IOTA/IOTA-ES occultation update for (481) Emita / TYC 873-00562-1 event on 2024 Dec 20, 00:03 UT Visible from Summary ------- On 2024 Dec 20 UT, the 102.465 km diameter asteroid (481) Emita will occult a 10.8 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.48 mag to 14.24 mag (the magnitude of the asteroid) for at most 5.770 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: 2024 Dec 19, 23:57 - 2024 Dec 20, 00:09 * geocentric midpoint of event [JD]: 2460664.50249109 * magnitude of target star: 10.81 * magnitude drop [mag]: 3.48 * estimated maximum duration [s]: 5.770 * Moon: 76 % sunlit, 36° distance * Sun: 86° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 112 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.002", 117°) * approx speed of asteroid's shadow [km/s]: 17.7689 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 873-00562-1 by 481 Emita on 2024 Dec 20 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 10 0 0 -13 28 8 23 58 8.0 - 0 81 -52 -13 58 58 -12 57 26 -14 2 41 -12 53 45 .... 11 0 0 -13 19 24 23 58 8.0 - 1 81 -52 -13 50 13 -12 48 43 -13 53 56 -12 45 2 0.19 12 0 0 -13 10 53 23 58 8.2 - 2 81 -52 -13 41 40 -12 40 13 -13 45 23 -12 36 31 0.31 13 0 0 -13 2 34 23 58 8.5 - 3 81 -51 -13 33 21 -12 31 55 -13 37 4 -12 28 14 0.35 14 0 0 -12 54 29 23 58 8.9 - 4 80 -51 -13 25 15 -12 23 51 -13 28 58 -12 20 10 0.38 15 0 0 -12 46 37 23 58 9.5 - 5 80 -51 -13 17 22 -12 16 0 -13 21 5 -12 12 19 0.39 16 0 0 -12 38 59 23 58 10.1 - 6 80 -51 -13 9 43 -12 8 22 -13 13 26 -12 4 41 0.40 17 0 0 -12 31 34 23 58 10.9 - 7 80 -50 -13 2 17 -12 0 58 -13 6 0 -11 57 17 0.41 18 0 0 -12 24 23 23 58 11.8 - 8 80 -50 -12 55 6 -11 53 48 -12 58 48 -11 50 7 0.41 19 0 0 -12 17 26 23 58 12.8 - 9 79 -50 -12 48 8 -11 46 52 -12 51 50 -11 43 11 0.42 20 0 0 -12 10 44 23 58 13.9 - 10 79 -49 -12 41 24 -11 40 10 -12 45 7 -11 36 29 0.42 21 0 0 -12 4 15 23 58 15.1 - 11 79 -49 -12 34 55 -11 33 42 -12 38 37 -11 30 2 0.42 22 0 0 -11 58 1 23 58 16.5 - 12 79 -49 -12 28 40 -11 27 29 -12 32 22 -11 23 48 0.42 23 0 0 -11 52 1 23 58 17.9 - 13 78 -48 -12 22 40 -11 21 30 -12 26 22 -11 17 49 0.43 24 0 0 -11 46 16 23 58 19.5 - 14 78 -48 -12 16 54 -11 15 45 -12 20 36 -11 12 5 0.43 25 0 0 -11 40 46 23 58 21.2 - 15 78 -47 -12 11 24 -11 10 16 -12 15 5 -11 6 36 0.43 26 0 0 -11 35 31 23 58 23.0 - 16 78 -47 -12 6 8 -11 5 1 -12 9 50 -11 1 21 0.43 27 0 0 -11 30 31 23 58 24.9 - 17 78 -46 -12 1 7 -11 0 1 -12 4 49 -10 56 21 0.43 28 0 0 -11 25 46 23 58 27.0 - 18 77 -46 -11 56 21 -10 55 17 -12 0 3 -10 51 37 0.43 29 0 0 -11 21 16 23 58 29.1 - 19 77 -45 -11 51 51 -10 50 48 -11 55 33 -10 47 8 0.43 30 0 0 -11 17 1 23 58 31.4 - 20 77 -44 -11 47 36 -10 46 34 -11 51 18 -10 42 54 0.43 31 0 0 -11 13 2 23 58 33.7 - 21 77 -44 -11 43 37 -10 42 35 -11 47 18 -10 38 55 0.43 32 0 0 -11 9 19 23 58 36.2 - 22 76 -43 -11 39 53 -10 38 52 -11 43 34 -10 35 13 0.44 33 0 0 -11 5 51 23 58 38.8 - 23 76 -43 -11 36 25 -10 35 25 -11 40 6 -10 31 45 0.44 34 0 0 -11 2 39 23 58 41.5 - 24 76 -42 -11 33 12 -10 32 13 -11 36 54 -10 28 34 0.44 35 0 0 -10 59 43 23 58 44.3 - 25 75 -41 -11 30 16 -10 29 17 -11 33 57 -10 25 38 0.44 36 0 0 -10 57 3 23 58 47.2 - 26 75 -41 -11 27 35 -10 26 37 -11 31 17 -10 22 58 0.44 37 0 0 -10 54 38 23 58 50.2 - 27 75 -40 -11 25 11 -10 24 13 -11 28 52 -10 20 34 0.44 38 0 0 -10 52 30 23 58 53.3 - 28 75 -39 -11 23 2 -10 22 5 -11 26 44 -10 18 26 0.44 39 0 0 -10 50 38 23 58 56.5 - 29 74 -39 -11 21 10 -10 20 13 -11 24 51 -10 16 34 0.44 40 0 0 -10 49 2 23 58 59.8 - 30 74 -38 -11 19 34 -10 18 37 -11 23 15 -10 14 58 0.44 41 0 0 -10 47 42 23 59 3.3 - 30 74 -37 -11 18 14 -10 17 17 -11 21 55 -10 13 38 0.44 42 0 0 -10 46 38 23 59 6.8 - 31 73 -36 -11 17 10 -10 16 14 -11 20 51 -10 12 34 0.44 43 0 0 -10 45 51 23 59 10.4 - 32 73 -36 -11 16 22 -10 15 26 -11 20 3 -10 11 47 0.44 44 0 0 -10 45 19 23 59 14.1 - 33 72 -35 -11 15 51 -10 14 55 -11 19 32 -10 11 16 0.44 45 0 0 -10 45 5 23 59 17.9 - 34 72 -34 -11 15 36 -10 14 40 -11 19 18 -10 11 1 0.44 46 0 0 -10 45 6 23 59 21.9 - 35 72 -33 -11 15 38 -10 14 42 -11 19 19 -10 11 2 0.44 47 0 0 -10 45 24 23 59 25.9 - 36 71 -32 -11 15 56 -10 14 59 -11 19 37 -10 11 20 0.44 48 0 0 -10 45 58 23 59 30.0 - 37 71 -32 -11 16 30 -10 15 34 -11 20 12 -10 11 54 0.44 49 0 0 -10 46 49 23 59 34.2 - 38 70 -31 -11 17 21 -10 16 24 -11 21 3 -10 12 45 0.44 50 0 0 -10 47 56 23 59 38.4 - 39 70 -30 -11 18 29 -10 17 31 -11 22 10 -10 13 52 0.44 51 0 0 -10 49 20 23 59 42.8 - 40 69 -29 -11 19 52 -10 18 54 -11 23 34 -10 15 15 0.44 52 0 0 -10 51 0 23 59 47.3 - 41 69 -28 -11 21 33 -10 20 34 -11 25 14 -10 16 54 0.44 53 0 0 -10 52 56 23 59 51.8 - 42 68 -27 -11 23 29 -10 22 30 -11 27 11 -10 18 50 0.44 54 0 0 -10 55 9 23 59 56.4 - 43 68 -27 -11 25 42 -10 24 42 -11 29 24 -10 21 3 0.45 55 0 0 -10 57 37 0 0 1.1 44 67 -26 -11 28 12 -10 27 11 -11 31 53 -10 23 31 0.45 56 0 0 -11 0 23 0 0 5.9 45 67 -25 -11 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61 337 24 -19 9 38 -18 7 2 -19 13 26 -18 3 17 0.45 108 0 0 -18 52 1 0 5 14.2 60 336 25 -19 23 24 -18 20 46 -19 27 11 -18 17 1 0.45 109 0 0 -19 5 52 0 5 20.1 60 334 26 -19 37 16 -18 34 36 -19 41 3 -18 30 51 0.45 110 0 0 -19 19 49 0 5 26.0 59 332 27 -19 51 13 -18 48 33 -19 55 1 -18 44 47 0.45 111 0 0 -19 33 52 0 5 31.9 58 331 28 -20 5 17 -19 2 35 -20 9 4 -18 58 49 0.45 112 0 0 -19 48 0 0 5 37.7 58 329 29 -20 19 25 -19 16 42 -20 23 13 -19 12 56 0.45 113 0 0 -20 2 13 0 5 43.4 57 328 30 -20 33 39 -19 30 54 -20 37 27 -19 27 8 0.45 114 0 0 -20 16 30 0 5 49.1 56 326 31 -20 47 57 -19 45 11 -20 51 45 -19 41 25 0.45 115 0 0 -20 30 52 0 5 54.7 56 325 32 -21 2 20 -19 59 32 -21 6 8 -19 55 46 0.45 116 0 0 -20 45 18 0 6 0.3 55 324 33 -21 16 46 -20 13 58 -21 20 34 -20 10 12 0.45 117 0 0 -20 59 48 0 6 5.8 54 322 34 -21 31 17 -20 28 27 -21 35 5 -20 24 41 0.45 118 0 0 -21 14 21 0 6 11.3 53 321 35 -21 45 50 -20 42 59 -21 49 38 -20 39 13 0.45 119 0 0 -21 28 57 0 6 16.6 53 320 36 -22 0 26 -20 57 35 -22 4 15 -20 53 49 0.45 120 0 0 -21 43 35 0 6 22.0 52 319 37 -22 15 5 -21 12 13 -22 18 54 -21 8 27 0.45 121 0 0 -21 58 16 0 6 27.2 51 318 38 -22 29 47 -21 26 54 -22 33 35 -21 23 7 0.45 122 0 0 -22 12 59 0 6 32.4 50 317 39 -22 44 30 -21 41 36 -22 48 18 -21 37 50 0.45 123 0 0 -22 27 44 0 6 37.5 49 316 40 -22 59 15 -21 56 20 -23 3 3 -21 52 34 0.45 124 0 0 -22 42 30 0 6 42.6 48 315 41 -23 14 1 -22 11 6 -23 17 49 -22 7 19 0.45 125 0 0 -22 57 16 0 6 47.5 48 314 42 -23 28 48 -22 25 52 -23 32 37 -22 22 6 0.45 126 0 0 -23 12 4 0 6 52.4 47 313 43 -23 43 36 -22 40 40 -23 47 24 -22 36 53 0.45 127 0 0 -23 26 52 0 6 57.2 46 312 44 -23 58 24 -22 55 27 -24 2 12 -22 51 41 0.45 128 0 0 -23 41 39 0 7 2.0 45 311 45 -24 13 11 -23 10 15 -24 17 0 -23 6 28 0.45 129 0 0 -23 56 27 0 7 6.6 44 311 46 -24 27 59 -23 25 2 -24 31 47 -23 21 16 0.45 130 0 0 -24 11 13 0 7 11.2 43 310 47 -24 42 46 -23 39 49 -24 46 34 -23 36 2 0.45 131 0 0 -24 25 59 0 7 15.7 42 309 48 -24 57 31 -23 54 35 -25 1 20 -23 50 48 0.45 132 0 0 -24 40 43 0 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9 15 -26 58 53 0.45 145 0 0 -27 47 59 0 8 9.2 30 299 61 -28 19 26 -27 16 39 -28 23 14 -27 12 53 0.45 146 0 0 -28 1 53 0 8 12.3 29 299 61 -28 33 20 -27 30 33 -28 37 8 -27 26 47 0.45 147 0 0 -28 15 41 0 8 15.4 28 298 62 -28 47 7 -27 44 22 -28 50 55 -27 40 37 0.45 148 0 0 -28 29 23 0 8 18.3 27 298 63 -29 0 49 -27 58 5 -29 4 37 -27 54 20 0.45 149 0 0 -28 43 0 0 8 21.2 26 297 64 -29 14 25 -28 11 42 -29 18 12 -28 7 57 0.45 150 0 0 -28 56 29 0 8 23.9 26 296 65 -29 27 54 -28 25 13 -29 31 41 -28 21 27 0.45 151 0 0 -29 9 53 0 8 26.6 25 296 66 -29 41 16 -28 38 37 -29 45 4 -28 34 51 0.45 152 0 0 -29 23 9 0 8 29.1 24 295 67 -29 54 32 -28 51 54 -29 58 19 -28 48 8 0.45 153 0 0 -29 36 18 0 8 31.6 23 295 67 -30 7 40 -29 5 4 -30 11 27 -29 1 18 0.45 154 0 0 -29 49 20 0 8 33.9 22 294 68 -30 20 41 -29 18 6 -30 24 28 -29 14 21 0.45 155 0 0 -30 2 14 0 8 36.2 21 294 69 -30 33 34 -29 31 2 -30 37 21 -29 27 17 0.45 156 0 0 -30 15 1 0 8 38.4 20 293 70 -30 46 20 -29 43 49 -30 50 7 -29 40 4 0.45 157 0 0 -30 27 39 0 8 40.5 19 293 71 -30 58 57 -29 56 28 -31 2 44 -29 52 44 0.45 158 0 0 -30 40 9 0 8 42.4 18 292 71 -31 11 27 -30 9 0 -31 15 14 -30 5 15 0.45 159 0 0 -30 52 31 0 8 44.3 18 291 72 -31 23 48 -30 21 23 -31 27 34 -30 17 38 0.45 160 0 0 -31 4 45 0 8 46.1 17 291 73 -31 36 0 -30 33 37 -31 39 47 -30 29 53 0.45 161 0 0 -31 16 50 0 8 47.8 16 290 74 -31 48 4 -30 45 43 -31 51 50 -30 41 58 0.45 162 0 0 -31 28 45 0 8 49.4 15 290 74 -31 59 59 -30 57 40 -32 3 45 -30 53 55 0.45 163 0 0 -31 40 32 0 8 50.9 14 289 75 -32 11 45 -31 9 27 -32 15 31 -31 5 43 0.45 164 0 0 -31 52 10 0 8 52.3 13 289 76 -32 23 21 -31 21 6 -32 27 7 -31 17 22 0.45 165 0 0 -32 3 38 0 8 53.7 12 288 76 -32 34 48 -31 32 35 -32 38 34 -31 28 51 0.45 166 0 0 -32 14 56 0 8 54.9 11 288 77 -32 46 6 -31 43 55 -32 49 51 -31 40 11 0.45 167 0 0 -32 26 5 0 8 56.0 11 287 77 -32 57 13 -31 55 5 -33 0 59 -31 51 21 0.45 168 0 0 -32 37 4 0 8 57.1 10 286 78 -33 8 11 -32 6 5 -33 11 57 -32 2 21 0.45 169 0 0 -32 47 53 0 8 58.0 9 286 78 -33 18 59 -32 16 55 -33 22 45 -32 13 12 0.46 170 0 0 -32 58 32 0 8 58.9 8 285 78 -33 29 37 -32 27 35 -33 33 22 -32 23 52 0.46 171 0 0 -33 9 1 0 8 59.7 7 285 79 -33 40 5 -32 38 5 -33 43 50 -32 34 22 0.46 172 0 0 -33 19 19 0 9 0.3 6 284 79 -33 50 22 -32 48 24 -33 54 7 -32 44 41 0.46 173 0 0 -33 29 27 0 9 0.9 5 284 79 -34 0 29 -32 58 33 -34 4 14 -32 54 50 0.46 174 0 0 -33 39 25 0 9 1.4 5 283 79 -34 10 25 -33 8 32 -34 14 10 -33 4 49 0.47 175 0 0 -33 49 11 0 9 1.9 4 283 79 -34 20 11 -33 18 19 -34 23 55 -33 14 37 0.47 176 0 0 -33 58 47 0 9 2.2 3 282 79 -34 29 45 -33 27 56 -34 33 30 -33 24 14 0.48 177 0 0 -34 8 12 0 9 2.4 2 281 79 -34 39 9 -33 37 22 -34 42 53 -33 33 40 0.50 178 0 0 -34 17 26 0 9 2.6 1 281 79 -34 48 22 -33 46 37 -34 52 6 -33 42 55 0.54 179 0 0 -34 26 28 0 9 2.7 0 280 79 -34 57 23 -33 55 41 -35 1 7 -33 51 59 0.80 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 873-00562-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 24 38.1418 DE: +08 29 04.474 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 24 38.1420 DE: +08 29 04.473 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.8 * B mag [mag]: 11.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (481) Emita asteroid class: approx. diameter [km]: 102 approx. diameter ["]: 0.053 distance from Earth [AU]: 2.68000 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#98 date of fit: 2023 Apr 27 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): 0.010", 0.002", 116.532° remarks: * orbital elements for (481)Emita : Mean anomaly = 87.8619870213 deg Arg. of pericenter = 348.8511750673 deg Long. of node = 66.6904661864 deg Inclination = 9.8493205195 deg Eccentricity = 0.1574832747 Semimajor axis = 2.7394288474 AU Perihelion dist = 2.3080146217 AU Mag: H = 8.85, G = 0.15 Epoch of elements : MJD 60664.00249109 TDT (2024 Dec 20.0025) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#982023Apr27,5.77,2024,12,20,0.059786,-0.075744,-0.401693,9.858589,-1.842332,-0.005389,0.002447,0.000000,0.000000 96.5051,8.3454,178.50,-23.43,False TYC 873-00562-1,12.41059492,8.4845764,11.08,10.81,10.66,0.0,0,,12.43173596,8.3454177,3.47,3.18,0,0,0 481,Emita,14.24,102.465,2.6800,0,0,2.180,-6.05,,7.4,0 0,87.6441,2024,12,19,348.8512,66.6905,9.8493,0.15748,2.73943,2.30801,8.85,5.0,0.15 1.060,0.0100,0.0017,117,0.0032,Known errors,0.93,0,-1,-1 20241220_0562-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org