IOTA/IOTA-ES occultation update for (4779) Whitley / TYC 1356-01197-1 event on 2024 Oct 16, 17:27 UT Visible from Summary ------- On 2024 Oct 16 UT, the 15.184 km diameter asteroid (4779) Whitley will occult a 11.2 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.99 mag to 18.18 mag (the magnitude of the asteroid) for at most 1.330 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 16, 17:20 - 2024 Oct 16, 17:33 * geocentric midpoint of event [JD]: 2460600.22715779 * magnitude of target star: 11.19 * magnitude drop [mag]: 6.99 * estimated maximum duration [s]: 1.330 * Moon: 99 % sunlit, 90° distance * Sun: 100° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 4.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.001", 96°) * approx speed of asteroid's shadow [km/s]: 11.4571 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1356-01197-1 by 4779 Whitley on 2024 Oct 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 106 0 0 -34 31 32 17 20 40.9 1 63 -45 -34 38 6 -34 24 59 -34 41 8 -34 21 58 .... 107 0 0 -34 6 57 17 20 41.2 2 62 -46 -34 13 30 -34 0 25 -34 16 31 -33 57 25 0.62 108 0 0 -33 42 40 17 20 41.7 3 62 -46 -33 49 12 -33 36 9 -33 52 13 -33 33 10 0.76 109 0 0 -33 18 42 17 20 42.3 4 61 -46 -33 25 12 -33 12 12 -33 28 12 -33 9 13 0.83 110 0 0 -32 55 3 17 20 43.2 4 61 -46 -33 1 32 -32 48 34 -33 4 31 -32 45 36 0.87 111 0 0 -32 31 43 17 20 44.4 5 60 -46 -32 38 11 -32 25 16 -32 41 10 -32 22 18 0.90 112 0 0 -32 8 45 17 20 45.7 6 60 -46 -32 15 11 -32 2 18 -32 18 10 -31 59 21 0.91 113 0 0 -31 46 7 17 20 47.2 7 59 -46 -31 52 33 -31 39 42 -31 55 30 -31 36 46 0.93 114 0 0 -31 23 52 17 20 49.0 8 58 -46 -31 30 16 -31 17 28 -31 33 13 -31 14 32 0.94 115 0 0 -31 1 59 17 20 50.9 9 58 -46 -31 8 22 -30 55 36 -31 11 18 -30 52 40 0.95 116 0 0 -30 40 29 17 20 53.1 10 57 -46 -30 46 51 -30 34 7 -30 49 47 -30 31 12 0.96 117 0 0 -30 19 23 17 20 55.5 11 57 -46 -30 25 44 -30 13 3 -30 28 39 -30 10 8 0.96 118 0 0 -29 58 41 17 20 58.1 12 56 -46 -30 5 1 -29 52 22 -30 7 56 -29 49 28 0.97 119 0 0 -29 38 25 17 21 0.9 13 56 -45 -29 44 44 -29 32 7 -29 47 38 -29 29 13 0.97 120 0 0 -29 18 34 17 21 3.9 14 55 -45 -29 24 52 -29 12 17 -29 27 46 -29 9 24 0.98 121 0 0 -28 59 9 17 21 7.1 15 55 -45 -29 5 26 -28 52 53 -29 8 19 -28 50 1 0.98 122 0 0 -28 40 11 17 21 10.6 16 54 -45 -28 46 27 -28 33 56 -28 49 19 -28 31 4 0.98 123 0 0 -28 21 40 17 21 14.2 16 53 -44 -28 27 54 -28 15 26 -28 30 47 -28 12 34 0.99 124 0 0 -28 3 36 17 21 18.0 17 53 -44 -28 9 50 -27 57 23 -28 12 42 -27 54 32 0.99 125 0 0 -27 46 1 17 21 22.1 18 52 -44 -27 52 13 -27 39 49 -27 55 5 -27 36 58 0.99 126 0 0 -27 28 54 17 21 26.3 19 52 -43 -27 35 5 -27 22 43 -27 37 57 -27 19 53 1.00 127 0 0 -27 12 16 17 21 30.7 20 51 -43 -27 18 26 -27 6 6 -27 21 17 -27 3 16 1.00 128 0 0 -26 56 7 17 21 35.3 21 51 -42 -27 2 17 -26 49 58 -27 5 7 -26 47 9 1.00 129 0 0 -26 40 28 17 21 40.2 22 50 -42 -26 46 37 -26 34 20 -26 49 27 -26 31 31 1.00 130 0 0 -26 25 19 17 21 45.2 23 49 -41 -26 31 27 -26 19 12 -26 34 17 -26 16 23 1.00 131 0 0 -26 10 41 17 21 50.3 23 49 -41 -26 16 48 -26 4 35 -26 19 37 -26 1 46 1.01 132 0 0 -25 56 34 17 21 55.7 24 48 -40 -26 2 40 -25 50 28 -26 5 29 -25 47 40 1.01 133 0 0 -25 42 57 17 22 1.3 25 47 -40 -25 49 3 -25 36 52 -25 51 51 -25 34 5 1.01 134 0 0 -25 29 53 17 22 7.0 26 47 -39 -25 35 58 -25 23 48 -25 38 46 -25 21 1 1.01 135 0 0 -25 17 20 17 22 12.9 27 46 -39 -25 23 24 -25 11 16 -25 26 12 -25 8 29 1.01 136 0 0 -25 5 19 17 22 19.0 28 45 -38 -25 11 23 -24 59 16 -25 14 10 -24 56 30 1.01 137 0 0 -24 53 51 17 22 25.2 28 45 -37 -24 59 54 -24 47 49 -25 2 41 -24 45 2 1.01 138 0 0 -24 42 55 17 22 31.6 29 44 -37 -24 48 58 -24 36 54 -24 51 44 -24 34 8 1.02 139 0 0 -24 32 33 17 22 38.1 30 43 -36 -24 38 34 -24 26 32 -24 41 21 -24 23 46 1.02 140 0 0 -24 22 43 17 22 44.9 31 42 -35 -24 28 44 -24 16 43 -24 31 31 -24 13 57 1.02 141 0 0 -24 13 27 17 22 51.7 31 42 -35 -24 19 28 -24 7 27 -24 22 14 -24 4 42 1.02 142 0 0 -24 4 45 17 22 58.7 32 41 -34 -24 10 45 -23 58 45 -24 13 31 -23 56 0 1.02 143 0 0 -23 56 36 17 23 5.9 33 40 -33 -24 2 36 -23 50 37 -24 5 22 -23 47 52 1.02 144 0 0 -23 49 2 17 23 13.2 34 39 -32 -23 55 1 -23 43 3 -23 57 46 -23 40 19 1.02 145 0 0 -23 42 1 17 23 20.6 34 38 -32 -23 48 0 -23 36 3 -23 50 45 -23 33 19 1.02 146 0 0 -23 35 35 17 23 28.2 35 37 -31 -23 41 34 -23 29 37 -23 44 19 -23 26 53 1.03 147 0 0 -23 29 44 17 23 35.8 36 37 -30 -23 35 42 -23 23 46 -23 38 27 -23 21 2 1.03 148 0 0 -23 24 27 17 23 43.6 36 36 -29 -23 30 25 -23 18 30 -23 33 10 -23 15 46 1.03 149 0 0 -23 19 45 17 23 51.6 37 35 -28 -23 25 43 -23 13 48 -23 28 27 -23 11 4 1.03 150 0 0 -23 15 38 17 23 59.6 37 34 -28 -23 21 36 -23 9 41 -23 24 20 -23 6 58 1.03 151 0 0 -23 12 6 17 24 7.8 38 33 -27 -23 18 4 -23 6 10 -23 20 48 -23 3 26 1.03 152 0 0 -23 9 9 17 24 16.0 38 32 -26 -23 15 7 -23 3 13 -23 17 51 -23 0 29 1.03 153 0 0 -23 6 48 17 24 24.4 39 31 -25 -23 12 45 -23 0 52 -23 15 29 -22 58 8 1.03 154 0 0 -23 5 2 17 24 32.8 40 30 -24 -23 10 59 -22 59 5 -23 13 43 -22 56 22 1.03 155 0 0 -23 3 51 17 24 41.4 40 29 -23 -23 9 48 -22 57 54 -23 12 32 -22 55 11 1.03 156 0 0 -23 3 15 17 24 50.0 40 27 -22 -23 9 12 -22 57 19 -23 11 56 -22 54 35 1.03 157 0 0 -23 3 15 17 24 58.7 41 26 -21 -23 9 12 -22 57 19 -23 11 56 -22 54 35 1.03 158 0 0 -23 3 51 17 25 7.5 41 25 -21 -23 9 48 -22 57 54 -23 12 32 -22 55 11 1.03 159 0 0 -23 5 1 17 25 16.4 42 24 -20 -23 10 59 -22 59 5 -23 13 43 -22 56 21 1.04 160 0 0 -23 6 48 17 25 25.3 42 23 -19 -23 12 45 -23 0 51 -23 15 30 -22 58 8 1.04 161 0 0 -23 9 10 17 25 34.3 42 21 -18 -23 15 7 -23 3 13 -23 17 52 -23 0 29 1.04 162 0 0 -23 12 7 17 25 43.3 43 20 -17 -23 18 5 -23 6 10 -23 20 50 -23 3 27 1.04 163 0 0 -23 15 41 17 25 52.4 43 19 -16 -23 21 38 -23 9 43 -23 24 23 -23 6 59 1.04 164 0 0 -23 19 49 17 26 1.6 43 18 -15 -23 25 47 -23 13 51 -23 28 32 -23 11 7 1.04 165 0 0 -23 24 33 17 26 10.7 43 16 -14 -23 30 31 -23 18 35 -23 33 16 -23 15 51 1.04 166 0 0 -23 29 52 17 26 20.0 44 15 -13 -23 35 51 -23 23 54 -23 38 36 -23 21 10 1.04 167 0 0 -23 35 47 17 26 29.2 44 14 -12 -23 41 46 -23 29 48 -23 44 31 -23 27 4 1.04 168 0 0 -23 42 16 17 26 38.5 44 12 -11 -23 48 16 -23 36 17 -23 51 2 -23 33 33 1.04 169 0 0 -23 49 21 17 26 47.8 44 11 -10 -23 55 22 -23 43 22 -23 58 7 -23 40 37 1.04 170 0 0 -23 57 1 17 26 57.1 44 10 -9 -24 3 2 -23 51 1 -24 5 48 -23 48 16 1.04 171 0 0 -24 5 16 17 27 6.4 44 8 -8 -24 11 17 -23 59 16 -24 14 4 -23 56 30 1.04 172 0 0 -24 14 6 17 27 15.7 44 7 -7 -24 20 8 -24 8 5 -24 22 54 -24 5 19 1.04 173 0 0 -24 23 30 17 27 25.1 44 6 -7 -24 29 32 -24 17 28 -24 32 19 -24 14 42 1.04 174 0 0 -24 33 29 17 27 34.4 44 4 -6 -24 39 32 -24 27 26 -24 42 19 -24 24 40 1.04 175 0 0 -24 44 1 17 27 43.7 44 3 -5 -24 50 5 -24 37 59 -24 52 52 -24 35 12 1.04 176 0 0 -24 55 8 17 27 53.0 43 2 -4 -25 1 13 -24 49 5 -25 4 0 -24 46 18 1.04 177 0 0 -25 6 49 17 28 2.2 43 0 -3 -25 12 54 -25 0 45 -25 15 42 -24 57 58 1.04 178 0 0 -25 19 4 17 28 11.4 43 359 -2 -25 25 9 -25 12 59 -25 27 58 -25 10 11 1.04 179 0 0 -25 31 51 17 28 20.6 43 358 -1 -25 37 58 -25 25 45 -25 40 47 -25 22 58 1.04 180 0 0 -25 45 12 17 28 29.8 43 356 0 -25 51 20 -25 39 6 -25 54 9 -25 36 17 1.04 -179 0 0 -25 59 6 17 28 38.9 42 355 1 -26 5 14 -25 52 58 -26 8 4 -25 50 10 1.04 -178 0 0 -26 13 32 17 28 48.0 42 354 2 -26 19 41 -26 7 24 -26 22 31 -26 4 35 1.04 -177 0 0 -26 28 31 17 28 56.9 42 353 3 -26 34 41 -26 22 21 -26 37 31 -26 19 32 1.04 -176 0 0 -26 44 2 17 29 5.9 41 351 4 -26 50 13 -26 37 51 -26 53 4 -26 35 1 1.04 -175 0 0 -27 0 4 17 29 14.7 41 350 5 -27 6 16 -26 53 52 -27 9 7 -26 51 2 1.04 -174 0 0 -27 16 37 17 29 23.5 40 349 6 -27 22 50 -27 10 24 -27 25 41 -27 7 33 1.04 -173 0 0 -27 33 41 17 29 32.2 40 348 7 -27 39 54 -27 27 27 -27 42 47 -27 24 36 1.04 -172 0 0 -27 51 15 17 29 40.8 39 347 8 -27 57 30 -27 45 0 -28 0 22 -27 42 9 1.04 -171 0 0 -28 9 19 17 29 49.4 39 345 9 -28 15 35 -28 3 4 -28 18 28 -28 0 11 1.04 -170 0 0 -28 27 53 17 29 57.8 38 344 10 -28 34 10 -28 21 36 -28 37 4 -28 18 43 1.04 -169 0 0 -28 46 55 17 30 6.1 38 343 11 -28 53 14 -28 40 38 -28 56 8 -28 37 45 1.04 -168 0 0 -29 6 26 17 30 14.3 37 342 12 -29 12 46 -29 0 8 -29 15 41 -28 57 14 1.04 -167 0 0 -29 26 26 17 30 22.4 37 341 13 -29 32 46 -29 20 6 -29 35 41 -29 17 11 1.04 -166 0 0 -29 46 52 17 30 30.4 36 340 13 -29 53 14 -29 40 31 -29 56 10 -29 37 36 1.04 -165 0 0 -30 7 45 17 30 38.2 35 339 14 -30 14 8 -30 1 23 -30 17 5 -29 58 28 1.03 -164 0 0 -30 29 5 17 30 46.0 35 338 15 -30 35 29 -30 22 42 -30 38 26 -30 19 46 1.03 -163 0 0 -30 50 50 17 30 53.6 34 337 16 -30 57 16 -30 44 26 -31 0 13 -30 41 29 1.03 -162 0 0 -31 13 1 17 31 1.0 33 336 17 -31 19 27 -31 6 35 -31 22 25 -31 3 38 1.03 -161 0 0 -31 35 35 17 31 8.3 33 335 18 -31 42 3 -31 29 8 -31 45 2 -31 26 11 1.03 -160 0 0 -31 58 34 17 31 15.5 32 334 19 -32 5 3 -31 52 5 -32 8 2 -31 49 7 1.03 -159 0 0 -32 21 55 17 31 22.5 31 333 20 -32 28 25 -32 15 25 -32 31 25 -32 12 27 1.03 -158 0 0 -32 45 39 17 31 29.3 30 332 21 -32 52 10 -32 39 8 -32 55 11 -32 36 8 1.03 -157 0 0 -33 9 44 17 31 36.0 30 331 21 -33 16 17 -33 3 12 -33 19 18 -33 0 12 1.03 -156 0 0 -33 34 10 17 31 42.5 29 330 22 -33 40 44 -33 27 36 -33 43 45 -33 24 36 1.03 -155 0 0 -33 58 56 17 31 48.8 28 330 23 -34 5 31 -33 52 21 -34 8 33 -33 49 20 1.03 -154 0 0 -34 24 1 17 31 55.0 27 329 24 -34 30 37 -34 17 25 -34 33 40 -34 14 23 1.03 -153 0 0 -34 49 24 17 32 1.0 27 328 25 -34 56 2 -34 42 47 -34 59 5 -34 39 44 1.03 -152 0 0 -35 15 5 17 32 6.8 26 327 25 -35 21 44 -35 8 26 -35 24 48 -35 5 24 1.03 -151 0 0 -35 41 2 17 32 12.4 25 326 26 -35 47 43 -35 34 23 -35 50 48 -35 31 19 1.03 -150 0 0 -36 7 16 17 32 17.8 24 326 27 -36 13 58 -36 0 35 -36 17 3 -35 57 31 1.03 -149 0 0 -36 33 44 17 32 23.1 23 325 28 -36 40 27 -36 27 2 -36 43 33 -36 23 57 1.03 -148 0 0 -37 0 26 17 32 28.1 22 324 28 -37 7 11 -36 53 43 -37 10 17 -36 50 37 1.03 -147 0 0 -37 27 21 17 32 33.0 22 323 29 -37 34 7 -37 20 37 -37 37 14 -37 17 31 1.03 -146 0 0 -37 54 29 17 32 37.7 21 322 30 -38 1 16 -37 47 43 -38 4 23 -37 44 36 1.03 -145 0 0 -38 21 47 17 32 42.2 20 322 31 -38 28 35 -38 15 0 -38 31 43 -38 11 53 1.03 -144 0 0 -38 49 16 17 32 46.4 19 321 31 -38 56 5 -38 42 28 -38 59 14 -38 39 20 1.03 -143 0 0 -39 16 54 17 32 50.5 18 320 32 -39 23 44 -39 10 4 -39 26 53 -39 6 56 1.03 -142 0 0 -39 44 40 17 32 54.4 17 319 32 -39 51 32 -39 37 49 -39 54 41 -39 34 41 1.03 -141 0 0 -40 12 34 17 32 58.1 16 319 33 -40 19 26 -40 5 42 -40 22 36 -40 2 33 1.03 -140 0 0 -40 40 33 17 33 1.5 16 318 34 -40 47 27 -40 33 40 -40 50 38 -40 30 31 1.03 -139 0 0 -41 8 38 17 33 4.8 15 317 34 -41 15 33 -41 1 44 -41 18 45 -40 58 35 1.03 -138 0 0 -41 36 48 17 33 7.9 14 316 35 -41 43 44 -41 29 53 -41 46 55 -41 26 42 1.03 -137 0 0 -42 5 1 17 33 10.8 13 316 35 -42 11 58 -41 58 5 -42 15 10 -41 54 54 1.03 -136 0 0 -42 33 16 17 33 13.4 12 315 36 -42 40 14 -42 26 19 -42 43 26 -42 23 7 1.04 -135 0 0 -43 1 32 17 33 15.9 11 314 36 -43 8 31 -42 54 34 -43 11 44 -42 51 22 1.04 -134 0 0 -43 29 49 17 33 18.2 10 314 37 -43 36 49 -43 22 50 -43 40 2 -43 19 38 1.04 -133 0 0 -43 58 5 17 33 20.3 10 313 37 -44 5 6 -43 51 5 -44 8 20 -43 47 53 1.04 -132 0 0 -44 26 20 17 33 22.2 9 312 38 -44 33 21 -44 19 19 -44 36 35 -44 16 6 1.04 -131 0 0 -44 54 32 17 33 23.9 8 311 38 -45 1 34 -44 47 30 -45 4 49 -44 44 17 1.04 -130 0 0 -45 22 40 17 33 25.5 7 311 38 -45 29 43 -45 15 38 -45 32 58 -45 12 25 1.05 -129 0 0 -45 50 44 17 33 26.8 6 310 39 -45 57 48 -45 43 42 -46 1 4 -45 40 28 1.05 -128 0 0 -46 18 43 17 33 28.0 5 309 39 -46 25 48 -46 11 40 -46 29 3 -46 8 26 1.05 -127 0 0 -46 46 36 17 33 28.9 5 308 39 -46 53 41 -46 39 32 -46 56 57 -46 36 17 1.06 -126 0 0 -47 14 22 17 33 29.8 4 308 40 -47 21 27 -47 7 17 -47 24 43 -47 4 2 1.07 -125 0 0 -47 41 59 17 33 30.4 3 307 40 -47 49 5 -47 34 54 -47 52 22 -47 31 39 1.08 -124 0 0 -48 9 28 17 33 30.9 2 306 40 -48 16 35 -48 2 22 -48 19 51 -47 59 7 1.11 -123 0 0 -48 36 47 17 33 31.2 1 306 40 -48 43 54 -48 29 41 -48 47 11 -48 26 26 1.16 -122 0 0 -49 3 56 17 33 31.3 0 305 41 -49 11 3 -48 56 50 -49 14 20 -48 53 34 1.39 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1356-01197-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 58 41.2454 DE: +21 42 56.270 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 58 41.2455 DE: +21 42 56.269 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4779) Whitley asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.70510 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#46 date of fit: 2023 Feb 10 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): 0.024", 0.001", 95.526° remarks: * orbital elements for (4779)Whitley : Mean anomaly = 303.1665598171 deg Arg. of pericenter = 327.8313960892 deg Long. of node = 185.2716108242 deg Inclination = 0.9362705279 deg Eccentricity = 0.1115697162 Semimajor axis = 3.2042310641 AU Perihelion dist = 2.8467359136 AU Mag: H = 12.64, G = 0.15 Epoch of elements : MJD 60599.72715429 TDT (2024 Oct 16.7272) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#462023Feb10,1.33,2024,10,16,17.451787,-0.104094,-0.712225,6.398614,-0.935826,-0.005693,0.000609,0.000000,0.000000 177.5456,21.6829,-85.42,-9.25,False TYC 1356-01197-1,6.97812371,21.7156305,11.71,11.19,10.91,0.0,0,,7.00287732,21.6828789,6.99,6.82,0,0,0 4779,Whitley,18.18,15.184,2.7051,0,0,1.492,-3.05,,1.4,0 0,303.0416,2024,10,16,327.8314,185.2716,0.9363,0.11157,3.20423,2.84674,12.64,5.0,0.15 1.230,0.0243,0.0013,96,0.0018,Known errors,0.84,0,-1,-1 20241016_1197-1,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:20 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org