IOTA/IOTA-ES occultation update for (32) Pomona / TYC 6159-01149-1 event on 2023 Feb 13, 17:51 UT Visible from Japan Summary ------- On 2023 Feb 13 UT, the 80.4 km diameter asteroid (32) Pomona will occult a 11.0 mag star in the constellation Libra 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 1.53 mag to 12.26 mag (the magnitude of the asteroid) for at most 5.820 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 Feb 13, 17:46 - 2023 Feb 13, 17:57 * geocentric midpoint of event [JD]: 2459989.24460821 * magnitude of target star: 11.03 * magnitude drop [mag]: 1.53 * estimated maximum duration [s]: 5.820 * Moon: 49 % sunlit, 10° distance * Sun: 99° distance * rough path description: Japan The occultation path -------------------- * approximate projected width [km]: 119 * 1 sigma uncertainty interval [path widths]: +/- 0.03 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.001", 101°) * approx speed of asteroid's shadow [km/s]: 13.8084 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6159-01149-1 by 32 Pomona on 2023 Feb 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 112 0 0 55 32 3 17 47 3.0 0 125 -46 54 53 37 .. .. .. 54 51 38 .. .. .. .... 113 0 0 55 8 35 17 47 3.1 1 125 -46 54 30 7 55 47 37 54 28 8 55 49 40 -0.45 114 0 0 54 44 49 17 47 3.3 2 126 -46 54 6 20 55 23 53 54 4 21 55 25 56 -0.71 115 0 0 54 20 46 17 47 3.6 2 127 -47 53 42 16 54 59 52 53 40 16 55 1 54 -0.82 116 0 0 53 56 27 17 47 3.9 3 128 -47 53 17 55 54 35 33 53 15 56 54 37 36 -0.88 117 0 0 53 31 51 17 47 4.4 4 129 -47 52 53 18 54 10 58 52 51 19 54 13 1 -0.91 118 0 0 53 6 59 17 47 5.1 5 129 -47 52 28 26 53 46 6 52 26 27 53 48 9 -0.94 119 0 0 52 41 52 17 47 5.8 5 130 -47 52 3 19 53 20 59 52 1 19 53 23 3 -0.96 120 0 0 52 16 30 17 47 6.7 6 131 -47 51 37 57 52 55 38 51 35 58 52 57 41 -0.97 121 0 0 51 50 54 17 47 7.6 7 132 -47 51 12 22 52 30 1 51 10 23 52 32 4 -0.98 122 0 0 51 25 5 17 47 8.8 8 133 -47 50 46 34 52 4 12 50 44 35 52 6 15 -0.99 123 0 0 50 59 4 17 47 10.0 8 133 -47 50 20 33 51 38 9 50 18 34 51 40 12 -1.00 124 0 0 50 32 50 17 47 11.4 9 134 -47 49 54 21 51 11 54 49 52 22 51 13 56 -1.01 125 0 0 50 6 25 17 47 12.9 10 135 -47 49 27 58 50 45 27 49 25 59 50 47 30 -1.01 126 0 0 49 39 50 17 47 14.5 11 136 -46 49 1 25 50 18 50 48 59 26 50 20 52 -1.02 127 0 0 49 13 5 17 47 16.3 11 137 -46 48 34 42 49 52 2 48 32 43 49 54 5 -1.02 128 0 0 48 46 11 17 47 18.2 12 137 -46 48 7 51 49 25 6 48 5 52 49 27 8 -1.02 129 0 0 48 19 9 17 47 20.3 13 138 -46 47 40 52 48 58 1 47 38 53 49 0 3 -1.03 130 0 0 47 52 0 17 47 22.5 14 139 -46 47 13 46 48 30 48 47 11 47 48 32 50 -1.03 131 0 0 47 24 45 17 47 24.9 14 140 -45 46 46 34 48 3 29 46 44 36 48 5 31 -1.03 132 0 0 46 57 24 17 47 27.4 15 141 -45 46 19 17 47 36 5 46 17 19 47 38 6 -1.03 133 0 0 46 29 59 17 47 30.1 16 141 -45 45 51 55 47 8 35 45 49 57 47 10 36 -1.04 134 0 0 46 2 29 17 47 32.9 17 142 -45 45 24 30 46 41 2 45 22 33 46 43 3 -1.04 135 0 0 45 34 58 17 47 35.8 18 143 -44 44 57 3 46 13 25 44 55 6 46 15 26 -1.04 136 0 0 45 7 24 17 47 39.0 18 144 -44 44 29 34 45 45 47 44 27 37 45 47 48 -1.04 137 0 0 44 39 50 17 47 42.2 19 145 -44 44 2 5 45 18 8 44 0 8 45 20 8 -1.04 138 0 0 44 12 16 17 47 45.7 20 146 -43 43 34 36 44 50 28 43 32 40 44 52 29 -1.05 139 0 0 43 44 43 17 47 49.3 21 146 -43 43 7 9 44 22 50 43 5 12 44 24 50 -1.05 140 0 0 43 17 13 17 47 53.0 22 147 -42 42 39 43 43 55 14 42 37 47 43 57 13 -1.05 141 0 0 42 49 45 17 47 56.9 22 148 -42 42 12 21 43 27 40 42 10 26 43 29 39 -1.05 142 0 0 42 22 22 17 48 0.9 23 149 -41 41 45 4 43 0 10 41 43 8 43 2 9 -1.05 143 0 0 41 55 3 17 48 5.1 24 150 -41 41 17 52 42 32 46 41 15 56 42 34 45 -1.05 144 0 0 41 27 51 17 48 9.5 25 151 -40 40 50 46 42 5 28 40 48 51 42 7 26 -1.05 145 0 0 41 0 46 17 48 14.0 25 152 -40 40 23 46 41 38 16 40 21 52 41 40 14 -1.06 146 0 0 40 33 48 17 48 18.6 26 152 -39 39 56 55 41 11 11 39 55 1 41 13 9 -1.06 147 0 0 40 6 59 17 48 23.4 27 153 -38 39 30 13 40 44 16 39 28 19 40 46 13 -1.06 148 0 0 39 40 21 17 48 28.3 28 154 -38 39 3 41 40 17 30 39 1 47 40 19 27 -1.06 149 0 0 39 13 53 17 48 33.4 28 155 -37 38 37 19 39 50 56 38 35 26 39 52 52 -1.06 150 0 0 38 47 37 17 48 38.6 29 156 -36 38 11 10 39 24 32 38 9 17 39 26 29 -1.06 151 0 0 38 21 33 17 48 43.9 30 157 -36 37 45 13 38 58 22 37 43 21 39 0 18 -1.06 152 0 0 37 55 43 17 48 49.4 31 158 -35 37 19 30 38 32 25 37 17 38 38 34 20 -1.06 153 0 0 37 30 8 17 48 55.0 31 159 -34 36 54 2 38 6 42 36 52 10 38 8 37 -1.07 154 0 0 37 4 48 17 49 0.8 32 160 -34 36 28 49 37 41 15 36 26 57 37 43 10 -1.07 155 0 0 36 39 44 17 49 6.6 33 161 -33 36 3 52 37 16 4 36 2 0 37 17 58 -1.07 156 0 0 36 14 57 17 49 12.6 33 162 -32 35 39 12 36 51 10 35 37 21 36 53 3 -1.07 157 0 0 35 50 28 17 49 18.7 34 163 -31 35 14 49 36 26 33 35 12 59 36 28 27 -1.07 158 0 0 35 26 17 17 49 25.0 35 164 -30 34 50 46 36 2 16 34 48 56 36 4 9 -1.07 159 0 0 35 2 26 17 49 31.3 35 165 -30 34 27 2 35 38 17 34 25 12 35 40 10 -1.07 160 0 0 34 38 56 17 49 37.7 36 166 -29 34 3 38 35 14 39 34 1 49 35 16 32 -1.07 161 0 0 34 15 46 17 49 44.2 36 167 -28 33 40 35 34 51 22 33 38 46 34 53 14 -1.07 162 0 0 33 52 57 17 49 50.9 37 169 -27 33 17 54 34 28 27 33 16 5 34 30 18 -1.07 163 0 0 33 30 32 17 49 57.6 37 170 -26 32 55 35 34 5 54 32 53 46 34 7 45 -1.08 164 0 0 33 8 29 17 50 4.4 38 171 -26 32 33 38 33 43 44 32 31 50 33 45 35 -1.08 165 0 0 32 46 49 17 50 11.3 38 172 -25 32 12 6 33 21 58 32 10 18 33 23 48 -1.08 166 0 0 32 25 35 17 50 18.3 39 173 -24 31 50 58 33 0 36 31 49 10 33 2 26 -1.08 167 0 0 32 4 45 17 50 25.3 39 175 -23 31 30 14 32 39 40 31 28 27 32 41 29 -1.08 168 0 0 31 44 20 17 50 32.4 40 176 -22 31 9 56 32 19 8 31 8 10 32 20 58 -1.08 169 0 0 31 24 22 17 50 39.6 40 177 -21 30 50 4 31 59 4 30 48 18 32 0 52 -1.08 170 0 0 31 4 50 17 50 46.9 40 178 -20 30 30 39 31 39 25 30 28 53 31 41 14 -1.08 171 0 0 30 45 46 17 50 54.2 41 180 -19 30 11 40 31 20 14 30 9 55 31 22 3 -1.08 172 0 0 30 27 9 17 51 1.5 41 181 -18 29 53 9 31 1 31 29 51 24 31 3 19 -1.08 173 0 0 30 9 0 17 51 8.9 41 182 -17 29 35 7 30 43 16 29 33 21 30 45 4 -1.08 174 0 0 29 51 20 17 51 16.3 42 184 -17 29 17 32 30 25 30 29 15 47 30 27 17 -1.09 175 0 0 29 34 8 17 51 23.8 42 185 -16 29 0 27 30 8 13 28 58 42 30 10 0 -1.09 176 0 0 29 17 27 17 51 31.3 42 186 -15 28 43 50 29 51 26 28 42 6 29 53 12 -1.09 177 0 0 29 1 15 17 51 38.8 42 188 -14 28 27 44 29 35 8 28 26 0 29 36 55 -1.09 178 0 0 28 45 33 17 51 46.4 42 189 -13 28 12 7 29 19 21 28 10 24 29 21 7 -1.09 179 0 0 28 30 22 17 51 53.9 42 190 -12 27 57 1 29 4 5 27 55 18 29 5 50 -1.09 180 0 0 28 15 42 17 52 1.5 42 192 -11 27 42 26 28 49 19 27 40 43 28 51 5 -1.09 -179 0 0 28 1 33 17 52 9.1 43 193 -10 27 28 22 28 35 5 27 26 39 28 36 50 -1.09 -178 0 0 27 47 55 17 52 16.6 43 194 -9 27 14 49 28 21 23 27 13 6 28 23 8 -1.09 -177 0 0 27 34 49 17 52 24.2 42 196 -8 27 1 48 28 8 13 27 0 5 28 9 57 -1.09 -176 0 0 27 22 16 17 52 31.8 42 197 -7 26 49 18 27 55 34 26 47 36 27 57 19 -1.09 -175 0 0 27 10 14 17 52 39.3 42 198 -6 26 37 21 27 43 29 26 35 39 27 45 13 -1.09 -174 0 0 26 58 46 17 52 46.9 42 200 -5 26 25 56 27 31 56 26 24 14 27 33 40 -1.09 -173 0 0 26 47 49 17 52 54.4 42 201 -4 26 15 4 27 20 56 26 13 22 27 22 40 -1.09 -172 0 0 26 37 26 17 53 1.9 42 202 -3 26 4 44 27 10 29 26 3 3 27 12 13 -1.09 -171 0 0 26 27 36 17 53 9.3 42 203 -3 25 54 58 27 0 35 25 53 16 27 2 19 -1.09 -170 0 0 26 18 19 17 53 16.7 41 205 -2 25 45 44 26 51 15 25 44 3 26 52 58 -1.10 -169 0 0 26 9 36 17 53 24.1 41 206 -1 25 37 4 26 42 28 25 35 23 26 44 12 -1.10 -168 0 0 26 1 26 17 53 31.4 41 207 0 25 28 57 26 34 16 25 27 16 26 35 59 -1.10 -167 0 0 25 53 50 17 53 38.7 41 208 1 25 21 24 26 26 37 25 19 43 26 28 20 -1.10 -166 0 0 25 46 48 17 53 46.0 40 210 2 25 14 24 26 19 32 25 12 44 26 21 14 -1.10 -165 0 0 25 40 19 17 53 53.1 40 211 3 25 7 58 26 13 1 25 6 18 26 14 43 -1.10 -164 0 0 25 34 25 17 54 0.3 39 212 4 25 2 6 26 7 4 25 0 26 26 8 47 -1.10 -163 0 0 25 29 5 17 54 7.3 39 213 5 24 56 48 26 1 42 24 55 7 26 3 24 -1.10 -162 0 0 25 24 18 17 54 14.3 39 214 6 24 52 3 25 56 54 24 50 23 25 58 36 -1.10 -161 0 0 25 20 6 17 54 21.2 38 215 7 24 47 53 25 52 40 24 46 13 25 54 22 -1.10 -160 0 0 25 16 29 17 54 28.0 38 216 8 24 44 16 25 49 1 24 42 37 25 50 43 -1.10 -159 0 0 25 13 25 17 54 34.8 37 217 8 24 41 14 25 45 56 24 39 34 25 47 38 -1.10 -158 0 0 25 10 56 17 54 41.4 37 218 9 24 38 46 25 43 25 24 37 6 25 45 7 -1.10 -157 0 0 25 9 0 17 54 48.0 36 219 10 24 36 52 25 41 29 24 35 12 25 43 11 -1.10 -156 0 0 25 7 40 17 54 54.5 35 220 11 24 35 31 25 40 8 24 33 52 25 41 49 -1.10 -155 0 0 25 6 53 17 55 0.9 35 221 12 24 34 45 25 39 20 24 33 5 25 41 2 -1.10 -154 0 0 25 6 40 17 55 7.2 34 222 13 24 34 33 25 39 8 24 32 53 25 40 49 -1.10 -153 0 0 25 7 2 17 55 13.3 34 223 14 24 34 55 25 39 29 24 33 15 25 41 11 -1.10 -152 0 0 25 7 58 17 55 19.4 33 224 15 24 35 51 25 40 25 24 34 11 25 42 7 -1.10 -151 0 0 25 9 28 17 55 25.4 32 225 15 24 37 20 25 41 55 24 35 40 25 43 37 -1.10 -150 0 0 25 11 31 17 55 31.2 32 226 16 24 39 23 25 43 59 24 37 44 25 45 41 -1.10 -149 0 0 25 14 9 17 55 37.0 31 226 17 24 42 1 25 46 38 24 40 21 25 48 20 -1.10 -148 0 0 25 17 21 17 55 42.6 30 227 18 24 45 11 25 49 50 24 43 31 25 51 32 -1.10 -147 0 0 25 21 6 17 55 48.1 29 228 19 24 48 55 25 53 36 24 47 15 25 55 18 -1.10 -146 0 0 25 25 25 17 55 53.5 29 229 20 24 53 13 25 57 56 24 51 33 25 59 38 -1.10 -145 0 0 25 30 17 17 55 58.7 28 229 20 24 58 4 26 2 50 24 56 24 26 4 32 -1.10 -144 0 0 25 35 42 17 56 3.9 27 230 21 25 3 28 26 8 17 25 1 48 26 9 59 -1.10 -143 0 0 25 41 41 17 56 8.8 26 231 22 25 9 25 26 14 17 25 7 45 26 16 0 -1.10 -142 0 0 25 48 13 17 56 13.7 26 231 23 25 15 55 26 20 51 25 14 14 26 22 34 -1.10 -141 0 0 25 55 18 17 56 18.4 25 232 23 25 22 57 26 27 58 25 21 17 26 29 41 -1.10 -140 0 0 26 2 55 17 56 23.0 24 233 24 25 30 33 26 35 38 25 28 52 26 37 21 -1.10 -139 0 0 26 11 5 17 56 27.4 23 233 25 25 38 40 26 43 50 25 36 59 26 45 33 -1.10 -138 0 0 26 19 47 17 56 31.7 22 234 26 25 47 20 26 52 35 25 45 39 26 54 18 -1.10 -137 0 0 26 29 2 17 56 35.8 22 235 26 25 56 31 27 1 53 25 54 51 27 3 36 -1.10 -136 0 0 26 38 48 17 56 39.8 21 235 27 26 6 15 27 11 42 26 4 34 27 13 25 -1.10 -135 0 0 26 49 6 17 56 43.6 20 236 28 26 16 30 27 22 3 26 14 48 27 23 47 -1.10 -134 0 0 26 59 56 17 56 47.3 19 236 28 26 27 16 27 32 56 26 25 35 27 34 40 -1.10 -133 0 0 27 11 16 17 56 50.8 18 237 29 26 38 33 27 44 21 26 36 52 27 46 4 -1.10 -132 0 0 27 23 8 17 56 54.2 17 238 30 26 50 21 27 56 16 26 48 39 27 58 0 -1.10 -131 0 0 27 35 30 17 56 57.4 16 238 30 27 2 40 28 8 42 27 0 58 28 10 26 -1.10 -130 0 0 27 48 23 17 57 0.4 16 239 31 27 15 28 28 21 39 27 13 46 28 23 23 -1.10 -129 0 0 28 1 46 17 57 3.3 15 239 31 27 28 47 28 35 6 27 27 4 28 36 50 -1.10 -128 0 0 28 15 38 17 57 6.0 14 240 32 27 42 35 28 49 3 27 40 52 28 50 47 -1.10 -127 0 0 28 30 0 17 57 8.5 13 240 32 27 56 52 29 3 29 27 55 10 29 5 14 -1.11 -126 0 0 28 44 51 17 57 10.9 12 241 33 28 11 39 29 18 25 28 9 56 29 20 10 -1.11 -125 0 0 29 0 10 17 57 13.1 11 241 33 28 26 54 29 33 49 28 25 10 29 35 35 -1.11 -124 0 0 29 15 58 17 57 15.1 10 242 34 28 42 37 29 49 42 28 40 53 29 51 28 -1.11 -123 0 0 29 32 14 17 57 17.0 9 242 34 28 58 47 30 6 3 28 57 4 30 7 49 -1.11 -122 0 0 29 48 57 17 57 18.6 8 243 35 29 15 26 30 22 51 29 13 42 30 24 38 -1.12 -121 0 0 30 6 8 17 57 20.2 8 243 35 29 32 31 30 40 7 29 30 47 30 41 54 -1.12 -120 0 0 30 23 45 17 57 21.5 7 244 35 29 50 3 30 57 50 29 48 18 30 59 37 -1.13 -119 0 0 30 41 48 17 57 22.7 6 244 36 30 8 1 31 15 59 30 6 16 31 17 46 -1.13 -118 0 0 31 0 18 17 57 23.7 5 245 36 30 26 24 31 34 34 30 24 39 31 36 22 -1.14 -117 0 0 31 19 12 17 57 24.5 4 246 36 30 45 13 31 53 34 30 43 28 31 55 22 -1.16 -116 0 0 31 38 31 17 57 25.1 3 246 37 31 4 27 32 13 0 31 2 41 32 14 48 -1.18 -115 0 0 31 58 15 17 57 25.6 2 247 37 31 24 4 32 32 50 31 22 18 32 34 38 -1.23 -114 0 0 32 18 22 17 57 25.9 1 247 37 31 44 6 32 53 3 31 42 19 32 54 52 -1.34 -113 0 0 32 38 53 17 57 26.0 0 248 37 32 4 30 33 13 40 32 2 44 33 15 29 -2.34 Uncertainty in time = +/- 2 secs Prediction of 2022 Dec 13.0 Data for the target star ------------------------ * name: TYC 6159-01149-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 48 53.0763 DE: -18 30 00.410 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 48 53.0764 DE: -18 30 00.410 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (32) Pomona asteroid class: approx. diameter [km]: 80 approx. diameter ["]: 0.055 distance from Earth [AU]: 2.01160 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#127 date of fit: 2022 Nov 25 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): 0.015", 0.001", 101.336° remarks: * orbital elements for (32)Pomona : Mean anomaly = 1.8552578917 deg Arg. of pericenter = 338.4809112678 deg Long. of node = 220.3634182385 deg Inclination = 5.5217325092 deg Eccentricity = 0.0816931992 Semimajor axis = 2.5879129312 AU Perihelion dist = 2.3764980446 AU Mag: H = 7.73, G = 0.15 Epoch of elements : MJD 59988.74437500 TDT (2023 Feb 13.7444) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1272022Nov25,5.82,2023,2,13,17.870597,0.164120,0.717657,7.598262,-1.735166,-0.005412,0.001696,0.000000,0.000000 170.9796,-18.5958,-84.52,-13.27,False TYC 6159-01149-1,14.81474340,-18.5001138,0.00,11.03,0.00,0.0,0,,14.83628438,-18.5958497,1.53,0.00,0,0,0 32,Pomona,12.26,80.4,2.0116,0,0,2.337,-7.58,,3.8,0 0,1.6790,2023,2,13,338.4809,220.3634,5.5217,0.08169,2.58791,2.37650,7.73,5.0,0.15 1.026,0.0150,0.0014,101,0.0014,Known errors,-1.00,-1,-1,-1 20230213_1149-1,59926.02 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 13, 00:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org