IOTA/IOTA-ES occultation update for (3502) Huangpu / UCAC4 333-128089 event on 2024 Oct 09, 13:03 UT Visible from Summary ------- On 2024 Oct 09 UT, the 21.9238379771246 km diameter asteroid (3502) Huangpu will occult a 11.2 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 6.11 mag to 17.32 mag (the magnitude of the asteroid) for at most 0.790 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 Oct 09, 13:00 - 2024 Oct 09, 13:05 * geocentric midpoint of event [JD]: 2460593.04394591 * magnitude of target star: 11.21 * magnitude drop [mag]: 6.11 * estimated maximum duration [s]: 0.790 * Moon: 38 % sunlit, 7° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 33 * 1 sigma uncertainty interval [path widths]: +/- 0.27 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.003", 94°) * approx speed of asteroid's shadow [km/s]: 27.9262 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 333-128089 by 3502 Huangpu on 2024 Oct 9 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 - 9 0 0 45 22 19 13 0 45.5 1 125 37 45 11 25 45 33 16 45 5 37 45 39 8 .... - 8 0 0 44 52 56 13 0 45.6 1 126 38 44 42 4 45 3 52 44 36 17 45 9 42 -0.58 - 7 0 0 44 23 36 13 0 45.7 2 127 38 44 12 45 44 34 29 44 7 0 44 40 18 -0.79 - 6 0 0 43 54 18 13 0 46.0 3 127 38 43 43 30 44 5 9 43 37 45 44 10 57 -0.88 - 5 0 0 43 25 5 13 0 46.3 4 128 39 43 14 18 43 35 54 43 8 35 43 41 41 -0.93 - 4 0 0 42 55 56 13 0 46.7 5 129 39 42 45 13 43 6 43 42 39 30 43 12 29 -0.96 - 3 0 0 42 26 55 13 0 47.1 6 129 39 42 16 13 42 37 39 42 10 32 42 43 24 -0.99 - 2 0 0 41 58 0 13 0 47.7 7 130 39 41 47 21 42 8 42 41 41 41 42 14 26 -1.00 - 1 0 0 41 29 14 13 0 48.4 7 131 39 41 18 37 41 39 54 41 12 58 41 45 36 -1.02 0 0 0 41 0 37 13 0 49.1 8 131 40 40 50 3 41 11 15 40 44 25 41 16 56 -1.03 1 0 0 40 32 11 13 0 49.9 9 132 40 40 21 39 40 42 46 40 16 2 40 48 26 -1.04 2 0 0 40 3 56 13 0 50.8 10 133 40 39 53 26 40 14 29 39 47 51 40 20 7 -1.04 3 0 0 39 35 54 13 0 51.8 11 133 40 39 25 26 39 46 24 39 19 52 39 52 1 -1.05 4 0 0 39 8 5 13 0 52.9 12 134 40 38 57 39 39 18 33 38 52 7 39 24 8 -1.06 5 0 0 38 40 30 13 0 54.0 13 135 40 38 30 7 38 50 55 38 24 36 38 56 30 -1.06 6 0 0 38 13 10 13 0 55.3 14 135 40 38 2 50 38 23 33 37 57 20 38 29 6 -1.06 7 0 0 37 46 7 13 0 56.6 15 136 40 37 35 48 37 56 27 37 30 20 38 1 59 -1.07 8 0 0 37 19 20 13 0 58.0 15 137 40 37 9 4 37 29 38 37 3 37 37 35 9 -1.07 9 0 0 36 52 52 13 0 59.5 16 138 40 36 42 38 37 3 7 36 37 12 37 8 36 -1.07 10 0 0 36 26 42 13 1 1.1 17 138 39 36 16 31 36 36 55 36 11 6 36 42 23 -1.08 11 0 0 36 0 52 13 1 2.7 18 139 39 35 50 43 36 11 3 35 45 20 36 16 29 -1.08 12 0 0 35 35 22 13 1 4.5 19 140 39 35 25 16 35 45 30 35 19 53 35 50 56 -1.08 13 0 0 35 10 13 13 1 6.3 20 140 39 35 0 9 35 20 19 34 54 48 35 25 43 -1.08 14 0 0 34 45 27 13 1 8.2 21 141 39 34 35 25 34 55 30 34 30 5 35 0 53 -1.09 15 0 0 34 21 2 13 1 10.2 21 142 38 34 11 3 34 31 4 34 5 45 34 36 25 -1.09 16 0 0 33 57 2 13 1 12.2 22 143 38 33 47 5 34 7 1 33 41 48 34 12 21 -1.09 17 0 0 33 33 25 13 1 14.4 23 143 38 33 23 31 33 43 22 33 18 14 33 48 41 -1.09 18 0 0 33 10 13 13 1 16.6 24 144 37 33 0 21 33 20 8 32 55 6 33 25 25 -1.09 19 0 0 32 47 27 13 1 18.9 25 145 37 32 37 36 32 57 19 32 32 23 33 2 35 -1.09 20 0 0 32 25 6 13 1 21.2 25 146 37 32 15 18 32 34 56 32 10 5 32 40 11 -1.10 21 0 0 32 3 12 13 1 23.6 26 146 36 31 53 26 32 13 0 31 48 14 32 18 14 -1.10 22 0 0 31 41 45 13 1 26.1 27 147 36 31 32 1 31 51 31 31 26 51 31 56 44 -1.10 23 0 0 31 20 46 13 1 28.7 28 148 35 31 11 4 31 30 29 31 5 55 31 35 41 -1.10 24 0 0 31 0 15 13 1 31.3 28 149 35 30 50 35 31 9 56 30 45 27 31 15 7 -1.10 25 0 0 30 40 12 13 1 34.0 29 150 34 30 30 35 30 49 52 30 25 27 30 55 2 -1.10 26 0 0 30 20 39 13 1 36.8 30 150 34 30 11 3 30 30 17 30 5 57 30 35 25 -1.10 27 0 0 30 1 35 13 1 39.6 31 151 33 29 52 2 30 11 11 29 46 57 30 16 19 -1.10 28 0 0 29 43 2 13 1 42.5 31 152 32 29 33 30 29 52 36 29 28 26 29 57 42 -1.11 29 0 0 29 24 59 13 1 45.4 32 153 32 29 15 29 29 34 31 29 10 26 29 39 37 -1.11 30 0 0 29 7 27 13 1 48.4 33 154 31 28 57 59 29 16 57 28 52 56 29 22 2 -1.11 31 0 0 28 50 26 13 1 51.4 33 155 31 28 40 59 28 59 55 28 35 58 29 4 58 -1.11 32 0 0 28 33 57 13 1 54.5 34 156 30 28 24 32 28 43 24 28 19 31 28 48 27 -1.11 33 0 0 28 18 0 13 1 57.6 35 157 29 28 8 36 28 27 25 28 3 37 28 32 27 -1.11 34 0 0 28 2 35 13 2 0.8 35 158 29 27 53 13 28 11 58 27 48 14 28 16 59 -1.11 35 0 0 27 47 42 13 2 4.0 36 159 28 27 38 22 27 57 5 27 33 24 28 2 5 -1.11 36 0 0 27 33 23 13 2 7.3 36 160 27 27 24 4 27 42 44 27 19 7 27 47 43 -1.11 37 0 0 27 19 37 13 2 10.6 37 161 26 27 10 19 27 28 56 27 5 23 27 33 55 -1.11 38 0 0 27 6 24 13 2 14.0 37 162 26 26 57 8 27 15 42 26 52 12 27 20 40 -1.11 39 0 0 26 53 45 13 2 17.3 38 163 25 26 44 30 27 3 1 26 39 35 27 7 58 -1.11 40 0 0 26 41 39 13 2 20.8 38 164 24 26 32 26 26 50 55 26 27 31 26 55 51 -1.12 41 0 0 26 30 8 13 2 24.2 39 165 23 26 20 56 26 39 22 26 16 2 26 44 18 -1.12 42 0 0 26 19 11 13 2 27.7 39 166 23 26 10 0 26 28 24 26 5 7 26 33 20 -1.12 43 0 0 26 8 49 13 2 31.2 39 167 22 25 59 39 26 18 1 25 54 46 26 22 56 -1.12 44 0 0 25 59 1 13 2 34.7 40 169 21 25 49 52 26 8 12 25 45 0 26 13 6 -1.12 45 0 0 25 49 48 13 2 38.3 40 170 20 25 40 40 25 58 58 25 35 48 26 3 52 -1.12 46 0 0 25 41 10 13 2 41.9 40 171 19 25 32 3 25 50 19 25 27 12 25 55 13 -1.12 47 0 0 25 33 7 13 2 45.5 41 172 18 25 24 1 25 42 16 25 19 10 25 47 9 -1.12 48 0 0 25 25 40 13 2 49.1 41 173 18 25 16 34 25 34 47 25 11 44 25 39 40 -1.12 49 0 0 25 18 48 13 2 52.7 41 175 17 25 9 43 25 27 55 25 4 53 25 32 47 -1.12 50 0 0 25 12 31 13 2 56.4 41 176 16 25 3 26 25 21 37 24 58 37 25 26 29 -1.12 51 0 0 25 6 50 13 3 0.0 41 177 15 24 57 46 25 15 55 24 52 56 25 20 47 -1.12 52 0 0 25 1 44 13 3 3.7 41 178 14 24 52 40 25 10 49 24 47 51 25 15 40 -1.12 53 0 0 24 57 14 13 3 7.4 42 179 13 24 48 11 25 6 18 24 43 22 25 11 9 -1.12 54 0 0 24 53 19 13 3 11.0 42 181 12 24 44 17 25 2 23 24 39 28 25 7 14 -1.12 55 0 0 24 50 1 13 3 14.7 42 182 12 24 40 58 24 59 4 24 36 10 25 3 55 -1.12 56 0 0 24 47 18 13 3 18.4 42 183 11 24 38 16 24 56 21 24 33 28 25 1 11 -1.12 57 0 0 24 45 11 13 3 22.1 42 184 10 24 36 9 24 54 14 24 31 21 24 59 4 -1.12 58 0 0 24 43 40 13 3 25.8 42 186 9 24 34 38 24 52 43 24 29 50 24 57 33 -1.12 59 0 0 24 42 45 13 3 29.4 41 187 8 24 33 43 24 51 48 24 28 55 24 56 38 -1.13 60 0 0 24 42 26 13 3 33.1 41 188 7 24 33 24 24 51 28 24 28 36 24 56 18 -1.13 61 0 0 24 42 42 13 3 36.7 41 189 6 24 33 41 24 51 45 24 28 53 24 56 35 -1.13 62 0 0 24 43 35 13 3 40.4 41 191 5 24 34 34 24 52 38 24 29 46 24 57 28 -1.13 63 0 0 24 45 4 13 3 44.0 41 192 4 24 36 2 24 54 7 24 31 14 24 58 57 -1.13 64 0 0 24 47 8 13 3 47.6 41 193 3 24 38 7 24 56 12 24 33 18 25 1 2 -1.13 65 0 0 24 49 49 13 3 51.2 40 194 3 24 40 47 24 58 52 24 35 58 25 3 43 -1.13 66 0 0 24 53 5 13 3 54.8 40 195 2 24 44 2 25 2 9 24 39 14 25 6 59 -1.13 67 0 0 24 56 57 13 3 58.3 40 197 1 24 47 54 25 6 1 24 43 5 25 10 52 -1.13 68 0 0 25 1 24 13 4 1.9 39 198 0 24 52 21 25 10 29 24 47 32 25 15 20 -1.13 69 0 0 25 6 27 13 4 5.4 39 199 -1 24 57 24 25 15 33 24 52 35 25 20 24 -1.13 70 0 0 25 12 6 13 4 8.8 39 200 -2 25 3 2 25 21 12 24 58 12 25 26 4 -1.13 71 0 0 25 18 20 13 4 12.3 38 201 -3 25 9 15 25 27 27 25 4 26 25 32 19 -1.13 72 0 0 25 25 10 13 4 15.7 38 202 -4 25 16 4 25 34 17 25 11 14 25 39 9 -1.13 73 0 0 25 32 34 13 4 19.1 37 203 -5 25 23 28 25 41 42 25 18 38 25 46 35 -1.13 74 0 0 25 40 34 13 4 22.4 37 204 -6 25 31 27 25 49 43 25 26 36 25 54 36 -1.13 75 0 0 25 49 9 13 4 25.7 36 205 -7 25 40 1 25 58 19 25 35 10 26 3 12 -1.13 76 0 0 25 58 19 13 4 29.0 36 206 -8 25 49 10 26 7 30 25 44 18 26 12 24 -1.13 77 0 0 26 8 3 13 4 32.2 35 207 -9 25 58 53 26 17 15 25 54 1 26 22 10 -1.13 78 0 0 26 18 22 13 4 35.4 35 208 -9 26 9 11 26 27 35 26 4 18 26 32 30 -1.13 79 0 0 26 29 16 13 4 38.5 34 209 -10 26 20 4 26 38 29 26 15 10 26 43 25 -1.13 80 0 0 26 40 43 13 4 41.6 33 210 -11 26 31 30 26 49 58 26 26 36 26 54 55 -1.13 81 0 0 26 52 45 13 4 44.6 33 211 -12 26 43 30 27 2 1 26 38 35 27 6 58 -1.13 82 0 0 27 5 20 13 4 47.6 32 212 -13 26 56 4 27 14 37 26 51 9 27 19 35 -1.13 83 0 0 27 18 28 13 4 50.6 32 213 -14 27 9 11 27 27 47 27 4 15 27 32 45 -1.13 84 0 0 27 32 10 13 4 53.4 31 213 -15 27 22 52 27 41 30 27 17 55 27 46 29 -1.13 85 0 0 27 46 24 13 4 56.3 30 214 -16 27 37 5 27 55 46 27 32 7 28 0 46 -1.13 86 0 0 28 1 11 13 4 59.0 29 215 -17 27 51 50 28 10 34 27 46 52 28 15 35 -1.13 87 0 0 28 16 31 13 5 1.7 29 216 -18 28 7 8 28 25 56 28 2 9 28 30 58 -1.13 88 0 0 28 32 23 13 5 4.4 28 217 -18 28 22 59 28 41 50 28 17 59 28 46 52 -1.13 89 0 0 28 48 47 13 5 7.0 27 217 -19 28 39 21 28 58 15 28 34 20 29 3 19 -1.13 90 0 0 29 5 43 13 5 9.5 26 218 -20 28 56 15 29 15 13 28 51 13 29 20 17 -1.13 91 0 0 29 23 10 13 5 11.9 26 219 -21 29 13 40 29 32 41 29 8 37 29 37 46 -1.13 92 0 0 29 41 7 13 5 14.3 25 220 -22 29 31 36 29 50 40 29 26 32 29 55 46 -1.13 93 0 0 29 59 35 13 5 16.6 24 220 -23 29 50 1 30 9 10 29 44 57 30 14 17 -1.13 94 0 0 30 18 32 13 5 18.8 23 221 -24 30 8 57 30 28 9 30 3 51 30 33 17 -1.13 95 0 0 30 37 59 13 5 21.0 22 222 -24 30 28 22 30 47 38 30 23 16 30 52 47 -1.13 96 0 0 30 57 55 13 5 23.1 22 222 -25 30 48 16 31 7 36 30 43 9 31 12 47 -1.13 97 0 0 31 18 20 13 5 25.1 21 223 -26 31 8 39 31 28 3 31 3 30 31 33 14 -1.13 98 0 0 31 39 12 13 5 27.0 20 224 -27 31 29 30 31 48 57 31 24 20 31 54 10 -1.13 99 0 0 32 0 33 13 5 28.9 19 224 -28 31 50 48 32 10 20 31 45 37 32 15 33 -1.13 100 0 0 32 22 20 13 5 30.7 18 225 -28 32 12 33 32 32 9 32 7 20 32 37 24 -1.13 101 0 0 32 44 33 13 5 32.4 17 226 -29 32 34 44 32 54 25 32 29 31 32 59 41 -1.13 102 0 0 33 7 13 13 5 34.0 17 226 -30 32 57 21 33 17 7 32 52 7 33 22 24 -1.13 103 0 0 33 30 18 13 5 35.5 16 227 -31 33 20 24 33 40 14 33 15 8 33 45 32 -1.14 104 0 0 33 53 47 13 5 36.9 15 228 -31 33 43 51 34 3 45 33 38 34 34 9 5 -1.14 105 0 0 34 17 40 13 5 38.3 14 228 -32 34 7 42 34 27 41 34 2 24 34 33 2 -1.14 106 0 0 34 41 57 13 5 39.6 13 229 -33 34 31 56 34 52 0 34 26 37 34 57 22 -1.14 107 0 0 35 6 36 13 5 40.8 12 230 -33 34 56 33 35 16 41 34 51 13 35 22 5 -1.14 108 0 0 35 31 37 13 5 41.9 11 230 -34 35 21 32 35 41 44 35 16 10 35 47 9 -1.14 109 0 0 35 56 59 13 5 42.9 10 231 -35 35 46 51 36 7 9 35 41 28 36 12 35 -1.14 110 0 0 36 22 41 13 5 43.9 9 231 -35 36 12 31 36 32 53 36 7 7 36 38 21 -1.15 111 0 0 36 48 43 13 5 44.7 9 232 -36 36 38 31 36 58 58 36 33 5 37 4 26 -1.15 112 0 0 37 15 3 13 5 45.5 8 233 -37 37 4 49 37 25 21 36 59 22 37 30 50 -1.15 113 0 0 37 41 42 13 5 46.1 7 233 -37 37 31 25 37 52 1 37 25 57 37 57 33 -1.16 114 0 0 38 8 37 13 5 46.7 6 234 -38 37 58 18 38 18 59 37 52 49 38 24 32 -1.16 115 0 0 38 35 49 13 5 47.2 5 235 -38 38 25 27 38 46 14 38 19 57 38 51 47 -1.17 116 0 0 39 3 16 13 5 47.6 4 235 -39 38 52 52 39 13 43 38 47 20 39 19 18 -1.18 117 0 0 39 30 58 13 5 48.0 3 236 -39 39 20 31 39 41 27 39 14 58 39 47 3 -1.20 118 0 0 39 58 52 13 5 48.2 2 236 -40 39 48 23 40 9 24 39 42 49 40 15 2 -1.23 119 0 0 40 27 0 13 5 48.4 1 237 -40 40 16 28 40 37 34 40 10 53 40 43 13 -1.31 120 0 0 40 55 18 13 5 48.4 0 238 -40 40 44 45 41 5 55 40 39 8 41 11 35 -1.73 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 333-128089 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 49 50.9971 DE: -23 35 43.500 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 49 50.9969 DE: -23 35 43.500 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 12.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3502) Huangpu asteroid class: approx. diameter [km]: 22 approx. diameter ["]: 0.011 distance from Earth [AU]: 2.78740 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 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): 0.022", 0.003", 94.489° remarks: * orbital elements for (3502)Huangpu : Mean anomaly = 340.8041149888 deg Arg. of pericenter = 211.0149652311 deg Long. of node = 104.8737950082 deg Inclination = 2.8193763523 deg Eccentricity = 0.1711048614 Semimajor axis = 3.1358604742 AU Perihelion dist = 2.5992995023 AU Mag: H = 11.96, G = 0.15 Epoch of elements : MJD 60592.54394563 TDT (2024 Oct 09.5439) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr24,0.79,2024,10,9,13.054702,0.035249,0.745488,15.744801,-0.743475,0.005409,-0.000084,-0.000001,0.000000 53.3760,-23.6037,-19.04,-6.58,False UCAC4 333-128089,17.83083256,-23.5954167,11.96,11.21,10.81,0.1,0,,17.85580835,-23.6036576,6.11,6.07,0,0,0 3502,Huangpu,17.32,22.126,2.7874,0,0,3.615,-2.34,,1.8,0 0,340.7076,2024,10,9,211.0150,104.8738,2.8194,0.17110,3.13586,2.59930,11.95,5.0,0.15 1.266,0.0220,0.0028,94,0.0029,Known errors,0.90,0,-1,-1 20241009_128089,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:56 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org