IOTA/IOTA-ES occultation update for (178) Belisana / UCAC4 576-015889 event on 2024 Dec 27, 04:18 UT Visible from Summary ------- On 2024 Dec 27 UT, the 36.9941017031804 km diameter asteroid (178) Belisana will occult a 11.2 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 1.92 mag to 12.92 mag (the magnitude of the asteroid) for at most 3.270 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 Dec 27, 04:11 - 2024 Dec 27, 04:26 * geocentric midpoint of event [JD]: 2460671.67985433 * magnitude of target star: 11.20 * magnitude drop [mag]: 1.92 * estimated maximum duration [s]: 3.270 * Moon: 13 % sunlit, 150° distance * Sun: 167° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 51 * 1 sigma uncertainty interval [path widths]: +/- 0.19 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.029, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.029", 0.006", 85°) * approx speed of asteroid's shadow [km/s]: 11.3548 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 576-015889 by 178 Belisana on 2024 Dec 27 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 169 0 0 37 38 41 4 25 46.3 0 58 10 37 54 57 37 22 31 38 1 16 37 16 16 .... 170 0 0 38 8 55 4 25 46.1 1 59 9 38 25 13 37 52 42 38 31 33 37 46 26 -0.78 171 0 0 38 39 13 4 25 45.7 2 59 8 38 55 34 38 22 58 39 1 56 38 16 41 -0.84 172 0 0 39 9 36 4 25 45.0 3 60 7 39 25 59 38 53 18 39 32 22 38 47 0 -0.87 173 0 0 39 40 1 4 25 44.2 4 61 6 39 56 27 39 23 41 40 2 50 39 17 22 -0.88 174 0 0 40 10 28 4 25 43.2 5 61 6 40 26 57 39 54 5 40 33 21 39 47 46 -0.89 175 0 0 40 40 56 4 25 42.0 6 62 5 40 57 27 40 24 31 41 3 52 40 18 10 -0.90 176 0 0 41 11 24 4 25 40.6 7 63 4 41 27 57 40 54 56 41 34 23 40 48 35 -0.90 177 0 0 41 41 50 4 25 39.0 8 63 3 41 58 25 41 25 20 42 4 52 41 18 58 -0.90 178 0 0 42 12 14 4 25 37.3 9 64 2 42 28 51 41 55 42 42 35 19 41 49 19 -0.91 179 0 0 42 42 34 4 25 35.3 10 65 1 42 59 13 42 26 0 43 5 42 42 19 37 -0.91 -180 0 0 43 12 50 4 25 33.2 10 65 0 43 29 31 42 56 15 43 36 0 42 49 51 -0.91 -179 0 0 43 43 1 4 25 31.0 11 66 -1 43 59 44 43 26 24 44 6 13 43 19 59 -0.91 -178 0 0 44 13 5 4 25 28.6 12 67 -2 44 29 50 43 56 26 44 36 20 43 50 1 -0.91 -177 0 0 44 43 2 4 25 26.0 13 68 -2 44 59 48 44 26 22 45 6 19 44 19 56 -0.92 -176 0 0 45 12 51 4 25 23.3 14 68 -3 45 29 38 44 56 10 45 36 10 44 49 43 -0.92 -175 0 0 45 42 31 4 25 20.4 15 69 -4 45 59 19 45 25 48 46 5 52 45 19 21 -0.92 -174 0 0 46 12 1 4 25 17.4 15 70 -5 46 28 50 45 55 17 46 35 23 45 48 50 -0.92 -173 0 0 46 41 20 4 25 14.3 16 71 -6 46 58 10 46 24 35 47 4 43 46 18 7 -0.92 -172 0 0 47 10 27 4 25 11.1 17 71 -7 47 27 18 46 53 41 47 33 51 46 47 13 -0.92 -171 0 0 47 39 21 4 25 7.7 18 72 -8 47 56 13 47 22 35 48 2 47 47 16 7 -0.92 -170 0 0 48 8 2 4 25 4.2 19 73 -8 48 24 55 47 51 15 48 31 29 47 44 47 -0.92 -169 0 0 48 36 29 4 25 0.7 19 74 -9 48 53 22 48 19 42 48 59 56 48 13 13 -0.92 -168 0 0 49 4 42 4 24 57.0 20 75 -10 49 21 35 48 47 54 49 28 9 48 41 25 -0.93 -167 0 0 49 32 38 4 24 53.2 21 76 -11 49 49 32 49 15 51 49 56 6 49 9 22 -0.93 -166 0 0 50 0 19 4 24 49.3 22 76 -11 50 17 12 49 43 31 50 23 46 49 37 2 -0.93 -165 0 0 50 27 42 4 24 45.4 22 77 -12 50 44 35 50 10 55 50 51 10 50 4 26 -0.93 -164 0 0 50 54 48 4 24 41.3 23 78 -13 51 11 41 50 38 1 51 18 15 50 31 32 -0.93 -163 0 0 51 21 36 4 24 37.2 24 79 -14 51 38 29 51 4 49 51 45 3 50 58 21 -0.93 -162 0 0 51 48 6 4 24 33.0 24 80 -14 52 4 58 51 31 19 52 11 31 51 24 51 -0.93 -161 0 0 52 14 16 4 24 28.8 25 81 -15 52 31 7 51 57 30 52 37 41 51 51 2 -0.93 -160 0 0 52 40 7 4 24 24.5 26 82 -16 52 56 57 52 23 22 53 3 30 52 16 54 -0.93 -159 0 0 53 5 37 4 24 20.1 26 83 -17 53 22 27 52 48 53 53 28 59 52 42 26 -0.93 -158 0 0 53 30 47 4 24 15.7 27 84 -17 53 47 36 53 14 5 53 54 8 53 7 38 -0.93 -157 0 0 53 55 37 4 24 11.3 28 85 -18 54 12 24 53 38 55 54 18 55 53 32 29 -0.93 -156 0 0 54 20 5 4 24 6.8 28 86 -19 54 36 50 54 3 25 54 43 22 53 56 59 -0.93 -155 0 0 54 44 11 4 24 2.2 29 87 -19 55 0 56 54 27 33 55 7 26 54 21 8 -0.94 -154 0 0 55 7 56 4 23 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18 45.3 46 181 -44 69 1 47 68 34 9 69 7 10 68 28 49 -0.96 - 77 0 0 68 48 28 4 18 41.8 46 183 -44 69 2 19 68 34 41 69 7 41 68 29 21 -0.96 - 76 0 0 68 48 47 4 18 38.3 46 184 -44 69 2 37 68 35 0 69 8 0 68 29 40 -0.96 - 75 0 0 68 48 53 4 18 34.8 46 185 -44 69 2 43 68 35 5 69 8 5 68 29 46 -0.96 - 74 0 0 68 48 45 4 18 31.3 46 186 -44 69 2 36 68 34 58 69 7 58 68 29 39 -0.96 - 73 0 0 68 48 25 4 18 27.8 46 188 -44 69 2 16 68 34 38 69 7 38 68 29 18 -0.96 - 72 0 0 68 47 52 4 18 24.3 46 189 -44 69 1 43 68 34 4 69 7 5 68 28 45 -0.96 - 71 0 0 68 47 6 4 18 20.8 46 190 -44 69 0 57 68 33 18 69 6 19 68 27 58 -0.96 - 70 0 0 68 46 7 4 18 17.3 46 192 -44 68 59 58 68 32 18 69 5 21 68 26 59 -0.96 - 69 0 0 68 44 55 4 18 13.8 46 193 -44 68 58 46 68 31 6 69 4 9 68 25 46 -0.96 - 68 0 0 68 43 29 4 18 10.3 46 194 -44 68 57 22 68 29 40 69 2 45 68 24 20 -0.96 - 67 0 0 68 41 51 4 18 6.8 46 195 -45 68 55 44 68 28 1 69 1 7 68 22 41 -0.96 - 66 0 0 68 40 0 4 18 3.3 46 197 -45 68 53 53 68 26 9 68 59 17 68 20 48 -0.96 - 65 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-0.95 - 27 0 0 64 16 42 4 15 38.1 39 245 -43 64 31 58 64 1 30 64 37 54 63 55 38 -0.95 - 26 0 0 64 4 17 4 15 34.1 39 246 -42 64 19 36 63 49 2 64 25 33 63 43 9 -0.95 - 25 0 0 63 51 32 4 15 30.0 38 248 -42 64 6 54 63 36 14 64 12 53 63 30 20 -0.95 - 24 0 0 63 38 27 4 15 25.9 38 249 -42 63 53 52 63 23 6 63 59 52 63 17 10 -0.95 - 23 0 0 63 25 2 4 15 21.8 38 250 -42 63 40 30 63 9 37 63 46 31 63 3 41 -0.95 - 22 0 0 63 11 15 4 15 17.7 37 251 -41 63 26 47 62 55 48 63 32 49 62 49 50 -0.95 - 21 0 0 62 57 9 4 15 13.6 37 252 -41 63 12 44 62 41 38 63 18 47 62 35 39 -0.95 - 20 0 0 62 42 41 4 15 9.4 37 253 -41 62 58 19 62 27 7 63 4 24 62 21 7 -0.95 - 19 0 0 62 27 52 4 15 5.3 36 254 -41 62 43 33 62 12 15 62 49 39 62 6 13 -0.95 - 18 0 0 62 12 41 4 15 1.1 36 256 -41 62 28 26 61 57 1 62 34 33 61 50 58 -0.95 - 17 0 0 61 57 9 4 14 56.9 35 257 -40 62 12 57 61 41 26 62 19 5 61 35 22 -0.95 - 16 0 0 61 41 15 4 14 52.7 35 258 -40 61 57 6 61 25 28 62 3 15 61 19 23 -0.95 - 15 0 0 61 24 58 4 14 48.5 35 259 -40 61 40 53 61 9 9 61 47 4 61 3 3 -0.95 - 14 0 0 61 8 20 4 14 44.3 34 260 -39 61 24 17 60 52 28 61 30 29 60 46 20 -0.95 - 13 0 0 60 51 19 4 14 40.1 34 261 -39 61 7 20 60 35 24 61 13 33 60 29 15 -0.95 - 12 0 0 60 33 56 4 14 35.8 33 262 -39 60 49 59 60 17 57 60 56 14 60 11 48 -0.95 - 11 0 0 60 16 10 4 14 31.6 33 263 -38 60 32 16 60 0 9 60 38 32 59 53 57 -0.95 - 10 0 0 59 58 1 4 14 27.4 32 264 -38 60 14 10 59 41 57 60 20 27 59 35 45 -0.95 - 9 0 0 59 39 29 4 14 23.2 32 265 -38 59 55 42 59 23 22 60 2 0 59 17 9 -0.95 - 8 0 0 59 20 35 4 14 18.9 31 267 -37 59 36 50 59 4 25 59 43 9 58 58 10 -0.95 - 7 0 0 59 1 17 4 14 14.7 31 268 -37 59 17 35 58 45 4 59 23 55 58 38 49 -0.95 - 6 0 0 58 41 36 4 14 10.5 31 269 -37 58 57 56 58 25 20 59 4 18 58 19 4 -0.95 - 5 0 0 58 21 32 4 14 6.3 30 270 -36 58 37 55 58 5 14 58 44 17 57 58 56 -0.95 - 4 0 0 58 1 4 4 14 2.1 29 271 -36 58 17 30 57 44 44 58 23 53 57 38 26 -0.95 - 3 0 0 57 40 14 4 13 57.9 29 272 -35 57 56 42 57 23 51 58 3 7 57 17 32 -0.95 - 2 0 0 57 19 0 4 13 53.8 28 273 -35 57 35 31 57 2 35 57 41 56 56 56 15 -0.95 - 1 0 0 56 57 24 4 13 49.6 28 274 -34 57 13 57 56 40 56 57 20 23 56 34 35 -0.95 0 0 0 56 35 24 4 13 45.5 27 275 -34 56 51 59 56 18 54 56 58 26 56 12 32 -0.95 1 0 0 56 13 1 4 13 41.5 27 276 -33 56 29 38 55 56 29 56 36 6 55 50 7 -0.95 2 0 0 55 50 16 4 13 37.4 26 277 -33 56 6 55 55 33 42 56 13 24 55 27 19 -0.96 3 0 0 55 27 8 4 13 33.4 26 278 -32 55 43 49 55 10 32 55 50 18 55 4 8 -0.96 4 0 0 55 3 37 4 13 29.4 25 279 -32 55 20 20 54 47 0 55 26 50 54 40 35 -0.96 5 0 0 54 39 45 4 13 25.5 24 279 -31 54 56 29 54 23 6 55 3 0 54 16 40 -0.96 6 0 0 54 15 30 4 13 21.6 24 280 -31 54 32 16 53 58 50 54 38 47 53 52 24 -0.96 7 0 0 53 50 54 4 13 17.8 23 281 -30 54 7 41 53 34 12 54 14 13 53 27 45 -0.96 8 0 0 53 25 56 4 13 14.0 22 282 -30 53 42 45 53 9 13 53 49 17 53 2 46 -0.96 9 0 0 53 0 37 4 13 10.3 22 283 -29 53 17 27 52 43 53 53 24 0 52 37 26 -0.96 10 0 0 52 34 58 4 13 6.7 21 284 -28 52 51 49 52 18 13 52 58 22 52 11 45 -0.96 11 0 0 52 8 59 4 13 3.1 20 285 -28 52 25 50 51 52 12 52 32 24 51 45 44 -0.96 12 0 0 51 42 39 4 12 59.6 20 286 -27 51 59 32 51 25 53 52 6 6 51 19 24 -0.96 13 0 0 51 16 1 4 12 56.2 19 287 -27 51 32 54 50 59 14 51 39 28 50 52 45 -0.96 14 0 0 50 49 4 4 12 52.9 18 287 -26 51 5 57 50 32 16 51 12 32 50 25 47 -0.96 15 0 0 50 21 48 4 12 49.7 17 288 -25 50 38 42 50 5 0 50 45 17 49 58 31 -0.96 16 0 0 49 54 15 4 12 46.5 17 289 -25 50 11 10 49 37 27 50 17 44 49 30 58 -0.97 17 0 0 49 26 26 4 12 43.5 16 290 -24 49 43 20 49 9 37 49 49 54 49 3 8 -0.97 18 0 0 48 58 19 4 12 40.6 15 291 -23 49 15 13 48 41 31 49 21 48 48 35 2 -0.97 19 0 0 48 29 58 4 12 37.8 14 292 -22 48 46 51 48 13 10 48 53 25 48 6 41 -0.97 20 0 0 48 1 21 4 12 35.1 14 292 -22 48 18 14 47 44 33 48 24 48 47 38 5 -0.97 21 0 0 47 32 30 4 12 32.5 13 293 -21 47 49 23 47 15 43 47 55 56 47 9 15 -0.98 22 0 0 47 3 26 4 12 30.1 12 294 -20 47 20 18 46 46 39 47 26 51 46 40 11 -0.98 23 0 0 46 34 9 4 12 27.8 11 295 -19 46 51 0 46 17 23 46 57 33 46 10 55 -0.98 24 0 0 46 4 40 4 12 25.7 10 295 -19 46 21 30 45 47 56 46 28 3 45 41 28 -0.99 25 0 0 45 35 1 4 12 23.6 10 296 -18 45 51 50 45 18 17 45 58 22 45 11 50 -0.99 26 0 0 45 5 11 4 12 21.8 9 297 -17 45 21 59 44 48 29 45 28 31 44 42 3 -1.00 27 0 0 44 35 13 4 12 20.1 8 298 -16 44 51 59 44 18 32 44 58 31 44 12 6 -1.01 28 0 0 44 5 6 4 12 18.6 7 298 -15 44 21 51 43 48 27 44 28 22 43 42 1 -1.02 29 0 0 43 34 52 4 12 17.2 6 299 -15 43 51 36 43 18 15 43 58 6 43 11 50 -1.03 30 0 0 43 4 33 4 12 16.0 5 300 -14 43 21 14 42 47 56 43 27 44 42 41 32 -1.05 31 0 0 42 34 7 4 12 15.0 4 300 -13 42 50 47 42 17 33 42 57 16 42 11 9 -1.08 32 0 0 42 3 38 4 12 14.1 3 301 -12 42 20 16 41 47 5 42 26 44 41 40 43 -1.12 33 0 0 41 33 5 4 12 13.5 3 302 -11 41 49 41 41 16 35 41 56 8 41 10 12 -1.19 34 0 0 41 2 30 4 12 13.0 2 302 -10 41 19 4 40 46 2 41 25 30 40 39 41 -1.34 35 0 0 40 31 54 4 12 12.8 1 303 -9 40 48 25 40 15 28 40 54 51 40 9 8 -1.88 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: UCAC4 576-015889 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 26 06.7329 DE: +25 00 41.894 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 26 06.7329 DE: +25 00 41.894 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 12.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (178) Belisana asteroid class: approx. diameter [km]: 37 approx. diameter ["]: 0.032 distance from Earth [AU]: 1.59800 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): 0.029", 0.006", 85.185° remarks: * orbital elements for (178)Belisana : Mean anomaly = 182.9675312812 deg Arg. of pericenter = 213.5654205145 deg Long. of node = 51.0796865918 deg Inclination = 1.8913207124 deg Eccentricity = 0.0418362285 Semimajor axis = 2.4620630273 AU Perihelion dist = 2.3590595958 AU Mag: H = 9.44, G = 0.15 Epoch of elements : MJD 60671.17985525 TDT (2024 Dec 27.1799) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#612023Apr24,3.27,2024,12,27,4.316504,-0.019392,0.687353,-6.406408,-0.181112,0.001337,-0.000104,0.000001,0.000000 -78.9777,25.0344,115.54,-23.31,False UCAC4 576-015889,5.43520360,25.0116371,12.20,11.20,10.66,0.1,0,,5.46122300,25.0343583,1.92,2.00,0,0,0 178,Belisana,12.92,37.110,1.5980,0,0,-2.593,-1.00,,3.2,0 0,182.9216,2024,12,27,213.5654,51.0797,1.8913,0.04184,2.46206,2.35906,9.43,5.0,0.15 1.194,0.0287,0.0060,85,0.0062,Known errors,0.92,0,-1,-1 20241227_015889,60140.76 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org