IOTA/IOTA-ES occultation update for (540) Rosamunde / UCAC4 525-022368 event on 2024 Dec 03, 17:40 UT Visible from Summary ------- On 2024 Dec 03 UT, the 18.3982305935783 km diameter asteroid (540) Rosamunde will occult a 11.2 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 2.55 mag to 13.62 mag (the magnitude of the asteroid) for at most 2.120 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: 98 * date and approx. time of event: 2024 Dec 03, 17:28 - 2024 Dec 03, 17:53 * geocentric midpoint of event [JD]: 2460648.23672771 * magnitude of target star: 11.18 * magnitude drop [mag]: 2.55 * estimated maximum duration [s]: 2.120 * Moon: 6 % sunlit, 164° distance * Sun: 158° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 19 * 1 sigma uncertainty interval [path widths]: +/- 0.34 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.005", 91°) * approx speed of asteroid's shadow [km/s]: 8.7027 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 525-022368 by 540 Rosamunde on 2024 Dec 3 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 25 0 0 -10 14 20 17 53 5.4 1 75 -19 -10 9 8 -10 19 32 -10 5 35 -10 23 6 .... 26 0 0 - 9 58 1 17 53 5.2 2 75 -20 - 9 52 48 -10 3 13 - 9 49 15 -10 6 47 -0.08 27 0 0 - 9 41 27 17 53 4.7 3 74 -21 - 9 36 14 - 9 46 39 - 9 32 40 - 9 50 13 -0.06 28 0 0 - 9 24 39 17 53 4.0 4 74 -22 - 9 19 26 - 9 29 52 - 9 15 52 - 9 33 26 -0.05 29 0 0 - 9 7 38 17 53 3.0 5 74 -23 - 9 2 25 - 9 12 51 - 8 58 51 - 9 16 26 -0.04 30 0 0 - 8 50 24 17 53 1.8 6 74 -24 - 8 45 11 - 8 55 38 - 8 41 36 - 8 59 12 -0.04 31 0 0 - 8 32 57 17 53 0.4 7 74 -25 - 8 27 44 - 8 38 11 - 8 24 9 - 8 41 46 -0.04 32 0 0 - 8 15 18 17 52 58.7 8 74 -26 - 8 10 4 - 8 20 32 - 8 6 29 - 8 24 7 -0.04 33 0 0 - 7 57 27 17 52 56.9 9 74 -27 - 7 52 12 - 8 2 41 - 7 48 37 - 8 6 16 -0.03 34 0 0 - 7 39 24 17 52 54.7 10 73 -28 - 7 34 9 - 7 44 38 - 7 30 34 - 7 48 13 -0.03 35 0 0 - 7 21 9 17 52 52.4 11 73 -29 - 7 15 54 - 7 26 24 - 7 12 19 - 7 30 0 -0.03 36 0 0 - 7 2 44 17 52 49.8 12 73 -30 - 6 57 29 - 7 7 59 - 6 53 53 - 7 11 35 -0.03 37 0 0 - 6 44 8 17 52 47.0 13 73 -31 - 6 38 53 - 6 49 23 - 6 35 17 - 6 52 59 -0.03 38 0 0 - 6 25 22 17 52 43.9 14 73 -32 - 6 20 6 - 6 30 37 - 6 16 30 - 6 34 13 -0.03 39 0 0 - 6 6 26 17 52 40.6 15 73 -33 - 6 1 10 - 6 11 41 - 5 57 34 - 6 15 17 -0.03 40 0 0 - 5 47 20 17 52 37.1 16 73 -34 - 5 42 4 - 5 52 36 - 5 38 28 - 5 56 12 -0.03 41 0 0 - 5 28 5 17 52 33.3 17 73 -35 - 5 22 49 - 5 33 22 - 5 19 13 - 5 36 58 -0.03 42 0 0 - 5 8 42 17 52 29.4 18 73 -36 - 5 3 26 - 5 13 59 - 4 59 49 - 5 17 35 -0.03 43 0 0 - 4 49 11 17 52 25.2 19 72 -37 - 4 43 54 - 4 54 27 - 4 40 17 - 4 58 4 -0.03 44 0 0 - 4 29 31 17 52 20.7 20 72 -38 - 4 24 14 - 4 34 48 - 4 20 38 - 4 38 25 -0.03 45 0 0 - 4 9 44 17 52 16.1 21 72 -39 - 4 4 27 - 4 15 1 - 4 0 51 - 4 18 38 -0.03 46 0 0 - 3 49 50 17 52 11.2 22 72 -40 - 3 44 33 - 3 55 8 - 3 40 56 - 3 58 45 -0.03 47 0 0 - 3 29 50 17 52 6.1 23 72 -41 - 3 24 33 - 3 35 7 - 3 20 56 - 3 38 44 -0.03 48 0 0 - 3 9 43 17 52 0.8 24 72 -42 - 3 4 26 - 3 15 1 - 3 0 49 - 3 18 38 -0.03 49 0 0 - 2 49 31 17 51 55.3 25 72 -43 - 2 44 13 - 2 54 48 - 2 40 36 - 2 58 26 -0.03 50 0 0 - 2 29 13 17 51 49.5 26 72 -44 - 2 23 55 - 2 34 31 - 2 20 18 - 2 38 8 -0.03 51 0 0 - 2 8 50 17 51 43.6 27 72 -45 - 2 3 33 - 2 14 8 - 1 59 55 - 2 17 46 -0.03 52 0 0 - 1 48 23 17 51 37.4 28 72 -46 - 1 43 5 - 1 53 41 - 1 39 28 - 1 57 19 -0.03 53 0 0 - 1 27 52 17 51 31.0 29 72 -47 - 1 22 34 - 1 33 10 - 1 18 56 - 1 36 48 -0.03 54 0 0 - 1 7 17 17 51 24.5 30 72 -48 - 1 1 59 - 1 12 35 - 0 58 21 - 1 16 13 -0.03 55 0 0 - 0 46 39 17 51 17.7 31 72 -49 - 0 41 21 - 0 51 57 - 0 37 43 - 0 55 35 -0.03 56 0 0 - 0 25 58 17 51 10.7 32 72 -50 - 0 20 40 - 0 31 17 - 0 17 2 - 0 34 54 -0.03 57 0 0 - 0 5 15 17 51 3.5 34 72 -51 0 0 3 - 0 10 34 0 3 41 - 0 14 11 -0.03 58 0 0 0 15 30 17 50 56.2 35 72 -52 0 20 48 0 10 11 0 24 26 0 6 33 -0.03 59 0 0 0 36 16 17 50 48.6 36 72 -53 0 41 34 0 30 58 0 45 12 0 27 20 -0.03 60 0 0 0 57 3 17 50 40.9 37 72 -54 1 2 22 0 51 45 1 6 0 0 48 7 -0.03 61 0 0 1 17 51 17 50 32.9 38 72 -55 1 23 10 1 12 33 1 26 48 1 8 55 -0.03 62 0 0 1 38 39 17 50 24.8 39 72 -56 1 43 58 1 33 21 1 47 36 1 29 43 -0.03 63 0 0 1 59 27 17 50 16.5 40 72 -57 2 4 46 1 54 9 2 8 24 1 50 31 -0.03 64 0 0 2 20 14 17 50 8.1 41 72 -58 2 25 33 2 14 56 2 29 11 2 11 18 -0.03 65 0 0 2 41 0 17 49 59.5 42 72 -59 2 46 19 2 35 42 2 49 57 2 32 4 -0.03 66 0 0 3 1 45 17 49 50.7 43 72 -60 3 7 3 2 56 26 3 10 41 2 52 48 -0.03 67 0 0 3 22 27 17 49 41.7 44 73 -61 3 27 45 3 17 9 3 31 23 3 13 31 -0.03 68 0 0 3 43 7 17 49 32.6 45 73 -62 3 48 25 3 37 49 3 52 3 3 34 11 -0.03 69 0 0 4 3 44 17 49 23.3 46 73 -63 4 9 2 3 58 26 4 12 40 3 54 48 -0.03 70 0 0 4 24 18 17 49 13.9 47 73 -64 4 29 36 4 19 0 4 33 14 4 15 22 -0.03 71 0 0 4 44 48 17 49 4.4 48 73 -64 4 50 7 4 39 30 4 53 44 4 35 53 -0.03 72 0 0 5 5 15 17 48 54.7 49 73 -65 5 10 33 4 59 57 5 14 10 4 56 19 -0.03 73 0 0 5 25 37 17 48 44.8 50 73 -66 5 30 55 5 20 19 5 34 32 5 16 41 -0.03 74 0 0 5 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16 51 12 17 5 0 16 47 41 -0.04 114 0 0 17 9 15 17 40 54.9 87 164 -69 17 14 24 17 4 7 17 17 55 17 0 36 -0.05 115 0 0 17 21 55 17 40 43.0 87 187 -68 17 27 3 17 16 47 17 30 34 17 13 16 -0.05 116 0 0 17 34 19 17 40 31.1 87 205 -67 17 39 27 17 29 11 17 42 57 17 25 41 -0.04 117 0 0 17 46 27 17 40 19.3 86 217 -66 17 51 35 17 41 20 17 55 5 17 37 49 -0.04 118 0 0 17 58 20 17 40 7.4 86 226 -66 18 3 27 17 53 12 18 6 57 17 49 42 -0.04 119 0 0 18 9 56 17 39 55.6 85 232 -65 18 15 3 18 4 49 18 18 33 18 1 19 -0.04 120 0 0 18 21 17 17 39 43.9 84 236 -64 18 26 23 18 16 10 18 29 53 18 12 40 -0.04 121 0 0 18 32 21 17 39 32.2 83 239 -63 18 37 27 18 27 15 18 40 57 18 23 45 -0.04 122 0 0 18 43 9 17 39 20.5 82 242 -62 18 48 15 18 38 3 18 51 45 18 34 33 -0.04 123 0 0 18 53 41 17 39 8.9 81 244 -61 18 58 47 18 48 35 19 2 16 18 45 6 -0.04 124 0 0 19 3 56 17 38 57.3 80 246 -61 19 9 2 18 58 50 19 12 31 18 55 21 -0.04 125 0 0 19 13 55 17 38 45.7 80 247 -60 19 19 0 19 8 49 19 22 29 19 5 20 -0.04 126 0 0 19 23 37 17 38 34.3 79 249 -59 19 28 42 19 18 32 19 32 11 19 15 3 -0.04 127 0 0 19 33 2 17 38 22.8 78 250 -58 19 38 7 19 27 57 19 41 36 19 24 29 -0.04 128 0 0 19 42 11 17 38 11.5 77 251 -57 19 47 15 19 37 6 19 50 44 19 33 38 -0.04 129 0 0 19 51 2 17 38 0.1 76 252 -56 19 56 7 19 45 58 19 59 35 19 42 30 -0.04 130 0 0 19 59 37 17 37 48.9 75 253 -56 20 4 41 19 54 33 20 8 9 19 51 5 -0.04 131 0 0 20 7 55 17 37 37.7 74 253 -55 20 12 59 20 2 51 20 16 27 19 59 23 -0.04 132 0 0 20 15 55 17 37 26.6 73 254 -54 20 20 59 20 10 51 20 24 27 20 7 24 -0.04 133 0 0 20 23 39 17 37 15.5 72 255 -53 20 28 42 20 18 35 20 32 10 20 15 7 -0.04 134 0 0 20 31 5 17 37 4.5 72 255 -52 20 36 8 20 26 1 20 39 36 20 22 34 -0.04 135 0 0 20 38 14 17 36 53.6 71 256 -51 20 43 17 20 33 11 20 46 44 20 29 43 -0.04 136 0 0 20 45 5 17 36 42.7 70 257 -50 20 50 8 20 40 2 20 53 36 20 36 35 -0.04 137 0 0 20 51 39 17 36 31.9 69 257 -50 20 56 42 20 46 36 21 0 9 20 43 9 -0.04 138 0 0 20 57 56 17 36 21.2 68 258 -49 21 2 59 20 52 53 21 6 26 20 49 26 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42 21 47 40 22 1 8 21 44 14 -0.04 152 0 0 21 54 48 17 34 0.2 56 265 -37 21 59 49 21 49 47 22 3 15 21 46 21 -0.04 153 0 0 21 56 37 17 33 50.9 55 265 -36 22 1 38 21 51 36 22 5 4 21 48 11 -0.04 154 0 0 21 58 8 17 33 41.6 54 265 -35 22 3 9 21 53 8 22 6 35 21 49 42 -0.04 155 0 0 21 59 21 17 33 32.4 53 266 -34 22 4 22 21 54 20 22 7 48 21 50 55 -0.04 156 0 0 22 0 16 17 33 23.4 52 266 -33 22 5 17 21 55 15 22 8 43 21 51 49 -0.04 157 0 0 22 0 53 17 33 14.4 51 267 -32 22 5 53 21 55 52 22 9 19 21 52 26 -0.04 158 0 0 22 1 11 17 33 5.6 50 267 -31 22 6 12 21 56 10 22 9 38 21 52 44 -0.04 159 0 0 22 1 11 17 32 56.8 49 268 -31 22 6 12 21 56 10 22 9 37 21 52 44 -0.04 160 0 0 22 0 52 17 32 48.2 48 268 -30 22 5 53 21 55 52 22 9 19 21 52 26 -0.04 161 0 0 22 0 16 17 32 39.7 48 268 -29 22 5 17 21 55 15 22 8 43 21 51 49 -0.04 162 0 0 21 59 21 17 32 31.3 47 269 -28 22 4 22 21 54 20 22 7 48 21 50 54 -0.04 163 0 0 21 58 7 17 32 23.0 46 269 -27 22 3 8 21 53 7 22 6 34 21 49 41 -0.04 164 0 0 21 56 36 17 32 14.9 45 270 -26 22 1 37 21 51 35 22 5 3 21 48 9 -0.04 165 0 0 21 54 45 17 32 6.8 44 270 -25 21 59 46 21 49 44 22 3 12 21 46 18 -0.04 166 0 0 21 52 37 17 31 58.9 43 270 -24 21 57 38 21 47 36 22 1 4 21 44 10 -0.04 167 0 0 21 50 10 17 31 51.1 42 271 -24 21 55 11 21 45 9 21 58 37 21 41 43 -0.04 168 0 0 21 47 24 17 31 43.4 41 271 -23 21 52 25 21 42 23 21 55 51 21 38 57 -0.04 169 0 0 21 44 20 17 31 35.9 40 271 -22 21 49 21 21 39 19 21 52 48 21 35 53 -0.04 170 0 0 21 40 57 17 31 28.5 39 272 -21 21 45 59 21 35 56 21 49 25 21 32 30 -0.04 171 0 0 21 37 16 17 31 21.2 39 272 -20 21 42 18 21 32 15 21 45 44 21 28 48 -0.04 172 0 0 21 33 17 17 31 14.0 38 273 -19 21 38 18 21 28 15 21 41 45 21 24 49 -0.04 173 0 0 21 28 58 17 31 7.0 37 273 -18 21 34 0 21 23 57 21 37 27 21 20 30 -0.04 174 0 0 21 24 22 17 31 0.1 36 273 -17 21 29 24 21 19 20 21 32 50 21 15 53 -0.04 175 0 0 21 19 26 17 30 53.4 35 274 -16 21 24 28 21 14 24 21 27 55 21 10 58 -0.04 176 0 0 21 14 12 17 30 46.8 34 274 -16 21 19 14 21 9 10 21 22 41 21 5 43 -0.04 177 0 0 21 8 40 17 30 40.3 33 274 -15 21 13 42 21 3 37 21 17 9 21 0 11 -0.04 178 0 0 21 2 49 17 30 34.0 32 275 -14 21 7 51 20 57 46 21 11 18 20 54 19 -0.04 179 0 0 20 56 39 17 30 27.8 31 275 -13 21 1 42 20 51 36 21 5 9 20 48 9 -0.04 180 0 0 20 50 11 17 30 21.8 30 276 -12 20 55 13 20 45 8 20 58 41 20 41 40 -0.04 -179 0 0 20 43 24 17 30 15.9 29 276 -11 20 48 27 20 38 21 20 51 54 20 34 53 -0.04 -178 0 0 20 36 18 17 30 10.2 29 276 -10 20 41 21 20 31 15 20 44 49 20 27 47 -0.04 -177 0 0 20 28 54 17 30 4.7 28 277 -9 20 33 58 20 23 51 20 37 25 20 20 23 -0.04 -176 0 0 20 21 11 17 29 59.3 27 277 -8 20 26 15 20 16 8 20 29 43 20 12 40 -0.04 -175 0 0 20 13 10 17 29 54.0 26 277 -8 20 18 14 20 8 6 20 21 42 20 4 38 -0.04 -174 0 0 20 4 50 17 29 48.9 25 278 -7 20 9 55 19 59 46 20 13 23 19 56 18 -0.04 -173 0 0 19 56 12 17 29 44.0 24 278 -6 20 1 17 19 51 8 20 4 45 19 47 40 -0.04 -172 0 0 19 47 15 17 29 39.2 23 278 -5 19 52 20 19 42 11 19 55 49 19 38 42 -0.04 -171 0 0 19 38 0 17 29 34.7 22 279 -4 19 43 5 19 32 55 19 46 34 19 29 27 -0.04 -170 0 0 19 28 27 17 29 30.2 21 279 -3 19 33 32 19 23 21 19 37 1 19 19 53 -0.04 -169 0 0 19 18 34 17 29 26.0 20 279 -2 19 23 40 19 13 29 19 27 9 19 10 0 -0.04 -168 0 0 19 8 24 17 29 21.9 19 280 -1 19 13 30 19 3 18 19 16 59 18 59 49 -0.04 -167 0 0 18 57 55 17 29 18.0 18 280 0 19 3 1 18 52 49 19 6 31 18 49 20 -0.04 -166 0 0 18 47 8 17 29 14.3 17 280 1 18 52 14 18 42 2 18 55 44 18 38 32 -0.04 -165 0 0 18 36 3 17 29 10.8 16 281 2 18 41 9 18 30 56 18 44 39 18 27 27 -0.04 -164 0 0 18 24 39 17 29 7.4 15 281 3 18 29 46 18 19 33 18 33 16 18 16 3 -0.04 -163 0 0 18 12 58 17 29 4.3 14 281 4 18 18 5 18 7 51 18 21 35 18 4 21 -0.04 -162 0 0 18 0 58 17 29 1.3 13 282 4 18 6 6 17 55 51 18 9 36 17 52 20 -0.04 -161 0 0 17 48 41 17 28 58.5 13 282 5 17 53 49 17 43 33 17 57 19 17 40 2 -0.04 -160 0 0 17 36 5 17 28 56.0 12 282 6 17 41 14 17 30 57 17 44 44 17 27 26 -0.04 -159 0 0 17 23 12 17 28 53.6 11 282 7 17 28 21 17 18 4 17 31 52 17 14 33 -0.04 -158 0 0 17 10 1 17 28 51.4 10 283 8 17 15 10 17 4 52 17 18 41 17 1 21 -0.04 -157 0 0 16 56 33 17 28 49.4 9 283 9 17 1 42 16 51 24 17 5 13 16 47 52 -0.04 -156 0 0 16 42 47 17 28 47.6 8 283 10 16 47 56 16 37 37 16 51 28 16 34 6 -0.04 -155 0 0 16 28 43 17 28 46.1 7 284 11 16 33 53 16 23 34 16 37 25 16 20 2 -0.04 -154 0 0 16 14 23 17 28 44.7 6 284 12 16 19 33 16 9 13 16 23 5 16 5 40 -0.04 -153 0 0 15 59 45 17 28 43.6 5 284 13 16 4 56 15 54 35 16 8 28 15 51 2 -0.05 -152 0 0 15 44 50 17 28 42.6 4 284 14 15 50 1 15 39 40 15 53 34 15 36 7 -0.05 -151 0 0 15 29 39 17 28 41.9 3 285 15 15 34 50 15 24 28 15 38 23 15 20 55 -0.07 -150 0 0 15 14 11 17 28 41.4 2 285 16 15 19 22 15 8 59 15 22 55 15 5 26 -0.09 -149 0 0 14 58 26 17 28 41.1 1 285 17 15 3 38 14 53 14 15 7 11 14 49 41 -0.18 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 525-022368 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 10 16.4181 DE: +14 53 05.663 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 10 16.4181 DE: +14 53 05.662 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.2 * B mag [mag]: 12.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (540) Rosamunde asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.020 distance from Earth [AU]: 1.27910 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): 0.020", 0.005", 90.634° remarks: * orbital elements for (540)Rosamunde : Mean anomaly = 274.3509309253 deg Arg. of pericenter = 337.3441012841 deg Long. of node = 202.0879239876 deg Inclination = 5.5805664468 deg Eccentricity = 0.0894240910 Semimajor axis = 2.2197194735 AU Perihelion dist = 2.0212230773 AU Mag: H = 10.72, G = 0.15 Epoch of elements : MJD 60647.73672867 TDT (2024 Dec 03.7367) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,2.12,2024,12,3,17.681465,-0.008787,0.038296,-4.787039,-1.101140,-0.001989,0.000834,0.000001,0.000000 114.6663,14.8808,-87.70,-22.24,False UCAC4 525-022368,6.17122724,14.8849063,12.19,11.18,10.63,0.1,0,,6.19531520,14.8808167,2.55,2.64,0,0,0 540,Rosamunde,13.62,18.491,1.2791,0,0,-2.270,-7.57,,1.0,0 0,274.1314,2024,12,3,337.3441,202.0879,5.5806,0.08942,2.21972,2.02122,10.72,5.0,0.15 1.342,0.0203,0.0050,91,0.0068,Known errors,1.23,0,-1,-1 20241203_022368,60140.72 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:23 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org