IOTA/IOTA-ES occultation update for (4281) Pounds / UCAC4 561-016472 event on 2024 Nov 22, 14:12 UT Visible from Summary ------- On 2024 Nov 22 UT, the 10.2979622433291 km diameter asteroid (4281) Pounds will occult a 11.4 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.50 mag to 16.92 mag (the magnitude of the asteroid) for at most 1.340 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 Nov 22, 14:03 - 2024 Nov 22, 14:21 * geocentric midpoint of event [JD]: 2460637.09176005 * magnitude of target star: 11.43 * magnitude drop [mag]: 5.50 * estimated maximum duration [s]: 1.340 * Moon: 55 % sunlit, 62° distance * Sun: 158° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 3.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.028, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.028", 0.001", 87°) * approx speed of asteroid's shadow [km/s]: 7.7663 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 561-016472 by 4281 Pounds on 2024 Nov 22 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 105 0 0 -50 24 28 14 20 39.4 1 53 -12 -50 18 47 -50 30 9 -50 17 15 -50 31 42 .... 106 0 0 -49 56 20 14 20 39.2 1 52 -13 -49 50 41 -50 2 1 -49 49 9 -50 3 33 0.70 107 0 0 -49 28 13 14 20 38.6 2 52 -14 -49 22 35 -49 33 53 -49 21 3 -49 35 24 0.92 108 0 0 -49 0 7 14 20 37.9 3 51 -15 -48 54 30 -49 5 45 -48 52 59 -49 7 17 1.02 109 0 0 -48 32 3 14 20 36.8 4 50 -15 -48 26 27 -48 37 40 -48 24 56 -48 39 11 1.08 110 0 0 -48 4 2 14 20 35.5 5 49 -16 -47 58 27 -48 9 38 -47 56 57 -48 11 9 1.12 111 0 0 -47 36 5 14 20 33.9 5 49 -17 -47 30 32 -47 41 40 -47 29 2 -47 43 10 1.14 112 0 0 -47 8 14 14 20 32.1 6 48 -18 -47 2 41 -47 13 47 -47 1 12 -47 15 17 1.16 113 0 0 -46 40 29 14 20 30.0 7 47 -18 -46 34 58 -46 46 1 -46 33 28 -46 47 30 1.18 114 0 0 -46 12 51 14 20 27.6 8 47 -19 -46 7 21 -46 18 21 -46 5 52 -46 19 51 1.19 115 0 0 -45 45 21 14 20 24.9 9 46 -20 -45 39 53 -45 50 50 -45 38 24 -45 52 19 1.20 116 0 0 -45 18 0 14 20 21.9 9 45 -21 -45 12 33 -45 23 28 -45 11 5 -45 24 57 1.21 117 0 0 -44 50 50 14 20 18.7 10 44 -21 -44 45 24 -44 56 16 -44 43 56 -44 57 44 1.21 118 0 0 -44 23 50 14 20 15.2 11 44 -22 -44 18 26 -44 29 15 -44 16 59 -44 30 43 1.22 119 0 0 -43 57 3 14 20 11.4 12 43 -23 -43 51 40 -44 2 26 -43 50 13 -44 3 54 1.22 120 0 0 -43 30 28 14 20 7.4 13 42 -23 -43 25 7 -43 35 50 -43 23 40 -43 37 17 1.23 121 0 0 -43 4 7 14 20 3.1 13 41 -24 -42 58 47 -43 9 27 -42 57 21 -43 10 54 1.23 122 0 0 -42 38 0 14 19 58.5 14 41 -25 -42 32 42 -42 43 19 -42 31 16 -42 44 46 1.23 123 0 0 -42 12 8 14 19 53.6 15 40 -25 -42 6 51 -42 17 26 -42 5 26 -42 18 52 1.24 124 0 0 -41 46 33 14 19 48.5 16 39 -26 -41 41 17 -41 51 49 -41 39 52 -41 53 15 1.24 125 0 0 -41 21 14 14 19 43.1 17 39 -27 -41 16 0 -41 26 29 -41 14 35 -41 27 54 1.24 126 0 0 -40 56 13 14 19 37.4 17 38 -27 -40 51 0 -41 1 26 -40 49 36 -41 2 51 1.24 127 0 0 -40 31 30 14 19 31.5 18 37 -28 -40 26 18 -40 36 42 -40 24 54 -40 38 6 1.24 128 0 0 -40 7 5 14 19 25.3 19 36 -28 -40 1 55 -40 12 16 -40 0 32 -40 13 40 1.25 129 0 0 -39 43 1 14 19 18.9 20 36 -29 -39 37 52 -39 48 10 -39 36 29 -39 49 33 1.25 130 0 0 -39 19 16 14 19 12.2 20 35 -30 -39 14 9 -39 24 24 -39 12 46 -39 25 47 1.25 131 0 0 -38 55 52 14 19 5.3 21 34 -30 -38 50 46 -39 0 58 -38 49 23 -39 2 21 1.25 132 0 0 -38 32 49 14 18 58.1 22 33 -31 -38 27 44 -38 37 54 -38 26 22 -38 39 16 1.25 133 0 0 -38 10 7 14 18 50.7 23 32 -31 -38 5 4 -38 15 11 -38 3 42 -38 16 33 1.25 134 0 0 -37 47 48 14 18 43.1 23 32 -32 -37 42 47 -37 52 51 -37 41 25 -37 54 13 1.25 135 0 0 -37 25 52 14 18 35.3 24 31 -32 -37 20 52 -37 30 54 -37 19 31 -37 32 15 1.25 136 0 0 -37 4 19 14 18 27.2 25 30 -32 -36 59 20 -37 9 19 -36 57 59 -37 10 40 1.25 137 0 0 -36 43 10 14 18 18.9 26 29 -33 -36 38 12 -36 48 9 -36 36 51 -36 49 29 1.25 138 0 0 -36 22 25 14 18 10.5 26 28 -33 -36 17 28 -36 27 22 -36 16 8 -36 28 43 1.25 139 0 0 -36 2 4 14 18 1.8 27 28 -34 -35 57 9 -36 7 0 -35 55 49 -36 8 21 1.25 140 0 0 -35 42 9 14 17 52.9 27 27 -34 -35 37 14 -35 47 4 -35 35 55 -35 48 23 1.25 141 0 0 -35 22 38 14 17 43.8 28 26 -34 -35 17 45 -35 27 32 -35 16 26 -35 28 52 1.25 142 0 0 -35 3 34 14 17 34.6 29 25 -35 -34 58 41 -35 8 26 -34 57 23 -35 9 46 1.25 143 0 0 -34 44 55 14 17 25.1 29 24 -35 -34 40 4 -34 49 47 -34 38 45 -34 51 5 1.25 144 0 0 -34 26 42 14 17 15.5 30 23 -35 -34 21 52 -34 31 33 -34 20 34 -34 32 52 1.25 145 0 0 -34 8 57 14 17 5.7 31 22 -36 -34 4 8 -34 13 46 -34 2 50 -34 15 4 1.25 146 0 0 -33 51 38 14 16 55.8 31 21 -36 -33 46 50 -33 56 26 -33 45 32 -33 57 44 1.25 147 0 0 -33 34 46 14 16 45.7 32 21 -36 -33 29 59 -33 39 33 -33 28 42 -33 40 51 1.25 148 0 0 -33 18 21 14 16 35.5 32 20 -36 -33 13 35 -33 23 8 -33 12 18 -33 24 25 1.25 149 0 0 -33 2 25 14 16 25.1 33 19 -36 -32 57 40 -33 7 10 -32 56 23 -33 8 27 1.25 150 0 0 -32 46 56 14 16 14.5 33 18 -37 -32 42 12 -32 51 40 -32 40 55 -32 52 57 1.25 151 0 0 -32 31 55 14 16 3.9 34 17 -37 -32 27 12 -32 36 39 -32 25 55 -32 37 56 1.25 152 0 0 -32 17 23 14 15 53.1 34 16 -37 -32 12 40 -32 22 6 -32 11 24 -32 23 22 1.25 153 0 0 -32 3 19 14 15 42.2 35 15 -37 -31 58 37 -32 8 1 -31 57 21 -32 9 17 1.25 154 0 0 -31 49 44 14 15 31.2 35 14 -37 -31 45 3 -31 54 25 -31 43 47 -31 55 41 1.25 155 0 0 -31 36 37 14 15 20.1 35 13 -37 -31 31 57 -31 41 18 -31 30 41 -31 42 33 1.25 156 0 0 -31 23 59 14 15 8.9 36 12 -37 -31 19 20 -31 28 39 -31 18 5 -31 29 55 1.25 157 0 0 -31 11 51 14 14 57.6 36 11 -37 -31 7 12 -31 16 30 -31 5 57 -31 17 46 1.25 158 0 0 -31 0 12 14 14 46.2 36 10 -37 -30 55 34 -31 4 50 -30 54 19 -31 6 6 1.25 159 0 0 -30 49 2 14 14 34.7 37 8 -37 -30 44 25 -30 53 40 -30 43 10 -30 54 55 1.25 160 0 0 -30 38 22 14 14 23.2 37 7 -37 -30 33 45 -30 42 59 -30 32 30 -30 44 14 1.25 161 0 0 -30 28 11 14 14 11.6 37 6 -36 -30 23 35 -30 32 48 -30 22 21 -30 34 2 1.25 162 0 0 -30 18 30 14 13 59.9 38 5 -36 -30 13 55 -30 23 6 -30 12 40 -30 24 21 1.25 163 0 0 -30 9 19 14 13 48.2 38 4 -36 -30 4 44 -30 13 55 -30 3 30 -30 15 9 1.25 164 0 0 -30 0 38 14 13 36.4 38 3 -36 -29 56 4 -30 5 13 -29 54 50 -30 6 28 1.25 165 0 0 -29 52 27 14 13 24.6 38 2 -36 -29 47 53 -29 57 2 -29 46 39 -29 58 16 1.25 166 0 0 -29 44 47 14 13 12.7 38 1 -35 -29 40 13 -29 49 21 -29 38 59 -29 50 35 1.25 167 0 0 -29 37 36 14 13 0.8 38 360 -35 -29 33 3 -29 42 10 -29 31 49 -29 43 24 1.25 168 0 0 -29 30 55 14 12 48.9 39 359 -35 -29 26 23 -29 35 29 -29 25 9 -29 36 43 1.25 169 0 0 -29 24 45 14 12 37.0 39 357 -35 -29 20 13 -29 29 18 -29 18 59 -29 30 32 1.25 170 0 0 -29 19 6 14 12 25.1 39 356 -34 -29 14 34 -29 23 39 -29 13 20 -29 24 52 1.25 171 0 0 -29 13 57 14 12 13.1 39 355 -34 -29 9 25 -29 18 29 -29 8 12 -29 19 43 1.25 172 0 0 -29 9 18 14 12 1.2 39 354 -34 -29 4 47 -29 13 50 -29 3 33 -29 15 4 1.25 173 0 0 -29 5 10 14 11 49.2 39 353 -33 -29 0 39 -29 9 42 -28 59 26 -29 10 56 1.25 174 0 0 -29 1 33 14 11 37.3 39 352 -33 -28 57 2 -29 6 5 -28 55 49 -29 7 18 1.25 175 0 0 -28 58 27 14 11 25.4 38 351 -32 -28 53 56 -29 2 58 -28 52 43 -29 4 12 1.25 176 0 0 -28 55 51 14 11 13.5 38 350 -32 -28 51 20 -29 0 22 -28 50 7 -29 1 36 1.25 177 0 0 -28 53 46 14 11 1.6 38 348 -31 -28 49 15 -28 58 17 -28 48 2 -28 59 30 1.25 178 0 0 -28 52 12 14 10 49.8 38 347 -31 -28 47 41 -28 56 43 -28 46 28 -28 57 56 1.25 179 0 0 -28 51 8 14 10 38.0 38 346 -30 -28 46 38 -28 55 39 -28 45 25 -28 56 53 1.25 180 0 0 -28 50 36 14 10 26.3 38 345 -30 -28 46 5 -28 55 7 -28 44 52 -28 56 20 1.25 -179 0 0 -28 50 34 14 10 14.6 38 344 -29 -28 46 3 -28 55 5 -28 44 50 -28 56 19 1.25 -178 0 0 -28 51 4 14 10 3.0 37 343 -29 -28 46 33 -28 55 35 -28 45 20 -28 56 48 1.25 -177 0 0 -28 52 4 14 9 51.4 37 342 -28 -28 47 33 -28 56 36 -28 46 20 -28 57 49 1.25 -176 0 0 -28 53 36 14 9 39.9 37 341 -28 -28 49 5 -28 58 7 -28 47 52 -28 59 21 1.25 -175 0 0 -28 55 38 14 9 28.5 36 340 -27 -28 51 7 -29 0 9 -28 49 54 -29 1 23 1.26 -174 0 0 -28 58 11 14 9 17.2 36 339 -26 -28 53 40 -29 2 43 -28 52 27 -29 3 56 1.26 -173 0 0 -29 1 15 14 9 5.9 36 338 -26 -28 56 44 -29 5 47 -28 55 31 -29 7 1 1.26 -172 0 0 -29 4 51 14 8 54.8 35 337 -25 -29 0 19 -29 9 23 -28 59 6 -29 10 36 1.26 -171 0 0 -29 8 57 14 8 43.7 35 336 -25 -29 4 25 -29 13 29 -29 3 11 -29 14 43 1.26 -170 0 0 -29 13 34 14 8 32.7 35 335 -24 -29 9 2 -29 18 7 -29 7 48 -29 19 21 1.26 -169 0 0 -29 18 42 14 8 21.9 34 334 -23 -29 14 10 -29 23 15 -29 12 56 -29 24 29 1.26 -168 0 0 -29 24 21 14 8 11.2 34 333 -23 -29 19 48 -29 28 55 -29 18 35 -29 30 9 1.26 -167 0 0 -29 30 32 14 8 0.6 33 332 -22 -29 25 58 -29 35 5 -29 24 45 -29 36 19 1.26 -166 0 0 -29 37 13 14 7 50.1 33 331 -21 -29 32 39 -29 41 47 -29 31 25 -29 43 1 1.26 -165 0 0 -29 44 25 14 7 39.8 32 330 -20 -29 39 50 -29 48 59 -29 38 36 -29 50 14 1.26 -164 0 0 -29 52 7 14 7 29.6 32 329 -20 -29 47 33 -29 56 42 -29 46 18 -29 57 57 1.26 -163 0 0 -30 0 21 14 7 19.5 31 328 -19 -29 55 46 -30 4 57 -29 54 31 -30 6 11 1.27 -162 0 0 -30 9 5 14 7 9.6 31 328 -18 -30 4 29 -30 13 41 -30 3 15 -30 14 56 1.27 -161 0 0 -30 18 20 14 6 59.9 30 327 -17 -30 13 44 -30 22 57 -30 12 29 -30 24 12 1.27 -160 0 0 -30 28 6 14 6 50.3 29 326 -17 -30 23 29 -30 32 44 -30 22 14 -30 33 59 1.27 -159 0 0 -30 38 22 14 6 40.9 29 325 -16 -30 33 45 -30 43 0 -30 32 30 -30 44 16 1.27 -158 0 0 -30 49 9 14 6 31.6 28 324 -15 -30 44 31 -30 53 48 -30 43 16 -30 55 3 1.27 -157 0 0 -31 0 27 14 6 22.6 27 324 -14 -30 55 48 -31 5 6 -30 54 32 -31 6 22 1.27 -156 0 0 -31 12 14 14 6 13.7 27 323 -14 -31 7 34 -31 16 54 -31 6 19 -31 18 10 1.27 -155 0 0 -31 24 32 14 6 5.0 26 322 -13 -31 19 51 -31 29 13 -31 18 36 -31 30 29 1.28 -154 0 0 -31 37 20 14 5 56.5 25 321 -12 -31 32 39 -31 42 2 -31 31 23 -31 43 18 1.28 -153 0 0 -31 50 38 14 5 48.2 25 321 -11 -31 45 56 -31 55 20 -31 44 40 -31 56 37 1.28 -152 0 0 -32 4 26 14 5 40.1 24 320 -10 -31 59 43 -32 9 9 -31 58 27 -32 10 26 1.28 -151 0 0 -32 18 43 14 5 32.3 23 319 -10 -32 14 0 -32 23 28 -32 12 43 -32 24 45 1.28 -150 0 0 -32 33 31 14 5 24.6 23 318 -9 -32 28 46 -32 38 16 -32 27 29 -32 39 33 1.28 -149 0 0 -32 48 47 14 5 17.2 22 318 -8 -32 44 2 -32 53 33 -32 42 44 -32 54 51 1.28 -148 0 0 -33 4 33 14 5 10.0 21 317 -7 -32 59 46 -33 9 20 -32 58 29 -33 10 38 1.29 -147 0 0 -33 20 48 14 5 3.0 20 316 -6 -33 16 0 -33 25 36 -33 14 43 -33 26 54 1.29 -146 0 0 -33 37 32 14 4 56.3 20 316 -5 -33 32 43 -33 42 21 -33 31 25 -33 43 39 1.29 -145 0 0 -33 54 44 14 4 49.8 19 315 -5 -33 49 54 -33 59 34 -33 48 36 -34 0 53 1.29 -144 0 0 -34 12 25 14 4 43.5 18 314 -4 -34 7 34 -34 17 16 -34 6 15 -34 18 35 1.29 -143 0 0 -34 30 33 14 4 37.5 17 314 -3 -34 25 41 -34 35 26 -34 24 23 -34 36 45 1.29 -142 0 0 -34 49 10 14 4 31.8 17 313 -2 -34 44 17 -34 54 3 -34 42 58 -34 55 23 1.30 -141 0 0 -35 8 14 14 4 26.3 16 312 -1 -35 3 20 -35 13 9 -35 2 0 -35 14 28 1.30 -140 0 0 -35 27 45 14 4 21.1 15 312 0 -35 22 50 -35 32 41 -35 21 30 -35 34 1 1.30 -139 0 0 -35 47 43 14 4 16.2 14 311 1 -35 42 46 -35 52 40 -35 41 26 -35 54 1 1.30 -138 0 0 -36 8 7 14 4 11.5 13 310 2 -36 3 10 -36 13 6 -36 1 49 -36 14 27 1.30 -137 0 0 -36 28 58 14 4 7.1 12 310 2 -36 23 59 -36 33 58 -36 22 38 -36 35 19 1.31 -136 0 0 -36 50 14 14 4 3.0 12 309 3 -36 45 14 -36 55 15 -36 43 53 -36 56 37 1.31 -135 0 0 -37 11 56 14 3 59.2 11 309 4 -37 6 54 -37 16 58 -37 5 33 -37 18 20 1.31 -134 0 0 -37 34 2 14 3 55.6 10 308 5 -37 28 59 -37 39 6 -37 27 37 -37 40 28 1.31 -133 0 0 -37 56 33 14 3 52.4 9 307 6 -37 51 28 -38 1 38 -37 50 6 -38 3 0 1.32 -132 0 0 -38 19 27 14 3 49.4 8 307 7 -38 14 21 -38 24 34 -38 12 59 -38 25 57 1.32 -131 0 0 -38 42 45 14 3 46.7 7 306 8 -38 37 38 -38 47 53 -38 36 15 -38 49 16 1.33 -130 0 0 -39 6 25 14 3 44.3 7 305 8 -39 1 17 -39 11 35 -38 59 54 -39 12 58 1.33 -129 0 0 -39 30 28 14 3 42.3 6 305 9 -39 25 18 -39 35 39 -39 23 54 -39 37 3 1.34 -128 0 0 -39 54 52 14 3 40.5 5 304 10 -39 49 41 -40 0 4 -39 48 16 -40 1 29 1.35 -127 0 0 -40 19 37 14 3 39.0 4 303 11 -40 14 24 -40 24 50 -40 12 59 -40 26 15 1.37 -126 0 0 -40 44 42 14 3 37.8 3 303 12 -40 39 27 -40 49 57 -40 38 3 -40 51 22 1.39 -125 0 0 -41 10 6 14 3 36.9 2 302 13 -41 4 50 -41 15 23 -41 3 25 -41 16 48 1.43 -124 0 0 -41 35 49 14 3 36.3 1 301 13 -41 30 32 -41 41 7 -41 29 7 -41 42 33 1.51 -123 0 0 -42 1 51 14 3 36.1 0 301 14 -41 56 32 -42 7 10 -41 55 6 -42 8 36 1.91 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 561-016472 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 26 34.4232 DE: +22 04 08.039 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 26 34.4232 DE: +22 04 08.039 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * B mag [mag]: 12.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4281) Pounds asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.011 distance from Earth [AU]: 1.28280 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#47 date of fit: 2022 Nov 25 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): 0.028", 0.001", 86.969° remarks: * orbital elements for (4281)Pounds : Mean anomaly = 28.2325074417 deg Arg. of pericenter = 209.7893547109 deg Long. of node = 187.8850066604 deg Inclination = 0.7305241996 deg Eccentricity = 0.1116026906 Semimajor axis = 2.4642092856 AU Perihelion dist = 2.1891968992 AU Mag: H = 14.01, G = 0.15 Epoch of elements : MJD 60636.59175912 TDT (2024 Nov 22.5918) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472022Nov25,1.34,2024,11,22,14.202241,0.068381,-0.776914,-4.366629,-0.384147,-0.002129,-0.000015,0.000001,0.000000 166.9330,22.0913,-36.46,-20.31,False UCAC4 561-016472,5.44289532,22.0688996,12.51,11.43,10.85,0.1,0,,5.46820483,22.0913263,5.50,5.63,0,0,0 4281,Pounds,16.92,10.391,1.2828,0,0,-2.154,-2.63,,0.8,0 0,28.0817,2024,11,22,209.7894,187.8850,0.7305,0.11160,2.46421,2.18920,14.01,5.0,0.15 1.135,0.0277,0.0012,87,0.0015,Known errors,1.20,0,-1,-1 20241122_016472,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org