17 -32 8 41 1.11 156 0 0 -31 59 35 16 15 0.7 33 319 -22 -31 52 9 -32 7 2 -31 47 54 -32 11 19 1.11 157 0 0 -32 2 33 16 14 53.5 32 318 -22 -31 55 7 -32 10 1 -31 50 52 -32 14 17 1.11 158 0 0 -32 5 52 16 14 46.3 32 317 -21 -31 58 25 -32 13 20 -31 54 10 -32 17 36 1.11 159 0 0 -32 9 31 16 14 39.3 31 316 -21 -32 2 4 -32 16 59 -31 57 49 -32 21 16 1.11 160 0 0 -32 13 31 16 14 32.3 31 315 -20 -32 6 3 -32 20 59 -32 1 48 -32 25 16 1.11 161 0 0 -32 17 51 16 14 25.6 30 315 -19 -32 10 23 -32 25 19 -32 6 7 -32 29 37 1.11 162 0 0 -32 22 31 16 14 18.9 29 314 -19 -32 15 3 -32 30 0 -32 10 47 -32 34 18 1.11 163 0 0 -32 27 32 16 14 12.4 29 313 -18 -32 20 4 -32 35 1 -32 15 48 -32 39 19 1.11 164 0 0 -32 32 53 16 14 6.0 28 312 -17 -32 25 24 -32 40 23 -32 21 8 -32 44 41 1.11 165 0 0 -32 38 34 16 13 59.7 27 311 -17 -32 31 5 -32 46 5 -32 26 49 -32 50 23 1.11 166 0 0 -32 44 36 16 13 53.6 27 311 -16 -32 37 6 -32 52 6 -32 32 49 -32 56 25 1.11 167 0 0 -32 50 57 16 13 47.6 26 310 -15 -32 43 27 -32 58 28 -32 39 10 -33 2 47 1.12 168 0 0 -32 57 39 16 13 41.8 25 309 -15 -32 50 8 -33 5 10 -32 45 51 -33 9 29 1.12 169 0 0 -33 4 40 16 13 36.1 25 308 -14 -32 57 9 -33 12 12 -32 52 51 -33 16 31 1.12 170 0 0 -33 12 1 16 13 30.6 24 308 -13 -33 4 29 -33 19 33 -33 0 11 -33 23 53 1.12 171 0 0 -33 19 41 16 13 25.2 23 307 -13 -33 12 9 -33 27 14 -33 7 51 -33 31 34 1.12 172 0 0 -33 27 41 16 13 20.0 22 306 -12 -33 20 9 -33 35 15 -33 15 50 -33 39 35 1.12 173 0 0 -33 36 1 16 13 14.9 22 306 -11 -33 28 28 -33 43 35 -33 24 9 -33 47 55 1.12 174 0 0 -33 44 39 16 13 10.0 21 305 -10 -33 37 6 -33 52 14 -33 32 47 -33 56 35 1.12 175 0 0 -33 53 37 16 13 5.3 20 304 -10 -33 46 3 -34 1 13 -33 41 43 -34 5 34 1.12 176 0 0 -34 2 54 16 13 0.7 19 304 -9 -33 55 19 -34 10 30 -33 50 59 -34 14 52 1.12 177 0 0 -34 12 30 16 12 56.3 19 303 -8 -34 4 54 -34 20 6 -34 0 34 -34 24 28 1.13 178 0 0 -34 22 24 16 12 52.1 18 302 -7 -34 14 47 -34 30 1 -34 10 27 -34 34 23 1.13 179 0 0 -34 32 36 16 12 48.1 17 302 -7 -34 24 59 -34 40 14 -34 20 38 -34 44 37 1.13 180 0 0 -34 43 7 16 12 44.2 16 301 -6 -34 35 30 -34 50 46 -34 31 8 -34 55 9 1.13 -179 0 0 -34 53 57 16 12 40.5 15 300 -5 -34 46 18 -35 1 36 -34 41 57 -35 6 0 1.13 -178 0 0 -35 5 3 16 12 37.0 15 300 -4 -34 57 24 -35 12 44 -34 53 2 -35 17 8 1.13 -177 0 0 -35 16 28 16 12 33.7 14 299 -4 -35 8 48 -35 24 9 -35 4 25 -35 28 33 1.13 -176 0 0 -35 28 9 16 12 30.5 13 298 -3 -35 20 29 -35 35 51 -35 16 6 -35 40 16 1.14 -175 0 0 -35 40 8 16 12 27.6 12 298 -2 -35 32 27 -35 47 51 -35 28 4 -35 52 16 1.14 -174 0 0 -35 52 24 16 12 24.8 11 297 -1 -35 44 42 -36 0 7 -35 40 18 -36 4 33 1.14 -173 0 0 -36 4 57 16 12 22.2 11 297 0 -35 57 14 -36 12 41 -35 52 50 -36 17 7 1.14 -172 0 0 -36 17 46 16 12 19.8 10 296 0 -36 10 2 -36 25 31 -36 5 37 -36 29 57 1.14 -171 0 0 -36 30 51 16 12 17.6 9 295 1 -36 23 6 -36 38 36 -36 18 41 -36 43 3 1.15 -170 0 0 -36 44 12 16 12 15.6 8 295 2 -36 36 26 -36 51 58 -36 32 1 -36 56 26 1.15 -169 0 0 -36 57 48 16 12 13.8 7 294 3 -36 50 2 -37 5 35 -36 45 36 -37 10 3 1.16 -168 0 0 -37 11 40 16 12 12.1 7 294 4 -37 3 53 -37 19 28 -36 59 26 -37 23 56 1.16 -167 0 0 -37 25 47 16 12 10.7 6 293 4 -37 17 59 -37 33 35 -37 13 32 -37 38 4 1.17 -166 0 0 -37 40 8 16 12 9.4 5 292 5 -37 32 19 -37 47 58 -37 27 52 -37 52 27 1.18 -165 0 0 -37 54 43 16 12 8.4 4 292 6 -37 46 54 -38 2 34 -37 42 26 -38 7 4 1.19 -164 0 0 -38 9 33 16 12 7.5 3 291 7 -38 1 43 -38 17 24 -37 57 14 -38 21 55 1.21 -163 0 0 -38 24 36 16 12 6.8 3 291 8 -38 16 45 -38 32 28 -38 12 16 -38 36 59 1.24 -162 0 0 -38 39 52 16 12 6.4 2 290 9 -38 32 0 -38 47 45 -38 27 31 -38 52 16 1.30 -161 0 0 -38 55 21 16 12 6.1 1 289 9 -38 47 28 -39 3 15 -38 42 58 -39 7 47 1.47 -160 0 0 -39 11 2 16 12 6.0 0 289 10 -39 3 9 .. .. .. -38 58 39 .. .. .. 8.64 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 522-018574 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 58 00.5792 DE: +14 22 16.123 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 58 00.5792 DE: +14 22 16.123 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.0 * B mag [mag]: 12.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (540) Rosamunde asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.021 distance from Earth [AU]: 1.23540 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 date of fit: 2023 Apr 24 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): 0.021", 0.005", 89.945° remarks: * orbital elements for (540)Rosamunde : Mean anomaly = 277.8993385119 deg Arg. of pericenter = 337.3548320648 deg Long. of node = 202.0861612804 deg Inclination = 5.5804798563 deg Eccentricity = 0.0894061010 Semimajor axis = 2.2196839726 AU Perihelion dist = 2.0212306831 AU Mag: H = 10.72, G = 0.15 Epoch of elements : MJD 60659.67996154 TDT (2024 Dec 15.6800) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,1.82,2024,12,15,16.319053,0.091966,-0.732661,-5.683381,-0.713355,-0.000560,0.000880,0.000001,0.000000 120.2641,14.3743,-65.92,-23.31,False UCAC4 522-018574,5.96682756,14.3711453,12.55,11.96,11.64,0.0,0,,5.99089497,14.3743477,1.62,1.52,0,0,0 540,Rosamunde,13.31,18.430,1.2354,0,0,-2.784,-5.08,,1.0,0 0,277.6967,2024,12,15,337.3548,202.0862,5.5805,0.08941,2.21968,2.02123,10.72,5.0,0.15 1.286,0.0210,0.0053,90,0.0059,Known errors,1.03,0,-1,-1 20241215_018574,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:47 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org