IOTA/IOTA-ES occultation update for (43) Ariadne / UCAC4 555-027524 event on 2023 Feb 16, 10:46 UT Visible from New Zealand, Australia Summary ------- On 2023 Feb 16 UT, the 60.8 km diameter asteroid (43) Ariadne will occult a 9.8 mag star in the constellation Gemini for observers along a path across New Zealand, Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.67 mag to 12.32 mag (the magnitude of the asteroid) for at most 18.710 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 16, 10:27 - 2023 Feb 16, 11:06 * geocentric midpoint of event [JD]: 2459991.94937375 * magnitude of target star: 9.75 * magnitude drop [mag]: 2.67 * estimated maximum duration [s]: 18.710 * Moon: 21 % sunlit, 172° distance * Sun: 129° distance * rough path description: New Zealand, Australia The occultation path -------------------- * approximate projected width [km]: 110 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 4.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 95°) * approx speed of asteroid's shadow [km/s]: 3.2504 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 555-027524 by 43 Ariadne on 2023 Feb 16 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 83 0 0 .. .. .... .. .. .. .. .. .. -50 56 58 .. .. .. -50 54 6 .. .. .. .... 84 0 0 -51 8 28 11 5 6.0 1 54 24 -50 30 59 -51 46 43 -50 28 7 -51 49 42 .... 85 0 0 -50 42 28 11 5 5.2 2 54 24 -50 5 11 -51 20 30 -50 2 20 -51 23 28 1.01 86 0 0 -50 16 40 11 5 3.7 2 53 23 -49 39 36 -50 54 30 -49 36 46 -50 57 27 1.21 87 0 0 -49 51 6 11 5 1.6 3 52 22 -49 14 14 -50 28 43 -49 11 25 -50 31 39 1.31 88 0 0 -49 25 46 11 4 58.8 4 51 22 -48 49 7 -50 3 10 -48 46 19 -50 6 5 1.37 89 0 0 -49 0 42 11 4 55.4 5 51 21 -48 24 14 -49 37 52 -48 21 28 -49 40 46 1.41 90 0 0 -48 35 53 11 4 51.3 5 50 21 -47 59 38 -49 12 51 -47 56 52 -49 15 43 1.44 91 0 0 -48 11 21 11 4 46.6 6 49 20 -47 35 19 -48 48 6 -47 32 34 -48 50 58 1.46 92 0 0 -47 47 7 11 4 41.3 7 48 19 -47 11 16 -48 23 38 -47 8 32 -48 26 29 1.47 93 0 0 -47 23 10 11 4 35.3 8 48 19 -46 47 32 -47 59 29 -46 44 49 -48 2 19 1.48 94 0 0 -46 59 33 11 4 28.7 8 47 18 -46 24 6 -47 35 38 -46 21 24 -47 38 27 1.49 95 0 0 -46 36 14 11 4 21.5 9 46 17 -46 1 0 -47 12 7 -45 58 18 -47 14 55 1.50 96 0 0 -46 13 15 11 4 13.7 10 45 17 -45 38 13 -46 48 56 -45 35 32 -46 51 43 1.51 97 0 0 -45 50 37 11 4 5.3 11 45 16 -45 15 46 -46 26 5 -45 13 6 -46 28 51 1.51 98 0 0 -45 28 19 11 3 56.2 11 44 15 -44 53 40 -46 3 36 -44 51 1 -46 6 21 1.52 99 0 0 -45 6 23 11 3 46.6 12 43 15 -44 31 55 -45 41 28 -44 29 17 -45 44 12 1.52 100 0 0 -44 44 49 11 3 36.4 13 42 14 -44 10 32 -45 19 42 -44 7 55 -45 22 24 1.53 101 0 0 -44 23 36 11 3 25.6 14 42 13 -43 49 30 -44 58 18 -43 46 54 -45 1 0 1.53 102 0 0 -44 2 47 11 3 14.2 14 41 13 -43 28 52 -44 37 17 -43 26 16 -44 39 58 1.53 103 0 0 -43 42 20 11 3 2.3 15 40 12 -43 8 35 -44 16 39 -43 6 1 -44 19 19 1.53 104 0 0 -43 22 16 11 2 49.8 16 40 11 -42 48 42 -43 56 24 -42 46 8 -43 59 4 1.53 105 0 0 -43 2 36 11 2 36.8 16 39 10 -42 29 12 -43 36 33 -42 26 39 -43 39 12 1.53 106 0 0 -42 43 20 11 2 23.2 17 38 10 -42 10 6 -43 17 7 -42 7 34 -43 19 45 1.53 107 0 0 -42 24 28 11 2 9.1 18 37 9 -41 51 24 -42 58 5 -41 48 52 -43 0 41 1.53 108 0 0 -42 6 0 11 1 54.6 18 37 8 -41 33 6 -42 39 27 -41 30 35 -42 42 3 1.53 109 0 0 -41 47 57 11 1 39.5 19 36 7 -41 15 12 -42 21 14 -41 12 42 -42 23 49 1.53 110 0 0 -41 30 19 11 1 23.9 20 35 7 -40 57 43 -42 3 26 -40 55 13 -42 6 1 1.53 111 0 0 -41 13 5 11 1 7.9 20 34 6 -40 40 38 -41 46 4 -40 38 9 -41 48 37 1.53 112 0 0 -40 56 17 11 0 51.4 21 33 5 -40 23 58 -41 29 6 -40 21 30 -41 31 39 1.53 113 0 0 -40 39 54 11 0 34.5 22 33 5 -40 7 44 -41 12 35 -40 5 16 -41 15 7 1.53 114 0 0 -40 23 57 11 0 17.1 22 32 4 -39 51 55 -40 56 29 -39 49 28 -40 59 0 1.53 115 0 0 -40 8 25 10 59 59.3 23 31 3 -39 36 31 -40 40 49 -39 34 4 -40 43 20 1.53 116 0 0 -39 53 19 10 59 41.1 23 30 2 -39 21 32 -40 25 35 -39 19 7 -40 28 5 1.53 117 0 0 -39 38 39 10 59 22.5 24 30 2 -39 7 0 -40 10 47 -39 4 34 -40 13 16 1.53 118 0 0 -39 24 25 10 59 3.5 24 29 1 -38 52 53 -39 56 25 -38 50 28 -39 58 54 1.53 119 0 0 -39 10 36 10 58 44.1 25 28 0 -38 39 11 -39 42 29 -38 36 47 -39 44 58 1.53 120 0 0 -38 57 14 10 58 24.4 25 27 -1 -38 25 56 -39 29 0 -38 23 32 -39 31 28 1.53 121 0 0 -38 44 18 10 58 4.3 26 26 -1 -38 13 7 -39 15 58 -38 10 44 -39 18 25 1.53 122 0 0 -38 31 49 10 57 43.9 26 25 -2 -38 0 43 -39 3 21 -37 58 21 -39 5 49 1.52 123 0 0 -38 19 46 10 57 23.1 27 25 -3 -37 48 46 -38 51 12 -37 46 24 -38 53 38 1.52 124 0 0 -38 8 9 10 57 2.1 27 24 -4 -37 37 15 -38 39 29 -37 34 53 -38 41 55 1.52 125 0 0 -37 56 58 10 56 40.7 28 23 -4 -37 26 10 -38 28 13 -37 23 49 -38 30 38 1.52 126 0 0 -37 46 14 10 56 19.0 28 22 -5 -37 15 31 -38 17 23 -37 13 10 -38 19 48 1.52 127 0 0 -37 35 57 10 55 57.1 29 21 -6 -37 5 19 -38 7 0 -37 2 58 -38 9 25 1.52 128 0 0 -37 26 6 10 55 34.9 29 20 -7 -36 55 33 -37 57 4 -36 53 13 -37 59 29 1.52 129 0 0 -37 16 41 10 55 12.5 30 19 -7 -36 46 13 -37 47 35 -36 43 53 -37 49 59 1.52 130 0 0 -37 7 44 10 54 49.8 30 18 -8 -36 37 20 -37 38 33 -36 35 0 -37 40 56 1.52 131 0 0 -36 59 12 10 54 26.9 30 17 -9 -36 28 53 -37 29 57 -36 26 34 -37 32 20 1.52 132 0 0 -36 51 8 10 54 3.8 31 17 -10 -36 20 52 -37 21 48 -36 18 33 -37 24 11 1.52 133 0 0 -36 43 30 10 53 40.4 31 16 -10 -36 13 18 -37 14 7 -36 10 59 -37 16 29 1.51 134 0 0 -36 36 19 10 53 16.9 31 15 -11 -36 6 10 -37 6 52 -36 3 52 -37 9 14 1.51 135 0 0 -36 29 34 10 52 53.2 32 14 -12 -35 59 29 -37 0 4 -35 57 11 -37 2 26 1.51 136 0 0 -36 23 16 10 52 29.4 32 13 -12 -35 53 14 -36 53 42 -35 50 56 -36 56 4 1.51 137 0 0 -36 17 25 10 52 5.3 32 12 -13 -35 47 25 -36 47 48 -35 45 7 -36 50 10 1.51 138 0 0 -36 12 0 10 51 41.2 32 11 -14 -35 42 3 -36 42 21 -35 39 46 -36 44 42 1.51 139 0 0 -36 7 2 10 51 16.9 32 10 -14 -35 37 8 -36 37 20 -35 34 51 -36 39 42 1.51 140 0 0 -36 2 31 10 50 52.5 33 9 -15 -35 32 39 -36 32 47 -35 30 22 -36 35 8 1.51 141 0 0 -35 58 27 10 50 28.0 33 8 -16 -35 28 37 -36 28 41 -35 26 20 -36 31 1 1.51 142 0 0 -35 54 49 10 50 3.4 33 7 -16 -35 25 1 -36 25 1 -35 22 44 -36 27 22 1.51 143 0 0 -35 51 38 10 49 38.7 33 6 -17 -35 21 51 -36 21 48 -35 19 34 -36 24 9 1.51 144 0 0 -35 48 54 10 49 13.9 33 5 -18 -35 19 8 -36 19 3 -35 16 52 -36 21 23 1.51 145 0 0 -35 46 36 10 48 49.1 33 4 -18 -35 16 52 -36 16 44 -35 14 35 -36 19 5 1.51 146 0 0 -35 44 45 10 48 24.2 33 3 -19 -35 15 2 -36 14 53 -35 12 45 -36 17 13 1.51 147 0 0 -35 43 21 10 47 59.3 33 2 -20 -35 13 39 -36 13 28 -35 11 22 -36 15 48 1.51 148 0 0 -35 42 24 10 47 34.4 33 1 -20 -35 12 42 -36 12 30 -35 10 25 -36 14 50 1.51 149 0 0 -35 41 53 10 47 9.5 33 360 -21 -35 12 11 -36 11 59 -35 9 55 -36 14 19 1.51 150 0 0 -35 41 50 10 46 44.5 33 359 -22 -35 12 7 -36 11 55 -35 9 51 -36 14 16 1.51 151 0 0 -35 42 13 10 46 19.6 33 358 -22 -35 12 30 -36 12 19 -35 10 14 -36 14 39 1.51 152 0 0 -35 43 3 10 45 54.7 33 357 -23 -35 13 20 -36 13 9 -35 11 3 -36 15 29 1.51 153 0 0 -35 44 19 10 45 29.8 33 356 -23 -35 14 36 -36 14 26 -35 12 19 -36 16 46 1.51 154 0 0 -35 46 2 10 45 5.0 33 355 -24 -35 16 18 -36 16 10 -35 14 1 -36 18 30 1.51 155 0 0 -35 48 12 10 44 40.2 33 354 -24 -35 18 27 -36 18 21 -35 16 10 -36 20 42 1.51 156 0 0 -35 50 49 10 44 15.5 33 353 -25 -35 21 2 -36 20 59 -35 18 45 -36 23 20 1.52 157 0 0 -35 53 52 10 43 50.9 33 352 -25 -35 24 4 -36 24 4 -35 21 47 -36 26 25 1.52 158 0 0 -35 57 22 10 43 26.4 33 351 -26 -35 27 32 -36 27 36 -35 25 15 -36 29 57 1.52 159 0 0 -36 1 19 10 43 1.9 33 350 -27 -35 31 27 -36 31 35 -35 29 10 -36 33 56 1.52 160 0 0 -36 5 43 10 42 37.6 32 349 -27 -35 35 49 -36 36 1 -35 33 32 -36 38 22 1.52 161 0 0 -36 10 33 10 42 13.4 32 348 -27 -35 40 37 -36 40 54 -35 38 19 -36 43 15 1.52 162 0 0 -36 15 50 10 41 49.4 32 347 -28 -35 45 52 -36 46 14 -35 43 34 -36 48 35 1.52 163 0 0 -36 21 34 10 41 25.5 32 346 -28 -35 51 33 -36 52 0 -35 49 15 -36 54 22 1.52 164 0 0 -36 27 45 10 41 1.8 31 345 -29 -35 57 40 -36 58 14 -35 55 22 -37 0 36 1.53 165 0 0 -36 34 22 10 40 38.2 31 344 -29 -36 4 14 -37 4 55 -36 1 56 -37 7 17 1.53 166 0 0 -36 41 27 10 40 14.9 31 343 -30 -36 11 15 -37 12 3 -36 8 56 -37 14 26 1.53 167 0 0 -36 48 58 10 39 51.7 30 342 -30 -36 18 42 -37 19 38 -36 16 23 -37 22 1 1.53 168 0 0 -36 56 55 10 39 28.8 30 341 -30 -36 26 36 -37 27 39 -36 24 17 -37 30 3 1.53 169 0 0 -37 5 20 10 39 6.0 30 340 -31 -36 34 56 -37 36 8 -36 32 37 -37 38 32 1.53 170 0 0 -37 14 11 10 38 43.6 29 340 -31 -36 43 43 -37 45 4 -36 41 23 -37 47 28 1.54 171 0 0 -37 23 29 10 38 21.3 29 339 -32 -36 52 56 -37 54 27 -36 50 36 -37 56 51 1.54 172 0 0 -37 33 13 10 37 59.3 28 338 -32 -37 2 36 -38 4 16 -37 0 15 -38 6 41 1.54 173 0 0 -37 43 24 10 37 37.6 28 337 -32 -37 12 42 -38 14 33 -37 10 21 -38 16 58 1.54 174 0 0 -37 54 2 10 37 16.2 28 336 -32 -37 23 15 -38 25 16 -37 20 53 -38 27 42 1.54 175 0 0 -38 5 6 10 36 55.1 27 335 -33 -37 34 13 -38 36 26 -37 31 51 -38 38 52 1.55 176 0 0 -38 16 37 10 36 34.3 27 334 -33 -37 45 39 -38 48 3 -37 43 16 -38 50 30 1.55 177 0 0 -38 28 35 10 36 13.8 26 333 -33 -37 57 30 -39 0 7 -37 55 7 -39 2 34 1.55 178 0 0 -38 40 59 10 35 53.6 26 333 -33 -38 9 48 -39 12 38 -38 7 25 -39 15 5 1.55 179 0 0 -38 53 50 10 35 33.8 25 332 -34 -38 22 32 -39 25 35 -38 20 8 -39 28 3 1.56 180 0 0 -39 7 6 10 35 14.3 25 331 -34 -38 35 42 -39 38 59 -38 33 18 -39 41 27 1.56 -179 0 0 -39 20 49 10 34 55.3 24 330 -34 -38 49 18 -39 52 49 -38 46 53 -39 55 18 1.56 -178 0 0 -39 34 59 10 34 36.6 23 329 -34 -39 3 20 -40 7 6 -39 0 55 -40 9 35 1.56 -177 0 0 -39 49 34 10 34 18.3 23 329 -34 -39 17 48 -40 21 49 -39 15 22 -40 24 19 1.57 -176 0 0 -40 4 35 10 34 0.4 22 328 -34 -39 32 42 -40 36 58 -39 30 16 -40 39 29 1.57 -175 0 0 -40 20 3 10 33 42.9 22 327 -34 -39 48 1 -40 52 34 -39 45 34 -40 55 6 1.57 -174 0 0 -40 35 56 10 33 25.8 21 326 -34 -40 3 46 -41 8 36 -40 1 19 -41 11 8 1.58 -173 0 0 -40 52 15 10 33 9.2 20 325 -34 -40 19 57 -41 25 3 -40 17 29 -41 27 36 1.58 -172 0 0 -41 8 59 10 32 53.1 20 325 -34 -40 36 32 -41 41 56 -40 34 4 -41 44 30 1.58 -171 0 0 -41 26 9 10 32 37.4 19 324 -34 -40 53 33 -41 59 15 -40 51 4 -42 1 50 1.58 -170 0 0 -41 43 44 10 32 22.2 19 323 -34 -41 10 59 -42 17 0 -41 8 29 -42 19 35 1.59 -169 0 0 -42 1 43 10 32 7.5 18 322 -34 -41 28 49 -42 35 9 -41 26 19 -42 37 45 1.59 -168 0 0 -42 20 8 10 31 53.3 17 322 -34 -41 47 5 -42 53 44 -41 44 33 -42 56 21 1.59 -167 0 0 -42 38 57 10 31 39.7 17 321 -34 -42 5 44 -43 12 43 -42 3 12 -43 15 21 1.60 -166 0 0 -42 58 11 10 31 26.5 16 320 -34 -42 24 47 -43 32 7 -42 22 14 -43 34 46 1.60 -165 0 0 -43 17 48 10 31 13.9 15 319 -34 -42 44 15 -43 51 55 -42 41 41 -43 54 35 1.60 -164 0 0 -43 37 49 10 31 1.8 14 319 -33 -43 4 6 -44 12 8 -43 1 31 -44 14 48 1.61 -163 0 0 -43 58 14 10 30 50.3 14 318 -33 -43 24 20 -44 32 43 -43 21 44 -44 35 24 1.61 -162 0 0 -44 19 2 10 30 39.3 13 317 -33 -43 44 57 -44 53 43 -43 42 20 -44 56 25 1.61 -161 0 0 -44 40 13 10 30 29.0 12 317 -33 -44 5 56 -45 15 5 -44 3 19 -45 17 48 1.62 -160 0 0 -45 1 46 10 30 19.2 12 316 -33 -44 27 18 -45 36 50 -44 24 40 -45 39 33 1.62 -159 0 0 -45 23 41 10 30 10.0 11 315 -32 -44 49 2 -45 58 57 -44 46 23 -46 1 41 1.62 -158 0 0 -45 45 57 10 30 1.4 10 314 -32 -45 11 7 -46 21 25 -45 8 27 -46 24 11 1.63 -157 0 0 -46 8 35 10 29 53.4 9 314 -32 -45 33 33 -46 44 15 -45 30 52 -46 47 2 1.63 -156 0 0 -46 31 33 10 29 46.0 9 313 -31 -45 56 19 -47 7 26 -45 53 38 -47 10 13 1.64 -155 0 0 -46 54 51 10 29 39.2 8 312 -31 -46 19 26 -47 30 57 -46 16 43 -47 33 45 1.64 -154 0 0 -47 18 29 10 29 33.1 7 311 -30 -46 42 51 -47 54 47 -46 40 8 -47 57 37 1.65 -153 0 0 -47 42 26 10 29 27.6 6 311 -30 -47 6 36 -48 18 56 -47 3 52 -48 21 47 1.65 -152 0 0 -48 6 41 10 29 22.7 6 310 -30 -47 30 38 -48 43 24 -47 27 53 -48 46 16 1.66 -151 0 0 -48 31 13 10 29 18.5 5 309 -29 -47 54 58 -49 8 10 -47 52 13 -49 11 3 1.67 -150 0 0 -48 56 2 10 29 14.9 4 309 -29 -48 19 35 -49 33 12 -48 16 49 -49 36 6 1.69 -149 0 0 -49 21 8 10 29 12.0 3 308 -28 -48 44 29 -49 58 31 -48 41 41 -50 1 26 1.71 -148 0 0 -49 46 29 10 29 9.7 2 307 -28 -49 9 37 -50 24 5 -49 6 48 -50 27 1 1.74 -147 0 0 -50 12 4 10 29 8.0 2 306 -27 -49 35 0 -50 49 53 -49 32 10 -50 52 50 1.80 -146 0 0 -50 37 53 10 29 7.0 1 305 -27 -50 0 37 -51 15 56 -49 57 46 -51 18 54 1.95 -145 0 0 -51 3 55 10 29 6.6 0 305 -26 -50 26 26 .. .. .. -50 23 35 .. .. .. 3.43 Uncertainty in time = +/- 4 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 555-027524 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 25 59.3525 DE: +20 57 16.113 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 25 59.3525 DE: +20 57 16.113 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (43) Ariadne asteroid class: approx. diameter [km]: 61 approx. diameter ["]: 0.046 distance from Earth [AU]: 1.82380 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#133 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", 0.001", 94.834° remarks: * orbital elements for (43)Ariadne : Mean anomaly = 197.4268620892 deg Arg. of pericenter = 16.2114780345 deg Long. of node = 264.7607722014 deg Inclination = 3.4707069668 deg Eccentricity = 0.1687442165 Semimajor axis = 2.2027548515 AU Perihelion dist = 1.8310527099 AU Mag: H = 8.00, G = 0.11 Epoch of elements : MJD 59991.44916667 TDT (2023 Feb 16.4492) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1332023Feb07,18.71,2023,2,16,10.784970,0.003484,-0.832522,-1.834577,-0.007917,0.004529,-0.000061,0.000001,0.000000 148.8976,20.9413,21.74,-12.34,False UCAC4 555-027524,6.43315349,20.9544757,0.00,9.75,0.00,0.0,4,,6.45625864,20.9413191,2.66,0.00,0,0,0 43,Ariadne,12.32,60.8,1.8238,0,0,-0.630,-0.04,,3.6,0 0,197.2914,2023,2,16,16.2115,264.7608,3.4707,0.16874,2.20275,1.83105,8.05,5.0,0.15 1.039,0.0107,0.0015,95,0.0018,Known errors,-1.00,-1,-1,-1 20230216_027524,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:37 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org