IOTA/IOTA-ES occultation update for (376) Geometria / UCAC4 335-142641 event on 2024 Sep 29, 21:05 UT Visible from Summary ------- On 2024 Sep 29 UT, the 35.7250549528039 km diameter asteroid (376) Geometria will occult a 11.7 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.00 mag to 13.54 mag (the magnitude of the asteroid) for at most 1.580 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: 2024 Sep 29, 21:01 - 2024 Sep 29, 21:08 * geocentric midpoint of event [JD]: 2460583.37851025 * magnitude of target star: 11.73 * magnitude drop [mag]: 2.00 * estimated maximum duration [s]: 1.580 * Moon: 7 % sunlit, 118° distance * Sun: 87° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 53 * 1 sigma uncertainty interval [path widths]: +/- 0.12 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.003", 83°) * approx speed of asteroid's shadow [km/s]: 22.6870 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 335-142641 by 376 Geometria on 2024 Sep 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 -121 0 0 36 59 30 21 1 54.7 0 120 47 36 43 2 37 16 4 36 39 8 37 20 0 .... -120 0 0 36 32 29 21 1 54.8 1 120 47 36 16 5 36 48 59 36 12 12 36 52 54 -0.50 -119 0 0 36 5 46 21 1 55.0 2 121 47 35 49 26 36 22 12 35 45 34 36 26 7 -0.75 -118 0 0 35 39 22 21 1 55.3 3 121 47 35 23 6 35 55 45 35 19 15 35 59 38 -0.85 -117 0 0 35 13 18 21 1 55.7 4 122 47 34 57 5 35 29 37 34 53 16 35 33 29 -0.91 -116 0 0 34 47 34 21 1 56.2 5 123 47 34 31 25 35 3 49 34 27 37 35 7 41 -0.94 -115 0 0 34 22 12 21 1 56.9 6 123 47 34 6 7 34 38 23 34 2 19 34 42 13 -0.97 -114 0 0 33 57 11 21 1 57.6 7 124 47 33 41 10 34 13 18 33 37 23 34 17 8 -0.99 -113 0 0 33 32 34 21 1 58.5 8 124 47 33 16 36 33 48 37 33 12 50 33 52 26 -1.00 -112 0 0 33 8 19 21 1 59.4 9 125 46 32 52 25 33 24 19 32 48 40 33 28 7 -1.01 -111 0 0 32 44 29 21 2 0.5 10 125 46 32 28 38 33 0 25 32 24 54 33 4 12 -1.02 -110 0 0 32 21 4 21 2 1.7 10 126 46 32 5 17 32 36 56 32 1 33 32 40 42 -1.03 -109 0 0 31 58 4 21 2 2.9 11 127 46 31 42 20 32 13 53 31 38 37 32 17 38 -1.03 -108 0 0 31 35 30 21 2 4.3 12 127 45 31 19 50 31 51 15 31 16 8 31 55 0 -1.04 -107 0 0 31 13 23 21 2 5.8 13 128 45 30 57 46 31 29 4 30 54 5 31 32 48 -1.04 -106 0 0 30 51 42 21 2 7.4 14 128 45 30 36 9 31 7 21 30 32 29 31 11 4 -1.05 -105 0 0 30 30 30 21 2 9.1 15 129 44 30 15 0 30 46 5 30 11 20 30 49 47 -1.05 -104 0 0 30 9 46 21 2 10.9 16 129 44 29 54 19 30 25 18 29 50 40 30 28 59 -1.05 -103 0 0 29 49 31 21 2 12.9 17 130 43 29 34 7 30 5 0 29 30 29 30 8 40 -1.06 -102 0 0 29 29 45 21 2 14.9 18 131 43 29 14 24 29 45 11 29 10 47 29 48 50 -1.06 -101 0 0 29 10 29 21 2 17.0 19 131 42 28 55 11 29 25 51 28 51 35 29 29 31 -1.06 -100 0 0 28 51 43 21 2 19.2 19 132 42 28 36 28 29 7 2 28 32 52 29 10 41 -1.06 - 99 0 0 28 33 28 21 2 21.5 20 133 41 28 18 16 28 48 44 28 14 40 28 52 22 -1.07 - 98 0 0 28 15 43 21 2 23.9 21 133 41 28 0 34 28 30 57 27 57 0 28 34 34 -1.07 - 97 0 0 27 58 30 21 2 26.4 22 134 40 27 43 24 28 13 42 27 39 50 28 17 18 -1.07 - 96 0 0 27 41 49 21 2 29.0 23 134 39 27 26 45 27 56 58 27 23 12 28 0 33 -1.07 - 95 0 0 27 25 40 21 2 31.7 24 135 39 27 10 39 27 40 46 27 7 6 27 44 21 -1.07 - 94 0 0 27 10 4 21 2 34.5 24 136 38 26 55 5 27 25 7 26 51 33 27 28 42 -1.07 - 93 0 0 26 55 0 21 2 37.4 25 136 37 26 40 4 27 10 1 26 36 32 27 13 35 -1.08 - 92 0 0 26 40 29 21 2 40.3 26 137 37 26 25 35 26 55 28 26 22 4 26 59 1 -1.08 - 91 0 0 26 26 32 21 2 43.4 27 138 36 26 11 40 26 41 29 26 8 10 26 45 1 -1.08 - 90 0 0 26 13 8 21 2 46.5 28 139 35 25 58 19 26 28 3 25 54 49 26 31 35 -1.08 - 89 0 0 26 0 19 21 2 49.7 28 139 34 25 45 31 26 15 11 25 42 1 26 18 43 -1.08 - 88 0 0 25 48 3 21 2 53.0 29 140 34 25 33 17 26 2 53 25 29 48 26 6 25 -1.08 - 87 0 0 25 36 22 21 2 56.3 30 141 33 25 21 38 25 51 10 25 18 9 25 54 41 -1.08 - 86 0 0 25 25 15 21 2 59.7 31 142 32 25 10 33 25 40 2 25 7 4 25 43 32 -1.08 - 85 0 0 25 14 43 21 3 3.2 31 142 31 25 0 3 25 29 28 24 56 35 25 32 58 -1.09 - 84 0 0 25 4 46 21 3 6.8 32 143 30 24 50 7 25 19 30 24 46 40 25 22 59 -1.09 - 83 0 0 24 55 24 21 3 10.4 33 144 30 24 40 47 25 10 6 24 37 20 25 13 36 -1.09 - 82 0 0 24 46 38 21 3 14.1 33 145 29 24 32 2 25 1 18 24 28 35 25 4 47 -1.09 - 81 0 0 24 38 27 21 3 17.9 34 146 28 24 23 52 24 53 6 24 20 26 24 56 35 -1.09 - 80 0 0 24 30 52 21 3 21.7 34 147 27 24 16 18 24 45 30 24 12 52 24 48 58 -1.09 - 79 0 0 24 23 52 21 3 25.6 35 148 26 24 9 19 24 38 29 24 5 53 24 41 57 -1.09 - 78 0 0 24 17 28 21 3 29.6 36 148 25 24 2 56 24 32 4 23 59 31 24 35 32 -1.09 - 77 0 0 24 11 40 21 3 33.6 36 149 25 23 57 10 24 26 15 23 53 44 24 29 43 -1.09 - 76 0 0 24 6 29 21 3 37.6 37 150 24 23 51 59 24 21 3 23 48 33 24 24 30 -1.09 - 75 0 0 24 1 53 21 3 41.7 37 151 23 23 47 24 24 16 26 23 43 59 24 19 54 -1.09 - 74 0 0 23 57 54 21 3 45.9 38 152 22 23 43 25 24 12 26 23 40 0 24 15 54 -1.09 - 73 0 0 23 54 31 21 3 50.1 38 153 21 23 40 2 24 9 3 23 36 38 24 12 30 -1.10 - 72 0 0 23 51 44 21 3 54.3 39 155 20 23 37 16 24 6 16 23 33 51 24 9 43 -1.10 - 71 0 0 23 49 34 21 3 58.6 39 156 19 23 35 6 24 4 5 23 31 41 24 7 32 -1.10 - 70 0 0 23 48 0 21 4 2.9 40 157 18 23 33 33 24 2 31 23 30 8 24 5 58 -1.10 - 69 0 0 23 47 2 21 4 7.2 40 158 17 23 32 35 24 1 33 23 29 11 24 5 0 -1.10 - 68 0 0 23 46 41 21 4 11.6 40 159 17 23 32 14 24 1 13 23 28 50 24 4 39 -1.10 - 67 0 0 23 46 57 21 4 16.0 41 160 16 23 32 30 24 1 28 23 29 5 24 4 55 -1.10 - 66 0 0 23 47 49 21 4 20.5 41 161 15 23 33 22 24 2 21 23 29 57 24 5 48 -1.10 - 65 0 0 23 49 18 21 4 24.9 41 163 14 23 34 50 24 3 50 23 31 26 24 7 17 -1.10 - 64 0 0 23 51 23 21 4 29.4 41 164 13 23 36 55 24 5 55 23 33 31 24 9 22 -1.10 - 63 0 0 23 54 5 21 4 34.0 42 165 12 23 39 37 24 8 38 23 36 12 24 12 5 -1.10 - 62 0 0 23 57 24 21 4 38.5 42 166 11 23 42 55 24 11 57 23 39 29 24 15 24 -1.10 - 61 0 0 24 1 18 21 4 43.0 42 167 10 23 46 49 24 15 52 23 43 23 24 19 19 -1.10 - 60 0 0 24 5 50 21 4 47.6 42 169 9 23 51 19 24 20 24 23 47 54 24 23 52 -1.10 - 59 0 0 24 10 57 21 4 52.2 42 170 8 23 56 26 24 25 32 23 53 0 24 29 0 -1.10 - 58 0 0 24 16 41 21 4 56.8 42 171 7 24 2 9 24 31 17 23 58 43 24 34 45 -1.10 - 57 0 0 24 23 1 21 5 1.3 42 172 6 24 8 28 24 37 39 24 5 2 24 41 7 -1.10 - 56 0 0 24 29 57 21 5 5.9 42 174 5 24 15 23 24 44 36 24 11 56 24 48 5 -1.10 - 55 0 0 24 37 30 21 5 10.5 42 175 4 24 22 54 24 52 10 24 19 27 24 55 38 -1.10 - 54 0 0 24 45 38 21 5 15.1 42 176 4 24 31 1 25 0 19 24 27 34 25 3 48 -1.10 - 53 0 0 24 54 22 21 5 19.7 42 178 3 24 39 43 25 9 5 24 36 16 25 12 34 -1.10 - 52 0 0 25 3 42 21 5 24.3 42 179 2 24 49 2 25 18 26 24 45 34 25 21 56 -1.10 - 51 0 0 25 13 37 21 5 28.8 42 180 1 24 58 55 25 28 23 24 55 27 25 31 53 -1.10 - 50 0 0 25 24 8 21 5 33.4 42 181 0 25 9 24 25 38 56 25 5 56 25 42 26 -1.10 - 49 0 0 25 35 14 21 5 37.9 41 183 -1 25 20 29 25 50 3 25 17 0 25 53 35 -1.10 - 48 0 0 25 46 55 21 5 42.4 41 184 -2 25 32 8 26 1 46 25 28 38 26 5 18 -1.10 - 47 0 0 25 59 11 21 5 46.9 41 185 -3 25 44 22 26 14 4 25 40 52 26 17 37 -1.10 - 46 0 0 26 12 2 21 5 51.4 41 186 -4 25 57 10 26 26 57 25 53 40 26 30 30 -1.10 - 45 0 0 26 25 27 21 5 55.9 40 187 -5 26 10 33 26 40 25 26 7 2 26 43 58 -1.10 - 44 0 0 26 39 26 21 6 0.3 40 189 -6 26 24 30 26 54 26 26 20 59 26 58 0 -1.10 - 43 0 0 26 53 59 21 6 4.7 39 190 -7 26 39 1 27 9 2 26 35 29 27 12 36 -1.10 - 42 0 0 27 9 6 21 6 9.0 39 191 -8 26 54 6 27 24 11 26 50 33 27 27 46 -1.10 - 41 0 0 27 24 47 21 6 13.3 39 192 -8 27 9 44 27 39 54 27 6 11 27 43 30 -1.10 - 40 0 0 27 41 0 21 6 17.6 38 193 -9 27 25 55 27 56 11 27 22 21 27 59 47 -1.10 - 39 0 0 27 57 47 21 6 21.8 38 194 -10 27 42 38 28 13 0 27 39 4 28 16 37 -1.10 - 38 0 0 28 15 5 21 6 26.0 37 195 -11 27 59 54 28 30 21 27 56 19 28 33 59 -1.10 - 37 0 0 28 32 56 21 6 30.1 37 196 -12 28 17 42 28 48 15 28 14 6 28 51 53 -1.10 - 36 0 0 28 51 19 21 6 34.2 36 197 -13 28 36 2 29 6 40 28 32 25 29 10 19 -1.10 - 35 0 0 29 10 12 21 6 38.2 35 199 -14 28 54 52 29 25 37 28 51 15 29 29 17 -1.10 - 34 0 0 29 29 37 21 6 42.2 35 200 -15 29 14 14 29 45 5 29 10 36 29 48 46 -1.10 - 33 0 0 29 49 32 21 6 46.1 34 201 -15 29 34 6 30 5 3 29 30 27 30 8 45 -1.10 - 32 0 0 30 9 57 21 6 50.0 34 202 -16 29 54 28 30 25 32 29 50 48 30 29 14 -1.10 - 31 0 0 30 30 52 21 6 53.8 33 202 -17 30 15 19 30 46 30 30 11 39 30 50 12 -1.10 - 30 0 0 30 52 15 21 6 57.5 32 203 -18 30 36 39 31 7 56 30 32 58 31 11 40 -1.10 - 29 0 0 31 14 7 21 7 1.1 32 204 -19 30 58 28 31 29 52 30 54 46 31 33 36 -1.10 - 28 0 0 31 36 27 21 7 4.7 31 205 -20 31 20 44 31 52 15 31 17 1 31 56 0 -1.10 - 27 0 0 31 59 14 21 7 8.2 30 206 -20 31 43 27 32 15 6 31 39 44 32 18 52 -1.10 - 26 0 0 32 22 28 21 7 11.6 30 207 -21 32 6 37 32 38 23 32 2 53 32 42 10 -1.10 - 25 0 0 32 46 7 21 7 15.0 29 208 -22 32 30 14 33 2 7 32 26 29 33 5 54 -1.10 - 24 0 0 33 10 12 21 7 18.2 28 209 -23 32 54 15 33 26 15 32 50 29 33 30 4 -1.10 - 23 0 0 33 34 42 21 7 21.4 27 210 -23 33 18 41 33 50 49 33 14 54 33 54 39 -1.10 - 22 0 0 33 59 36 21 7 24.5 26 210 -24 33 43 31 34 15 46 33 39 43 34 19 37 -1.10 - 21 0 0 34 24 53 21 7 27.5 26 211 -25 34 8 44 34 41 7 34 4 56 34 44 59 -1.10 - 20 0 0 34 50 32 21 7 30.4 25 212 -26 34 34 20 35 6 51 34 30 30 35 10 43 -1.10 - 19 0 0 35 16 34 21 7 33.2 24 213 -26 35 0 17 35 32 56 34 56 27 35 36 49 -1.10 - 18 0 0 35 42 56 21 7 36.0 23 214 -27 35 26 35 35 59 22 35 22 44 36 3 16 -1.10 - 17 0 0 36 9 38 21 7 38.6 22 214 -28 35 53 13 36 26 8 35 49 21 36 30 3 -1.10 - 16 0 0 36 36 39 21 7 41.1 22 215 -28 36 20 11 36 53 13 36 16 18 36 57 9 -1.10 - 15 0 0 37 3 58 21 7 43.6 21 216 -29 36 47 26 37 20 36 36 43 33 37 24 34 -1.11 - 14 0 0 37 31 36 21 7 45.9 20 217 -29 37 15 0 37 48 17 37 11 5 37 52 16 -1.11 - 13 0 0 37 59 29 21 7 48.2 19 217 -30 37 42 49 38 16 15 37 38 54 38 20 14 -1.11 - 12 0 0 38 27 38 21 7 50.3 18 218 -30 38 10 55 38 44 28 38 6 58 38 48 28 -1.11 - 11 0 0 38 56 2 21 7 52.4 17 219 -31 38 39 15 39 12 56 38 35 17 39 16 57 -1.11 - 10 0 0 39 24 39 21 7 54.3 16 220 -32 39 7 48 39 41 37 39 3 49 39 45 39 -1.11 - 9 0 0 39 53 29 21 7 56.1 16 220 -32 39 36 34 40 10 31 39 32 35 40 14 34 -1.11 - 8 0 0 40 22 31 21 7 57.9 15 221 -32 40 5 32 40 39 36 40 1 31 40 43 40 -1.11 - 7 0 0 40 51 43 21 7 59.5 14 222 -33 40 34 40 41 8 52 40 30 39 41 12 56 -1.11 - 6 0 0 41 21 4 21 8 1.0 13 222 -33 41 3 58 41 38 17 40 59 56 41 42 23 -1.11 - 5 0 0 41 50 34 21 8 2.4 12 223 -34 41 33 24 42 7 51 41 29 22 42 11 57 -1.11 - 4 0 0 42 20 12 21 8 3.7 11 224 -34 42 2 58 42 37 32 41 58 55 42 41 39 -1.11 - 3 0 0 42 49 55 21 8 4.9 10 225 -34 42 32 38 43 7 19 42 28 34 43 11 27 -1.11 - 2 0 0 43 19 44 21 8 6.0 9 225 -35 43 2 24 43 37 12 42 58 19 43 41 20 -1.12 - 1 0 0 43 49 37 21 8 7.1 9 226 -35 43 32 14 44 7 8 43 28 8 44 11 18 -1.12 0 0 0 44 19 33 21 8 8.0 8 227 -35 44 2 6 44 37 7 43 58 0 44 41 18 -1.12 1 0 0 44 49 31 21 8 8.8 7 227 -36 44 32 1 45 7 8 44 27 53 45 11 19 -1.12 2 0 0 45 19 29 21 8 9.5 6 228 -36 45 1 56 45 37 10 44 57 48 45 41 22 -1.13 3 0 0 45 49 28 21 8 10.1 5 229 -36 45 31 52 46 7 11 45 27 43 46 11 24 -1.13 4 0 0 46 19 24 21 8 10.6 4 230 -36 46 1 46 46 37 11 45 57 36 46 41 24 -1.14 5 0 0 46 49 19 21 8 11.0 3 230 -36 46 31 37 47 7 8 46 27 27 47 11 22 -1.15 6 0 0 47 19 10 21 8 11.3 3 231 -37 47 1 26 47 37 1 46 57 15 47 41 16 -1.17 7 0 0 47 48 56 21 8 11.5 2 232 -37 47 31 9 48 6 50 47 26 58 48 11 5 -1.21 8 0 0 48 18 36 21 8 11.7 1 233 -37 48 0 47 48 36 32 47 56 36 48 40 48 -1.30 9 0 0 48 48 10 21 8 11.7 0 233 -37 48 30 19 .. .. .. 48 26 7 .. .. .. -2.47 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 335-142641 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 16 20.3249 DE: -23 09 34.320 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 16 20.3249 DE: -23 09 34.320 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.7 * B mag [mag]: 13.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (376) Geometria asteroid class: approx. diameter [km]: 36 approx. diameter ["]: 0.028 distance from Earth [AU]: 1.76410 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#101 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): 0.026", 0.003", 83.117° remarks: * orbital elements for (376)Geometria : Mean anomaly = 32.6757655472 deg Arg. of pericenter = 316.5542866065 deg Long. of node = 301.9513772976 deg Inclination = 5.4304317370 deg Eccentricity = 0.1726222443 Semimajor axis = 2.2882432869 AU Perihelion dist = 1.8932415953 AU Mag: H = 9.52, G = 0.15 Epoch of elements : MJD 60582.87851013 TDT (2024 Sep 29.8785) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1012023Apr24,1.58,2024,9,29,21.084246,-0.089811,0.734385,12.711108,1.549333,0.005247,0.000162,0.000000,0.000000 -50.9183,-23.1520,-138.76,-2.86,False UCAC4 335-142641,18.27231252,-23.1595332,13.01,11.73,11.04,0.1,0,,18.29730045,-23.1519553,1.99,2.20,0,0,1 376,Geometria,13.54,35.853,1.7641,0,0,4.594,7.72,,2.0,0 0,32.4256,2024,9,29,316.5543,301.9514,5.4304,0.17262,2.28824,1.89324,9.51,5.0,0.15 1.118,0.0260,0.0033,83,0.0033,Known errors,0.72,0,-1,-1 20240929_142641,60140.60 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org