IOTA/IOTA-ES occultation update for (3686) Antoku / TYC 6262-00208-1 event on 2024 Oct 29, 13:31 UT Visible from Summary ------- On 2024 Oct 29 UT, the 17.3483680169 km diameter asteroid (3686) Antoku will occult a 10.3 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.65 mag to 17.98 mag (the magnitude of the asteroid) for at most 0.480 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 Oct 29, 13:29 - 2024 Oct 29, 13:34 * geocentric midpoint of event [JD]: 2460613.06369692 * magnitude of target star: 10.33 * magnitude drop [mag]: 7.65 * estimated maximum duration [s]: 0.480 * Moon: 8 % sunlit, 86° distance * Sun: 53° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 95°) * approx speed of asteroid's shadow [km/s]: 37.1502 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6262-00208-1 by 3686 Antoku on 2024 Oct 29 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 - 42 0 0 38 49 33 13 29 29.6 1 118 36 38 42 36 38 56 31 38 40 41 38 58 26 .... - 41 0 0 38 24 49 13 29 29.7 1 119 36 38 17 53 38 31 47 38 15 58 38 33 42 -0.42 - 40 0 0 38 0 2 13 29 29.8 2 119 37 37 53 6 38 6 59 37 51 11 38 8 55 -0.56 - 39 0 0 37 35 13 13 29 30.0 3 120 37 37 28 17 37 42 9 37 26 22 37 44 5 -0.62 - 38 0 0 37 10 21 13 29 30.2 4 121 38 37 3 26 37 17 18 37 1 31 37 19 13 -0.66 - 37 0 0 36 45 29 13 29 30.5 5 121 39 36 38 34 36 52 25 36 36 39 36 54 20 -0.68 - 36 0 0 36 20 37 13 29 30.8 6 122 39 36 13 42 36 27 32 36 11 47 36 29 27 -0.70 - 35 0 0 35 55 44 13 29 31.2 7 122 40 35 48 50 36 2 39 35 46 56 36 4 34 -0.71 - 34 0 0 35 30 53 13 29 31.6 8 123 40 35 24 0 35 37 48 35 22 5 35 39 42 -0.72 - 33 0 0 35 6 4 13 29 32.1 9 124 41 34 59 11 35 12 58 34 57 17 35 14 52 -0.73 - 32 0 0 34 41 17 13 29 32.7 10 124 41 34 34 25 34 48 11 34 32 31 34 50 5 -0.74 - 31 0 0 34 16 34 13 29 33.3 10 125 42 34 9 42 34 23 27 34 7 48 34 25 21 -0.74 - 30 0 0 33 51 55 13 29 33.9 11 125 42 33 45 3 33 58 47 33 43 10 34 0 41 -0.75 - 29 0 0 33 27 20 13 29 34.7 12 126 43 33 20 29 33 34 11 33 18 36 33 36 5 -0.75 - 28 0 0 33 2 51 13 29 35.5 13 126 43 32 56 1 33 9 41 32 54 7 33 11 35 -0.75 - 27 0 0 32 38 28 13 29 36.3 14 127 44 32 31 38 32 45 18 32 29 45 32 47 11 -0.76 - 26 0 0 32 14 12 13 29 37.2 15 128 44 32 7 23 32 21 1 32 5 30 32 22 54 -0.76 - 25 0 0 31 50 3 13 29 38.2 16 128 45 31 43 15 31 56 52 31 41 22 31 58 45 -0.76 - 24 0 0 31 26 3 13 29 39.2 17 129 45 31 19 15 31 32 51 31 17 23 31 34 44 -0.76 - 23 0 0 31 2 11 13 29 40.3 18 129 45 30 55 25 31 8 59 30 53 33 31 10 51 -0.77 - 22 0 0 30 38 30 13 29 41.4 19 130 46 30 31 44 30 45 16 30 29 52 30 47 9 -0.77 - 21 0 0 30 14 58 13 29 42.6 20 131 46 30 8 13 30 21 44 30 6 22 30 23 36 -0.77 - 20 0 0 29 51 38 13 29 43.9 21 131 46 29 44 54 29 58 23 29 43 2 30 0 15 -0.77 - 19 0 0 29 28 30 13 29 45.2 21 132 46 29 21 46 29 35 14 29 19 55 29 37 6 -0.77 - 18 0 0 29 5 34 13 29 46.6 22 132 47 28 58 51 29 12 17 28 57 0 29 14 9 -0.77 - 17 0 0 28 42 51 13 29 48.0 23 133 47 28 36 9 28 49 33 28 34 18 28 51 24 -0.77 - 16 0 0 28 20 21 13 29 49.5 24 134 47 28 13 40 28 27 3 28 11 49 28 28 54 -0.77 - 15 0 0 27 58 6 13 29 51.0 25 134 47 27 51 26 28 4 47 27 49 35 28 6 38 -0.78 - 14 0 0 27 36 6 13 29 52.6 26 135 47 27 29 27 27 42 46 27 27 36 27 44 37 -0.78 - 13 0 0 27 14 21 13 29 54.2 27 136 47 27 7 43 27 21 0 27 5 53 27 22 51 -0.78 - 12 0 0 26 52 53 13 29 55.9 28 136 47 26 46 15 26 59 31 26 44 25 27 1 21 -0.78 - 11 0 0 26 31 41 13 29 57.7 29 137 47 26 25 4 26 38 18 26 23 14 26 40 8 -0.78 - 10 0 0 26 10 46 13 29 59.5 29 138 47 26 4 10 26 17 23 26 2 21 26 19 13 -0.78 - 9 0 0 25 50 9 13 30 1.3 30 138 47 25 43 34 25 56 45 25 41 45 25 58 35 -0.78 - 8 0 0 25 29 51 13 30 3.2 31 139 47 25 23 17 25 36 26 25 21 28 25 38 15 -0.78 - 7 0 0 25 9 51 13 30 5.2 32 140 47 25 3 18 25 16 25 25 1 29 25 18 15 -0.78 - 6 0 0 24 50 11 13 30 7.2 33 141 47 24 43 39 24 56 44 24 41 50 24 58 33 -0.78 - 5 0 0 24 30 51 13 30 9.2 34 141 46 24 24 19 24 37 23 24 22 31 24 39 12 -0.78 - 4 0 0 24 11 51 13 30 11.3 35 142 46 24 5 20 24 18 22 24 3 32 24 20 10 -0.78 - 3 0 0 23 53 11 13 30 13.4 35 143 46 23 46 41 23 59 42 23 44 53 24 1 30 -0.79 - 2 0 0 23 34 53 13 30 15.6 36 144 46 23 28 24 23 41 23 23 26 36 23 43 11 -0.79 - 1 0 0 23 16 56 13 30 17.8 37 144 45 23 10 28 23 23 26 23 8 41 23 25 13 -0.79 0 0 0 22 59 22 13 30 20.1 38 145 45 22 52 54 23 5 50 22 51 7 23 7 38 -0.79 1 0 0 22 42 10 13 30 22.4 38 146 45 22 35 43 22 48 38 22 33 56 22 50 25 -0.79 2 0 0 22 25 21 13 30 24.7 39 147 44 22 18 55 22 31 48 22 17 8 22 33 35 -0.79 3 0 0 22 8 55 13 30 27.1 40 148 44 22 2 30 22 15 21 22 0 43 22 17 8 -0.79 4 0 0 21 52 53 13 30 29.5 41 149 43 21 46 28 21 59 18 21 44 42 22 1 5 -0.79 5 0 0 21 37 15 13 30 32.0 41 150 43 21 30 51 21 43 39 21 29 5 21 45 26 -0.79 6 0 0 21 22 1 13 30 34.5 42 151 42 21 15 38 21 28 25 21 13 52 21 30 11 -0.79 7 0 0 21 7 12 13 30 37.0 43 152 42 21 0 49 21 13 35 20 59 4 21 15 21 -0.79 8 0 0 20 52 47 13 30 39.5 43 153 41 20 46 26 20 59 10 20 44 40 21 0 56 -0.79 9 0 0 20 38 48 13 30 42.1 44 154 41 20 32 27 20 45 10 20 30 42 20 46 55 -0.79 10 0 0 20 25 14 13 30 44.7 45 155 40 20 18 54 20 31 35 20 17 9 20 33 21 -0.79 11 0 0 20 12 7 13 30 47.4 45 156 40 20 5 47 20 18 27 20 4 2 20 20 12 -0.79 12 0 0 19 59 25 13 30 50.0 46 157 39 19 53 6 20 5 45 19 51 21 20 7 30 -0.79 13 0 0 19 47 9 13 30 52.7 46 159 39 19 40 51 19 53 28 19 39 6 19 55 13 -0.79 14 0 0 19 35 20 13 30 55.4 47 160 38 19 29 2 19 41 39 19 27 18 19 43 23 -0.79 15 0 0 19 23 58 13 30 58.1 47 161 37 19 17 40 19 30 16 19 15 56 19 32 0 -0.79 16 0 0 19 13 2 13 31 0.9 48 162 37 19 6 46 19 19 20 19 5 1 19 21 4 -0.79 17 0 0 19 2 34 13 31 3.7 48 164 36 18 56 18 19 8 51 18 54 34 19 10 35 -0.80 18 0 0 18 52 33 13 31 6.4 49 165 35 18 46 17 18 58 50 18 44 33 19 0 34 -0.80 19 0 0 18 43 0 13 31 9.2 49 166 34 18 36 44 18 49 16 18 35 1 18 51 0 -0.80 20 0 0 18 33 54 13 31 12.1 49 168 34 18 27 39 18 40 9 18 25 55 18 41 53 -0.80 21 0 0 18 25 16 13 31 14.9 50 169 33 18 19 1 18 31 31 18 17 18 18 33 15 -0.80 22 0 0 18 17 6 13 31 17.7 50 170 32 18 10 52 18 23 20 18 9 8 18 25 4 -0.80 23 0 0 18 9 24 13 31 20.6 50 172 31 18 3 10 18 15 38 18 1 27 18 17 22 -0.80 24 0 0 18 2 10 13 31 23.5 51 173 31 17 55 57 18 8 24 17 54 14 18 10 7 -0.80 25 0 0 17 55 25 13 31 26.3 51 175 30 17 49 12 18 1 38 17 47 29 18 3 21 -0.80 26 0 0 17 49 8 13 31 29.2 51 176 29 17 42 55 17 55 21 17 41 12 17 57 4 -0.80 27 0 0 17 43 19 13 31 32.1 51 178 28 17 37 7 17 49 32 17 35 24 17 51 15 -0.80 28 0 0 17 37 59 13 31 35.0 51 179 27 17 31 47 17 44 12 17 30 5 17 45 55 -0.80 29 0 0 17 33 8 13 31 37.9 51 181 27 17 26 57 17 39 21 17 25 14 17 41 4 -0.80 30 0 0 17 28 46 13 31 40.8 51 182 26 17 22 35 17 34 58 17 20 52 17 36 41 -0.80 31 0 0 17 24 53 13 31 43.7 51 184 25 17 18 41 17 31 5 17 16 59 17 32 47 -0.80 32 0 0 17 21 28 13 31 46.6 51 185 24 17 15 17 17 27 40 17 13 34 17 29 23 -0.80 33 0 0 17 18 33 13 31 49.5 51 187 23 17 12 22 17 24 44 17 10 39 17 26 27 -0.80 34 0 0 17 16 6 13 31 52.4 51 188 22 17 9 55 17 22 17 17 8 13 17 24 0 -0.80 35 0 0 17 14 9 13 31 55.3 51 190 21 17 7 58 17 20 20 17 6 15 17 22 3 -0.80 36 0 0 17 12 40 13 31 58.2 51 191 21 17 6 29 17 18 51 17 4 47 17 20 34 -0.80 37 0 0 17 11 41 13 32 1.1 51 193 20 17 5 30 17 17 52 17 3 48 17 19 35 -0.80 38 0 0 17 11 11 13 32 3.9 51 194 19 17 5 0 17 17 22 17 3 18 17 19 4 -0.80 39 0 0 17 11 9 13 32 6.8 50 196 18 17 4 59 17 17 21 17 3 16 17 19 3 -0.80 40 0 0 17 11 37 13 32 9.6 50 197 17 17 5 27 17 17 49 17 3 44 17 19 31 -0.80 41 0 0 17 12 35 13 32 12.5 50 198 16 17 6 24 17 18 46 17 4 41 17 20 28 -0.80 42 0 0 17 14 1 13 32 15.3 49 200 15 17 7 50 17 20 12 17 6 8 17 21 55 -0.80 43 0 0 17 15 56 13 32 18.1 49 201 14 17 9 45 17 22 7 17 8 3 17 23 50 -0.80 44 0 0 17 18 20 13 32 20.9 49 202 13 17 12 9 17 24 31 17 10 27 17 26 14 -0.80 45 0 0 17 21 13 13 32 23.7 48 204 12 17 15 2 17 27 25 17 13 20 17 29 8 -0.80 46 0 0 17 24 35 13 32 26.4 48 205 11 17 18 24 17 30 47 17 16 42 17 32 30 -0.80 47 0 0 17 28 26 13 32 29.2 47 206 10 17 22 15 17 34 38 17 20 32 17 36 21 -0.80 48 0 0 17 32 46 13 32 31.9 47 207 10 17 26 35 17 38 59 17 24 52 17 40 42 -0.80 49 0 0 17 37 35 13 32 34.6 46 208 9 17 31 23 17 43 47 17 29 40 17 45 30 -0.80 50 0 0 17 42 52 13 32 37.2 46 210 8 17 36 40 17 49 5 17 34 57 17 50 48 -0.80 51 0 0 17 48 38 13 32 39.9 45 211 7 17 42 25 17 54 51 17 40 42 17 56 34 -0.80 52 0 0 17 54 52 13 32 42.5 45 212 6 17 48 39 18 1 5 17 46 56 18 2 49 -0.80 53 0 0 18 1 34 13 32 45.1 44 213 5 17 55 21 18 7 48 17 53 38 18 9 32 -0.80 54 0 0 18 8 45 13 32 47.6 43 214 4 18 2 32 18 14 59 18 0 48 18 16 43 -0.80 55 0 0 18 16 24 13 32 50.2 43 215 3 18 10 10 18 22 38 18 8 27 18 24 22 -0.80 56 0 0 18 24 31 13 32 52.7 42 216 2 18 18 17 18 30 46 18 16 33 18 32 30 -0.80 57 0 0 18 33 6 13 32 55.2 41 217 1 18 26 51 18 39 21 18 25 7 18 41 5 -0.80 58 0 0 18 42 8 13 32 57.6 41 218 0 18 35 53 18 48 24 18 34 9 18 50 8 -0.80 59 0 0 18 51 38 13 33 0.0 40 219 -1 18 45 22 18 57 54 18 43 39 18 59 38 -0.80 60 0 0 19 1 35 13 33 2.4 39 219 -2 18 55 19 19 7 52 18 53 35 19 9 36 -0.80 61 0 0 19 12 0 13 33 4.7 38 220 -3 19 5 43 19 18 17 19 3 59 19 20 2 -0.80 62 0 0 19 22 52 13 33 7.0 38 221 -4 19 16 34 19 29 9 19 14 50 19 30 54 -0.80 63 0 0 19 34 10 13 33 9.2 37 222 -5 19 27 52 19 40 28 19 26 8 19 42 13 -0.80 64 0 0 19 45 55 13 33 11.5 36 223 -6 19 39 36 19 52 14 19 37 52 19 53 59 -0.80 65 0 0 19 58 6 13 33 13.6 35 223 -7 19 51 47 20 4 26 19 50 2 20 6 11 -0.80 66 0 0 20 10 43 13 33 15.8 35 224 -8 20 4 24 20 17 4 20 2 39 20 18 49 -0.80 67 0 0 20 23 47 13 33 17.9 34 225 -9 20 17 27 20 30 7 20 15 42 20 31 53 -0.80 68 0 0 20 37 16 13 33 19.9 33 225 -10 20 30 55 20 43 37 20 29 10 20 45 23 -0.80 69 0 0 20 51 10 13 33 21.9 32 226 -11 20 44 48 20 57 32 20 43 3 20 59 18 -0.80 70 0 0 21 5 29 13 33 23.8 31 227 -12 20 59 7 21 11 52 20 57 21 21 13 38 -0.80 71 0 0 21 20 13 13 33 25.8 30 227 -13 21 13 50 21 26 37 21 12 4 21 28 23 -0.80 72 0 0 21 35 22 13 33 27.6 29 228 -14 21 28 58 21 41 46 21 27 12 21 43 32 -0.80 73 0 0 21 50 54 13 33 29.4 29 229 -15 21 44 30 21 57 19 21 42 44 21 59 6 -0.80 74 0 0 22 6 51 13 33 31.2 28 229 -16 22 0 26 22 13 16 21 58 39 22 15 3 -0.80 75 0 0 22 23 11 13 33 32.9 27 230 -16 22 16 45 22 29 37 22 14 58 22 31 24 -0.80 76 0 0 22 39 54 13 33 34.5 26 230 -17 22 33 27 22 46 21 22 31 41 22 48 8 -0.80 77 0 0 22 57 0 13 33 36.1 25 231 -18 22 50 32 23 3 28 22 48 45 23 5 15 -0.80 78 0 0 23 14 28 13 33 37.7 24 231 -19 23 8 0 23 20 57 23 6 13 23 22 44 -0.80 79 0 0 23 32 18 13 33 39.2 23 232 -20 23 25 49 23 38 47 23 24 2 23 40 35 -0.80 80 0 0 23 50 30 13 33 40.6 22 233 -21 23 44 0 23 57 0 23 42 12 23 58 48 -0.81 81 0 0 24 9 2 13 33 42.0 21 233 -22 24 2 32 24 15 34 24 0 44 24 17 22 -0.81 82 0 0 24 27 56 13 33 43.3 20 234 -23 24 21 24 24 34 28 24 19 36 24 36 16 -0.81 83 0 0 24 47 9 13 33 44.6 20 234 -24 24 40 37 24 53 42 24 38 49 24 55 31 -0.81 84 0 0 25 6 43 13 33 45.8 19 235 -25 25 0 10 25 13 16 24 58 21 25 15 5 -0.81 85 0 0 25 26 35 13 33 47.0 18 235 -26 25 20 2 25 33 10 25 18 13 25 34 59 -0.81 86 0 0 25 46 47 13 33 48.1 17 236 -27 25 40 12 25 53 22 25 38 23 25 55 11 -0.81 87 0 0 26 7 16 13 33 49.1 16 236 -28 26 0 41 26 13 52 25 58 52 26 15 42 -0.81 88 0 0 26 28 3 13 33 50.1 15 237 -29 26 21 27 26 34 40 26 19 38 26 36 30 -0.81 89 0 0 26 49 8 13 33 51.0 14 237 -30 26 42 30 26 55 45 26 40 41 26 57 35 -0.81 90 0 0 27 10 28 13 33 51.9 13 238 -31 27 3 51 27 17 7 27 2 1 27 18 57 -0.81 91 0 0 27 32 5 13 33 52.6 12 238 -31 27 25 27 27 38 45 27 23 37 27 40 36 -0.81 92 0 0 27 53 58 13 33 53.4 11 239 -32 27 47 18 28 0 38 27 45 28 28 2 29 -0.81 93 0 0 28 16 5 13 33 54.1 10 239 -33 28 9 25 28 22 47 28 7 34 28 24 38 -0.81 94 0 0 28 38 27 13 33 54.7 9 240 -34 28 31 46 28 45 9 28 29 55 28 47 1 -0.82 95 0 0 29 1 3 13 33 55.2 8 240 -35 28 54 21 29 7 46 28 52 30 29 9 37 -0.82 96 0 0 29 23 51 13 33 55.7 7 241 -36 29 17 8 29 30 35 29 15 17 29 32 26 -0.82 97 0 0 29 46 52 13 33 56.2 6 241 -37 29 40 8 29 53 36 29 38 17 29 55 28 -0.83 98 0 0 30 10 4 13 33 56.5 5 242 -37 30 3 20 30 16 50 30 1 28 30 18 42 -0.83 99 0 0 30 33 28 13 33 56.8 4 242 -38 30 26 43 30 40 14 30 24 51 30 42 6 -0.84 100 0 0 30 57 2 13 33 57.1 4 243 -39 30 50 16 31 3 49 30 48 24 31 5 42 -0.85 101 0 0 31 20 46 13 33 57.3 3 243 -40 31 13 59 31 27 34 31 12 7 31 29 26 -0.87 102 0 0 31 44 39 13 33 57.4 2 244 -41 31 37 51 31 51 27 31 35 59 31 53 20 -0.91 103 0 0 32 8 40 13 33 57.5 1 244 -41 32 1 52 32 15 29 31 59 59 32 17 22 -1.06 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6262-00208-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 57 49.0643 DE: -21 13 48.004 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 57 49.0642 DE: -21 13 48.004 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.3 * B mag [mag]: 11.5 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3686) Antoku asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.008 distance from Earth [AU]: 3.04460 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.011", 0.001", 95.352° remarks: * orbital elements for (3686)Antoku : Mean anomaly = 58.3484525444 deg Arg. of pericenter = 78.7545874786 deg Long. of node = 134.5335427275 deg Inclination = 5.7258086974 deg Eccentricity = 0.1477243942 Semimajor axis = 2.7403077542 AU Perihelion dist = 2.3354974513 AU Mag: H = 12.57, G = 0.15 Epoch of elements : MJD 60612.56369671 TDT (2024 Oct 29.5637) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,0.48,2024,10,29,13.528726,0.039612,0.622641,20.925014,-1.351804,0.004641,0.000126,-0.000001,0.000000 28.5177,-21.2333,-27.01,-13.73,False TYC 6262-00208-1,17.96362902,-21.2300011,11.46,10.33,9.72,0.2,0,,17.98810824,-21.2332843,7.65,7.81,0,0,0 3686,Antoku,17.98,17.790,3.0446,0,0,4.323,-3.90,,1.2,0 0,58.2260,2024,10,29,78.7546,134.5335,5.7258,0.14772,2.74031,2.33550,12.57,5.0,0.15 1.138,0.0113,0.0011,95,0.0011,Known errors,0.73,0,-1,-1 20241029_0208-1,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org