IOTA/IOTA-ES occultation update for (35) Leukothea / TYC 6937-00555-1 event on 2022 Aug 15, 15:41 UT Visible from Japan, China Summary ------- On 2022 Aug 15 UT, the 106.1 km diameter asteroid (35) Leukothea will occult a 11.9 mag star in the constellation Capricornus 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 1.41 mag to 12.99 mag (the magnitude of the asteroid) for at most 8.160 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: 2022 Aug 15, 15:35 - 2022 Aug 15, 15:46 * geocentric midpoint of event [JD]: 2459807.15375487 * magnitude of target star: 11.93 * magnitude drop [mag]: 1.41 * estimated maximum duration [s]: 8.160 * Moon: 83 % sunlit, 55° distance * Sun: 170° distance * rough path description: Japan, China The occultation path -------------------- * approximate projected width [km]: 166 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 2.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.005", 66°) * approx speed of asteroid's shadow [km/s]: 13.0052 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6937-00555-1 by 35 Leukothea on 2022 Aug 15 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 50 0 0 38 45 11 15 46 37.1 1 120 -3 39 38 9 37 53 19 .. .. .. 37 41 42 .... 51 0 0 38 18 38 15 46 36.9 1 121 -4 39 11 21 37 27 2 39 23 28 37 15 28 -0.67 52 0 0 37 52 28 15 46 36.6 2 121 -5 38 44 55 37 1 6 38 56 59 36 49 35 -0.89 53 0 0 37 26 41 15 46 36.0 3 122 -6 38 18 53 36 35 33 38 30 53 36 24 6 -0.98 54 0 0 37 1 17 15 46 35.2 4 123 -7 37 53 14 36 10 24 38 5 10 35 58 59 -1.04 55 0 0 36 36 18 15 46 34.3 5 123 -8 37 27 59 35 45 38 37 39 52 35 34 17 -1.07 56 0 0 36 11 43 15 46 33.2 6 124 -8 37 3 10 35 21 18 37 14 59 35 9 59 -1.09 57 0 0 35 47 34 15 46 31.8 7 124 -9 36 38 46 34 57 22 36 50 32 34 46 7 -1.11 58 0 0 35 23 51 15 46 30.3 8 125 -10 36 14 48 34 33 53 36 26 31 34 22 40 -1.13 59 0 0 35 0 34 15 46 28.6 9 126 -11 35 51 17 34 10 49 36 2 57 33 59 40 -1.14 60 0 0 34 37 44 15 46 26.8 9 126 -12 35 28 14 33 48 13 35 39 50 33 37 7 -1.15 61 0 0 34 15 23 15 46 24.7 10 127 -13 35 5 39 33 26 4 35 17 11 33 15 0 -1.15 62 0 0 33 53 29 15 46 22.5 11 127 -14 34 43 31 33 4 23 34 55 1 32 53 22 -1.16 63 0 0 33 32 4 15 46 20.1 12 128 -15 34 21 53 32 43 10 34 33 20 32 32 12 -1.16 64 0 0 33 11 8 15 46 17.5 13 129 -16 34 0 44 32 22 26 34 12 8 32 11 31 -1.17 65 0 0 32 50 41 15 46 14.7 14 129 -16 33 40 5 32 2 11 33 51 25 31 51 18 -1.17 66 0 0 32 30 44 15 46 11.7 15 130 -17 33 19 55 31 42 26 33 31 13 31 31 35 -1.17 67 0 0 32 11 17 15 46 8.6 16 130 -18 33 0 16 31 23 10 33 11 31 31 12 22 -1.18 68 0 0 31 52 20 15 46 5.4 16 131 -19 32 41 8 31 4 25 32 52 20 30 53 39 -1.18 69 0 0 31 33 54 15 46 1.9 17 132 -20 32 22 31 30 46 9 32 33 40 30 35 26 -1.18 70 0 0 31 15 59 15 45 58.3 18 132 -21 32 4 25 30 28 25 32 15 32 30 17 44 -1.18 71 0 0 30 58 36 15 45 54.5 19 133 -22 31 46 50 30 11 12 31 57 55 30 0 33 -1.18 72 0 0 30 41 43 15 45 50.6 20 133 -23 31 29 48 29 54 29 31 40 50 29 43 53 -1.19 73 0 0 30 25 23 15 45 46.5 20 134 -23 31 13 18 29 38 19 31 24 17 29 27 44 -1.19 74 0 0 30 9 35 15 45 42.3 21 135 -24 30 57 19 29 22 40 31 8 17 29 12 7 -1.19 75 0 0 29 54 19 15 45 37.9 22 135 -25 30 41 54 29 7 32 30 52 49 28 57 2 -1.19 76 0 0 29 39 35 15 45 33.4 23 136 -26 30 27 1 28 52 57 30 37 54 28 42 29 -1.19 77 0 0 29 25 24 15 45 28.7 24 137 -27 30 12 41 28 38 54 30 23 32 28 28 28 -1.19 78 0 0 29 11 45 15 45 23.9 24 137 -28 29 58 54 28 25 24 30 9 43 28 14 59 -1.19 79 0 0 28 58 39 15 45 19.0 25 138 -28 29 45 40 28 12 26 29 56 27 28 2 3 -1.19 80 0 0 28 46 7 15 45 13.9 26 139 -29 29 33 0 28 0 0 29 43 45 27 49 39 -1.19 81 0 0 28 34 7 15 45 8.8 26 140 -30 29 20 53 27 48 8 29 31 36 27 37 48 -1.19 82 0 0 28 22 41 15 45 3.4 27 140 -31 29 9 19 27 36 48 29 20 1 27 26 30 -1.19 83 0 0 28 11 48 15 44 58.0 28 141 -32 28 58 19 27 26 2 29 9 0 27 15 45 -1.20 84 0 0 28 1 28 15 44 52.4 29 142 -32 28 47 53 27 15 48 28 58 32 27 5 32 -1.20 85 0 0 27 51 42 15 44 46.8 29 143 -33 28 38 1 27 6 8 28 48 38 26 55 53 -1.20 86 0 0 27 42 29 15 44 41.0 30 143 -34 28 28 43 26 57 0 28 39 19 26 46 47 -1.20 87 0 0 27 33 50 15 44 35.1 30 144 -35 28 19 58 26 48 26 28 30 33 26 38 14 -1.20 88 0 0 27 25 45 15 44 29.1 31 145 -35 28 11 48 26 40 26 28 22 21 26 30 15 -1.20 89 0 0 27 18 13 15 44 23.0 32 146 -36 28 4 12 26 32 59 28 14 44 26 22 49 -1.20 90 0 0 27 11 15 15 44 16.8 32 147 -37 27 57 10 26 26 5 28 7 41 26 15 56 -1.20 91 0 0 27 4 51 15 44 10.5 33 148 -37 27 50 41 26 19 45 28 1 12 26 9 37 -1.20 92 0 0 26 59 1 15 44 4.1 33 148 -38 27 44 48 26 13 58 27 55 17 26 3 51 -1.20 93 0 0 26 53 45 15 43 57.6 34 149 -39 27 39 28 26 8 45 27 49 57 25 58 38 -1.20 94 0 0 26 49 3 15 43 51.1 34 150 -39 27 34 43 26 4 6 27 45 11 25 54 0 -1.20 95 0 0 26 44 54 15 43 44.5 35 151 -40 27 30 31 26 0 0 27 40 59 25 49 54 -1.20 96 0 0 26 41 20 15 43 37.7 35 152 -41 27 26 55 25 56 27 27 37 21 25 46 22 -1.20 97 0 0 26 38 19 15 43 31.0 36 153 -41 27 23 52 25 53 29 27 34 18 25 43 24 -1.20 98 0 0 26 35 52 15 43 24.1 36 154 -42 27 21 24 25 51 4 27 31 50 25 40 59 -1.20 99 0 0 26 33 59 15 43 17.2 37 155 -42 27 19 29 25 49 12 27 29 55 25 39 8 -1.20 100 0 0 26 32 41 15 43 10.2 37 156 -43 27 18 10 25 47 54 27 28 35 25 37 50 -1.20 101 0 0 26 31 56 15 43 3.2 37 157 -43 27 17 24 25 47 10 27 27 49 25 37 6 -1.20 102 0 0 26 31 44 15 42 56.1 38 158 -44 27 17 13 25 46 59 27 27 38 25 36 55 -1.20 103 0 0 26 32 7 15 42 49.0 38 159 -44 27 17 35 25 47 22 27 28 1 25 37 18 -1.20 104 0 0 26 33 4 15 42 41.8 38 160 -45 27 18 32 25 48 18 27 28 58 25 38 14 -1.20 105 0 0 26 34 34 15 42 34.6 38 161 -45 27 20 3 25 49 48 27 30 29 25 39 44 -1.20 106 0 0 26 36 38 15 42 27.3 39 163 -45 27 22 9 25 51 51 27 32 34 25 41 47 -1.20 107 0 0 26 39 16 15 42 20.0 39 164 -46 27 24 48 25 54 28 27 35 14 25 44 23 -1.20 108 0 0 26 42 28 15 42 12.7 39 165 -46 27 28 1 25 57 38 27 38 28 25 47 33 -1.20 109 0 0 26 46 13 15 42 5.3 39 166 -46 27 31 48 26 1 21 27 42 15 25 51 16 -1.20 110 0 0 26 50 32 15 41 57.9 39 167 -47 27 36 10 26 5 38 27 46 37 25 55 32 -1.20 111 0 0 26 55 24 15 41 50.5 40 168 -47 27 41 5 26 10 27 27 51 33 26 0 21 -1.20 112 0 0 27 0 50 15 41 43.1 40 169 -47 27 46 34 26 15 50 27 57 2 26 5 44 -1.20 113 0 0 27 6 50 15 41 35.7 40 170 -47 27 52 36 26 21 47 28 3 6 26 11 39 -1.20 114 0 0 27 13 22 15 41 28.3 40 172 -47 27 59 13 26 28 16 28 9 43 26 18 7 -1.21 115 0 0 27 20 28 15 41 20.8 40 173 -48 28 6 23 26 35 18 28 16 54 26 25 9 -1.21 116 0 0 27 28 7 15 41 13.4 40 174 -48 28 14 6 26 42 53 28 24 38 26 32 43 -1.21 117 0 0 27 36 20 15 41 5.9 40 175 -48 28 22 23 26 51 1 28 32 56 26 40 50 -1.21 118 0 0 27 45 5 15 40 58.5 40 176 -48 28 31 13 26 59 41 28 41 48 26 49 29 -1.21 119 0 0 27 54 23 15 40 51.1 39 177 -48 28 40 37 27 8 54 28 51 13 26 58 41 -1.21 120 0 0 28 4 14 15 40 43.7 39 179 -48 28 50 33 27 18 40 29 1 11 27 8 25 -1.21 121 0 0 28 14 38 15 40 36.3 39 180 -48 29 1 3 27 28 58 29 11 42 27 18 42 -1.21 122 0 0 28 25 34 15 40 28.9 39 181 -48 29 12 6 27 39 48 29 22 46 27 29 31 -1.21 123 0 0 28 37 3 15 40 21.6 39 182 -47 29 23 41 27 51 10 29 34 23 27 40 52 -1.21 124 0 0 28 49 4 15 40 14.3 38 183 -47 29 35 49 28 3 5 29 46 33 27 52 45 -1.21 125 0 0 29 1 37 15 40 7.0 38 184 -47 29 48 30 28 15 31 29 59 15 28 5 10 -1.21 126 0 0 29 14 42 15 39 59.7 38 185 -47 30 1 43 28 28 29 30 12 30 28 18 6 -1.21 127 0 0 29 28 19 15 39 52.6 38 187 -47 30 15 28 28 41 59 30 26 16 28 31 34 -1.21 128 0 0 29 42 28 15 39 45.4 37 188 -46 30 29 45 28 55 59 30 40 35 28 45 33 -1.21 129 0 0 29 57 8 15 39 38.3 37 189 -46 30 44 34 29 10 32 30 55 26 29 0 3 -1.21 130 0 0 30 12 20 15 39 31.3 37 190 -46 30 59 54 29 25 35 31 10 49 29 15 4 -1.21 131 0 0 30 28 2 15 39 24.3 36 191 -46 31 15 46 29 41 8 31 26 43 29 30 36 -1.22 132 0 0 30 44 16 15 39 17.4 36 192 -45 31 32 9 29 57 13 31 43 8 29 46 39 -1.22 133 0 0 31 1 0 15 39 10.6 35 193 -45 31 49 3 30 13 47 32 0 4 30 3 11 -1.22 134 0 0 31 18 14 15 39 3.8 35 194 -44 32 6 28 30 30 52 32 17 32 30 20 14 -1.22 135 0 0 31 35 59 15 38 57.1 34 195 -44 32 24 23 30 48 27 32 35 29 30 37 46 -1.22 136 0 0 31 54 13 15 38 50.5 34 196 -43 32 42 48 31 6 31 32 53 57 30 55 48 -1.22 137 0 0 32 12 57 15 38 44.0 33 197 -43 33 1 43 31 25 4 33 12 54 31 14 19 -1.22 138 0 0 32 32 10 15 38 37.6 33 198 -42 33 21 7 31 44 6 33 32 21 31 33 19 -1.22 139 0 0 32 51 52 15 38 31.2 32 199 -42 33 41 1 32 3 37 33 52 18 31 52 47 -1.22 140 0 0 33 12 2 15 38 25.0 32 200 -41 34 1 23 32 23 36 34 12 43 32 12 44 -1.22 141 0 0 33 32 41 15 38 18.9 31 201 -41 34 22 14 32 44 3 34 33 36 32 33 8 -1.22 142 0 0 33 53 47 15 38 12.8 30 202 -40 34 43 33 33 4 57 34 54 58 32 54 0 -1.22 143 0 0 34 15 20 15 38 6.9 30 203 -39 35 5 19 33 26 18 35 16 48 33 15 18 -1.23 144 0 0 34 37 21 15 38 1.1 29 203 -39 35 27 32 33 48 6 35 39 4 33 37 4 -1.23 145 0 0 34 59 48 15 37 55.4 28 204 -38 35 50 13 34 10 21 36 1 48 33 59 15 -1.23 146 0 0 35 22 40 15 37 49.9 28 205 -38 36 13 19 34 33 1 36 24 57 34 21 52 -1.23 147 0 0 35 45 59 15 37 44.4 27 206 -37 36 36 51 34 56 6 36 48 33 34 44 55 -1.23 148 0 0 36 9 42 15 37 39.1 26 207 -36 37 0 49 35 19 36 37 12 33 35 8 22 -1.23 149 0 0 36 33 50 15 37 34.0 26 208 -35 37 25 10 35 43 30 37 36 58 35 32 13 -1.23 150 0 0 36 58 21 15 37 28.9 25 209 -35 37 49 56 36 7 48 38 1 48 35 56 28 -1.23 151 0 0 37 23 16 15 37 24.0 24 209 -34 38 15 6 36 32 29 38 27 0 36 21 6 -1.23 152 0 0 37 48 33 15 37 19.3 23 210 -33 38 40 38 36 57 32 38 52 36 36 46 6 -1.23 153 0 0 38 14 12 15 37 14.7 23 211 -32 39 6 32 37 22 57 39 18 34 37 11 28 -1.24 154 0 0 38 40 12 15 37 10.2 22 212 -32 39 32 47 37 48 43 39 44 53 37 37 11 -1.24 155 0 0 39 6 33 15 37 5.9 21 213 -31 39 59 23 38 14 49 40 11 32 38 3 14 -1.24 156 0 0 39 33 14 15 37 1.8 20 213 -30 40 26 19 38 41 16 40 38 32 38 29 37 -1.24 157 0 0 40 0 13 15 36 57.8 19 214 -29 40 53 34 39 8 1 41 5 51 38 56 19 -1.24 158 0 0 40 27 31 15 36 53.9 19 215 -29 41 21 8 39 35 4 41 33 28 39 23 19 -1.24 159 0 0 40 55 6 15 36 50.3 18 216 -28 41 48 59 40 2 24 42 1 22 39 50 36 -1.24 160 0 0 41 22 58 15 36 46.8 17 216 -27 42 17 6 40 30 2 42 29 33 40 18 10 -1.24 161 0 0 41 51 5 15 36 43.5 16 217 -26 42 45 29 40 57 54 42 58 0 40 46 0 -1.24 162 0 0 42 19 28 15 36 40.3 15 218 -25 43 14 7 41 26 2 43 26 42 41 14 4 -1.25 163 0 0 42 48 4 15 36 37.3 15 219 -24 43 42 58 41 54 24 43 55 37 41 42 23 -1.25 164 0 0 43 16 53 15 36 34.5 14 219 -24 44 12 3 42 22 58 44 24 45 42 10 54 -1.25 165 0 0 43 45 53 15 36 31.8 13 220 -23 44 41 19 42 51 44 44 54 5 42 39 37 -1.25 166 0 0 44 15 5 15 36 29.3 12 221 -22 45 10 46 43 20 42 45 23 36 43 8 31 -1.25 167 0 0 44 44 27 15 36 27.0 11 222 -21 45 40 23 43 49 49 45 53 16 43 37 36 -1.25 168 0 0 45 13 57 15 36 24.9 10 222 -20 46 10 8 44 19 6 46 23 5 44 6 49 -1.25 169 0 0 45 43 35 15 36 22.9 10 223 -19 46 40 1 44 48 30 46 53 1 44 36 11 -1.26 170 0 0 46 13 20 15 36 21.1 9 224 -19 47 10 0 45 18 1 47 23 4 45 5 39 -1.26 171 0 0 46 43 10 15 36 19.5 8 224 -18 47 40 5 45 47 38 47 53 12 45 35 13 -1.26 172 0 0 47 13 5 15 36 18.1 7 225 -17 48 10 13 46 17 20 48 23 24 46 4 52 -1.27 173 0 0 47 43 3 15 36 16.8 6 226 -16 48 40 25 46 47 5 48 53 38 46 34 35 -1.27 174 0 0 48 13 3 15 36 15.7 5 227 -15 49 10 38 47 16 53 49 23 55 47 4 20 -1.28 175 0 0 48 43 4 15 36 14.7 5 227 -14 49 40 52 47 46 42 49 54 12 47 34 6 -1.28 176 0 0 49 13 5 15 36 13.9 4 228 -14 50 11 5 48 16 32 50 24 28 48 3 53 -1.29 177 0 0 49 43 4 15 36 13.3 3 229 -13 50 41 16 48 46 20 50 54 42 48 33 39 -1.31 178 0 0 50 13 1 15 36 12.9 2 230 -12 51 11 25 49 16 7 51 24 53 49 3 24 -1.34 179 0 0 50 42 55 15 36 12.6 1 231 -11 51 41 29 49 45 50 51 55 0 49 33 5 -1.40 180 0 0 51 12 43 15 36 12.4 1 231 -10 .. .. .. 50 15 29 .. .. .. 50 2 42 -1.67 Uncertainty in time = +/- 3 secs Prediction of 2022 Jun 13.9 Data for the target star ------------------------ * name: TYC 6937-00555-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 20 06.6248 DE: -22 52 05.686 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 20 06.6248 DE: -22 52 05.686 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (35) Leukothea asteroid class: approx. diameter [km]: 106 approx. diameter ["]: 0.070 distance from Earth [AU]: 2.07870 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#69 date of fit: 2022 Jun 06 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): 0.023", 0.005", 65.521° remarks: * orbital elements for (35)Leukothea : Mean anomaly = 84.6955443933 deg Arg. of pericenter = 213.5647209797 deg Long. of node = 353.7161303093 deg Inclination = 7.9333770088 deg Eccentricity = 0.2247443606 Semimajor axis = 2.9938289976 AU Perihelion dist = 2.3209828137 AU Mag: H = 8.75, G = 0.15 Epoch of elements : MJD 59806.65354167 TDT (2022 Aug 15.6535) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#692022Jun06,8.16,2022,8,15,15.690117,-0.100060,0.762180,-7.277854,-0.956775,0.000433,0.000856,0.000001,0.000000 120.9749,-22.7720,-54.23,13.91,False TYC 6937-00555-1,21.33517356,-22.8682462,0.00,11.93,0.00,0.0,0,,21.35696600,-22.7719959,1.41,0.00,0,0,0 35,Leukothea,12.99,106.1,2.0787,0,0,-2.226,-4.05,,6.0 0,84.5712,2022,8,15,213.5647,353.7161,7.9334,0.22474,2.99383,2.32098,8.64,5.0,0.15 1.113,0.0227,0.0047,66,0.0080,Known errors,-1.00,-1,-1,-1 20220815_0555-1,59743.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Jun 13, 20:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org