IOTA/IOTA-ES occultation update for (824) Anastasia / TYC 6237-02528-1 event on 2024 Oct 10, 00:09 UT Visible from Summary ------- On 2024 Oct 10 UT, the 31.281 km diameter asteroid (824) Anastasia will occult a 10.4 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.93 mag to 15.36 mag (the magnitude of the asteroid) for at most 0.930 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 10, 00:07 - 2024 Oct 10, 00:12 * geocentric midpoint of event [JD]: 2460593.50682829 * magnitude of target star: 10.44 * magnitude drop [mag]: 4.93 * estimated maximum duration [s]: 0.930 * Moon: 41 % sunlit, 20° distance * Sun: 62° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 47 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.002", 100°) * approx speed of asteroid's shadow [km/s]: 33.6688 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6237-02528-1 by 824 Anastasia on 2024 Oct 10 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 176 0 0 54 41 50 0 7 44.6 0 123 29 54 26 44 54 57 1 54 23 20 55 0 28 .... 177 0 0 54 19 8 0 7 44.6 1 124 29 54 4 2 54 34 20 54 0 38 54 37 46 -0.60 178 0 0 53 56 12 0 7 44.7 2 125 29 53 41 6 54 11 24 53 37 42 54 14 51 -0.79 179 0 0 53 33 3 0 7 44.8 3 126 30 53 17 56 53 48 15 53 14 32 53 51 41 -0.88 -180 0 0 53 9 40 0 7 45.0 3 127 30 52 54 33 53 24 52 52 51 9 53 28 19 -0.93 -179 0 0 52 46 5 0 7 45.2 4 127 30 52 30 58 53 1 17 52 27 34 53 4 43 -0.96 -178 0 0 52 22 17 0 7 45.5 5 128 31 52 7 11 52 37 29 52 3 47 52 40 56 -0.99 -177 0 0 51 58 19 0 7 45.8 5 129 31 51 43 13 52 13 30 51 39 49 52 16 57 -1.00 -176 0 0 51 34 9 0 7 46.2 6 130 31 51 19 4 51 49 20 51 15 40 51 52 46 -1.02 -175 0 0 51 9 50 0 7 46.6 7 131 32 50 54 45 51 25 0 50 51 21 51 28 26 -1.03 -174 0 0 50 45 21 0 7 47.1 8 131 32 50 30 16 51 0 30 50 26 52 51 3 57 -1.04 -173 0 0 50 20 42 0 7 47.6 8 132 32 50 5 38 50 35 51 50 2 15 50 39 17 -1.04 -172 0 0 49 55 56 0 7 48.2 9 133 32 49 40 53 50 11 4 49 37 30 50 14 30 -1.05 -171 0 0 49 31 2 0 7 48.8 10 134 32 49 16 0 49 46 9 49 12 37 49 49 35 -1.06 -170 0 0 49 6 2 0 7 49.5 11 135 33 48 51 1 49 21 8 48 47 38 49 24 33 -1.06 -169 0 0 48 40 56 0 7 50.2 11 135 33 48 25 56 48 56 1 48 22 34 48 59 26 -1.06 -168 0 0 48 15 44 0 7 51.0 12 136 33 48 0 46 48 30 48 47 57 24 48 34 13 -1.07 -167 0 0 47 50 29 0 7 51.9 13 137 33 47 35 32 48 5 31 47 32 10 48 8 55 -1.07 -166 0 0 47 25 10 0 7 52.8 14 138 33 47 10 14 47 40 10 47 6 52 47 43 34 -1.07 -165 0 0 46 59 48 0 7 53.8 15 138 33 46 44 54 47 14 47 46 41 32 47 18 11 -1.08 -164 0 0 46 34 24 0 7 54.8 15 139 34 46 19 31 46 49 21 46 16 10 46 52 45 -1.08 -163 0 0 46 8 59 0 7 55.9 16 140 34 45 54 8 46 23 54 45 50 47 46 27 17 -1.08 -162 0 0 45 43 33 0 7 57.1 17 141 34 45 28 44 45 58 27 45 25 24 46 1 50 -1.08 -161 0 0 45 18 8 0 7 58.3 18 142 34 45 3 21 45 33 0 45 0 2 45 36 23 -1.09 -160 0 0 44 52 45 0 7 59.6 18 143 34 44 38 0 45 7 35 44 34 41 45 10 57 -1.09 -159 0 0 44 27 24 0 8 0.9 19 143 34 44 12 41 44 42 12 44 9 22 44 45 33 -1.09 -158 0 0 44 2 6 0 8 2.3 20 144 34 43 47 25 44 16 52 43 44 6 44 20 13 -1.09 -157 0 0 43 36 52 0 8 3.7 21 145 34 43 22 13 43 51 35 43 18 55 43 54 56 -1.09 -156 0 0 43 11 42 0 8 5.2 21 146 34 42 57 5 43 26 24 42 53 48 43 29 44 -1.09 -155 0 0 42 46 38 0 8 6.8 22 147 33 42 32 4 43 1 18 42 28 47 43 4 37 -1.09 -154 0 0 42 21 41 0 8 8.4 23 147 33 42 7 8 42 36 18 42 3 52 42 39 37 -1.10 -153 0 0 41 56 51 0 8 10.1 24 148 33 41 42 21 42 11 25 41 39 5 42 14 44 -1.10 -152 0 0 41 32 8 0 8 11.8 24 149 33 41 17 41 41 46 41 41 14 26 41 49 58 -1.10 -151 0 0 41 7 35 0 8 13.6 25 150 33 40 53 10 41 22 5 40 49 55 41 25 22 -1.10 -150 0 0 40 43 12 0 8 15.5 26 151 33 40 28 49 40 57 39 40 25 35 41 0 56 -1.10 -149 0 0 40 18 59 0 8 17.4 27 152 32 40 4 38 40 33 24 40 1 25 40 36 40 -1.10 -148 0 0 39 54 57 0 8 19.4 27 153 32 39 40 39 40 9 19 39 37 26 40 12 35 -1.10 -147 0 0 39 31 7 0 8 21.4 28 154 32 39 16 52 39 45 27 39 13 39 39 48 42 -1.10 -146 0 0 39 7 31 0 8 23.4 29 155 32 38 53 18 39 21 48 38 50 6 39 25 2 -1.10 -145 0 0 38 44 7 0 8 25.6 29 156 31 38 29 57 38 58 22 38 26 46 39 1 36 -1.10 -144 0 0 38 20 59 0 8 27.7 30 156 31 38 6 51 38 35 11 38 3 40 38 38 24 -1.11 -143 0 0 37 58 5 0 8 30.0 31 157 30 37 43 59 38 12 14 37 40 49 38 15 27 -1.11 -142 0 0 37 35 27 0 8 32.2 31 158 30 37 21 24 37 49 34 37 18 14 37 52 46 -1.11 -141 0 0 37 13 5 0 8 34.5 32 159 30 36 59 5 37 27 10 36 55 56 37 30 21 -1.11 -140 0 0 36 51 1 0 8 36.9 33 160 29 36 37 3 37 5 3 36 33 54 37 8 13 -1.11 -139 0 0 36 29 14 0 8 39.3 33 161 29 36 15 19 36 43 13 36 12 11 36 46 24 -1.11 -138 0 0 36 7 46 0 8 41.8 34 162 28 35 53 53 36 21 43 35 50 46 36 24 52 -1.11 -137 0 0 35 46 37 0 8 44.3 34 164 28 35 32 46 36 0 31 35 29 39 36 3 40 -1.11 -136 0 0 35 25 47 0 8 46.8 35 165 27 35 11 59 35 39 39 35 8 53 35 42 48 -1.11 -135 0 0 35 5 18 0 8 49.4 36 166 27 34 51 33 35 19 7 34 48 27 35 22 15 -1.11 -134 0 0 34 45 10 0 8 52.0 36 167 26 34 31 27 34 58 57 34 28 22 35 2 4 -1.11 -133 0 0 34 25 23 0 8 54.6 37 168 26 34 11 42 34 39 7 34 8 38 34 42 14 -1.11 -132 0 0 34 5 58 0 8 57.3 37 169 25 33 52 20 34 19 40 33 49 16 34 22 46 -1.12 -131 0 0 33 46 56 0 9 0.0 38 170 25 33 33 20 34 0 35 33 30 16 34 3 41 -1.12 -130 0 0 33 28 16 0 9 2.7 38 171 24 33 14 43 33 41 53 33 11 40 33 44 59 -1.12 -129 0 0 33 10 0 0 9 5.5 38 173 23 32 56 29 33 23 35 32 53 26 33 26 40 -1.12 -128 0 0 32 52 8 0 9 8.3 39 174 23 32 38 39 33 5 41 32 35 37 33 8 45 -1.12 -127 0 0 32 34 41 0 9 11.1 39 175 22 32 21 14 32 48 11 32 18 12 32 51 15 -1.12 -126 0 0 32 17 38 0 9 13.9 40 176 21 32 4 13 32 31 6 32 1 12 32 34 9 -1.12 -125 0 0 32 1 0 0 9 16.8 40 177 21 31 47 38 32 14 26 31 44 37 32 17 29 -1.12 -124 0 0 31 44 48 0 9 19.7 40 179 20 31 31 28 31 58 12 31 28 28 32 1 15 -1.12 -123 0 0 31 29 3 0 9 22.6 40 180 19 31 15 44 31 42 25 31 12 44 31 45 26 -1.12 -122 0 0 31 13 43 0 9 25.5 41 181 18 31 0 27 31 27 3 30 57 27 31 30 4 -1.12 -121 0 0 30 58 51 0 9 28.4 41 182 18 30 45 36 31 12 9 30 42 37 31 15 9 -1.12 -120 0 0 30 44 25 0 9 31.4 41 184 17 30 31 12 30 57 41 30 28 14 31 0 42 -1.12 -119 0 0 30 30 27 0 9 34.3 41 185 16 30 17 16 30 43 41 30 14 18 30 46 41 -1.12 -118 0 0 30 16 57 0 9 37.3 41 186 16 30 3 48 30 30 9 30 0 50 30 33 9 -1.12 -117 0 0 30 3 54 0 9 40.3 41 188 15 29 50 47 30 17 5 29 47 50 30 20 4 -1.12 -116 0 0 29 51 20 0 9 43.2 42 189 14 29 38 14 30 4 29 29 35 17 30 7 28 -1.12 -115 0 0 29 39 14 0 9 46.2 42 190 13 29 26 10 29 52 22 29 23 14 29 55 20 -1.12 -114 0 0 29 27 38 0 9 49.2 42 192 12 29 14 35 29 40 44 29 11 39 29 43 42 -1.12 -113 0 0 29 16 30 0 9 52.2 42 193 12 29 3 29 29 29 34 29 0 33 29 32 32 -1.13 -112 0 0 29 5 52 0 9 55.2 42 194 11 28 52 52 29 18 55 28 49 56 29 21 52 -1.13 -111 0 0 28 55 43 0 9 58.1 42 195 10 28 42 44 29 8 44 28 39 49 29 11 41 -1.13 -110 0 0 28 46 3 0 10 1.1 41 197 9 28 33 6 28 59 3 28 30 11 29 2 0 -1.13 -109 0 0 28 36 54 0 10 4.1 41 198 8 28 23 58 28 49 53 28 21 3 28 52 49 -1.13 -108 0 0 28 28 14 0 10 7.0 41 199 7 28 15 19 28 41 12 28 12 25 28 44 8 -1.13 -107 0 0 28 20 5 0 10 10.0 41 201 7 28 7 11 28 33 1 28 4 17 28 35 57 -1.13 -106 0 0 28 12 26 0 10 12.9 41 202 6 27 59 33 28 25 21 27 56 39 28 28 17 -1.13 -105 0 0 28 5 17 0 10 15.8 41 203 5 27 52 26 28 18 12 27 49 32 28 21 7 -1.13 -104 0 0 27 58 39 0 10 18.8 40 204 4 27 45 48 28 11 33 27 42 55 28 14 28 -1.13 -103 0 0 27 52 32 0 10 21.6 40 205 3 27 39 42 28 5 25 27 36 48 28 8 20 -1.13 -102 0 0 27 46 55 0 10 24.5 40 207 2 27 34 6 27 59 47 27 31 13 28 2 42 -1.13 -101 0 0 27 41 49 0 10 27.4 39 208 1 27 29 1 27 54 41 27 26 8 27 57 36 -1.13 -100 0 0 27 37 15 0 10 30.2 39 209 1 27 24 27 27 50 5 27 21 34 27 53 0 -1.13 - 99 0 0 27 33 11 0 10 33.0 39 210 0 27 20 24 27 46 1 27 17 31 27 48 56 -1.13 - 98 0 0 27 29 38 0 10 35.8 38 211 -1 27 16 52 27 42 28 27 13 59 27 45 22 -1.13 - 97 0 0 27 26 37 0 10 38.6 38 212 -2 27 13 51 27 39 26 27 10 58 27 42 20 -1.13 - 96 0 0 27 24 6 0 10 41.3 37 213 -3 27 11 21 27 36 55 27 8 28 27 39 49 -1.13 - 95 0 0 27 22 7 0 10 44.0 37 214 -4 27 9 22 27 34 56 27 6 29 27 37 50 -1.13 - 94 0 0 27 20 39 0 10 46.7 36 215 -5 27 7 54 27 33 27 27 5 2 27 36 21 -1.13 - 93 0 0 27 19 42 0 10 49.3 36 216 -6 27 6 57 27 32 30 27 4 5 27 35 24 -1.13 - 92 0 0 27 19 17 0 10 51.9 35 217 -7 27 6 32 27 32 5 27 3 39 27 34 59 -1.13 - 91 0 0 27 19 22 0 10 54.5 35 218 -7 27 6 37 27 32 10 27 3 45 27 35 4 -1.13 - 90 0 0 27 19 59 0 10 57.0 34 219 -8 27 7 14 27 32 47 27 4 22 27 35 41 -1.13 - 89 0 0 27 21 7 0 10 59.5 34 220 -9 27 8 22 27 33 56 27 5 30 27 36 50 -1.13 - 88 0 0 27 22 46 0 11 1.9 33 221 -10 27 10 1 27 35 35 27 7 9 27 38 29 -1.13 - 87 0 0 27 24 57 0 11 4.4 32 222 -11 27 12 11 27 37 46 27 9 19 27 40 40 -1.13 - 86 0 0 27 27 38 0 11 6.7 32 223 -12 27 14 52 27 40 27 27 12 0 27 43 21 -1.13 - 85 0 0 27 30 50 0 11 9.1 31 224 -13 27 18 4 27 43 40 27 15 12 27 46 34 -1.13 - 84 0 0 27 34 34 0 11 11.4 30 224 -14 27 21 47 27 47 24 27 18 54 27 50 18 -1.13 - 83 0 0 27 38 48 0 11 13.6 30 225 -15 27 26 1 27 51 38 27 23 8 27 54 33 -1.13 - 82 0 0 27 43 33 0 11 15.8 29 226 -16 27 30 45 27 56 24 27 27 52 27 59 18 -1.13 - 81 0 0 27 48 48 0 11 17.9 28 227 -16 27 36 0 28 1 40 27 33 7 28 4 35 -1.13 - 80 0 0 27 54 34 0 11 20.0 28 228 -17 27 41 45 28 7 27 27 38 52 28 10 22 -1.13 - 79 0 0 28 0 51 0 11 22.1 27 228 -18 27 48 1 28 13 44 27 45 8 28 16 39 -1.13 - 78 0 0 28 7 38 0 11 24.1 26 229 -19 27 54 47 28 20 32 27 51 53 28 23 27 -1.14 - 77 0 0 28 14 55 0 11 26.0 25 230 -20 28 2 3 28 27 50 27 59 9 28 30 46 -1.14 - 76 0 0 28 22 42 0 11 27.9 25 230 -21 28 9 49 28 35 38 28 6 55 28 38 34 -1.14 - 75 0 0 28 30 59 0 11 29.7 24 231 -22 28 18 5 28 43 56 28 15 11 28 46 52 -1.14 - 74 0 0 28 39 46 0 11 31.5 23 232 -23 28 26 51 28 52 44 28 23 56 28 55 40 -1.14 - 73 0 0 28 49 2 0 11 33.2 22 232 -23 28 36 5 29 2 1 28 33 11 29 4 58 -1.14 - 72 0 0 28 58 47 0 11 34.9 22 233 -24 28 45 50 29 11 48 28 42 55 29 14 45 -1.14 - 71 0 0 29 9 2 0 11 36.5 21 234 -25 28 56 3 29 22 4 28 53 7 29 25 1 -1.14 - 70 0 0 29 19 45 0 11 38.1 20 234 -26 29 6 45 29 32 48 29 3 49 29 35 46 -1.14 - 69 0 0 29 30 57 0 11 39.5 19 235 -27 29 17 55 29 44 2 29 14 59 29 46 59 -1.14 - 68 0 0 29 42 37 0 11 41.0 18 236 -28 29 29 34 29 55 44 29 26 38 29 58 42 -1.14 - 67 0 0 29 54 46 0 11 42.3 17 236 -29 29 41 41 30 7 54 29 38 45 30 10 52 -1.14 - 66 0 0 30 7 22 0 11 43.6 17 237 -29 29 54 16 30 20 32 29 51 19 30 23 31 -1.14 - 65 0 0 30 20 26 0 11 44.9 16 237 -30 30 7 19 30 33 38 30 4 21 30 36 37 -1.14 - 64 0 0 30 33 58 0 11 46.0 15 238 -31 30 20 48 30 47 11 30 17 51 30 50 10 -1.14 - 63 0 0 30 47 56 0 11 47.2 14 239 -32 30 34 45 31 1 11 30 31 47 31 4 11 -1.14 - 62 0 0 31 2 22 0 11 48.2 13 239 -33 30 49 9 31 15 38 30 46 10 31 18 39 -1.15 - 61 0 0 31 17 13 0 11 49.2 12 240 -33 31 3 58 31 30 32 31 0 59 31 33 33 -1.15 - 60 0 0 31 32 31 0 11 50.1 11 240 -34 31 19 14 31 45 51 31 16 15 31 48 53 -1.15 - 59 0 0 31 48 14 0 11 50.9 11 241 -35 31 34 56 32 1 37 31 31 56 32 4 39 -1.15 - 58 0 0 32 4 23 0 11 51.7 10 241 -36 31 51 2 32 17 48 31 48 2 32 20 50 -1.15 - 57 0 0 32 20 57 0 11 52.4 9 242 -36 32 7 34 32 34 23 32 4 33 32 37 26 -1.16 - 56 0 0 32 37 55 0 11 53.1 8 242 -37 32 24 30 32 51 24 32 21 29 32 54 27 -1.16 - 55 0 0 32 55 17 0 11 53.6 7 243 -38 32 41 50 33 8 48 32 38 48 33 11 52 -1.17 - 54 0 0 33 13 3 0 11 54.1 6 244 -39 32 59 34 33 26 36 32 56 32 33 29 40 -1.17 - 53 0 0 33 31 12 0 11 54.6 5 244 -39 33 17 41 33 44 48 33 14 38 33 47 52 -1.18 - 52 0 0 33 49 44 0 11 54.9 4 245 -40 33 36 11 34 3 22 33 33 7 34 6 27 -1.19 - 51 0 0 34 8 38 0 11 55.2 3 245 -41 33 55 3 34 22 18 33 51 59 34 25 24 -1.21 - 50 0 0 34 27 54 0 11 55.5 3 246 -41 34 14 16 34 41 37 34 11 12 34 44 43 -1.24 - 49 0 0 34 47 32 0 11 55.6 2 246 -42 34 33 51 35 1 16 34 30 46 35 4 23 -1.30 - 48 0 0 35 7 30 0 11 55.7 1 247 -42 34 53 47 35 21 17 34 50 41 35 24 24 -1.49 - 47 0 0 .. .. .... .. .. .. .. .. .. 35 14 3 .. .. .. 35 10 57 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6237-02528-1 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 12 30.8464 DE: -18 12 19.687 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 12 30.8462 DE: -18 12 19.687 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.4 * B mag [mag]: 10.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (824) Anastasia asteroid class: Barbarian approx. diameter [km]: 31 approx. diameter ["]: 0.016 distance from Earth [AU]: 2.71570 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#63 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): 0.012", 0.002", 100.066° remarks: * orbital elements for (824)Anastasia : Mean anomaly = 357.9635894373 deg Arg. of pericenter = 141.2776306216 deg Long. of node = 141.3371027792 deg Inclination = 8.1299429405 deg Eccentricity = 0.1365014688 Semimajor axis = 2.7937905621 AU Perihelion dist = 2.4124340469 AU Mag: H = 10.23, G = 0.15 Epoch of elements : MJD 60593.00682829 TDT (2024 Oct 10.0068) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#632023Apr24,0.93,2024,10,10,0.163879,0.141266,0.732876,18.659652,-3.599126,0.004941,-0.000168,-0.000001,0.000000 -123.0685,-18.2353,174.29,-6.75,False TYC 6237-02528-1,17.20856848,-18.2054686,10.73,10.44,10.28,0.0,0,,17.23243836,-18.2352830,4.93,4.64,0,0,0 824,Anastasia,15.36,31.281,2.7157,0,0,4.242,-11.65,,2.0,0 0,357.7511,2024,10,9,141.2776,141.3371,8.1299,0.13650,2.79379,2.41243,10.23,5.0,0.15 1.113,0.0120,0.0018,100,0.0018,Known errors,0.80,0,-1,-1 20241010_2528-1,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org