IOTA/IOTA-ES occultation update for (178) Belisana / TYC 1877-00524-1 event on 2024 Oct 19, 16:59 UT Visible from Summary ------- On 2024 Oct 19 UT, the 37.032 km diameter asteroid (178) Belisana 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 2.86 mag to 13.98 mag (the magnitude of the asteroid) for at most 8.710 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: 99 * date and approx. time of event: 2024 Oct 19, 16:41 - 2024 Oct 19, 17:16 * geocentric midpoint of event [JD]: 2460603.20766021 * magnitude of target star: 11.20 * magnitude drop [mag]: 2.86 * estimated maximum duration [s]: 8.710 * Moon: 92 % sunlit, 34° distance * Sun: 114° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 55 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 7.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.005", 90°) * approx speed of asteroid's shadow [km/s]: 4.2526 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1877-00524-1 by 178 Belisana on 2024 Oct 19 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 118 0 0 -50 58 36 16 42 18.7 1 49 -28 -51 17 49 -50 39 33 -51 27 37 -50 29 57 .... 119 0 0 -50 25 33 16 42 19.2 1 48 -28 -50 44 44 -50 6 32 -50 54 31 -49 56 56 0.53 120 0 0 -49 52 14 16 42 20.1 2 47 -29 -50 11 22 -49 33 15 -50 21 8 -49 23 41 0.72 121 0 0 -49 18 41 16 42 21.6 3 46 -29 -49 37 46 -48 59 44 -49 47 31 -48 50 11 0.81 122 0 0 -48 44 53 16 42 23.6 4 46 -29 -49 3 57 -48 25 59 -49 13 40 -48 16 27 0.86 123 0 0 -48 10 54 16 42 26.2 5 45 -30 -48 29 54 -47 52 3 -48 39 36 -47 42 32 0.89 124 0 0 -47 36 43 16 42 29.3 6 44 -30 -47 55 41 -47 17 55 -48 5 21 -47 8 26 0.91 125 0 0 -47 2 23 16 42 33.0 7 43 -30 -47 21 17 -46 43 38 -47 30 56 -46 34 10 0.93 126 0 0 -46 27 54 16 42 37.2 7 43 -30 -46 46 45 -46 9 12 -46 56 22 -45 59 46 0.94 127 0 0 -45 53 18 16 42 42.1 8 42 -31 -46 12 6 -45 34 39 -46 21 41 -45 25 15 0.95 128 0 0 -45 18 36 16 42 47.5 9 41 -31 -45 37 20 -45 0 1 -45 46 54 -44 50 38 0.96 129 0 0 -44 43 50 16 42 53.6 10 40 -31 -45 2 30 -44 25 18 -45 12 2 -44 15 58 0.97 130 0 0 -44 9 1 16 43 0.3 11 40 -31 -44 27 38 -43 50 33 -44 37 7 -43 41 14 0.97 131 0 0 -43 34 11 16 43 7.6 12 39 -31 -43 52 43 -43 15 46 -44 2 11 -43 6 29 0.98 132 0 0 -42 59 20 16 43 15.6 13 38 -32 -43 17 48 -42 41 0 -43 27 14 -42 31 45 0.98 133 0 0 -42 24 31 16 43 24.2 14 37 -32 -42 42 55 -42 6 15 -42 52 18 -41 57 1 0.99 134 0 0 -41 49 45 16 43 33.5 15 36 -32 -42 8 5 -41 31 33 -42 17 26 -41 22 21 0.99 135 0 0 -41 15 3 16 43 43.4 16 36 -32 -41 33 19 -40 56 55 -41 42 37 -40 47 46 0.99 136 0 0 -40 40 27 16 43 53.9 17 35 -32 -40 58 38 -40 22 24 -41 7 55 -40 13 17 1.00 137 0 0 -40 5 59 16 44 5.2 18 34 -32 -40 24 6 -39 48 0 -40 33 20 -39 38 55 1.00 138 0 0 -39 31 40 16 44 17.1 19 33 -32 -39 49 42 -39 13 45 -39 58 54 -39 4 43 1.00 139 0 0 -38 57 31 16 44 29.6 19 33 -32 -39 15 29 -38 39 41 -39 24 38 -38 30 41 1.01 140 0 0 -38 23 35 16 44 42.8 20 32 -31 -38 41 27 -38 5 49 -38 50 35 -37 56 51 1.01 141 0 0 -37 49 51 16 44 56.7 21 31 -31 -38 7 40 -37 32 10 -38 16 44 -37 23 15 1.01 142 0 0 -37 16 23 16 45 11.2 22 30 -31 -37 34 7 -36 58 47 -37 43 9 -36 49 54 1.01 143 0 0 -36 43 12 16 45 26.4 23 29 -31 -37 0 51 -36 25 40 -37 9 51 -36 16 50 1.02 144 0 0 -36 10 19 16 45 42.2 24 28 -31 -36 27 53 -35 52 52 -36 36 50 -35 44 3 1.02 145 0 0 -35 37 45 16 45 58.6 25 28 -30 -35 55 14 -35 20 23 -36 4 9 -35 11 37 1.02 146 0 0 -35 5 33 16 46 15.6 26 27 -30 -35 22 57 -34 48 15 -35 31 49 -34 39 31 1.03 147 0 0 -34 33 42 16 46 33.3 27 26 -30 -34 51 2 -34 16 29 -34 59 52 -34 7 48 1.03 148 0 0 -34 2 16 16 46 51.5 27 25 -29 -34 19 30 -33 45 8 -34 28 18 -33 36 28 1.03 149 0 0 -33 31 14 16 47 10.3 28 24 -29 -33 48 24 -33 14 11 -33 57 9 -33 5 34 1.03 150 0 0 -33 0 39 16 47 29.7 29 23 -29 -33 17 44 -32 43 41 -33 26 27 -32 35 6 1.04 151 0 0 -32 30 32 16 47 49.7 30 22 -28 -32 47 33 -32 13 38 -32 56 13 -32 5 6 1.04 152 0 0 -32 0 54 16 48 10.2 31 21 -28 -32 17 50 -31 44 4 -32 26 27 -31 35 35 1.04 153 0 0 -31 31 46 16 48 31.2 32 20 -27 -31 48 37 -31 15 1 -31 57 12 -31 6 34 1.04 154 0 0 -31 3 10 16 48 52.7 32 19 -27 -31 19 56 -30 46 29 -31 28 29 -30 38 4 1.05 155 0 0 -30 35 6 16 49 14.7 33 18 -26 -30 51 48 -30 18 30 -31 0 18 -30 10 7 1.05 156 0 0 -30 7 35 16 49 37.2 34 17 -26 -30 24 13 -29 51 4 -30 32 41 -29 42 43 1.05 157 0 0 -29 40 40 16 50 0.1 34 16 -25 -29 57 13 -29 24 13 -30 5 38 -29 15 54 1.06 158 0 0 -29 14 20 16 50 23.5 35 15 -24 -29 30 48 -28 57 57 -29 39 12 -28 49 41 1.06 159 0 0 -28 48 37 16 50 47.2 36 14 -24 -29 5 1 -28 32 19 -29 13 22 -28 24 4 1.06 160 0 0 -28 23 32 16 51 11.4 36 13 -23 -28 39 51 -28 7 17 -28 48 10 -27 59 5 1.06 161 0 0 -27 59 5 16 51 35.9 37 11 -22 -28 15 20 -27 42 55 -28 23 37 -27 34 45 1.07 162 0 0 -27 35 17 16 52 0.8 38 10 -22 -27 51 29 -27 19 11 -27 59 43 -27 11 3 1.07 163 0 0 -27 12 10 16 52 26.0 38 9 -21 -27 28 17 -26 56 8 -27 36 30 -26 48 2 1.07 164 0 0 -26 49 44 16 52 51.5 39 8 -20 -27 5 47 -26 33 46 -27 13 58 -26 25 42 1.07 165 0 0 -26 27 59 16 53 17.2 39 7 -19 -26 43 59 -26 12 5 -26 52 8 -26 4 3 1.08 166 0 0 -26 6 57 16 53 43.3 40 5 -19 -26 22 53 -25 51 7 -26 31 0 -25 43 6 1.08 167 0 0 -25 46 38 16 54 9.5 40 4 -18 -26 2 30 -25 30 51 -26 10 35 -25 22 52 1.08 168 0 0 -25 27 3 16 54 36.0 40 3 -17 -25 42 51 -25 11 19 -25 50 54 -25 3 22 1.08 169 0 0 -25 8 11 16 55 2.7 41 1 -16 -25 23 56 -24 52 31 -25 31 58 -24 44 36 1.09 170 0 0 -24 50 5 16 55 29.5 41 0 -15 -25 5 47 -24 34 28 -25 13 46 -24 26 34 1.09 171 0 0 -24 32 43 16 55 56.5 41 359 -14 -24 48 22 -24 17 9 -24 56 20 -24 9 18 1.09 172 0 0 -24 16 7 16 56 23.6 42 357 -14 -24 31 43 -24 0 37 -24 39 39 -23 52 46 1.09 173 0 0 -24 0 17 16 56 50.8 42 356 -13 -24 15 50 -23 44 50 -24 23 45 -23 37 1 1.10 174 0 0 -23 45 14 16 57 18.1 42 355 -12 -24 0 44 -23 29 49 -24 8 37 -23 22 1 1.10 175 0 0 -23 30 57 16 57 45.4 42 353 -11 -23 46 24 -23 15 35 -23 54 16 -23 7 49 1.10 176 0 0 -23 17 27 16 58 12.7 42 352 -10 -23 32 52 -23 2 7 -23 40 42 -22 54 22 1.10 177 0 0 -23 4 44 16 58 40.1 42 350 -9 -23 20 6 -22 49 27 -23 27 56 -22 41 43 1.10 178 0 0 -22 52 49 16 59 7.5 42 349 -8 -23 8 9 -22 37 34 -23 15 57 -22 29 52 1.10 179 0 0 -22 41 42 16 59 34.8 42 348 -7 -22 56 59 -22 26 29 -23 4 46 -22 18 47 1.10 180 0 0 -22 31 22 17 0 2.1 42 346 -6 -22 46 37 -22 16 11 -22 54 23 -22 8 30 1.11 -179 0 0 -22 21 50 17 0 29.3 42 345 -5 -22 37 3 -22 6 41 -22 44 48 -21 59 1 1.11 -178 0 0 -22 13 6 17 0 56.4 42 344 -4 -22 28 17 -21 57 59 -22 36 1 -21 50 20 1.11 -177 0 0 -22 5 10 17 1 23.4 42 342 -3 -22 20 20 -21 50 4 -22 28 3 -21 42 27 1.11 -176 0 0 -21 58 2 17 1 50.2 41 341 -2 -22 13 10 -21 42 58 -22 20 53 -21 35 21 1.11 -175 0 0 -21 51 43 17 2 17.0 41 340 -1 -22 6 50 -21 36 40 -22 14 32 -21 29 4 1.11 -174 0 0 -21 46 12 17 2 43.5 41 338 0 -22 1 18 -21 31 11 -22 8 59 -21 23 35 1.11 -173 0 0 -21 41 29 17 3 9.8 41 337 1 -21 56 34 -21 26 29 -22 4 14 -21 18 54 1.11 -172 0 0 -21 37 34 17 3 36.0 40 336 2 -21 52 38 -21 22 35 -22 0 18 -21 15 1 1.11 -171 0 0 -21 34 27 17 4 1.9 40 335 3 -21 49 30 -21 19 29 -21 57 9 -21 11 55 1.11 -170 0 0 -21 32 9 17 4 27.5 39 333 4 -21 47 10 -21 17 11 -21 54 49 -21 9 37 1.11 -169 0 0 -21 30 38 17 4 52.9 39 332 5 -21 45 39 -21 15 41 -21 53 18 -21 8 7 1.11 -168 0 0 -21 29 54 17 5 18.1 39 331 6 -21 44 55 -21 14 58 -21 52 34 -21 7 25 1.11 -167 0 0 -21 29 59 17 5 42.9 38 330 7 -21 44 59 -21 15 3 -21 52 37 -21 7 30 1.11 -166 0 0 -21 30 51 17 6 7.4 37 329 8 -21 45 51 -21 15 55 -21 53 29 -21 8 22 1.11 -165 0 0 -21 32 30 17 6 31.6 37 328 9 -21 47 30 -21 17 34 -21 55 8 -21 10 1 1.11 -164 0 0 -21 34 56 17 6 55.4 36 327 10 -21 49 56 -21 20 0 -21 57 34 -21 12 27 1.11 -163 0 0 -21 38 9 17 7 18.9 36 326 11 -21 53 9 -21 23 13 -22 0 47 -21 15 40 1.11 -162 0 0 -21 42 8 17 7 42.0 35 325 12 -21 57 9 -21 27 12 -22 4 47 -21 19 39 1.11 -161 0 0 -21 46 54 17 8 4.7 34 324 13 -22 1 55 -21 31 58 -22 9 34 -21 24 24 1.10 -160 0 0 -21 52 26 17 8 27.0 34 323 14 -22 7 28 -21 37 29 -22 15 7 -21 29 55 1.10 -159 0 0 -21 58 44 17 8 48.9 33 322 15 -22 13 46 -21 43 46 -22 21 25 -21 36 12 1.10 -158 0 0 -22 5 47 17 9 10.3 32 321 16 -22 20 50 -21 50 49 -22 28 30 -21 43 14 1.10 -157 0 0 -22 13 36 17 9 31.3 32 320 17 -22 28 39 -21 58 36 -22 36 20 -21 51 1 1.10 -156 0 0 -22 22 9 17 9 51.9 31 320 18 -22 37 14 -22 7 8 -22 44 54 -21 59 33 1.10 -155 0 0 -22 31 26 17 10 11.9 30 319 19 -22 46 32 -22 16 25 -22 54 14 -22 8 49 1.10 -154 0 0 -22 41 28 17 10 31.5 29 318 20 -22 56 35 -22 26 25 -23 4 18 -22 18 49 1.10 -153 0 0 -22 52 13 17 10 50.6 29 317 21 -23 7 22 -22 37 9 -23 15 5 -22 29 32 1.09 -152 0 0 -23 3 42 17 11 9.1 28 317 22 -23 18 52 -22 48 36 -23 26 36 -22 40 58 1.09 -151 0 0 -23 15 54 17 11 27.2 27 316 23 -23 31 6 -23 0 46 -23 38 50 -22 53 7 1.09 -150 0 0 -23 28 47 17 11 44.7 26 315 24 -23 44 1 -23 13 38 -23 51 47 -23 5 58 1.09 -149 0 0 -23 42 23 17 12 1.7 25 314 25 -23 57 39 -23 27 12 -24 5 25 -23 19 31 1.09 -148 0 0 -23 56 40 17 12 18.1 24 314 26 -24 11 58 -23 41 27 -24 19 45 -23 33 46 1.09 -147 0 0 -24 11 39 17 12 33.9 23 313 27 -24 26 58 -23 56 23 -24 34 47 -23 48 41 1.09 -146 0 0 -24 27 17 17 12 49.2 23 313 28 -24 42 39 -24 12 0 -24 50 29 -24 4 16 1.08 -145 0 0 -24 43 36 17 13 3.9 22 312 29 -24 59 0 -24 28 16 -25 6 51 -24 20 31 1.08 -144 0 0 -25 0 34 17 13 18.0 21 311 30 -25 16 0 -24 45 12 -25 23 52 -24 37 26 1.08 -143 0 0 -25 18 10 17 13 31.5 20 311 31 -25 33 40 -25 2 46 -25 41 33 -24 54 58 1.08 -142 0 0 -25 36 25 17 13 44.4 19 310 32 -25 51 57 -25 20 58 -25 59 52 -25 13 9 1.08 -141 0 0 -25 55 17 17 13 56.7 18 310 33 -26 10 52 -25 39 48 -26 18 48 -25 31 58 1.08 -140 0 0 -26 14 47 17 14 8.4 17 309 33 -26 30 24 -25 59 14 -26 38 22 -25 51 23 1.08 -139 0 0 -26 34 52 17 14 19.4 16 308 34 -26 50 33 -26 19 17 -26 58 32 -26 11 24 1.08 -138 0 0 -26 55 33 17 14 29.8 15 308 35 -27 11 17 -26 39 55 -27 19 17 -26 32 1 1.08 -137 0 0 -27 16 49 17 14 39.6 14 307 36 -27 32 36 -27 1 8 -27 40 38 -26 53 12 1.08 -136 0 0 -27 38 40 17 14 48.7 13 307 37 -27 54 30 -27 22 55 -28 2 33 -27 14 58 1.08 -135 0 0 -28 1 4 17 14 57.2 12 306 38 -28 16 57 -27 45 16 -28 25 2 -27 37 17 1.08 -134 0 0 -28 24 0 17 15 5.1 11 306 39 -28 39 57 -28 8 9 -28 48 4 -28 0 8 1.08 -133 0 0 -28 47 29 17 15 12.3 10 305 39 -29 3 29 -28 31 34 -29 11 37 -28 23 32 1.08 -132 0 0 -29 11 29 17 15 18.8 9 305 40 -29 27 32 -28 55 30 -29 35 43 -28 47 26 1.08 -131 0 0 -29 35 59 17 15 24.7 8 304 41 -29 52 6 -29 19 57 -30 0 18 -29 11 51 1.08 -130 0 0 -30 0 58 17 15 29.9 7 304 42 -30 17 9 -29 44 53 -30 25 23 -29 36 46 1.08 -129 0 0 -30 26 27 17 15 34.5 6 303 43 -30 42 41 -30 10 18 -30 50 58 -30 2 9 1.09 -128 0 0 -30 52 23 17 15 38.5 6 303 43 -31 8 42 -30 36 11 -31 17 0 -30 27 59 1.09 -127 0 0 -31 18 47 17 15 41.8 5 302 44 -31 35 9 -31 2 30 -31 43 29 -30 54 17 1.10 -126 0 0 -31 45 36 17 15 44.4 4 301 45 -32 2 2 -31 29 16 -32 10 25 -31 21 1 1.12 -125 0 0 -32 12 51 17 15 46.4 3 301 45 -32 29 21 -31 56 27 -32 37 46 -31 48 10 1.15 -124 0 0 -32 40 31 17 15 47.7 2 300 46 -32 57 5 -32 24 3 -33 5 31 -32 15 43 1.21 -123 0 0 -33 8 33 17 15 48.5 1 300 47 -33 25 11 -32 52 1 -33 33 40 -32 43 40 1.43 Uncertainty in time = +/- 7 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1877-00524-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 08 44.6729 DE: +24 16 09.305 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 08 44.6730 DE: +24 16 09.305 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (178) Belisana asteroid class: approx. diameter [km]: 37 approx. diameter ["]: 0.026 distance from Earth [AU]: 1.98400 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#61 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", 0.005", 89.564° remarks: * orbital elements for (178)Belisana : Mean anomaly = 165.7806135055 deg Arg. of pericenter = 213.2977126418 deg Long. of node = 51.0889680304 deg Inclination = 1.8918932377 deg Eccentricity = 0.0417594704 Semimajor axis = 2.4621971426 AU Perihelion dist = 2.3593770939 AU Mag: H = 9.44, G = 0.15 Epoch of elements : MJD 60602.70766008 TDT (2024 Oct 19.7077) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#612023Apr24,8.71,2024,10,19,16.983845,0.138475,-0.727266,2.357900,0.449004,-0.005184,0.000055,0.000000,0.000000 169.1518,24.2660,-78.55,-10.33,False TYC 1877-00524-1,6.14574245,24.2692514,11.34,11.20,11.12,0.0,0,,6.17119347,24.2660165,2.86,2.52,0,0,1 178,Belisana,13.98,37.032,1.9840,0,0,0.764,1.99,,3.2,0 0,165.6001,2024,10,19,213.2977,51.0890,1.8919,0.04176,2.46220,2.35938,9.43,5.0,0.15 1.254,0.0217,0.0053,90,0.0065,Known errors,0.93,0,-1,-1 20241019_0524-1,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org