IOTA/IOTA-ES occultation update for (10) Hygiea / TYC 5782-01296-1 event on 2023 Oct 29, 09:36 UT Visible from Japan, China Summary ------- On 2023 Oct 29 UT, the 419.9 km diameter asteroid (10) Hygiea will occult a 12.2 mag star in the constellation Aquarius for observers along a path across Japan, China. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.38 mag to 11.29 mag (the magnitude of the asteroid) for at most 33.080 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 Oct 29, 09:30 - 2023 Oct 29, 09:41 * geocentric midpoint of event [JD]: 2460246.90009479 * magnitude of target star: 12.22 * magnitude drop [mag]: 0.38 * estimated maximum duration [s]: 33.080 * Moon: 100 % sunlit, 88° distance * Sun: 98° distance * rough path description: Japan, China The occultation path -------------------- * approximate projected width [km]: 748 * 1 sigma uncertainty interval [path widths]: +/- 0.01 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.006, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.006", 0.003", 70°) * approx speed of asteroid's shadow [km/s]: 12.6925 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5782-01296-1 by 10 Hygiea on 2023 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 0 0 0 .. .. .... .. .. .. .. .. .. 37 56 11 .. .. .. 37 51 8 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 37 41 28 .. .. .. 37 36 26 .. .. .. .... 58 0 0 40 50 23 9 31 27.4 1 109 31 37 27 8 .. .. .. 37 22 7 .. .. .. .... 59 0 0 40 35 57 9 31 27.6 2 109 31 37 13 12 44 19 13 37 8 11 44 25 19 -0.97 60 0 0 40 21 56 9 31 28.1 2 110 31 36 59 40 44 4 32 36 54 40 44 10 37 -1.14 61 0 0 40 8 19 9 31 28.6 3 111 31 36 46 31 43 50 18 36 41 32 43 56 21 -1.23 62 0 0 39 55 7 9 31 29.4 4 111 30 36 33 47 43 36 30 36 28 48 43 42 32 -1.28 63 0 0 39 42 22 9 31 30.3 5 112 30 36 21 27 43 23 9 36 16 29 43 29 10 -1.31 64 0 0 39 30 2 9 31 31.4 5 113 30 36 9 33 43 10 15 36 4 35 43 16 15 -1.34 65 0 0 39 18 8 9 31 32.7 6 113 30 35 58 3 42 57 49 35 53 6 43 3 48 -1.35 66 0 0 39 6 42 9 31 34.2 7 114 29 35 47 0 42 45 51 35 42 3 42 51 50 -1.37 67 0 0 38 55 42 9 31 35.8 8 115 29 35 36 22 42 34 22 35 31 26 42 40 19 -1.38 68 0 0 38 45 9 9 31 37.6 9 115 29 35 26 11 42 23 21 35 21 16 42 29 17 -1.39 69 0 0 38 35 4 9 31 39.6 9 116 28 35 16 27 42 12 49 35 11 32 42 18 44 -1.40 70 0 0 38 25 27 9 31 41.7 10 117 28 35 7 9 42 2 46 35 2 15 42 8 41 -1.41 71 0 0 38 16 18 9 31 44.1 11 117 27 34 58 19 41 53 12 34 53 24 41 59 6 -1.41 72 0 0 38 7 37 9 31 46.6 12 118 27 34 49 55 41 44 9 34 45 2 41 50 3 -1.42 73 0 0 37 59 26 9 31 49.2 13 119 26 34 42 0 41 35 36 34 37 6 41 41 29 -1.42 74 0 0 37 51 43 9 31 52.0 13 119 26 34 34 32 41 27 33 34 29 39 41 33 25 -1.43 75 0 0 37 44 29 9 31 55.0 14 120 26 34 27 32 41 20 0 34 22 39 41 25 52 -1.43 76 0 0 37 37 44 9 31 58.2 15 121 25 34 21 0 41 12 58 34 16 7 41 18 50 -1.43 77 0 0 37 31 30 9 32 1.5 16 121 24 34 14 57 41 6 28 34 10 4 41 12 18 -1.44 78 0 0 37 25 45 9 32 5.0 16 122 24 34 9 22 41 0 28 34 4 30 41 6 18 -1.44 79 0 0 37 20 29 9 32 8.7 17 123 23 34 4 16 40 55 0 33 59 25 41 0 50 -1.44 80 0 0 37 15 44 9 32 12.5 18 124 23 33 59 40 40 50 4 33 54 48 40 55 54 -1.45 81 0 0 37 11 29 9 32 16.4 18 124 22 33 55 32 40 45 39 33 50 41 40 51 29 -1.45 82 0 0 37 7 44 9 32 20.5 19 125 22 33 51 53 40 41 46 33 47 2 40 47 35 -1.45 83 0 0 37 4 30 9 32 24.8 20 126 21 33 48 44 40 38 25 33 43 53 40 44 14 -1.45 84 0 0 37 1 46 9 32 29.2 21 127 20 33 46 5 40 35 36 33 41 14 40 41 25 -1.45 85 0 0 36 59 33 9 32 33.8 21 127 20 33 43 55 40 33 19 33 39 4 40 39 8 -1.46 86 0 0 36 57 50 9 32 38.5 22 128 19 33 42 14 40 31 35 33 37 23 40 37 23 -1.46 87 0 0 36 56 39 9 32 43.3 23 129 18 33 41 4 40 30 22 33 36 13 40 36 11 -1.46 88 0 0 36 55 59 9 32 48.3 23 130 18 33 40 23 40 29 43 33 35 32 40 35 31 -1.46 89 0 0 36 55 50 9 32 53.4 24 131 17 33 40 12 40 29 36 33 35 21 40 35 24 -1.46 90 0 0 36 56 12 9 32 58.6 24 131 16 33 40 31 40 30 1 33 35 40 40 35 50 -1.46 91 0 0 36 57 5 9 33 4.0 25 132 16 33 41 20 40 30 59 33 36 29 40 36 48 -1.47 92 0 0 36 58 29 9 33 9.4 26 133 15 33 42 39 40 32 30 33 37 48 40 38 19 -1.47 93 0 0 37 0 25 9 33 15.0 26 134 14 33 44 28 40 34 33 33 39 37 40 40 22 -1.47 94 0 0 37 2 52 9 33 20.8 27 135 13 33 46 48 40 37 9 33 41 56 40 42 59 -1.47 95 0 0 37 5 49 9 33 26.6 27 136 13 33 49 37 40 40 18 33 44 45 40 46 8 -1.47 96 0 0 37 9 18 9 33 32.5 28 137 12 33 52 56 40 43 59 33 48 4 40 49 50 -1.47 97 0 0 37 13 18 9 33 38.6 28 138 11 33 56 45 40 48 13 33 51 53 40 54 4 -1.47 98 0 0 37 17 49 9 33 44.7 29 139 10 34 1 4 40 53 0 33 56 12 40 58 51 -1.47 99 0 0 37 22 51 9 33 51.0 29 140 10 34 5 53 40 58 19 34 1 1 41 4 11 -1.48 100 0 0 37 28 24 9 33 57.3 30 141 9 34 11 12 41 4 11 34 6 19 41 10 3 -1.48 101 0 0 37 34 28 9 34 3.7 30 142 8 34 17 1 41 10 35 34 12 7 41 16 28 -1.48 102 0 0 37 41 3 9 34 10.2 30 143 7 34 23 19 41 17 31 34 18 25 41 23 25 -1.48 103 0 0 37 48 9 9 34 16.8 31 144 7 34 30 7 41 25 0 34 25 13 41 30 54 -1.48 104 0 0 37 55 45 9 34 23.5 31 145 6 34 37 24 41 33 0 34 32 30 41 38 55 -1.48 105 0 0 38 3 51 9 34 30.2 32 146 5 34 45 11 41 41 32 34 40 16 41 47 28 -1.48 106 0 0 38 12 27 9 34 37.0 32 147 4 34 53 27 41 50 36 34 48 31 41 56 32 -1.48 107 0 0 38 21 34 9 34 43.8 32 148 3 35 2 12 42 0 11 34 57 15 42 6 9 -1.48 108 0 0 38 31 10 9 34 50.8 33 149 2 35 11 25 42 10 18 35 6 28 42 16 16 -1.48 109 0 0 38 41 16 9 34 57.7 33 151 2 35 21 7 42 20 56 35 16 10 42 26 55 -1.48 110 0 0 38 51 52 9 35 4.7 33 152 1 35 31 18 42 32 4 35 26 20 42 38 4 -1.48 111 0 0 39 2 56 9 35 11.8 33 153 0 35 41 56 42 43 43 35 36 58 42 49 45 -1.48 112 0 0 39 14 30 9 35 18.9 33 154 -1 35 53 3 42 55 53 35 48 4 43 1 55 -1.48 113 0 0 39 26 32 9 35 26.0 34 155 -2 36 4 37 43 8 32 35 59 37 43 14 36 -1.48 114 0 0 39 39 3 9 35 33.1 34 156 -2 36 16 39 43 21 42 36 11 38 43 27 46 -1.48 115 0 0 39 52 2 9 35 40.3 34 158 -3 36 29 7 43 35 20 36 24 6 43 41 26 -1.48 116 0 0 40 5 28 9 35 47.5 34 159 -4 36 42 3 43 49 28 36 37 1 43 55 35 -1.48 117 0 0 40 19 22 9 35 54.7 34 160 -5 36 55 25 44 4 5 36 50 23 44 10 13 -1.48 118 0 0 40 33 43 9 36 1.8 34 161 -6 37 9 13 44 19 9 37 4 10 44 25 19 -1.48 119 0 0 40 48 31 9 36 9.0 34 163 -7 37 23 27 44 34 42 37 18 24 44 40 53 -1.48 120 0 0 41 3 45 9 36 16.2 34 164 -7 37 38 7 44 50 42 37 33 2 44 56 55 -1.48 121 0 0 41 19 25 9 36 23.4 34 165 -8 37 53 11 45 7 10 37 48 6 45 13 24 -1.48 122 0 0 41 35 30 9 36 30.5 34 166 -9 38 8 40 45 24 3 38 3 34 45 30 19 -1.48 123 0 0 41 52 0 9 36 37.7 34 167 -10 38 24 34 45 41 23 38 19 27 45 47 40 -1.48 124 0 0 42 8 55 9 36 44.8 34 169 -11 38 40 51 45 59 9 38 35 43 46 5 28 -1.48 125 0 0 42 26 13 9 36 51.9 33 170 -11 38 57 31 46 17 19 38 52 22 46 23 40 -1.48 126 0 0 42 43 55 9 36 58.9 33 171 -12 39 14 34 46 35 54 39 9 25 46 42 16 -1.48 127 0 0 43 2 0 9 37 5.9 33 172 -13 39 32 0 46 54 53 39 26 49 47 1 17 -1.48 128 0 0 43 20 27 9 37 12.8 33 174 -14 39 49 47 47 14 15 39 44 36 47 20 40 -1.48 129 0 0 43 39 16 9 37 19.7 33 175 -14 40 7 56 47 34 0 40 2 43 47 40 27 -1.48 130 0 0 43 58 27 9 37 26.6 32 176 -15 40 26 25 47 54 7 40 21 12 48 0 35 -1.48 131 0 0 44 17 57 9 37 33.3 32 177 -16 40 45 14 48 14 35 40 40 0 48 21 5 -1.48 132 0 0 44 37 48 9 37 40.0 32 178 -17 41 4 23 48 35 24 40 59 8 48 41 56 -1.48 133 0 0 44 57 58 9 37 46.6 32 180 -18 41 23 51 48 56 32 41 18 35 49 3 6 -1.48 134 0 0 45 18 27 9 37 53.2 31 181 -18 41 43 37 49 18 0 41 38 20 49 24 36 -1.48 135 0 0 45 39 13 9 37 59.7 31 182 -19 42 3 40 49 39 46 41 58 22 49 46 24 -1.48 136 0 0 46 0 17 9 38 6.0 30 183 -20 42 24 1 50 1 50 42 18 42 50 8 30 -1.48 137 0 0 46 21 37 9 38 12.3 30 184 -20 42 44 38 50 24 11 42 39 18 50 30 53 -1.48 138 0 0 46 43 13 9 38 18.5 30 185 -21 43 5 31 50 46 48 43 0 10 50 53 32 -1.48 139 0 0 47 5 4 9 38 24.6 29 186 -22 43 26 38 51 9 40 43 21 16 51 16 26 -1.48 140 0 0 47 27 9 9 38 30.6 29 188 -22 43 48 0 51 32 47 43 42 37 51 39 34 -1.48 141 0 0 47 49 27 9 38 36.5 28 189 -23 44 9 35 51 56 7 44 4 11 52 2 56 -1.48 142 0 0 48 11 58 9 38 42.2 28 190 -24 44 31 23 52 19 39 44 25 58 52 26 31 -1.48 143 0 0 48 34 41 9 38 47.9 27 191 -24 44 53 23 52 43 23 44 47 57 52 50 17 -1.48 144 0 0 48 57 35 9 38 53.4 27 192 -25 45 15 34 53 7 18 45 10 7 53 14 14 -1.48 145 0 0 49 20 39 9 38 58.8 26 193 -26 45 37 55 53 31 23 45 32 28 53 38 20 -1.48 146 0 0 49 43 52 9 39 4.1 26 194 -26 46 0 27 53 55 37 45 54 58 54 2 36 -1.48 147 0 0 50 7 13 9 39 9.3 25 195 -27 46 23 7 54 19 58 46 17 38 54 26 59 -1.48 148 0 0 50 30 42 9 39 14.3 25 196 -27 46 45 55 54 44 26 46 40 25 54 51 30 -1.48 149 0 0 50 54 18 9 39 19.2 24 197 -28 47 8 51 55 9 1 47 3 19 55 16 6 -1.48 150 0 0 51 17 59 9 39 24.0 24 198 -28 47 31 52 55 33 40 47 26 20 55 40 47 -1.48 151 0 0 51 41 45 9 39 28.6 23 199 -29 47 55 0 55 58 23 47 49 27 56 5 32 -1.48 152 0 0 52 5 36 9 39 33.1 22 200 -29 48 18 12 56 23 10 48 12 39 56 30 21 -1.48 153 0 0 52 29 29 9 39 37.4 22 201 -30 48 41 29 56 47 58 48 35 54 56 55 11 -1.48 154 0 0 52 53 25 9 39 41.6 21 202 -30 49 4 48 57 12 48 48 59 13 57 20 2 -1.48 155 0 0 53 17 22 9 39 45.7 21 203 -31 49 28 10 57 37 37 49 22 34 57 44 53 -1.48 156 0 0 53 41 19 9 39 49.7 20 204 -31 49 51 34 58 2 26 49 45 57 58 9 43 -1.48 157 0 0 54 5 16 9 39 53.4 19 205 -32 50 14 59 58 27 12 50 9 21 58 34 31 -1.48 158 0 0 54 29 12 9 39 57.1 19 206 -32 50 38 23 58 51 56 50 32 45 58 59 17 -1.48 159 0 0 54 53 6 9 40 0.6 18 207 -32 51 1 48 59 16 36 50 56 9 59 23 58 -1.48 160 0 0 55 16 57 9 40 4.0 17 208 -33 51 25 10 59 41 10 51 19 31 59 48 34 -1.48 161 0 0 55 40 44 9 40 7.2 17 209 -33 51 48 30 60 5 39 51 42 50 60 13 5 -1.48 162 0 0 56 4 27 9 40 10.3 16 210 -33 52 11 46 60 30 2 52 6 6 60 37 28 -1.48 163 0 0 56 28 4 9 40 13.3 16 211 -34 52 34 59 60 54 17 52 29 18 61 1 44 -1.48 164 0 0 56 51 35 9 40 16.1 15 212 -34 52 58 7 61 18 23 52 52 26 61 25 52 -1.48 165 0 0 57 14 59 9 40 18.7 14 212 -34 53 21 10 61 42 20 53 15 28 61 49 50 -1.49 166 0 0 57 38 16 9 40 21.3 14 213 -34 53 44 7 62 6 6 53 38 25 62 13 38 -1.49 167 0 0 58 1 24 9 40 23.7 13 214 -35 54 6 57 62 29 42 54 1 14 62 37 14 -1.49 168 0 0 58 24 22 9 40 26.0 13 215 -35 54 29 40 62 53 6 54 23 57 63 0 39 -1.49 169 0 0 58 47 11 9 40 28.1 12 216 -35 54 52 14 63 16 17 54 46 31 63 23 51 -1.49 170 0 0 59 9 49 9 40 30.1 11 217 -35 55 14 40 63 39 15 55 8 57 63 46 49 -1.49 171 0 0 59 32 16 9 40 32.0 11 218 -35 55 36 57 64 1 59 55 31 13 64 9 34 -1.49 172 0 0 59 54 31 9 40 33.8 10 219 -36 55 59 4 64 24 28 55 53 20 64 32 4 -1.49 173 0 0 60 16 34 9 40 35.4 9 220 -36 56 21 0 64 46 42 56 15 16 64 54 18 -1.49 174 0 0 60 38 24 9 40 37.0 9 221 -36 56 42 45 65 8 40 56 37 1 65 16 16 -1.49 175 0 0 61 0 0 9 40 38.4 8 221 -36 57 4 19 65 30 21 56 58 35 65 37 58 -1.49 176 0 0 61 21 22 9 40 39.7 8 222 -36 57 25 41 65 51 46 57 19 56 65 59 22 -1.50 177 0 0 61 42 30 9 40 40.9 7 223 -36 57 46 50 66 12 53 57 41 5 66 20 29 -1.50 178 0 0 62 3 22 9 40 41.9 7 224 -36 58 7 46 66 33 42 58 2 1 66 41 18 -1.50 178 59 59 62 23 59 9 40 42.9 6 225 -36 58 28 28 66 54 12 58 22 44 67 1 48 -1.50 179 59 59 62 44 21 9 40 43.8 5 226 -36 58 48 57 67 14 24 58 43 13 67 22 0 -1.50 -179 0 1 63 4 26 9 40 44.6 5 227 -36 59 9 11 67 34 17 59 3 27 67 41 52 -1.51 -178 0 1 63 24 15 9 40 45.3 4 228 -36 59 29 11 67 53 50 59 23 27 68 1 25 -1.51 -177 0 1 63 43 47 9 40 45.8 4 229 -36 59 48 55 68 13 4 59 43 12 68 20 38 -1.52 -176 0 1 64 3 2 9 40 46.3 3 230 -36 60 8 25 68 31 57 60 2 42 68 39 31 -1.52 -175 0 1 64 21 59 9 40 46.8 3 230 -36 60 27 39 .. .. .. 60 21 56 .. .. .. -1.53 -174 0 1 64 40 39 9 40 47.1 2 231 -36 60 46 37 .. .. .. 60 40 55 .. .. .. -1.55 -173 0 1 64 59 1 9 40 47.3 2 232 -36 61 5 19 .. .. .. 60 59 37 .. .. .. -1.57 -172 0 1 65 17 5 9 40 47.5 1 233 -36 61 23 45 .. .. .. 61 18 4 .. .. .. -1.62 -171 0 1 65 34 51 9 40 47.6 1 234 -36 61 41 54 .. .. .. 61 36 13 .. .. .. -1.76 -170 0 1 65 52 18 9 40 47.6 0 235 -36 61 59 46 .. .. .. 61 54 6 .. .. .. -11.52 0 0 0 .. .. .... .. .. .. .. .. .. 62 17 22 .. .. .. 62 11 43 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 62 34 41 .. .. .. 62 29 2 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 62 51 43 .. .. .. 62 46 4 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 63 8 27 .. .. .. 63 2 50 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 5782-01296-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 59 52.8549 DE: -13 44 37.105 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 59 52.8548 DE: -13 44 37.105 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (10) Hygiea asteroid class: ShapeModel approx. diameter [km]: 420 approx. diameter ["]: 0.204 distance from Earth [AU]: 2.84120 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#115 date of fit: 2023 Oct 11 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): 0.006", 0.003", 69.876° remarks: * orbital elements for (10)Hygiea : Mean anomaly = 83.4075900174 deg Arg. of pericenter = 312.4776456687 deg Long. of node = 283.1733838004 deg Inclination = 3.8318128713 deg Eccentricity = 0.1109875105 Semimajor axis = 3.1398858641 AU Perihelion dist = 2.7913977489 AU Mag: H = 5.64, G = 0.15 Epoch of elements : MJD 60246.40013889 TDT (2023 Oct 29.4001) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1152023Oct11,33.08,2023,10,29,9.602275,-0.195202,0.804292,6.961633,1.690846,0.005592,0.001602,0.000000,0.000000 133.7995,-13.6515,31.90,-13.42,False TYC 5782-01296-1,20.99801526,-13.7436402,0.00,12.22,0.00,0.0,0,,21.01979839,-13.6514681,0.39,0.00,0,0,0 10,Hygiea,11.29,419.900,2.8412,0,0,1.479,5.24,,24.0,0 0,83.3367,2023,10,29,312.4776,283.1734,3.8318,0.11099,3.13989,2.79140,5.60,5.0,0.15 1.013,0.0063,0.0025,70,0.0068,Known errors,-1.00,0,-1,-1 20231029_1296-1,60232.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 20:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org