IOTA/IOTA-ES occultation update for (270) Anahita / UCAC4 413-057085 event on 2023 May 13, 14:04 UT Visible from Japan Summary ------- On 2023 May 13 UT, the 49.4 km diameter asteroid (270) Anahita will occult a 12.3 mag star in the constellation Virgo for observers along a path across Japan. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.84 mag to 12.46 mag (the magnitude of the asteroid) for at most 8.300 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: 100 * date and approx. time of event: 2023 May 13, 13:52 - 2023 May 13, 14:17 * geocentric midpoint of event [JD]: 2460078.08665188 * magnitude of target star: 12.29 * magnitude drop [mag]: 0.84 * estimated maximum duration [s]: 8.300 * Moon: 40 % sunlit, 141° distance * Sun: 140° distance * rough path description: Japan The occultation path -------------------- * approximate projected width [km]: 74 * 1 sigma uncertainty interval [path widths]: +/- 0.08 * 1 sigma uncertainty interval [seconds]: +/- 3.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.002", 112°) * approx speed of asteroid's shadow [km/s]: 5.9537 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 413-057085 by 270 Anahita on 2023 May 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 59 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 78 45 32 .. .. .. 78 40 54 .... 60 0 0 79 2 14 14 16 38.2 0 135 17 .. .. .. 78 34 7 .. .. .. 78 29 26 .... 61 0 0 78 50 42 14 16 38.2 0 136 17 79 19 31 78 22 15 79 24 24 78 17 31 -0.39 62 0 0 78 38 41 14 16 38.1 1 137 17 79 7 52 78 9 53 79 12 48 78 5 6 -0.68 63 0 0 78 26 10 14 16 38.0 1 138 16 78 55 42 77 57 1 79 0 42 77 52 10 -0.81 64 0 0 78 13 8 14 16 37.8 1 139 16 78 43 2 77 43 38 78 48 6 77 38 43 -0.88 65 0 0 77 59 33 14 16 37.6 2 140 16 78 29 50 77 29 41 78 34 57 77 24 43 -0.93 66 0 0 77 45 24 14 16 37.4 2 141 16 78 16 4 77 15 10 78 21 15 77 10 8 -0.96 67 0 0 77 30 39 14 16 37.0 2 142 15 78 1 43 77 0 4 78 6 58 76 54 58 -0.98 68 0 0 77 15 18 14 16 36.7 3 143 15 77 46 45 76 44 20 77 52 5 76 39 11 -1.00 69 0 0 76 59 19 14 16 36.2 3 144 15 77 31 9 76 27 58 77 36 33 76 22 46 -1.02 70 0 0 76 42 40 14 16 35.7 3 145 14 77 14 54 76 10 56 77 20 22 76 5 40 -1.03 71 0 0 76 25 19 14 16 35.0 4 145 14 76 57 57 75 53 13 77 3 29 75 47 53 -1.04 72 0 0 76 7 15 14 16 34.3 4 146 14 76 40 18 75 34 46 76 45 54 75 29 22 -1.05 73 0 0 75 48 27 14 16 33.5 4 147 13 76 21 53 75 15 35 76 27 34 75 10 7 -1.05 74 0 0 75 28 52 14 16 32.6 5 148 13 76 2 42 74 55 37 76 8 27 74 50 6 -1.06 75 0 0 75 8 29 14 16 31.6 5 149 13 75 42 43 74 34 51 75 48 32 74 29 17 -1.07 76 0 0 74 47 16 14 16 30.4 6 150 12 75 21 54 74 13 17 75 27 47 74 7 38 -1.07 77 0 0 74 25 12 14 16 29.1 6 151 12 75 0 14 73 50 51 75 6 10 73 45 9 -1.08 78 0 0 74 2 16 14 16 27.7 7 152 12 74 37 40 73 27 33 74 43 40 73 21 47 -1.08 79 0 0 73 38 24 14 16 26.0 7 153 11 74 14 11 73 3 21 74 20 15 72 57 32 -1.08 80 0 0 73 13 37 14 16 24.3 8 154 11 73 49 45 72 38 13 73 55 54 72 32 21 -1.09 81 0 0 72 47 53 14 16 22.3 8 155 10 73 24 22 72 12 10 73 30 33 72 6 14 -1.09 82 0 0 72 21 10 14 16 20.1 9 156 10 72 57 58 71 45 8 73 4 13 71 39 10 -1.09 83 0 0 71 53 27 14 16 17.7 9 157 9 72 30 34 71 17 8 72 36 53 71 11 6 -1.10 84 0 0 71 24 43 14 16 15.1 10 158 9 72 2 8 70 48 7 72 8 29 70 42 4 -1.10 85 0 0 70 54 57 14 16 12.2 10 159 8 71 32 38 70 18 7 71 39 3 70 12 0 -1.10 86 0 0 70 24 9 14 16 9.1 11 160 8 71 2 5 69 47 5 71 8 32 69 40 56 -1.11 87 0 0 69 52 18 14 16 5.7 12 161 7 70 30 27 69 15 1 70 36 56 69 8 51 -1.11 88 0 0 69 19 23 14 16 2.0 12 162 6 69 57 44 68 41 56 70 4 15 68 35 43 -1.11 89 0 0 68 45 25 14 15 57.9 13 163 6 69 23 56 68 7 48 69 30 29 68 1 35 -1.11 90 0 0 68 10 24 14 15 53.6 13 164 5 68 49 3 67 32 40 68 55 37 67 26 25 -1.11 91 0 0 67 34 20 14 15 48.8 14 165 4 68 13 5 66 56 30 68 19 40 66 50 14 -1.12 92 0 0 66 57 13 14 15 43.8 15 166 4 67 36 3 66 19 20 67 42 39 66 13 3 -1.12 93 0 0 66 19 6 14 15 38.3 16 167 3 66 57 57 65 41 10 67 4 34 65 34 53 -1.12 94 0 0 65 39 58 14 15 32.4 16 168 2 66 18 50 65 2 2 66 25 27 64 55 46 -1.12 95 0 0 64 59 52 14 15 26.2 17 169 2 65 38 42 64 21 58 65 45 19 64 15 41 -1.12 96 0 0 64 18 49 14 15 19.5 18 170 1 64 57 36 63 40 59 65 4 12 63 34 43 -1.12 97 0 0 63 36 52 14 15 12.3 19 171 0 64 15 33 62 59 6 64 22 8 62 52 51 -1.13 98 0 0 62 54 2 14 15 4.7 19 172 -1 63 32 36 62 16 23 63 39 10 62 10 10 -1.13 99 0 0 62 10 22 14 14 56.7 20 172 -2 62 48 46 61 32 52 62 55 19 61 26 40 -1.13 100 0 0 61 25 54 14 14 48.1 21 173 -2 62 4 8 60 48 35 62 10 38 60 42 24 -1.13 101 0 0 60 40 42 14 14 39.1 22 174 -3 61 18 43 60 3 35 61 25 12 59 57 26 -1.13 102 0 0 59 54 49 14 14 29.6 22 175 -4 60 32 36 59 17 55 60 39 1 59 11 48 -1.13 103 0 0 59 8 17 14 14 19.7 23 176 -5 59 45 48 58 31 37 59 52 11 58 25 33 -1.13 104 0 0 58 21 9 14 14 9.2 24 177 -6 58 58 24 57 44 46 59 4 44 57 38 44 -1.13 105 0 0 57 33 30 14 13 58.2 25 179 -7 58 10 26 56 57 23 58 16 43 56 51 24 -1.14 106 0 0 56 45 22 14 13 46.8 26 180 -8 57 21 59 56 9 33 57 28 13 56 3 37 -1.14 107 0 0 55 56 49 14 13 34.9 27 181 -9 56 33 6 55 21 19 56 39 16 55 15 26 -1.14 108 0 0 55 7 54 14 13 22.5 27 182 -10 55 43 50 54 32 43 55 49 56 54 26 54 -1.14 109 0 0 54 18 40 14 13 9.6 28 183 -11 54 54 15 53 43 50 55 0 18 53 38 4 -1.14 110 0 0 53 29 11 14 12 56.3 29 184 -12 54 4 24 52 54 42 54 10 23 52 48 59 -1.14 111 0 0 52 39 30 14 12 42.6 30 185 -13 53 14 20 52 5 22 53 20 15 51 59 42 -1.14 112 0 0 51 49 41 14 12 28.4 31 186 -14 52 24 7 51 15 54 52 29 58 51 10 18 -1.14 113 0 0 50 59 45 14 12 13.7 31 187 -15 51 33 49 50 26 20 51 39 36 50 20 48 -1.14 114 0 0 50 9 47 14 11 58.7 32 188 -16 50 43 27 49 36 44 50 49 10 49 31 15 -1.14 115 0 0 49 19 49 14 11 43.3 33 190 -17 49 53 6 48 47 9 49 58 45 48 41 43 -1.14 116 0 0 48 29 54 14 11 27.5 33 191 -18 49 2 48 47 57 36 49 8 22 47 52 14 -1.14 117 0 0 47 40 5 14 11 11.3 34 192 -19 48 12 35 47 8 9 48 18 6 47 2 51 -1.14 118 0 0 46 50 25 14 10 54.8 35 193 -20 47 22 31 46 18 51 47 27 58 46 13 36 -1.14 119 0 0 46 0 55 14 10 38.0 35 194 -21 46 32 39 45 29 43 46 38 1 45 24 32 -1.14 120 0 0 45 11 39 14 10 20.8 36 196 -22 45 42 59 44 40 48 45 48 18 44 35 41 -1.14 121 0 0 44 22 38 14 10 3.4 37 197 -23 44 53 36 43 52 9 44 58 50 43 47 5 -1.13 122 0 0 43 33 54 14 9 45.7 37 198 -24 44 4 30 43 3 47 44 9 41 42 58 46 -1.13 123 0 0 42 45 30 14 9 27.8 38 200 -25 43 15 44 42 15 44 43 20 51 42 10 47 -1.13 124 0 0 41 57 28 14 9 9.7 38 201 -26 42 27 21 41 28 2 42 32 24 41 23 8 -1.13 125 0 0 41 9 49 14 8 51.3 39 202 -27 41 39 20 40 40 43 41 44 20 40 35 53 -1.13 126 0 0 40 22 35 14 8 32.8 39 204 -28 40 51 46 39 53 49 40 56 42 39 49 2 -1.13 127 0 0 39 35 48 14 8 14.0 40 205 -29 40 4 38 39 7 22 40 9 31 39 2 38 -1.13 128 0 0 38 49 29 14 7 55.2 40 207 -30 39 17 59 38 21 22 39 22 48 38 16 41 -1.13 129 0 0 38 3 39 14 7 36.2 40 208 -31 38 31 50 37 35 50 38 36 36 37 31 13 -1.13 130 0 0 37 18 20 14 7 17.1 41 209 -32 37 46 12 36 50 50 37 50 55 36 46 15 -1.12 131 0 0 36 33 34 14 6 57.9 41 211 -33 37 1 7 36 6 21 37 5 46 36 1 49 -1.12 132 0 0 35 49 20 14 6 38.7 41 212 -34 36 16 35 35 22 24 36 21 11 35 17 55 -1.12 133 0 0 35 5 40 14 6 19.4 41 214 -35 35 32 38 34 39 2 35 37 11 34 34 35 -1.12 134 0 0 34 22 36 14 6 0.1 42 215 -36 34 49 16 33 56 14 34 53 47 33 51 50 -1.12 135 0 0 33 40 8 14 5 40.7 42 217 -37 34 6 32 33 14 2 34 10 59 33 9 41 -1.12 136 0 0 32 58 17 14 5 21.4 42 218 -38 33 24 24 32 32 27 33 28 49 32 28 8 -1.12 137 0 0 32 17 3 14 5 2.1 42 219 -38 32 42 55 31 51 29 32 47 17 31 47 13 -1.12 138 0 0 31 36 29 14 4 42.8 42 221 -39 32 2 5 31 11 9 32 6 25 31 6 55 -1.11 139 0 0 30 56 33 14 4 23.6 42 222 -40 31 21 55 30 31 27 31 26 11 30 27 16 -1.11 140 0 0 30 17 17 14 4 4.4 42 224 -41 30 42 24 29 52 26 30 46 39 29 48 17 -1.11 141 0 0 29 38 42 14 3 45.3 42 225 -42 30 3 36 29 14 4 30 7 48 29 9 58 -1.11 142 0 0 29 0 48 14 3 26.3 42 226 -42 29 25 28 28 36 23 29 29 38 28 32 19 -1.11 143 0 0 28 23 36 14 3 7.5 41 228 -43 28 48 2 27 59 24 28 52 10 27 55 21 -1.11 144 0 0 27 47 5 14 2 48.7 41 229 -44 28 11 19 27 23 5 28 15 24 27 19 5 -1.11 145 0 0 27 11 17 14 2 30.1 41 230 -44 27 35 18 26 47 29 27 39 21 26 43 31 -1.11 146 0 0 26 36 11 14 2 11.6 41 231 -45 27 0 0 26 12 35 27 4 1 26 8 39 -1.11 147 0 0 26 1 49 14 1 53.3 40 233 -46 26 25 26 25 38 24 26 29 25 25 34 29 -1.11 148 0 0 25 28 10 14 1 35.2 40 234 -46 25 51 36 25 4 56 25 55 33 25 1 3 -1.10 149 0 0 24 55 15 14 1 17.2 40 235 -47 25 18 30 24 32 11 25 22 26 24 28 21 -1.10 150 0 0 24 23 4 14 0 59.5 39 236 -47 24 46 9 24 0 11 24 50 2 23 56 21 -1.10 151 0 0 23 51 37 14 0 41.9 39 237 -48 24 14 32 23 28 54 24 18 24 23 25 6 -1.10 152 0 0 23 20 55 14 0 24.6 38 238 -48 23 43 40 22 58 22 23 47 30 22 54 36 -1.10 153 0 0 22 50 58 14 0 7.5 38 239 -49 23 13 34 22 28 33 23 17 22 22 24 49 -1.10 154 0 0 22 21 46 13 59 50.6 37 240 -49 22 44 12 21 59 30 22 47 59 21 55 47 -1.10 155 0 0 21 53 19 13 59 33.9 37 241 -49 22 15 37 21 31 12 22 19 22 21 27 30 -1.10 156 0 0 21 25 37 13 59 17.6 36 242 -50 21 47 47 21 3 38 21 51 31 20 59 58 -1.10 157 0 0 20 58 41 13 59 1.4 36 243 -50 21 20 42 20 36 50 21 24 25 20 33 11 -1.10 158 0 0 20 32 31 13 58 45.5 35 244 -50 20 54 24 20 10 48 20 58 5 20 7 10 -1.10 159 0 0 20 7 6 13 58 30.0 35 245 -50 20 28 52 19 45 30 20 32 32 19 41 54 -1.10 160 0 0 19 42 28 13 58 14.6 34 246 -51 20 4 6 19 20 59 20 7 45 19 17 23 -1.10 161 0 0 19 18 35 13 57 59.6 33 247 -51 19 40 7 18 57 13 19 43 44 18 53 39 -1.10 162 0 0 18 55 29 13 57 44.9 33 247 -51 19 16 53 18 34 13 19 20 30 18 30 40 -1.10 163 0 0 18 33 8 13 57 30.4 32 248 -51 18 54 27 18 11 59 18 58 3 18 8 27 -1.10 164 0 0 18 11 35 13 57 16.3 31 249 -51 18 32 47 17 50 31 18 36 22 17 47 0 -1.10 165 0 0 17 50 48 13 57 2.5 31 249 -51 18 11 54 17 29 50 18 15 28 17 26 20 -1.10 166 0 0 17 30 47 13 56 49.0 30 250 -51 17 51 48 17 9 55 17 55 21 17 6 25 -1.10 167 0 0 17 11 33 13 56 35.8 29 251 -51 17 32 29 16 50 46 17 36 1 16 47 17 -1.10 168 0 0 16 53 6 13 56 22.9 28 251 -51 17 13 57 16 32 24 17 17 28 16 28 56 -1.11 169 0 0 16 35 26 13 56 10.4 28 252 -50 16 56 12 16 14 48 16 59 42 16 11 21 -1.11 170 0 0 16 18 33 13 55 58.2 27 252 -50 16 39 14 15 57 59 16 42 44 15 54 33 -1.11 171 0 0 16 2 26 13 55 46.4 26 253 -50 16 23 4 15 41 57 16 26 33 15 38 32 -1.11 172 0 0 15 47 7 13 55 34.9 25 253 -50 16 7 41 15 26 42 16 11 9 15 23 17 -1.11 173 0 0 15 32 36 13 55 23.7 24 254 -49 15 53 6 15 12 14 15 56 33 15 8 50 -1.11 174 0 0 15 18 51 13 55 13.0 24 254 -49 15 39 18 14 58 33 15 42 45 14 55 9 -1.11 175 0 0 15 5 55 13 55 2.5 23 255 -49 15 26 18 14 45 39 15 29 45 14 42 16 -1.11 176 0 0 14 53 46 13 54 52.5 22 255 -48 15 14 6 14 33 33 15 17 32 14 30 10 -1.12 177 0 0 14 42 24 13 54 42.8 21 256 -48 15 2 42 14 22 14 15 6 8 14 18 52 -1.12 178 0 0 14 31 51 13 54 33.4 20 256 -47 14 52 7 14 11 43 14 55 31 14 8 21 -1.12 179 0 0 14 22 5 13 54 24.5 19 256 -47 14 42 19 14 1 59 14 45 43 13 58 38 -1.12 180 0 0 14 13 8 13 54 15.9 18 257 -46 14 33 20 13 53 4 14 36 44 13 49 43 -1.13 -179 0 0 14 4 59 13 54 7.7 18 257 -46 14 25 9 13 44 57 14 28 33 13 41 36 -1.13 -178 0 0 13 57 38 13 53 59.9 17 258 -45 14 17 47 13 37 37 14 21 11 13 34 17 -1.13 -177 0 0 13 51 7 13 53 52.5 16 258 -45 14 11 15 13 31 7 14 14 38 13 27 46 -1.13 -176 0 0 13 45 24 13 53 45.5 15 258 -44 14 5 31 13 25 24 14 8 54 13 22 4 -1.14 -175 0 0 13 40 30 13 53 38.9 14 258 -43 14 0 36 13 20 31 14 3 59 13 17 11 -1.14 -174 0 0 13 36 25 13 53 32.7 13 259 -43 13 56 31 13 16 27 13 59 54 13 13 7 -1.15 -173 0 0 13 33 10 13 53 26.9 12 259 -42 13 53 16 13 13 12 13 56 39 13 9 51 -1.15 -172 0 0 13 30 44 13 53 21.5 11 259 -41 13 50 51 13 10 46 13 54 14 13 7 26 -1.15 -171 0 0 13 29 9 13 53 16.6 10 260 -41 13 49 15 13 9 10 13 52 39 13 5 50 -1.16 -170 0 0 13 28 23 13 53 12.0 9 260 -40 13 48 31 13 8 24 13 51 54 13 5 3 -1.17 -169 0 0 13 28 28 13 53 7.9 8 260 -39 13 48 37 13 8 28 13 52 0 13 5 7 -1.17 -168 0 0 13 29 24 13 53 4.2 7 260 -38 13 49 34 13 9 22 13 52 57 13 6 1 -1.18 -167 0 0 13 31 11 13 53 1.0 7 261 -38 13 51 22 13 11 8 13 54 46 13 7 46 -1.19 -166 0 0 13 33 49 13 52 58.1 6 261 -37 13 54 2 13 13 44 13 57 26 13 10 22 -1.21 -165 0 0 13 37 19 13 52 55.8 5 261 -36 13 57 34 13 17 11 14 0 58 13 13 50 -1.23 -164 0 0 13 41 40 13 52 53.8 4 261 -35 14 1 58 13 21 31 14 5 23 13 18 9 -1.26 -163 0 0 13 46 54 13 52 52.3 3 262 -34 14 7 14 13 26 42 14 10 40 13 23 20 -1.31 -162 0 0 13 53 1 13 52 51.3 2 262 -33 14 13 24 13 32 46 14 16 50 13 29 23 -1.42 -161 0 0 14 0 0 13 52 50.8 1 262 -33 14 20 27 13 39 42 14 23 53 13 36 19 -1.82 Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: UCAC4 413-057085 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 42 26.2916 DE: -07 29 03.891 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 42 26.2916 DE: -07 29 03.891 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (270) Anahita asteroid class: approx. diameter [km]: 49 approx. diameter ["]: 0.046 distance from Earth [AU]: 1.49170 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#128 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): 0.017", 0.002", 111.956° remarks: * orbital elements for (270)Anahita : Mean anomaly = 248.3403574762 deg Arg. of pericenter = 80.6294562371 deg Long. of node = 254.2999432331 deg Inclination = 2.3671923034 deg Eccentricity = 0.1499993950 Semimajor axis = 2.1987591868 AU Perihelion dist = 1.8689466391 AU Mag: H = 8.84, G = 0.15 Epoch of elements : MJD 60077.58659722 TDT (2023 May 13.5866) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1282023Apr24,8.30,2023,5,13,14.079645,0.414628,0.616974,-2.789136,1.874395,0.003246,-0.001161,0.000001,0.000000 108.6461,-7.6134,-32.10,18.41,False UCAC4 413-057085,12.70730324,-7.4844143,0.00,12.29,0.00,0.0,0,,12.72754843,-7.6133548,0.84,0.00,0,0,0 270,Anahita,12.46,49.4,1.4917,0,0,-1.105,11.04,,2.8,0 0,248.1630,2023,5,13,80.6295,254.2999,2.3672,0.15000,2.19876,1.86895,8.86,5.0,0.15 1.084,0.0167,0.0017,112,0.0038,Known errors,-1.00,-1,-1,-1 20230513_057085,60063.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org