IOTA/IOTA-ES occultation update for (138) Tolosa / UCAC4 426-058101 event on 2023 Feb 26, 18:43 UT Visible from Japan, China Summary ------- On 2023 Feb 26 UT, the 50.4 km diameter asteroid (138) Tolosa will occult a 11.9 mag star in the constellation Virgo 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 1.58 mag to 13.17 mag (the magnitude of the asteroid) for at most 11.710 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 26, 18:23 - 2023 Feb 26, 19:03 * geocentric midpoint of event [JD]: 2460002.28034229 * magnitude of target star: 11.88 * magnitude drop [mag]: 1.58 * estimated maximum duration [s]: 11.710 * Moon: 44 % sunlit, 139° distance * Sun: 137° distance * rough path description: Japan, China The occultation path -------------------- * approximate projected width [km]: 65 * 1 sigma uncertainty interval [path widths]: +/- 0.08 * 1 sigma uncertainty interval [seconds]: +/- 3.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.003", 112°) * approx speed of asteroid's shadow [km/s]: 4.3031 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 426-058101 by 138 Tolosa on 2023 Feb 26 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 41 0 0 65 50 31 19 2 47.1 0 103 -28 66 8 39 65 32 28 66 11 38 65 29 30 .... 42 0 0 65 44 45 19 2 47.0 1 104 -28 66 2 55 65 26 39 66 5 55 65 23 41 -0.49 43 0 0 65 38 42 19 2 46.7 1 105 -28 65 56 55 65 20 33 65 59 55 65 17 34 -0.61 44 0 0 65 32 22 19 2 46.4 2 106 -29 65 50 39 65 14 10 65 53 39 65 11 11 -0.67 45 0 0 65 25 45 19 2 45.9 2 107 -29 65 44 5 65 7 30 65 47 6 65 4 31 -0.70 46 0 0 65 18 51 19 2 45.4 2 108 -29 65 37 14 65 0 33 65 40 16 64 57 33 -0.72 47 0 0 65 11 40 19 2 44.7 3 109 -30 65 30 7 64 53 19 65 33 9 64 50 18 -0.74 48 0 0 65 4 12 19 2 43.9 3 109 -30 65 22 41 64 45 47 65 25 44 64 42 46 -0.75 49 0 0 64 56 25 19 2 43.0 4 110 -30 65 14 59 64 37 57 65 18 2 64 34 55 -0.76 50 0 0 64 48 21 19 2 42.0 4 111 -31 65 6 58 64 29 49 65 10 2 64 26 47 -0.76 51 0 0 64 39 59 19 2 40.9 5 112 -31 64 58 40 64 21 23 65 1 44 64 18 21 -0.77 52 0 0 64 31 19 19 2 39.6 5 113 -31 64 50 3 64 12 39 64 53 8 64 9 36 -0.78 53 0 0 64 22 20 19 2 38.2 6 114 -32 64 41 8 64 3 37 64 44 14 64 0 33 -0.78 54 0 0 64 13 2 19 2 36.6 6 115 -32 64 31 55 63 54 15 64 35 1 63 51 11 -0.78 55 0 0 64 3 26 19 2 35.0 6 116 -32 64 22 22 63 44 35 64 25 30 63 41 30 -0.79 56 0 0 63 53 31 19 2 33.2 7 117 -33 64 12 31 63 34 36 64 15 39 63 31 30 -0.79 57 0 0 63 43 16 19 2 31.2 7 118 -33 64 2 20 63 24 17 64 5 29 63 21 10 -0.79 58 0 0 63 32 42 19 2 29.1 8 118 -33 63 51 50 63 13 38 63 55 0 63 10 31 -0.80 59 0 0 63 21 48 19 2 26.8 8 119 -34 63 41 1 63 2 40 63 44 11 62 59 32 -0.80 60 0 0 63 10 34 19 2 24.4 9 120 -34 63 29 51 62 51 22 63 33 2 62 48 14 -0.80 61 0 0 62 59 0 19 2 21.9 9 121 -34 63 18 22 62 39 44 63 21 33 62 36 35 -0.80 62 0 0 62 47 6 19 2 19.1 10 122 -35 63 6 32 62 27 45 63 9 44 62 24 35 -0.81 63 0 0 62 34 51 19 2 16.3 10 123 -35 62 54 21 62 15 26 62 57 34 62 12 15 -0.81 64 0 0 62 22 15 19 2 13.2 11 124 -35 62 41 50 62 2 46 62 45 4 61 59 34 -0.81 65 0 0 62 9 18 19 2 9.9 11 125 -36 62 28 58 61 49 45 62 32 12 61 46 32 -0.81 66 0 0 61 56 0 19 2 6.5 12 126 -36 62 15 44 61 36 22 62 19 0 61 33 9 -0.81 67 0 0 61 42 21 19 2 2.9 12 126 -36 62 2 10 61 22 38 62 5 26 61 19 24 -0.81 68 0 0 61 28 20 19 1 59.1 13 127 -37 61 48 13 61 8 33 61 51 30 61 5 18 -0.82 69 0 0 61 13 57 19 1 55.1 13 128 -37 61 33 55 60 54 5 61 37 12 60 50 50 -0.82 70 0 0 60 59 12 19 1 50.9 14 129 -37 61 19 14 60 39 16 61 22 33 60 36 0 -0.82 71 0 0 60 44 5 19 1 46.5 14 130 -38 61 4 12 60 24 4 61 7 31 60 20 47 -0.82 72 0 0 60 28 35 19 1 41.9 15 131 -38 60 48 47 60 8 30 60 52 6 60 5 12 -0.82 73 0 0 60 12 43 19 1 37.1 16 132 -38 60 32 59 59 52 33 60 36 20 59 49 15 -0.82 74 0 0 59 56 28 19 1 32.0 16 133 -39 60 16 49 59 36 14 60 20 10 59 32 55 -0.82 75 0 0 59 39 50 19 1 26.7 17 133 -39 60 0 15 59 19 31 60 3 37 59 16 12 -0.82 76 0 0 59 22 49 19 1 21.2 17 134 -39 59 43 19 59 2 26 59 46 42 58 59 6 -0.82 77 0 0 59 5 25 19 1 15.4 18 135 -40 59 26 0 58 44 58 59 29 23 58 41 37 -0.83 78 0 0 58 47 38 19 1 9.4 18 136 -40 59 8 17 58 27 6 59 11 41 58 23 45 -0.83 79 0 0 58 29 27 19 1 3.1 19 137 -40 58 50 10 58 8 52 58 53 35 58 5 29 -0.83 80 0 0 58 10 54 19 0 56.6 19 138 -40 58 31 41 57 50 13 58 35 6 57 46 50 -0.83 81 0 0 57 51 56 19 0 49.8 20 139 -41 58 12 48 57 31 12 58 16 14 57 27 48 -0.83 82 0 0 57 32 35 19 0 42.8 21 140 -41 57 53 31 57 11 47 57 56 58 57 8 23 -0.83 83 0 0 57 12 51 19 0 35.4 21 141 -41 57 33 50 56 51 59 57 37 18 56 48 34 -0.83 84 0 0 56 52 43 19 0 27.8 22 141 -42 57 13 46 56 31 47 57 17 14 56 28 21 -0.83 85 0 0 56 32 11 19 0 19.9 22 142 -42 56 53 18 56 11 12 56 56 47 56 7 45 -0.83 86 0 0 56 11 16 19 0 11.7 23 143 -42 56 32 27 55 50 13 56 35 57 55 46 46 -0.83 87 0 0 55 49 58 19 0 3.2 24 144 -42 56 11 12 55 28 52 56 14 43 55 25 24 -0.83 88 0 0 55 28 17 18 59 54.4 24 145 -43 55 49 34 55 7 7 55 53 5 55 3 39 -0.83 89 0 0 55 6 12 18 59 45.3 25 146 -43 55 27 33 54 44 59 55 31 4 54 41 30 -0.83 90 0 0 54 43 44 18 59 35.9 25 147 -43 55 5 8 54 22 28 55 8 40 54 18 59 -0.84 91 0 0 54 20 54 18 59 26.1 26 148 -43 54 42 21 53 59 35 54 45 53 53 56 6 -0.84 92 0 0 53 57 41 18 59 16.0 27 149 -43 54 19 11 53 36 19 54 22 44 53 32 49 -0.84 93 0 0 53 34 6 18 59 5.6 27 150 -44 53 55 38 53 12 41 53 59 11 53 9 11 -0.84 94 0 0 53 10 8 18 58 54.9 28 151 -44 53 31 43 52 48 41 53 35 17 52 45 11 -0.84 95 0 0 52 45 49 18 58 43.8 29 151 -44 53 7 26 52 24 20 53 11 0 52 20 49 -0.84 96 0 0 52 21 8 18 58 32.4 29 152 -44 52 42 47 51 59 37 52 46 22 51 56 6 -0.84 97 0 0 51 56 6 18 58 20.6 30 153 -44 52 17 47 51 34 33 52 21 22 51 31 1 -0.84 98 0 0 51 30 43 18 58 8.5 30 154 -44 51 52 26 51 9 9 51 56 1 51 5 37 -0.84 99 0 0 51 5 0 18 57 56.0 31 155 -44 51 26 45 50 43 24 51 30 20 50 39 52 -0.84 100 0 0 50 38 58 18 57 43.1 32 156 -44 51 0 43 50 17 20 51 4 19 50 13 48 -0.84 101 0 0 50 12 35 18 57 30.0 32 157 -45 50 34 22 49 50 57 50 37 58 49 47 24 -0.84 102 0 0 49 45 54 18 57 16.4 33 158 -45 50 7 42 49 24 15 50 11 18 49 20 42 -0.84 103 0 0 49 18 55 18 57 2.5 34 159 -45 49 40 43 48 57 14 49 44 19 48 53 42 -0.84 104 0 0 48 51 37 18 56 48.2 34 160 -45 49 13 26 48 29 57 49 17 2 48 26 24 -0.84 105 0 0 48 24 3 18 56 33.6 35 161 -45 48 45 52 48 2 22 48 49 28 47 58 49 -0.84 106 0 0 47 56 11 18 56 18.6 36 162 -45 48 18 1 47 34 30 48 21 37 47 30 57 -0.84 107 0 0 47 28 4 18 56 3.3 36 163 -45 47 49 53 47 6 23 47 53 29 47 2 50 -0.84 108 0 0 46 59 41 18 55 47.6 37 164 -45 47 21 31 46 38 1 47 25 7 46 34 28 -0.84 109 0 0 46 31 4 18 55 31.5 37 165 -44 46 52 53 46 9 24 46 56 29 46 5 51 -0.84 110 0 0 46 2 13 18 55 15.1 38 166 -44 46 24 1 45 40 33 46 27 37 45 37 1 -0.84 111 0 0 45 33 8 18 54 58.3 39 167 -44 45 54 56 45 11 30 45 58 31 45 7 57 -0.84 112 0 0 45 3 52 18 54 41.2 39 169 -44 45 25 38 44 42 14 45 29 13 44 38 42 -0.84 113 0 0 44 34 23 18 54 23.7 40 170 -44 44 56 8 44 12 47 44 59 43 44 9 14 -0.84 114 0 0 44 4 43 18 54 5.9 41 171 -44 44 26 27 43 43 8 44 30 2 43 39 36 -0.84 115 0 0 43 34 54 18 53 47.8 41 172 -44 43 56 35 43 13 20 44 0 10 43 9 48 -0.84 116 0 0 43 4 54 18 53 29.4 42 173 -43 43 26 34 42 43 23 43 30 9 42 39 51 -0.84 117 0 0 42 34 47 18 53 10.6 42 174 -43 42 56 25 42 13 17 42 59 59 42 9 46 -0.84 118 0 0 42 4 32 18 52 51.5 43 175 -43 42 26 7 41 43 4 42 29 41 41 39 33 -0.84 119 0 0 41 34 9 18 52 32.1 43 177 -42 41 55 43 41 12 44 41 59 16 41 9 14 -0.83 120 0 0 41 3 41 18 52 12.4 44 178 -42 41 25 12 40 42 18 41 28 45 40 38 48 -0.83 121 0 0 40 33 8 18 51 52.4 44 179 -42 40 54 37 40 11 47 40 58 9 40 8 18 -0.83 122 0 0 40 2 30 18 51 32.1 45 180 -41 40 23 56 39 41 12 40 27 28 39 37 43 -0.83 123 0 0 39 31 49 18 51 11.5 45 182 -41 39 53 12 39 10 34 39 56 44 39 7 5 -0.83 124 0 0 39 1 5 18 50 50.7 46 183 -41 39 22 25 38 39 53 39 25 56 38 36 25 -0.83 125 0 0 38 30 19 18 50 29.6 46 184 -40 38 51 36 38 9 10 38 55 7 38 5 43 -0.83 126 0 0 37 59 33 18 50 8.3 47 186 -40 38 20 46 37 38 27 38 24 17 37 35 0 -0.83 127 0 0 37 28 46 18 49 46.7 47 187 -39 37 49 56 37 7 43 37 53 26 37 4 17 -0.83 128 0 0 36 58 0 18 49 24.9 48 189 -39 37 19 7 36 37 1 37 22 36 36 33 35 -0.83 129 0 0 36 27 16 18 49 2.9 48 190 -38 36 48 19 36 6 20 36 51 47 36 2 54 -0.83 130 0 0 35 56 34 18 48 40.7 48 192 -38 36 17 34 35 35 41 36 21 1 35 32 16 -0.83 131 0 0 35 25 55 18 48 18.2 49 193 -37 35 46 51 35 5 6 35 50 18 35 1 42 -0.83 132 0 0 34 55 20 18 47 55.6 49 194 -37 35 16 13 34 34 35 35 19 39 34 31 11 -0.82 133 0 0 34 24 50 18 47 32.9 49 196 -36 34 45 39 34 4 9 34 49 5 34 0 46 -0.82 134 0 0 33 54 26 18 47 10.0 50 198 -36 34 15 11 33 33 48 34 18 36 33 30 26 -0.82 135 0 0 33 24 8 18 46 46.9 50 199 -35 33 44 49 33 3 34 33 48 14 33 0 12 -0.82 136 0 0 32 53 57 18 46 23.7 50 201 -34 33 14 34 32 33 28 33 17 58 32 30 6 -0.82 137 0 0 32 23 55 18 46 0.4 50 202 -34 32 44 28 32 3 29 32 47 51 32 0 8 -0.82 138 0 0 31 54 0 18 45 36.9 51 204 -33 32 14 29 31 33 39 32 17 52 31 30 18 -0.82 139 0 0 31 24 16 18 45 13.4 51 205 -32 31 44 41 31 3 58 31 48 3 31 0 38 -0.82 140 0 0 30 54 41 18 44 49.8 51 207 -32 31 15 2 30 34 27 31 18 23 30 31 8 -0.82 141 0 0 30 25 18 18 44 26.1 51 208 -31 30 45 34 30 5 8 30 48 55 30 1 50 -0.81 142 0 0 29 56 6 18 44 2.4 51 210 -30 30 16 18 29 36 0 30 19 38 29 32 42 -0.81 143 0 0 29 27 6 18 43 38.6 51 212 -30 29 47 14 29 7 4 29 50 34 29 3 47 -0.81 144 0 0 28 58 19 18 43 14.8 51 213 -29 29 18 23 28 38 21 29 21 41 28 35 5 -0.81 145 0 0 28 29 45 18 42 51.0 51 215 -28 28 49 45 28 9 51 28 53 3 28 6 36 -0.81 146 0 0 28 1 26 18 42 27.2 51 216 -27 28 21 22 27 41 36 28 24 39 27 38 21 -0.81 147 0 0 27 33 21 18 42 3.3 51 218 -27 27 53 13 27 13 35 27 56 29 27 10 21 -0.81 148 0 0 27 5 32 18 41 39.5 50 219 -26 27 25 20 26 45 50 27 28 35 26 42 36 -0.81 149 0 0 26 37 58 18 41 15.8 50 221 -25 26 57 42 26 18 21 27 0 57 26 15 8 -0.81 150 0 0 26 10 42 18 40 52.0 50 222 -24 26 30 22 25 51 8 26 33 36 25 47 56 -0.81 151 0 0 25 43 42 18 40 28.4 50 224 -24 26 3 18 25 24 12 26 6 32 25 21 1 -0.81 152 0 0 25 17 0 18 40 4.8 50 225 -23 25 36 32 24 57 34 25 39 45 24 54 23 -0.80 153 0 0 24 50 36 18 39 41.3 49 227 -22 25 10 4 24 31 14 25 13 17 24 28 4 -0.80 154 0 0 24 24 31 18 39 17.8 49 228 -21 24 43 55 24 5 13 24 47 7 24 2 3 -0.80 155 0 0 23 58 45 18 38 54.5 49 229 -20 24 18 6 23 39 31 24 21 17 23 36 22 -0.80 156 0 0 23 33 19 18 38 31.3 48 231 -19 23 52 36 23 14 9 23 55 46 23 11 0 -0.80 157 0 0 23 8 14 18 38 8.2 48 232 -19 23 27 26 22 49 7 23 30 36 22 45 59 -0.80 158 0 0 22 43 28 18 37 45.3 48 233 -18 23 2 37 22 24 25 23 5 46 22 21 18 -0.80 159 0 0 22 19 4 18 37 22.5 47 235 -17 22 38 9 22 0 5 22 41 18 21 56 58 -0.80 160 0 0 21 55 2 18 36 59.9 47 236 -16 22 14 3 21 36 6 22 17 11 21 33 0 -0.80 161 0 0 21 31 21 18 36 37.4 46 237 -15 21 50 19 21 12 29 21 53 27 21 9 23 -0.80 162 0 0 21 8 3 18 36 15.1 46 238 -14 21 26 58 20 49 14 21 30 4 20 46 9 -0.80 163 0 0 20 45 8 18 35 53.1 45 239 -13 21 3 59 20 26 22 21 7 5 20 23 18 -0.80 164 0 0 20 22 36 18 35 31.2 45 240 -13 20 41 23 20 3 54 20 44 29 20 0 50 -0.80 165 0 0 20 0 28 18 35 9.5 44 241 -12 20 19 12 19 41 49 20 22 17 19 38 45 -0.80 166 0 0 19 38 43 18 34 48.1 43 242 -11 19 57 24 19 20 8 20 0 29 19 17 5 -0.80 167 0 0 19 17 23 18 34 26.9 43 243 -10 19 36 1 18 58 51 19 39 5 18 55 49 -0.80 168 0 0 18 56 28 18 34 5.9 42 244 -9 19 15 3 18 37 59 19 18 6 18 34 57 -0.80 169 0 0 18 35 58 18 33 45.2 42 245 -8 18 54 29 18 17 32 18 57 33 18 14 30 -0.80 170 0 0 18 15 53 18 33 24.7 41 246 -7 18 34 22 17 57 30 18 37 24 17 54 29 -0.80 171 0 0 17 56 14 18 33 4.5 40 247 -6 18 14 40 17 37 54 18 17 42 17 34 54 -0.80 172 0 0 17 37 2 18 32 44.6 40 248 -5 17 55 24 17 18 44 17 58 26 17 15 44 -0.80 173 0 0 17 18 15 18 32 25.0 39 248 -5 17 36 35 17 0 0 17 39 36 16 57 1 -0.80 174 0 0 16 59 56 18 32 5.7 38 249 -4 17 18 13 16 41 43 17 21 14 16 38 44 -0.80 175 0 0 16 42 3 18 31 46.6 37 250 -3 17 0 18 16 23 53 17 3 18 16 20 55 -0.80 176 0 0 16 24 38 18 31 27.9 37 251 -2 16 42 50 16 6 30 16 45 50 16 3 32 -0.80 177 0 0 16 7 40 18 31 9.5 36 251 -1 16 25 49 15 49 35 16 28 49 15 46 37 -0.80 178 0 0 15 51 10 18 30 51.4 35 252 0 16 9 17 15 33 8 16 12 16 15 30 10 -0.80 179 0 0 15 35 9 18 30 33.7 34 252 1 15 53 13 15 17 8 15 56 12 15 14 11 -0.80 180 0 0 15 19 35 18 30 16.3 34 253 2 15 37 38 15 1 37 15 40 36 14 58 41 -0.80 -179 0 0 15 4 31 18 29 59.2 33 254 3 15 22 31 14 46 35 15 25 29 14 43 39 -0.80 -178 0 0 14 49 56 18 29 42.5 32 254 4 15 7 54 14 32 2 15 10 52 14 29 6 -0.80 -177 0 0 14 35 49 18 29 26.2 31 255 5 14 53 46 14 17 57 14 56 43 14 15 2 -0.80 -176 0 0 14 22 13 18 29 10.2 31 255 6 14 40 7 14 4 23 14 43 4 14 1 27 -0.80 -175 0 0 14 9 6 18 28 54.6 30 256 7 14 26 58 13 51 17 14 29 55 13 48 22 -0.80 -174 0 0 13 56 29 18 28 39.4 29 256 7 14 14 20 13 38 42 14 17 16 13 35 47 -0.80 -173 0 0 13 44 22 18 28 24.6 28 257 8 14 2 12 13 26 37 14 5 8 13 23 42 -0.80 -172 0 0 13 32 46 18 28 10.2 27 257 9 13 50 34 13 15 2 13 53 30 13 12 8 -0.80 -171 0 0 13 21 40 18 27 56.2 26 257 10 13 39 27 13 3 58 13 42 23 13 1 4 -0.81 -170 0 0 13 11 6 18 27 42.6 25 258 11 13 28 51 12 53 25 13 31 47 12 50 31 -0.81 -169 0 0 13 1 3 18 27 29.3 25 258 12 13 18 47 12 43 23 13 21 42 12 40 29 -0.81 -168 0 0 12 51 31 18 27 16.6 24 259 13 13 9 14 12 33 52 13 12 9 12 30 59 -0.81 -167 0 0 12 42 31 18 27 4.2 23 259 14 13 0 12 12 24 53 13 3 7 12 22 0 -0.81 -166 0 0 12 34 2 18 26 52.3 22 259 15 12 51 43 12 16 26 12 54 38 12 13 33 -0.81 -165 0 0 12 26 6 18 26 40.8 21 260 16 12 43 46 12 8 30 12 46 41 12 5 37 -0.81 -164 0 0 12 18 42 18 26 29.7 20 260 17 12 36 22 12 1 7 12 39 16 11 58 14 -0.82 -163 0 0 12 11 51 18 26 19.1 19 260 18 12 29 30 11 54 17 12 32 24 11 51 24 -0.82 -162 0 0 12 5 33 18 26 9.0 18 260 19 12 23 11 11 47 59 12 26 5 11 45 6 -0.82 -161 0 0 11 59 48 18 25 59.3 17 261 20 12 17 25 11 42 14 12 20 20 11 39 22 -0.82 -160 0 0 11 54 36 18 25 50.1 17 261 21 12 12 13 11 37 3 12 15 7 11 34 10 -0.82 -159 0 0 11 49 57 18 25 41.4 16 261 21 12 7 34 11 32 24 12 10 29 11 29 32 -0.83 -158 0 0 11 45 52 18 25 33.1 15 262 22 12 3 30 11 28 20 12 6 24 11 25 27 -0.83 -157 0 0 11 42 22 18 25 25.3 14 262 23 11 59 59 11 24 49 12 2 53 11 21 56 -0.83 -156 0 0 11 39 25 18 25 18.0 13 262 24 11 57 2 11 21 52 11 59 57 11 19 0 -0.84 -155 0 0 11 37 3 18 25 11.2 12 262 25 11 54 41 11 19 30 11 57 35 11 16 37 -0.84 -154 0 0 11 35 16 18 25 4.9 11 262 26 11 52 53 11 17 42 11 55 48 11 14 49 -0.84 -153 0 0 11 34 3 18 24 59.1 10 263 27 11 51 41 11 16 29 11 54 36 11 13 36 -0.85 -152 0 0 11 33 26 18 24 53.8 9 263 28 11 51 5 11 15 51 11 53 59 11 12 58 -0.85 -151 0 0 11 33 24 18 24 49.0 8 263 29 11 51 3 11 15 48 11 53 58 11 12 55 -0.86 -150 0 0 11 33 57 18 24 44.7 7 263 30 11 51 38 11 16 21 11 54 32 11 13 28 -0.87 -149 0 0 11 35 7 18 24 41.0 6 264 31 11 52 48 11 17 30 11 55 43 11 14 36 -0.88 -148 0 0 11 36 52 18 24 37.8 5 264 32 11 54 34 11 19 14 11 57 29 11 16 21 -0.89 -147 0 0 11 39 14 18 24 35.1 4 264 33 11 56 57 11 21 35 11 59 53 11 18 41 -0.90 -146 0 0 11 42 12 18 24 33.0 3 264 33 11 59 57 11 24 32 12 2 52 11 21 38 -0.93 -145 0 0 11 45 47 18 24 31.4 2 264 34 12 3 33 11 28 5 12 6 29 11 25 11 -0.98 -144 0 0 11 49 59 18 24 30.3 1 265 35 12 7 47 11 32 16 12 10 43 11 29 22 -1.10 -143 0 0 11 54 49 18 24 29.8 0 265 36 12 12 38 11 37 4 12 15 34 11 34 9 -1.82 Uncertainty in time = +/- 3 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 426-058101 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 22 26.1377 DE: -04 57 13.579 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 22 26.1378 DE: -04 57 13.579 * position source: Gaia DR3 * 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: (138) Tolosa asteroid class: approx. diameter [km]: 50 approx. diameter ["]: 0.038 distance from Earth [AU]: 1.85050 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#92 date of fit: 2023 Feb 07 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): 0.011", 0.003", 112.495° remarks: * orbital elements for (138)Tolosa : Mean anomaly = 246.2024540577 deg Arg. of pericenter = 260.6219464660 deg Long. of node = 54.7225170669 deg Inclination = 3.2021641297 deg Eccentricity = 0.1619813744 Semimajor axis = 2.4496473543 AU Perihelion dist = 2.0528501091 AU Mag: H = 8.87, G = 0.15 Epoch of elements : MJD 60001.78041667 TDT (2023 Feb 26.7804) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#922023Feb07,11.71,2023,2,26,18.728215,0.287055,0.560528,-2.161799,1.107104,-0.003788,0.001241,0.000001,0.000000 123.6332,-5.0759,-97.71,-8.61,False UCAC4 426-058101,13.37392714,-4.9537719,0.00,11.88,0.00,0.0,0,,13.39405131,-5.0758687,1.58,0.00,0,0,0 138,Tolosa,13.17,50.4,1.8505,0,0,-0.688,5.26,,2.8,0 0,246.0018,2023,2,26,260.6219,54.7225,3.2022,0.16198,2.44965,2.05285,8.88,5.0,0.15 1.082,0.0110,0.0030,112,0.0031,Known errors,-1.00,-1,-1,-1 20230226_058101,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org