IOTA/IOTA-ES occultation update for (2509) Chukotka / UCAC4 589-030868 event on 2024 Nov 24, 03:43 UT Visible from Summary ------- On 2024 Nov 24 UT, the 17.147 km diameter asteroid (2509) Chukotka will occult a 11.7 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.13 mag to 16.86 mag (the magnitude of the asteroid) for at most 2.030 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 Nov 24, 03:32 - 2024 Nov 24, 03:54 * geocentric midpoint of event [JD]: 2460638.65504888 * magnitude of target star: 11.74 * magnitude drop [mag]: 5.13 * estimated maximum duration [s]: 2.030 * Moon: 39 % sunlit, 69° distance * Sun: 146° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.003", 94°) * approx speed of asteroid's shadow [km/s]: 8.4306 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 589-030868 by 2509 Chukotka on 2024 Nov 24 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 -135 0 0 34 38 56 3 54 0.0 1 57 -25 34 45 26 34 32 27 34 48 2 34 29 51 .... -134 0 0 35 12 20 3 53 59.6 2 57 -26 35 18 49 35 5 50 35 21 26 35 3 14 -0.54 -133 0 0 35 45 30 3 53 59.0 3 58 -27 35 52 0 35 39 1 35 54 36 35 36 25 -0.56 -132 0 0 36 18 26 3 53 58.1 4 58 -28 36 24 56 36 11 57 36 27 32 36 9 21 -0.56 -131 0 0 36 51 7 3 53 56.9 5 59 -28 36 57 37 36 44 38 37 0 13 36 42 2 -0.57 -130 0 0 37 23 32 3 53 55.6 6 59 -29 37 30 2 37 17 3 37 32 38 37 14 27 -0.57 -129 0 0 37 55 40 3 53 54.0 7 60 -30 38 2 9 37 49 11 38 4 45 37 46 35 -0.58 -128 0 0 38 27 30 3 53 52.1 8 61 -31 38 34 0 38 21 2 38 36 36 38 18 26 -0.58 -127 0 0 38 59 2 3 53 50.1 8 61 -32 39 5 31 38 52 34 39 8 7 38 49 59 -0.58 -126 0 0 39 30 15 3 53 47.8 9 62 -33 39 36 44 39 23 47 39 39 20 39 21 12 -0.58 -125 0 0 40 1 9 3 53 45.3 10 63 -33 40 7 37 39 54 41 40 10 13 39 52 6 -0.58 -124 0 0 40 31 41 3 53 42.7 11 63 -34 40 38 9 40 25 14 40 40 45 40 22 39 -0.58 -123 0 0 41 1 53 3 53 39.8 12 64 -35 41 8 21 40 55 26 41 10 56 40 52 52 -0.58 -122 0 0 41 31 44 3 53 36.8 13 65 -35 41 38 11 41 25 17 41 40 46 41 22 43 -0.58 -121 0 0 42 1 12 3 53 33.5 14 65 -36 42 7 38 41 54 46 42 10 13 41 52 12 -0.59 -120 0 0 42 30 18 3 53 30.2 15 66 -37 42 36 44 42 23 52 42 39 18 42 21 18 -0.59 -119 0 0 42 59 1 3 53 26.6 16 67 -38 43 5 26 42 52 36 43 8 0 42 50 2 -0.59 -118 0 0 43 27 20 3 53 22.9 16 67 -38 43 33 45 43 20 56 43 36 19 43 18 22 -0.59 -117 0 0 43 55 16 3 53 19.1 17 68 -39 44 1 40 43 48 52 44 4 13 43 46 19 -0.59 -116 0 0 44 22 47 3 53 15.1 18 69 -39 44 29 10 44 16 25 44 31 44 44 13 51 -0.59 -115 0 0 44 49 54 3 53 10.9 19 70 -40 44 56 17 44 43 32 44 58 50 44 41 0 -0.59 -114 0 0 45 16 37 3 53 6.7 20 70 -41 45 22 59 45 10 16 45 25 32 45 7 43 -0.59 -113 0 0 45 42 54 3 53 2.3 21 71 -41 45 49 15 45 36 34 45 51 48 45 34 2 -0.59 -112 0 0 46 8 47 3 52 57.8 21 72 -42 46 15 7 46 2 27 46 17 39 45 59 55 -0.59 -111 0 0 46 34 14 3 52 53.2 22 73 -42 46 40 33 46 27 55 46 43 5 46 25 24 -0.59 -110 0 0 46 59 16 3 52 48.5 23 73 -43 47 5 34 46 52 58 47 8 6 46 50 27 -0.59 -109 0 0 47 23 52 3 52 43.7 24 74 -43 47 30 9 47 17 35 47 32 40 47 15 4 -0.59 -108 0 0 47 48 2 3 52 38.8 24 75 -44 47 54 19 47 41 46 47 56 49 47 39 16 -0.59 -107 0 0 48 11 47 3 52 33.8 25 76 -44 48 18 2 48 5 32 48 20 33 48 3 2 -0.59 -106 0 0 48 35 5 3 52 28.7 26 77 -45 48 41 20 48 28 51 48 43 50 48 26 22 -0.60 -105 0 0 48 57 58 3 52 23.5 27 78 -45 49 4 12 48 51 45 49 6 42 48 49 16 -0.60 -104 0 0 49 20 26 3 52 18.3 27 78 -46 49 26 38 49 14 13 49 29 7 49 11 45 -0.60 -103 0 0 49 42 27 3 52 13.0 28 79 -46 49 48 39 49 36 16 49 51 7 49 33 47 -0.60 -102 0 0 50 4 3 3 52 7.7 29 80 -47 50 10 13 49 57 52 50 12 42 49 55 24 -0.60 -101 0 0 50 25 12 3 52 2.3 29 81 -47 50 31 22 50 19 3 50 33 50 50 16 36 -0.60 -100 0 0 50 45 57 3 51 56.8 30 82 -47 50 52 5 50 39 49 50 54 33 50 37 22 -0.60 - 99 0 0 51 6 15 3 51 51.3 31 83 -48 51 12 23 51 0 9 51 14 50 50 57 42 -0.60 - 98 0 0 51 26 9 3 51 45.7 31 84 -48 51 32 15 51 20 3 51 34 42 51 17 37 -0.60 - 97 0 0 51 45 37 3 51 40.1 32 85 -48 51 51 42 51 39 32 51 54 8 51 37 6 -0.60 - 96 0 0 52 4 39 3 51 34.4 32 86 -49 52 10 43 51 58 36 52 13 9 51 56 10 -0.60 - 95 0 0 52 23 17 3 51 28.7 33 87 -49 52 29 20 52 17 14 52 31 46 52 14 49 -0.60 - 94 0 0 52 41 30 3 51 23.0 34 88 -49 52 47 32 52 35 28 52 49 57 52 33 4 -0.60 - 93 0 0 52 59 18 3 51 17.3 34 89 -49 53 5 19 52 53 18 53 7 43 52 50 53 -0.60 - 92 0 0 53 16 42 3 51 11.5 35 89 -50 53 22 41 53 10 42 53 25 6 53 8 18 -0.60 - 91 0 0 53 33 41 3 51 5.7 35 90 -50 53 39 40 53 27 43 53 42 3 53 25 19 -0.60 - 90 0 0 53 50 16 3 50 59.8 36 91 -50 53 56 14 53 44 19 53 58 37 53 41 56 -0.60 - 89 0 0 54 6 27 3 50 54.0 37 92 -50 54 12 24 54 0 31 54 14 46 53 58 8 -0.60 - 88 0 0 54 22 14 3 50 48.1 37 93 -51 54 28 10 54 16 19 54 30 32 54 13 57 -0.60 - 87 0 0 54 37 38 3 50 42.2 38 94 -51 54 43 32 54 31 44 54 45 54 54 29 22 -0.60 - 86 0 0 54 52 38 3 50 36.3 38 95 -51 54 58 32 54 46 45 55 0 53 54 44 24 -0.61 - 85 0 0 55 7 16 3 50 30.4 39 97 -51 55 13 8 55 1 24 55 15 29 54 59 3 -0.61 - 84 0 0 55 21 30 3 50 24.4 39 98 -51 55 27 21 55 15 39 55 29 42 55 13 19 -0.61 - 83 0 0 55 35 22 3 50 18.5 40 99 -51 55 41 12 55 29 32 55 43 32 55 27 12 -0.61 - 82 0 0 55 48 51 3 50 12.5 40 100 -51 55 54 40 55 43 2 55 57 0 55 40 42 -0.61 - 81 0 0 56 1 58 3 50 6.5 41 101 -52 56 7 46 55 56 10 56 10 5 55 53 50 -0.61 - 80 0 0 56 14 42 3 50 0.6 41 102 -52 56 20 30 56 8 55 56 22 49 56 6 37 -0.61 - 79 0 0 56 27 5 3 49 54.6 42 103 -52 56 32 52 56 21 19 56 35 10 56 19 1 -0.61 - 78 0 0 56 39 7 3 49 48.6 42 104 -52 56 44 52 56 33 22 56 47 10 56 31 4 -0.61 - 77 0 0 56 50 47 3 49 42.6 43 105 -52 56 56 31 56 45 3 56 58 49 56 42 45 -0.61 - 76 0 0 57 2 5 3 49 36.6 43 106 -52 57 7 49 56 56 22 57 10 7 56 54 5 -0.61 - 75 0 0 57 13 3 3 49 30.6 44 107 -52 57 18 46 57 7 21 57 21 3 57 5 4 -0.61 - 74 0 0 57 23 40 3 49 24.6 44 109 -52 57 29 22 57 17 59 57 31 39 57 15 42 -0.61 - 73 0 0 57 33 57 3 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13 33 60 2 39 60 15 44 60 0 29 -0.62 - 47 0 0 60 10 26 3 46 41.7 54 143 -49 60 15 53 60 4 59 60 18 3 60 2 49 -0.62 - 46 0 0 60 12 29 3 46 35.6 54 144 -49 60 17 55 60 7 2 60 20 6 60 4 52 -0.62 - 45 0 0 60 14 15 3 46 29.5 54 146 -49 60 19 41 60 8 48 60 21 52 60 6 38 -0.62 - 44 0 0 60 15 44 3 46 23.3 54 147 -49 60 21 10 60 10 18 60 23 21 60 8 7 -0.62 - 43 0 0 60 16 56 3 46 17.2 55 149 -49 60 22 23 60 11 31 60 24 33 60 9 20 -0.62 - 42 0 0 60 17 52 3 46 11.1 55 150 -48 60 23 18 60 12 27 60 25 29 60 10 16 -0.62 - 41 0 0 60 18 32 3 46 4.9 55 152 -48 60 23 58 60 13 6 60 26 8 60 10 56 -0.62 - 40 0 0 60 18 54 3 45 58.7 55 153 -48 60 24 20 60 13 28 60 26 31 60 11 18 -0.62 - 39 0 0 60 19 0 3 45 52.5 55 154 -48 60 24 26 60 13 34 60 26 37 60 11 24 -0.62 - 38 0 0 60 18 50 3 45 46.3 56 156 -47 60 24 16 60 13 24 60 26 26 60 11 13 -0.62 - 37 0 0 60 18 22 3 45 40.1 56 157 -47 60 23 48 60 12 56 60 25 59 60 10 46 -0.62 - 36 0 0 60 17 38 3 45 33.9 56 159 -47 60 23 5 60 12 13 60 25 15 60 10 2 -0.62 - 35 0 0 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59 34 59 -0.62 - 22 0 0 59 37 59 3 44 4.4 58 181 -43 59 43 29 59 32 29 59 45 41 59 30 17 -0.62 - 21 0 0 59 33 0 3 43 57.8 58 183 -42 59 38 31 59 27 30 59 40 43 59 25 18 -0.62 - 20 0 0 59 27 44 3 43 51.1 58 184 -42 59 33 15 59 22 13 59 35 28 59 20 1 -0.62 - 19 0 0 59 22 10 3 43 44.5 58 186 -42 59 27 42 59 16 39 59 29 55 59 14 26 -0.62 - 18 0 0 59 16 18 3 43 37.8 58 188 -41 59 21 51 59 10 46 59 24 4 59 8 33 -0.62 - 17 0 0 59 10 8 3 43 31.1 58 189 -41 59 15 41 59 4 36 59 17 55 59 2 23 -0.62 - 16 0 0 59 3 41 3 43 24.3 58 191 -41 59 9 14 58 58 7 59 11 28 58 55 54 -0.62 - 15 0 0 58 56 55 3 43 17.5 58 193 -40 59 2 29 58 51 21 59 4 43 58 49 7 -0.62 - 14 0 0 58 49 50 3 43 10.7 58 194 -40 58 55 25 58 44 16 58 57 39 58 42 2 -0.62 - 13 0 0 58 42 27 3 43 3.9 58 196 -40 58 48 2 58 36 52 58 50 17 58 34 38 -0.62 - 12 0 0 58 34 45 3 42 57.0 58 198 -39 58 40 21 58 29 9 58 42 36 58 26 55 -0.62 - 11 0 0 58 26 45 3 42 50.0 58 199 -39 58 32 22 58 21 8 58 34 37 58 18 53 -0.62 - 10 0 0 58 18 25 3 42 43.0 58 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49.8 38 275 -7 42 46 30 42 33 42 42 49 5 42 31 8 -0.61 43 0 0 42 11 42 3 35 41.7 37 276 -6 42 18 7 42 5 18 42 20 42 42 2 44 -0.61 44 0 0 41 42 57 3 35 33.7 36 277 -6 41 49 23 41 36 32 41 51 58 41 33 58 -0.61 45 0 0 41 13 52 3 35 25.8 35 278 -5 41 20 18 41 7 27 41 22 53 41 4 53 -0.61 46 0 0 40 44 27 3 35 17.9 35 279 -4 40 50 53 40 38 1 40 53 28 40 35 26 -0.61 47 0 0 40 14 41 3 35 10.1 34 279 -3 40 21 8 40 8 15 40 23 43 40 5 41 -0.61 48 0 0 39 44 37 3 35 2.4 33 280 -2 39 51 4 39 38 11 39 53 39 39 35 36 -0.61 49 0 0 39 14 15 3 34 54.8 32 281 -1 39 20 42 39 7 48 39 23 17 39 5 13 -0.61 50 0 0 38 43 34 3 34 47.4 31 282 0 38 50 2 38 37 7 38 52 37 38 34 33 -0.61 51 0 0 38 12 37 3 34 40.0 31 283 1 38 19 4 38 6 10 38 21 39 38 3 35 -0.61 52 0 0 37 41 22 3 34 32.8 30 284 2 37 47 50 37 34 55 37 50 25 37 32 20 -0.61 53 0 0 37 9 52 3 34 25.7 29 284 2 37 16 20 37 3 25 37 18 55 37 0 50 -0.61 54 0 0 36 38 7 3 34 18.7 28 285 3 36 44 35 36 31 40 36 47 10 36 29 5 -0.61 55 0 0 36 6 7 3 34 11.9 27 286 4 36 12 35 35 59 40 36 15 11 35 57 5 -0.61 56 0 0 35 33 55 3 34 5.3 26 286 5 35 40 22 35 27 27 35 42 58 35 24 53 -0.61 57 0 0 35 1 29 3 33 58.8 25 287 6 35 7 57 34 55 2 35 10 32 34 52 27 -0.61 58 0 0 34 28 52 3 33 52.5 24 288 7 34 35 19 34 22 25 34 37 54 34 19 50 -0.61 59 0 0 33 56 4 3 33 46.4 23 289 8 34 2 31 33 49 37 34 5 6 33 47 2 -0.61 60 0 0 33 23 5 3 33 40.4 22 289 9 33 29 33 33 16 39 33 32 8 33 14 4 -0.61 61 0 0 32 49 58 3 33 34.7 21 290 10 32 56 25 32 43 32 32 59 0 32 40 58 -0.61 62 0 0 32 16 43 3 33 29.2 20 290 11 32 23 9 32 10 17 32 25 44 32 7 43 -0.61 63 0 0 31 43 21 3 33 23.8 20 291 12 31 49 47 31 36 55 31 52 21 31 34 21 -0.61 64 0 0 31 9 52 3 33 18.7 19 292 13 31 16 18 31 3 27 31 18 52 31 0 53 -0.61 65 0 0 30 36 18 3 33 13.9 18 292 14 30 42 43 30 29 54 30 45 18 30 27 20 -0.61 66 0 0 30 2 40 3 33 9.2 17 293 15 30 9 5 29 56 16 30 11 39 29 53 43 -0.62 67 0 0 29 29 0 3 33 4.8 16 293 16 29 35 24 29 22 36 29 37 58 29 20 2 -0.62 68 0 0 28 55 17 3 33 0.7 15 294 17 29 1 40 28 48 54 29 4 14 28 46 20 -0.62 69 0 0 28 21 33 3 32 56.8 14 294 18 28 27 56 28 15 10 28 30 29 28 12 37 -0.62 70 0 0 27 47 49 3 32 53.1 13 295 19 27 54 12 27 41 27 27 56 45 27 38 55 -0.62 71 0 0 27 14 7 3 32 49.8 11 295 20 27 20 28 27 7 45 27 23 1 27 5 13 -0.63 72 0 0 26 40 26 3 32 46.7 10 296 21 26 46 47 26 34 6 26 49 20 26 31 33 -0.63 73 0 0 26 6 49 3 32 43.9 9 296 22 26 13 10 26 0 30 26 15 42 25 57 58 -0.64 74 0 0 25 33 17 3 32 41.3 8 297 23 25 39 36 25 26 58 25 42 9 25 24 26 -0.64 75 0 0 24 59 50 3 32 39.1 7 297 24 25 6 9 24 53 32 25 8 41 24 51 0 -0.65 76 0 0 24 26 30 3 32 37.1 6 297 26 24 32 48 24 20 12 24 35 19 24 17 41 -0.67 77 0 0 23 53 17 3 32 35.5 5 298 27 23 59 34 23 47 0 24 2 5 23 44 30 -0.68 78 0 0 23 20 13 3 32 34.1 4 298 28 23 26 30 23 13 57 23 29 0 23 11 27 -0.71 79 0 0 22 47 19 3 32 33.0 3 299 29 22 53 35 22 41 4 22 56 5 22 38 34 -0.75 80 0 0 22 14 36 3 32 32.3 2 299 30 22 20 51 22 8 22 22 23 21 22 5 53 -0.84 81 0 0 21 42 5 3 32 31.8 1 299 31 21 48 19 21 35 52 21 50 48 21 33 23 -1.13 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 589-030868 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 26 13.2630 DE: +27 36 10.695 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 26 13.2631 DE: +27 36 10.695 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.7 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2509) Chukotka asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.014 distance from Earth [AU]: 1.66130 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 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): 0.023", 0.003", 94.097° remarks: * orbital elements for (2509)Chukotka : Mean anomaly = 89.0807907292 deg Arg. of pericenter = 348.9731079561 deg Long. of node = 343.4372258198 deg Inclination = 2.8497130424 deg Eccentricity = 0.1943372439 Semimajor axis = 2.4569402272 AU Perihelion dist = 1.9794652351 AU Mag: H = 12.99, G = 0.15 Epoch of elements : MJD 60638.15504925 TDT (2024 Nov 24.1550) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr24,2.03,2024,11,24,3.721173,0.068950,0.518405,-4.716946,0.627196,-0.003280,-0.000204,0.000001,0.000000 -22.4637,27.5887,120.86,-20.63,False UCAC4 589-030868,6.43701750,27.6029708,12.36,11.74,11.41,0.0,0,,6.46340980,27.5886779,5.13,5.02,0,0,0 2509,Chukotka,16.86,17.147,1.6613,0,0,-1.879,3.32,,1.4,0 0,89.0411,2024,11,24,348.9731,343.4372,2.8497,0.19434,2.45694,1.97947,12.99,5.0,0.15 1.200,0.0227,0.0025,94,0.0029,Known errors,0.80,0,-1,-1 20241124_030868,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org