IOTA/IOTA-ES occultation update for (3637) O'Meara / HIP 89161 event on 2024 Oct 13, 09:35 UT Visible from Summary ------- On 2024 Oct 13 UT, the 12.5200962672826 km diameter asteroid (3637) O'Meara will occult a 8.1 mag star in the constellation Serpens for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.37 mag to 16.50 mag (the magnitude of the asteroid) for at most 0.440 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: 89 * date and approx. time of event: 2024 Oct 13, 09:32 - 2024 Oct 13, 09:38 * geocentric midpoint of event [JD]: 2460596.89960063 * magnitude of target star: 8.13 * magnitude drop [mag]: 8.37 * estimated maximum duration [s]: 0.440 * Moon: 78 % sunlit, 53° distance * Sun: 73° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.55 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.002", 83°) * approx speed of asteroid's shadow [km/s]: 28.9110 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 89161 by 3637 O'Meara on 2024 Oct 13 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 12 0 0 -33 12 24 9 32 40.2 0 101 58 -33 17 9 -33 7 39 -33 22 24 -33 2 26 .... 13 0 0 -33 22 47 9 32 40.2 1 101 58 -33 27 33 -33 18 2 -33 32 47 -33 12 49 0.67 14 0 0 -33 33 21 9 32 40.4 2 100 59 -33 38 7 -33 28 35 -33 43 21 -33 23 22 0.76 15 0 0 -33 44 5 9 32 40.6 3 99 59 -33 48 51 -33 39 19 -33 54 6 -33 34 5 0.79 16 0 0 -33 54 58 9 32 40.8 4 99 60 -33 59 45 -33 50 12 -34 5 0 -33 44 58 0.82 17 0 0 -34 6 1 9 32 41.2 5 98 60 -34 10 48 -34 1 15 -34 16 3 -33 56 1 0.83 18 0 0 -34 17 13 9 32 41.6 6 98 60 -34 22 0 -34 12 27 -34 27 16 -34 7 13 0.84 19 0 0 -34 28 35 9 32 42.0 6 97 60 -34 33 22 -34 23 48 -34 38 38 -34 18 34 0.84 20 0 0 -34 40 5 9 32 42.6 7 97 61 -34 44 52 -34 35 18 -34 50 8 -34 30 3 0.85 21 0 0 -34 51 44 9 32 43.1 8 96 61 -34 56 31 -34 46 57 -35 1 47 -34 41 42 0.85 22 0 0 -35 3 31 9 32 43.8 9 95 61 -35 8 18 -34 58 43 -35 13 35 -34 53 28 0.86 23 0 0 -35 15 26 9 32 44.5 10 95 61 -35 20 13 -35 10 38 -35 25 30 -35 5 23 0.86 24 0 0 -35 27 28 9 32 45.3 11 94 61 -35 32 16 -35 22 40 -35 37 33 -35 17 25 0.86 25 0 0 -35 39 38 9 32 46.1 11 94 61 -35 44 26 -35 34 50 -35 49 44 -35 29 34 0.86 26 0 0 -35 51 55 9 32 47.0 12 93 61 -35 56 44 -35 47 7 -36 2 1 -35 41 51 0.87 27 0 0 -36 4 19 9 32 48.0 13 92 61 -36 9 8 -35 59 31 -36 14 25 -35 54 14 0.87 28 0 0 -36 16 49 9 32 49.0 14 92 61 -36 21 38 -36 12 1 -36 26 56 -36 6 44 0.87 29 0 0 -36 29 26 9 32 50.0 15 91 61 -36 34 15 -36 24 37 -36 39 33 -36 19 20 0.87 30 0 0 -36 42 8 9 32 51.2 16 90 61 -36 46 58 -36 37 20 -36 52 16 -36 32 3 0.87 31 0 0 -36 54 57 9 32 52.3 16 90 61 -36 59 46 -36 50 8 -37 5 4 -36 44 50 0.87 32 0 0 -37 7 50 9 32 53.6 17 89 61 -37 12 40 -37 3 1 -37 17 58 -36 57 43 0.87 33 0 0 -37 20 49 9 32 54.9 18 88 61 -37 25 38 -37 15 59 -37 30 57 -37 10 42 0.87 34 0 0 -37 33 52 9 32 56.2 19 88 61 -37 38 42 -37 29 2 -37 44 1 -37 23 44 0.87 35 0 0 -37 46 59 9 32 57.6 20 87 60 -37 51 49 -37 42 10 -37 57 9 -37 36 52 0.88 36 0 0 -38 0 11 9 32 59.1 20 86 60 -38 5 1 -37 55 21 -38 10 21 -37 50 3 0.88 37 0 0 -38 13 26 9 33 0.6 21 86 60 -38 18 17 -38 8 36 -38 23 36 -38 3 18 0.88 38 0 0 -38 26 45 9 33 2.1 22 85 59 -38 31 36 -38 21 55 -38 36 55 -38 16 37 0.88 39 0 0 -38 40 7 9 33 3.7 23 84 59 -38 44 58 -38 35 17 -38 50 18 -38 29 58 0.88 40 0 0 -38 53 32 9 33 5.3 23 83 59 -38 58 23 -38 48 41 -39 3 43 -38 43 23 0.88 41 0 0 -39 6 59 9 33 7.0 24 83 58 -39 11 50 -39 2 9 -39 17 10 -38 56 50 0.88 42 0 0 -39 20 29 9 33 8.8 25 82 58 -39 25 20 -39 15 38 -39 30 40 -39 10 19 0.88 43 0 0 -39 34 0 9 33 10.5 26 81 57 -39 38 51 -39 29 9 -39 44 11 -39 23 50 0.88 44 0 0 -39 47 33 9 33 12.4 26 80 57 -39 52 24 -39 42 42 -39 57 45 -39 37 23 0.88 45 0 0 -40 1 7 9 33 14.2 27 79 56 -40 5 58 -39 56 16 -40 11 19 -39 50 57 0.88 46 0 0 -40 14 42 9 33 16.1 28 79 56 -40 19 34 -40 9 51 -40 24 54 -40 4 32 0.88 47 0 0 -40 28 18 9 33 18.1 28 78 55 -40 33 9 -40 23 27 -40 38 30 -40 18 7 0.88 48 0 0 -40 41 54 9 33 20.1 29 77 55 -40 46 46 -40 37 3 -40 52 6 -40 31 43 0.88 49 0 0 -40 55 30 9 33 22.1 30 76 54 -41 0 22 -40 50 39 -41 5 43 -40 45 19 0.88 50 0 0 -41 9 6 9 33 24.2 31 75 54 -41 13 58 -41 4 15 -41 19 19 -40 58 55 0.88 51 0 0 -41 22 41 9 33 26.3 31 74 53 -41 27 33 -41 17 50 -41 32 54 -41 12 30 0.88 52 0 0 -41 36 15 9 33 28.4 32 73 53 -41 41 7 -41 31 24 -41 46 28 -41 26 4 0.88 53 0 0 -41 49 48 9 33 30.5 33 72 52 -41 54 40 -41 44 57 -42 0 1 -41 39 37 0.88 54 0 0 -42 3 20 9 33 32.7 33 71 51 -42 8 12 -41 58 28 -42 13 33 -41 53 9 0.88 55 0 0 -42 16 50 9 33 35.0 34 70 51 -42 21 42 -42 11 58 -42 27 3 -42 6 38 0.88 56 0 0 -42 30 17 9 33 37.2 34 69 50 -42 35 9 -42 25 26 -42 40 30 -42 20 6 0.88 57 0 0 -42 43 43 9 33 39.5 35 68 50 -42 48 35 -42 38 51 -42 53 56 -42 33 31 0.88 58 0 0 -42 57 5 9 33 41.8 36 67 49 -43 1 57 -42 52 14 -43 7 18 -42 46 54 0.88 59 0 0 -43 10 25 9 33 44.1 36 66 48 -43 15 17 -43 5 34 -43 20 38 -43 0 14 0.88 60 0 0 -43 23 42 9 33 46.5 37 65 48 -43 28 33 -43 18 50 -43 33 54 -43 13 30 0.88 61 0 0 -43 36 55 9 33 48.9 37 64 47 -43 41 46 -43 32 3 -43 47 7 -43 26 44 0.88 62 0 0 -43 50 4 9 33 51.3 38 63 46 -43 54 56 -43 45 13 -44 0 17 -43 39 53 0.88 63 0 0 -44 3 9 9 33 53.7 38 62 46 -44 8 1 -43 58 18 -44 13 22 -43 52 58 0.88 64 0 0 -44 16 10 9 33 56.1 39 61 45 -44 21 2 -44 11 19 -44 26 23 -44 5 59 0.88 65 0 0 -44 29 7 9 33 58.6 40 60 44 -44 33 58 -44 24 16 -44 39 19 -44 18 56 0.88 66 0 0 -44 41 58 9 34 1.1 40 58 44 -44 46 50 -44 37 7 -44 52 10 -44 31 48 0.88 67 0 0 -44 54 45 9 34 3.6 41 57 43 -44 59 36 -44 49 54 -45 4 57 -44 44 35 0.88 68 0 0 -45 7 27 9 34 6.1 41 56 42 -45 12 18 -45 2 36 -45 17 38 -44 57 17 0.88 69 0 0 -45 20 3 9 34 8.6 41 55 42 -45 24 54 -45 15 12 -45 30 14 -45 9 53 0.88 70 0 0 -45 32 33 9 34 11.1 42 54 41 -45 37 24 -45 27 42 -45 42 44 -45 22 23 0.88 71 0 0 -45 44 57 9 34 13.7 42 52 40 -45 49 48 -45 40 7 -45 55 8 -45 34 48 0.88 72 0 0 -45 57 16 9 34 16.2 43 51 39 -46 2 6 -45 52 25 -46 7 26 -45 47 7 0.89 73 0 0 -46 9 28 9 34 18.8 43 50 39 -46 14 18 -46 4 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354 13 -52 14 16 -52 4 51 -52 19 27 -51 59 41 0.89 112 0 0 -52 15 52 9 35 58.1 47 352 13 -52 20 34 -52 11 9 -52 25 45 -52 6 0 0.89 113 0 0 -52 22 0 9 36 0.4 47 351 12 -52 26 42 -52 17 18 -52 31 52 -52 12 8 0.89 114 0 0 -52 27 57 9 36 2.8 47 350 12 -52 32 39 -52 23 15 -52 37 49 -52 18 6 0.89 115 0 0 -52 33 44 9 36 5.1 47 348 11 -52 38 25 -52 29 2 -52 43 36 -52 23 53 0.89 116 0 0 -52 39 20 9 36 7.4 46 347 10 -52 44 1 -52 34 38 -52 49 11 -52 29 30 0.89 117 0 0 -52 44 45 9 36 9.7 46 345 10 -52 49 27 -52 40 4 -52 54 36 -52 34 56 0.89 118 0 0 -52 50 0 9 36 12.0 46 344 9 -52 54 41 -52 45 19 -52 59 51 -52 40 11 0.89 119 0 0 -52 55 4 9 36 14.3 46 343 8 -52 59 45 -52 50 23 -53 4 55 -52 45 15 0.89 120 0 0 -52 59 58 9 36 16.6 45 341 8 -53 4 39 -52 55 17 -53 9 48 -52 50 9 0.89 121 0 0 -53 4 40 9 36 18.8 45 340 7 -53 9 21 -53 0 0 -53 14 30 -52 54 52 0.89 122 0 0 -53 9 12 9 36 21.0 45 339 7 -53 13 53 -53 4 32 -53 19 2 -52 59 25 0.89 123 0 0 -53 13 34 9 36 23.2 44 337 6 -53 18 14 -53 8 54 -53 23 23 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59 22 -54 13 45 -53 54 17 0.89 149 0 0 -54 3 41 9 37 14.3 34 306 -9 -54 8 20 -53 59 3 -54 13 26 -53 53 58 0.89 150 0 0 -54 3 11 9 37 16.0 34 305 -9 -54 7 50 -53 58 33 -54 12 56 -53 53 28 0.89 151 0 0 -54 2 30 9 37 17.7 33 304 -10 -54 7 9 -53 57 52 -54 12 16 -53 52 47 0.89 152 0 0 -54 1 39 9 37 19.3 33 303 -10 -54 6 18 -53 57 1 -54 11 24 -53 51 55 0.89 153 0 0 -54 0 37 9 37 21.0 32 302 -11 -54 5 15 -53 55 58 -54 10 22 -53 50 53 0.89 154 0 0 -53 59 24 9 37 22.6 32 301 -11 -54 4 2 -53 54 45 -54 9 9 -53 49 40 0.89 155 0 0 -53 58 0 9 37 24.2 31 300 -12 -54 2 39 -53 53 21 -54 7 45 -53 48 16 0.89 156 0 0 -53 56 25 9 37 25.8 31 299 -12 -54 1 4 -53 51 47 -54 6 11 -53 46 41 0.89 157 0 0 -53 54 40 9 37 27.3 30 298 -13 -53 59 19 -53 50 1 -54 4 26 -53 44 55 0.89 158 0 0 -53 52 44 9 37 28.9 30 297 -13 -53 57 23 -53 48 5 -54 2 30 -53 42 59 0.89 159 0 0 -53 50 37 9 37 30.4 29 296 -14 -53 55 16 -53 45 58 -54 0 23 -53 40 52 0.89 160 0 0 -53 48 19 9 37 31.9 29 295 -14 -53 52 59 -53 43 40 -53 58 6 -53 38 34 0.89 161 0 0 -53 45 51 9 37 33.3 28 294 -15 -53 50 30 -53 41 12 -53 55 38 -53 36 6 0.89 162 0 0 -53 43 12 9 37 34.8 28 293 -15 -53 47 52 -53 38 33 -53 52 59 -53 33 27 0.89 163 0 0 -53 40 22 9 37 36.2 27 292 -16 -53 45 2 -53 35 43 -53 50 10 -53 30 37 0.89 164 0 0 -53 37 22 9 37 37.6 27 291 -16 -53 42 2 -53 32 43 -53 47 9 -53 27 36 0.90 165 0 0 -53 34 11 9 37 38.9 26 290 -17 -53 38 51 -53 29 31 -53 43 59 -53 24 25 0.90 166 0 0 -53 30 49 9 37 40.3 25 289 -17 -53 35 29 -53 26 9 -53 40 37 -53 21 3 0.90 167 0 0 -53 27 17 9 37 41.6 25 289 -18 -53 31 57 -53 22 37 -53 37 5 -53 17 30 0.90 168 0 0 -53 23 34 9 37 42.9 24 288 -18 -53 28 14 -53 18 54 -53 33 22 -53 13 46 0.90 169 0 0 -53 19 40 9 37 44.2 24 287 -19 -53 24 20 -53 15 0 -53 29 29 -53 9 52 0.90 170 0 0 -53 15 35 9 37 45.4 23 286 -19 -53 20 16 -53 10 55 -53 25 25 -53 5 48 0.90 171 0 0 -53 11 20 9 37 46.7 23 285 -20 -53 16 1 -53 6 40 -53 21 10 -53 1 32 0.90 172 0 0 -53 6 55 9 37 47.9 22 284 -20 -53 11 36 -53 2 14 -53 16 45 -52 57 6 0.90 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53 26 9 38 0.9 14 273 -26 -51 58 9 -51 48 43 -52 3 21 -51 43 32 0.91 -174 0 0 -51 46 34 9 38 1.7 14 272 -26 -51 51 18 -51 41 51 -51 56 30 -51 36 40 0.91 -173 0 0 -51 39 32 9 38 2.5 13 271 -27 -51 44 16 -51 34 49 -51 49 29 -51 29 38 0.91 -172 0 0 -51 32 20 9 38 3.2 13 270 -27 -51 37 5 -51 27 37 -51 42 17 -51 22 25 0.91 -171 0 0 -51 24 58 9 38 3.9 12 270 -27 -51 29 43 -51 20 14 -51 34 56 -51 15 3 0.92 -170 0 0 -51 17 26 9 38 4.6 11 269 -28 -51 22 11 -51 12 42 -51 27 24 -51 7 30 0.92 -169 0 0 -51 9 44 9 38 5.2 11 268 -28 -51 14 29 -51 5 0 -51 19 42 -50 59 47 0.92 -168 0 0 -51 1 52 9 38 5.8 10 267 -29 -51 6 37 -50 57 7 -51 11 51 -50 51 55 0.92 -167 0 0 -50 53 50 9 38 6.4 9 266 -29 -50 58 36 -50 49 5 -51 3 50 -50 43 53 0.93 -166 0 0 -50 45 39 9 38 6.9 9 266 -29 -50 50 24 -50 40 53 -50 55 38 -50 35 40 0.93 -165 0 0 -50 37 17 9 38 7.4 8 265 -30 -50 42 3 -50 32 32 -50 47 17 -50 27 19 0.93 -164 0 0 -50 28 46 9 38 7.9 8 264 -30 -50 33 32 -50 24 1 -50 38 47 -50 18 47 0.94 -163 0 0 -50 20 6 9 38 8.3 7 263 -30 -50 24 52 -50 15 20 -50 30 7 -50 10 6 0.94 -162 0 0 -50 11 16 9 38 8.7 6 263 -31 -50 16 2 -50 6 29 -50 21 17 -50 1 16 0.95 -161 0 0 -50 2 16 9 38 9.0 6 262 -31 -50 7 3 -49 57 30 -50 12 18 -49 52 16 0.96 -160 0 0 -49 53 7 9 38 9.3 5 261 -31 -49 57 54 -49 48 21 -50 3 10 -49 43 6 0.97 -159 0 0 -49 43 49 9 38 9.6 4 260 -32 -49 48 36 -49 39 2 -49 53 52 -49 33 48 0.98 -158 0 0 -49 34 22 9 38 9.8 4 259 -32 -49 39 9 -49 29 35 -49 44 26 -49 24 20 1.00 -157 0 0 -49 24 46 9 38 10.0 3 259 -32 -49 29 33 -49 19 59 -49 34 50 -49 14 44 1.03 -156 0 0 -49 15 1 9 38 10.2 2 258 -32 -49 19 48 -49 10 13 -49 25 5 -49 4 58 1.07 -155 0 0 -49 5 7 9 38 10.3 2 257 -33 -49 9 55 -49 0 19 -49 15 12 -48 55 3 1.15 -154 0 0 -48 55 4 9 38 10.4 1 256 -33 -48 59 52 -48 50 16 -49 5 9 -48 45 0 1.37 -153 0 0 -48 44 53 9 38 10.4 0 256 -33 -48 49 41 -48 40 5 -48 54 58 -48 34 49 3.26 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: HIP 89161 * constellation : Serpens * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 11 47.0661 DE: -09 32 48.951 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 11 47.0659 DE: -09 32 48.951 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.400) * V mag [mag]: 8.1 * B mag [mag]: 8.6 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3637) O'Meara asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.32950 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.013", 0.002", 82.847° remarks: * orbital elements for (3637)O'Meara : Mean anomaly = 16.5341519540 deg Arg. of pericenter = 69.8132303174 deg Long. of node = 207.7252392849 deg Inclination = 14.3285500410 deg Eccentricity = 0.1241170363 Semimajor axis = 2.5555757280 AU Perihelion dist = 2.2383852425 AU Mag: H = 11.74, G = 0.15 Epoch of elements : MJD 60596.39960037 TDT (2024 Oct 13.3996) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.44,2024,10,13,9.590415,-0.091254,-0.654593,16.160739,-2.261179,0.005243,0.000523,-0.000001,0.000000 106.9871,-9.5408,32.68,-8.03,False HIP 89161,18.19640728,-9.5469308,8.57,8.13,7.89,0.2,0,,18.21895379,-9.5408320,8.37,8.16,0,0,0 3637,O'Meara,16.50,12.858,2.3295,0,0,4.124,-8.53,,1.2,0 0,16.4377,2024,10,13,69.8132,207.7252,14.3286,0.12412,2.55558,2.23839,11.74,5.0,0.15 1.549,0.0130,0.0025,83,0.0042,Known errors,2.12,0,-1,-1 20241013__89161,60140.63 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:08 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org