IOTA/IOTA-ES occultation update for (342) Endymion / UCAC4 545-018674 event on 2024 Nov 18, 08:00 UT Visible from Summary ------- On 2024 Nov 18 UT, the 59.926 km diameter asteroid (342) Endymion will occult a 11.5 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.07 mag to 13.41 mag (the magnitude of the asteroid) for at most 9.170 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: 94 * date and approx. time of event: 2024 Nov 18, 07:44 - 2024 Nov 18, 08:17 * geocentric midpoint of event [JD]: 2460632.83375204 * magnitude of target star: 11.51 * magnitude drop [mag]: 2.07 * estimated maximum duration [s]: 9.170 * Moon: 92 % sunlit, 10° distance * Sun: 149° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 60 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 5.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.039, +/- 0.020) * 1 sigma uncertainty ellipse (major, minor, PA): (0.039", 0.020", 94°) * approx speed of asteroid's shadow [km/s]: 6.5374 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 545-018674 by 342 Endymion on 2024 Nov 18 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 -177 0 0 .. .. .... .. .. .. .. .. .. -23 7 37 .. .. .. -22 51 34 .. .. .. .... -176 0 0 -23 3 50 8 16 43.1 1 69 -27 -22 46 20 -23 21 20 -22 30 13 -23 37 25 .... -175 0 0 -22 42 0 8 16 42.7 2 69 -28 -22 24 26 -22 59 33 -22 8 17 -23 15 41 -0.14 -174 0 0 -22 19 34 8 16 42.0 3 68 -29 -22 1 56 -22 37 11 -21 45 44 -22 53 22 -0.13 -173 0 0 -21 56 31 8 16 41.0 4 68 -30 -21 38 50 -22 14 12 -21 22 34 -22 30 26 -0.12 -172 0 0 -21 32 53 8 16 39.6 5 67 -31 -21 15 8 -21 50 37 -20 58 49 -22 6 55 -0.12 -171 0 0 -21 8 38 8 16 38.0 6 67 -32 -20 50 50 -21 26 26 -20 34 27 -21 42 47 -0.11 -170 0 0 -20 43 47 8 16 36.1 7 67 -33 -20 25 55 -21 1 39 -20 9 29 -21 18 3 -0.11 -169 0 0 -20 18 21 8 16 33.8 8 66 -34 -20 0 25 -20 36 16 -19 43 55 -20 52 44 -0.11 -168 0 0 -19 52 18 8 16 31.2 9 66 -34 -19 34 19 -20 10 17 -19 17 45 -20 26 49 -0.11 -167 0 0 -19 25 40 8 16 28.3 10 66 -35 -19 7 37 -19 43 43 -18 51 0 -20 0 18 -0.11 -166 0 0 -18 58 27 8 16 25.1 11 65 -36 -18 40 20 -19 16 33 -18 23 40 -19 33 12 -0.11 -165 0 0 -18 30 39 8 16 21.5 12 65 -37 -18 12 28 -18 48 49 -17 55 44 -19 5 31 -0.11 -164 0 0 -18 2 15 8 16 17.6 13 65 -38 -17 44 0 -18 20 29 -17 27 13 -18 37 15 -0.10 -163 0 0 -17 33 17 8 16 13.4 14 64 -39 -17 14 59 -17 51 35 -16 58 8 -18 8 24 -0.10 -162 0 0 -17 3 45 8 16 8.8 15 64 -40 -16 45 22 -17 22 6 -16 28 28 -17 38 59 -0.10 -161 0 0 -16 33 38 8 16 3.8 16 64 -41 -16 15 12 -16 52 4 -15 58 14 -17 9 0 -0.10 -160 0 0 -16 2 58 8 15 58.5 17 64 -42 -15 44 28 -16 21 28 -15 27 27 -16 38 27 -0.10 -159 0 0 -15 31 45 8 15 52.9 18 63 -44 -15 13 11 -15 50 18 -14 56 6 -16 7 21 -0.10 -158 0 0 -14 59 59 8 15 46.9 20 63 -45 -14 41 21 -15 18 36 -14 24 13 -15 35 42 -0.10 -157 0 0 -14 27 41 8 15 40.5 21 63 -46 -14 8 59 -14 46 21 -13 51 48 -15 3 31 -0.10 -156 0 0 -13 54 50 8 15 33.8 22 63 -47 -13 36 5 -14 13 35 -13 18 50 -14 30 48 -0.10 -155 0 0 -13 21 29 8 15 26.7 23 63 -48 -13 2 40 -13 40 17 -12 45 22 -13 57 33 -0.10 -154 0 0 -12 47 37 8 15 19.2 24 62 -49 -12 28 44 -13 6 28 -12 11 23 -13 23 48 -0.10 -153 0 0 -12 13 14 8 15 11.4 25 62 -50 -11 54 19 -12 32 9 -11 36 53 -12 49 33 -0.10 -152 0 0 -11 38 23 8 15 3.2 26 62 -51 -11 19 23 -11 57 21 -11 1 55 -12 14 48 -0.10 -151 0 0 -11 3 2 8 14 54.7 27 62 -52 -10 43 59 -11 22 4 -10 26 28 -11 39 34 -0.10 -150 0 0 -10 27 14 8 14 45.8 28 62 -53 -10 8 8 -10 46 19 - 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99 0 0 23 18 47 8 1 34.2 82 120 -66 23 38 10 22 59 25 23 56 1 22 41 37 -0.13 - 98 0 0 23 53 42 8 1 16.7 82 127 -65 24 13 3 23 34 23 24 30 51 23 16 38 -0.13 - 97 0 0 24 28 10 8 0 59.3 82 135 -64 24 47 28 24 8 54 25 5 13 23 51 11 -0.13 - 96 0 0 25 2 10 8 0 42.0 82 144 -64 25 21 25 24 42 56 25 39 7 24 25 16 -0.13 - 95 0 0 25 35 42 8 0 24.9 82 152 -63 25 54 53 25 16 31 26 12 33 24 58 54 -0.13 - 94 0 0 26 8 44 8 0 7.8 82 160 -62 26 27 53 25 49 37 26 45 30 25 32 3 -0.13 - 93 0 0 26 41 18 7 59 51.0 82 167 -61 27 0 23 26 22 14 27 17 58 26 4 42 -0.13 - 92 0 0 27 13 22 7 59 34.2 82 174 -60 27 32 24 26 54 21 27 49 55 26 36 52 -0.13 - 91 0 0 27 44 56 7 59 17.6 81 181 -59 28 3 55 27 25 58 28 21 23 27 8 33 -0.13 - 90 0 0 28 16 0 7 59 1.1 81 186 -58 28 34 56 27 57 6 28 52 21 27 39 43 -0.13 - 89 0 0 28 46 34 7 58 44.8 80 191 -57 29 5 26 28 27 43 29 22 48 28 10 23 -0.13 - 88 0 0 29 16 37 7 58 28.7 79 195 -56 29 35 26 28 57 49 29 52 45 28 40 33 -0.13 - 87 0 0 29 46 9 7 58 12.7 79 199 -56 30 4 55 29 27 25 30 22 11 29 10 12 -0.13 - 86 0 0 30 15 10 7 57 56.8 78 202 -55 30 33 52 29 56 29 30 51 5 29 39 19 -0.13 - 85 0 0 30 43 40 7 57 41.2 77 205 -54 31 2 19 30 25 3 31 19 28 30 7 56 -0.13 - 84 0 0 31 11 39 7 57 25.6 76 208 -53 31 30 14 30 53 5 31 47 20 30 36 1 -0.14 - 83 0 0 31 39 6 7 57 10.3 76 210 -52 31 57 38 31 20 36 32 14 41 31 3 35 -0.14 - 82 0 0 32 6 2 7 56 55.2 75 213 -51 32 24 30 31 47 35 32 41 30 31 30 38 -0.14 - 81 0 0 32 32 26 7 56 40.2 74 215 -50 32 50 51 32 14 3 33 7 47 31 57 9 -0.14 - 80 0 0 32 58 19 7 56 25.4 73 216 -50 33 16 40 32 39 59 33 33 33 32 23 8 -0.14 - 79 0 0 33 23 40 7 56 10.7 72 218 -49 33 41 57 33 5 23 33 58 47 32 48 36 -0.14 - 78 0 0 33 48 29 7 55 56.3 72 220 -48 34 6 43 33 30 17 34 23 30 33 13 32 -0.14 - 77 0 0 34 12 47 7 55 42.0 71 221 -47 34 30 58 33 54 38 34 47 41 33 37 57 -0.14 - 76 0 0 34 36 34 7 55 27.9 70 223 -46 34 54 41 34 18 28 35 11 21 34 1 50 -0.14 - 75 0 0 34 59 49 7 55 14.0 69 224 -45 35 17 52 34 41 47 35 34 29 34 25 12 -0.14 - 74 0 0 35 22 33 7 55 0.2 68 225 -45 35 40 32 35 4 34 35 57 6 34 48 2 -0.14 - 73 0 0 35 44 45 7 54 46.7 67 227 -44 36 2 41 35 26 50 36 19 12 35 10 22 -0.14 - 72 0 0 36 6 26 7 54 33.3 67 228 -43 36 24 19 35 48 34 36 40 46 35 32 9 -0.14 - 71 0 0 36 27 37 7 54 20.1 66 229 -42 36 45 26 36 9 48 37 1 50 35 53 26 -0.14 - 70 0 0 36 48 16 7 54 7.0 65 230 -41 37 6 2 36 30 31 37 22 23 36 14 12 -0.14 - 69 0 0 37 8 24 7 53 54.2 64 231 -41 37 26 7 36 50 43 37 42 25 36 34 27 -0.14 - 68 0 0 37 28 2 7 53 41.5 64 232 -40 37 45 41 37 10 24 38 1 56 36 54 11 -0.14 - 67 0 0 37 47 9 7 53 29.0 63 233 -39 38 4 45 37 29 34 38 20 57 37 13 25 -0.14 - 66 0 0 38 5 46 7 53 16.7 62 234 -38 38 23 19 37 48 14 38 39 28 37 32 8 -0.14 - 65 0 0 38 23 53 7 53 4.5 61 235 -37 38 41 22 38 6 24 38 57 28 37 50 21 -0.14 - 64 0 0 38 41 30 7 52 52.5 60 236 -37 38 58 56 38 24 4 39 14 59 38 8 3 -0.14 - 63 0 0 38 58 37 7 52 40.7 60 237 -36 39 16 0 38 41 14 39 32 0 38 25 16 -0.14 - 62 0 0 39 15 14 7 52 29.1 59 238 -35 39 32 34 38 57 54 39 48 31 38 41 59 -0.14 - 61 0 0 39 31 21 7 52 17.6 58 238 -34 39 48 38 39 14 5 40 4 33 38 58 13 -0.14 - 60 0 0 39 47 0 7 52 6.3 57 239 -34 40 4 14 39 29 46 40 20 6 39 13 57 -0.14 - 59 0 0 40 2 9 7 51 55.1 57 240 -33 40 19 20 39 44 58 40 35 9 39 29 11 -0.14 - 58 0 0 40 16 49 7 51 44.1 56 241 -32 40 33 57 39 59 41 40 49 44 39 43 57 -0.14 - 57 0 0 40 31 0 7 51 33.3 55 242 -32 40 48 6 40 13 55 41 3 50 39 58 14 -0.14 - 56 0 0 40 44 43 7 51 22.6 54 243 -31 41 1 46 40 27 41 41 17 28 40 12 1 -0.14 - 55 0 0 40 57 58 7 51 12.1 54 243 -30 41 14 58 40 40 58 41 30 37 40 25 21 -0.14 - 54 0 0 41 10 44 7 51 1.8 53 244 -29 41 27 41 40 53 46 41 43 18 40 38 12 -0.14 - 53 0 0 41 23 2 7 50 51.6 52 245 -29 41 39 57 41 6 7 41 55 31 40 50 34 -0.14 - 52 0 0 41 34 52 7 50 41.5 51 246 -28 41 51 44 41 17 59 42 7 16 41 2 29 -0.14 - 51 0 0 41 46 14 7 50 31.6 51 247 -27 42 3 4 41 29 24 42 18 34 41 13 56 -0.14 - 50 0 0 41 57 8 7 50 21.9 50 247 -26 42 13 57 41 40 21 42 29 24 41 24 55 -0.14 - 49 0 0 42 7 36 7 50 12.3 49 248 -26 42 24 22 41 50 50 42 39 47 41 35 26 -0.14 - 48 0 0 42 17 36 7 50 2.8 48 249 -25 42 34 19 42 0 52 42 49 43 41 45 30 -0.14 - 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34 0 0 43 50 59 7 48 4.8 39 259 -16 44 7 22 43 34 36 44 22 27 43 19 33 -0.13 - 33 0 0 43 54 23 7 47 57.3 38 260 -15 44 10 46 43 38 2 44 25 50 43 22 59 -0.13 - 32 0 0 43 57 22 7 47 50.0 37 261 -14 44 13 44 43 41 1 44 28 47 43 25 59 -0.13 - 31 0 0 43 59 55 7 47 42.8 36 261 -14 44 16 16 43 43 35 44 31 19 43 28 33 -0.13 - 30 0 0 44 2 2 7 47 35.7 36 262 -13 44 18 23 43 45 42 44 33 25 43 30 42 -0.13 - 29 0 0 44 3 44 7 47 28.7 35 263 -12 44 20 4 43 47 24 44 35 6 43 32 24 -0.13 - 28 0 0 44 5 0 7 47 21.9 34 264 -12 44 21 19 43 48 40 44 36 21 43 33 40 -0.13 - 27 0 0 44 5 50 7 47 15.1 34 264 -11 44 22 9 43 49 31 44 37 10 43 34 31 -0.13 - 26 0 0 44 6 14 7 47 8.5 33 265 -10 44 22 33 43 49 55 44 37 34 43 34 56 -0.13 - 25 0 0 44 6 12 7 47 2.0 32 266 -10 44 22 32 43 49 54 44 37 33 43 34 54 -0.13 - 24 0 0 44 5 45 7 46 55.7 32 266 -9 44 22 5 43 49 26 44 37 6 43 34 27 -0.13 - 23 0 0 44 4 52 7 46 49.4 31 267 -8 44 21 12 43 48 33 44 36 13 43 33 33 -0.13 - 22 0 0 44 3 33 7 46 43.3 30 268 -8 44 19 53 43 47 14 44 34 54 43 32 14 -0.13 - 21 0 0 44 1 48 7 46 37.3 29 269 -7 44 18 8 43 45 28 44 33 10 43 30 28 -0.13 - 20 0 0 43 59 37 7 46 31.4 29 269 -6 44 15 57 43 43 17 44 30 59 43 28 16 -0.13 - 19 0 0 43 56 59 7 46 25.6 28 270 -5 44 13 20 43 40 39 44 28 23 43 25 38 -0.13 - 18 0 0 43 53 56 7 46 20.0 27 271 -5 44 10 17 43 37 35 44 25 21 43 22 33 -0.13 - 17 0 0 43 50 26 7 46 14.5 27 271 -4 44 6 48 43 34 4 44 21 52 43 19 1 -0.13 - 16 0 0 43 46 29 7 46 9.0 26 272 -3 44 2 53 43 30 6 44 17 57 43 15 3 -0.13 - 15 0 0 43 42 6 7 46 3.8 25 273 -3 43 58 30 43 25 42 44 13 36 43 10 38 -0.13 - 14 0 0 43 37 16 7 45 58.6 25 273 -2 43 53 41 43 20 51 44 8 48 43 5 46 -0.13 - 13 0 0 43 31 59 7 45 53.6 24 274 -1 43 48 26 43 15 33 44 3 33 43 0 27 -0.13 - 12 0 0 43 26 15 7 45 48.6 23 275 -1 43 42 43 43 9 48 43 57 52 42 54 41 -0.13 - 11 0 0 43 20 4 7 45 43.8 22 275 0 43 36 33 43 3 35 43 51 43 42 48 27 -0.12 - 10 0 0 43 13 25 7 45 39.2 22 276 1 43 29 56 42 56 55 43 45 7 42 41 45 -0.12 - 9 0 0 43 6 19 7 45 34.6 21 277 1 43 22 51 42 49 47 43 38 3 42 34 36 -0.12 - 8 0 0 42 58 44 7 45 30.2 20 278 2 43 15 18 42 42 11 43 30 32 42 26 58 -0.12 - 7 0 0 42 50 42 7 45 25.9 19 278 3 43 7 17 42 34 7 43 22 33 42 18 53 -0.12 - 6 0 0 42 42 11 7 45 21.8 19 279 3 42 58 48 42 25 34 43 14 6 42 10 18 -0.12 - 5 0 0 42 33 12 7 45 17.8 18 280 4 42 49 51 42 16 33 43 5 10 42 1 15 -0.12 - 4 0 0 42 23 44 7 45 13.9 17 280 5 42 40 25 42 7 3 42 55 46 41 51 43 -0.12 - 3 0 0 42 13 46 7 45 10.2 16 281 5 42 30 30 41 57 3 42 45 53 41 41 42 -0.12 - 2 0 0 42 3 20 7 45 6.6 16 282 6 42 20 5 41 46 34 42 35 31 41 31 11 -0.12 - 1 0 0 41 52 23 7 45 3.1 15 282 7 42 9 12 41 35 36 42 24 39 41 20 10 -0.12 0 0 0 41 40 57 7 44 59.8 14 283 8 41 57 48 41 24 7 42 13 18 41 8 39 -0.12 1 0 0 41 29 1 7 44 56.6 13 284 8 41 45 54 41 12 8 42 1 26 40 56 38 -0.12 2 0 0 41 16 34 7 44 53.6 13 284 9 41 33 30 40 59 39 41 49 5 40 44 5 -0.12 3 0 0 41 3 36 7 44 50.8 12 285 10 41 20 35 40 46 38 41 36 12 40 31 2 -0.12 4 0 0 40 50 7 7 44 48.1 11 285 11 41 7 9 40 33 6 41 22 49 40 17 28 -0.12 5 0 0 40 36 7 7 44 45.5 10 286 11 40 53 11 40 19 3 41 8 54 40 3 22 -0.13 6 0 0 40 21 34 7 44 43.2 10 287 12 40 38 42 40 4 27 40 54 27 39 48 43 -0.13 7 0 0 40 6 30 7 44 41.0 9 287 13 40 23 40 39 49 19 40 39 29 39 33 33 -0.13 8 0 0 39 50 52 7 44 38.9 8 288 14 40 8 6 39 33 39 40 23 58 39 17 49 -0.13 9 0 0 39 34 42 7 44 37.1 7 289 14 39 52 0 39 17 25 40 7 54 39 1 32 -0.13 10 0 0 39 17 59 7 44 35.4 6 289 15 39 35 20 39 0 38 39 51 17 38 44 42 -0.13 11 0 0 39 0 42 7 44 33.9 6 290 16 39 18 6 38 43 18 39 34 7 38 27 18 -0.14 12 0 0 38 42 50 7 44 32.7 5 291 17 39 0 18 38 25 23 39 16 23 38 9 20 -0.14 13 0 0 38 24 24 7 44 31.6 4 291 17 38 41 56 38 6 53 38 58 4 37 50 47 -0.15 14 0 0 38 5 24 7 44 30.7 3 292 18 38 22 59 37 47 49 38 39 11 37 31 39 -0.16 15 0 0 37 45 48 7 44 30.0 2 292 19 38 3 27 37 28 9 38 19 42 37 11 55 -0.18 16 0 0 37 25 36 7 44 29.5 1 293 20 37 43 20 37 7 53 37 59 39 36 51 36 -0.23 17 0 0 37 4 48 7 44 29.3 0 294 21 37 22 36 36 47 1 37 38 59 36 30 40 -0.51 Uncertainty in time = +/- 6 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 545-018674 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 44 52.5214 DE: +18 57 47.834 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 44 52.5215 DE: +18 57 47.833 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (342) Endymion asteroid class: approx. diameter [km]: 60 approx. diameter ["]: 0.061 distance from Earth [AU]: 1.34760 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#65 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): 0.039", 0.020", 94.483° remarks: * orbital elements for (342)Endymion : Mean anomaly = 342.0860726223 deg Arg. of pericenter = 224.4847466392 deg Long. of node = 232.6485367692 deg Inclination = 7.3534774093 deg Eccentricity = 0.1304545871 Semimajor axis = 2.5692450764 AU Perihelion dist = 2.2340752708 AU Mag: H = 10.24, G = 0.15 Epoch of elements : MJD 60632.33375183 TDT (2024 Nov 18.3338) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#652023Apr24,9.17,2024,11,18,8.010049,-0.066921,0.107074,-3.130853,-1.952732,-0.002858,0.000303,0.000001,0.000000 -91.4205,18.9747,56.16,-19.37,False UCAC4 545-018674,5.74792260,18.9632871,11.83,11.51,11.34,0.0,0,,5.77264539,18.9747244,2.08,1.84,0,0,0 342,Endymion,13.41,59.926,1.3476,0,0,-1.440,-12.74,,3.4,0 0,342.0062,2024,11,18,224.4847,232.6485,7.3535,0.13045,2.56925,2.23408,10.24,5.0,0.15 1.460,0.0390,0.0200,94,0.0282,Known errors,1.81,0,-1,-1 20241118_018674,60140.70 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org