IOTA/IOTA-ES occultation update for (425) Cornelia / TYC 1257-00329-1 event on 2023 Aug 21, 20:25 UT Visible from Australia Summary ------- On 2023 Aug 21 UT, the 69 km diameter asteroid (425) Cornelia will occult a 12.3 mag star in the constellation Taurus for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.30 mag to 15.53 mag (the magnitude of the asteroid) for at most 4.010 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: 98 * date and approx. time of event: 2023 Aug 21, 20:20 - 2023 Aug 21, 20:30 * geocentric midpoint of event [JD]: 2460178.35091404 * magnitude of target star: 12.28 * magnitude drop [mag]: 3.30 * estimated maximum duration [s]: 4.010 * Moon: 24 % sunlit, 146° distance * Sun: 87° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 86 * 1 sigma uncertainty interval [path widths]: +/- 0.37 * 1 sigma uncertainty interval [seconds]: +/- 2.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.012", 74°) * approx speed of asteroid's shadow [km/s]: 17.1933 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1257-00329-1 by 425 Cornelia on 2023 Aug 21 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 76 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. -46 9 2 .... 77 0 0 -46 32 6 20 20 23.2 0 61 -51 -46 58 38 -46 5 44 -47 18 14 -45 46 29 .... 78 0 0 -46 9 20 20 20 23.3 1 60 -51 -46 35 54 -45 42 56 -46 55 31 -45 23 40 0.36 79 0 0 -45 46 17 20 20 23.4 2 60 -51 -46 12 53 -45 19 51 -46 32 32 -45 0 33 0.50 80 0 0 -45 22 57 20 20 23.7 3 59 -51 -45 49 35 -44 56 29 -46 9 15 -44 37 10 0.57 81 0 0 -44 59 20 20 20 24.1 4 58 -51 -45 26 0 -44 32 51 -45 45 41 -44 13 31 0.61 82 0 0 -44 35 28 20 20 24.5 4 58 -50 -45 2 9 -44 8 56 -45 21 52 -43 49 35 0.63 83 0 0 -44 11 20 20 20 25.1 5 57 -50 -44 38 3 -43 44 47 -44 57 46 -43 25 25 0.65 84 0 0 -43 46 56 20 20 25.8 6 56 -50 -44 13 41 -43 20 22 -44 33 25 -43 0 59 0.66 85 0 0 -43 22 18 20 20 26.5 7 55 -50 -43 49 4 -42 55 43 -44 8 49 -42 36 19 0.67 86 0 0 -42 57 26 20 20 27.4 8 55 -49 -43 24 13 -42 30 50 -43 43 59 -42 11 26 0.68 87 0 0 -42 32 20 20 20 28.4 9 54 -49 -42 59 8 -42 5 43 -43 18 54 -41 46 18 0.68 88 0 0 -42 7 1 20 20 29.4 9 53 -49 -42 33 49 -41 40 24 -42 53 37 -41 20 58 0.69 89 0 0 -41 41 30 20 20 30.6 10 53 -48 -42 8 18 -41 14 51 -42 28 6 -40 55 25 0.69 90 0 0 -41 15 46 20 20 31.9 11 52 -48 -41 42 35 -40 49 7 -42 2 23 -40 29 41 0.69 91 0 0 -40 49 51 20 20 33.3 12 51 -48 -41 16 40 -40 23 12 -41 36 28 -40 3 45 0.70 92 0 0 -40 23 45 20 20 34.9 13 51 -47 -40 50 35 -39 57 6 -41 10 23 -39 37 39 0.70 93 0 0 -39 57 29 20 20 36.5 14 50 -47 -40 24 19 -39 30 50 -40 44 7 -39 11 23 0.70 94 0 0 -39 31 3 20 20 38.3 15 49 -46 -39 57 53 -39 4 25 -40 17 41 -38 44 58 0.70 95 0 0 -39 4 29 20 20 40.2 16 49 -46 -39 31 18 -38 37 51 -39 51 6 -38 18 24 0.71 96 0 0 -38 37 47 20 20 42.2 16 48 -45 -39 4 35 -38 11 9 -39 24 23 -37 51 43 0.71 97 0 0 -38 10 57 20 20 44.3 17 47 -45 -38 37 45 -37 44 20 -38 57 32 -37 24 54 0.71 98 0 0 -37 44 1 20 20 46.6 18 46 -44 -38 10 48 -37 17 24 -38 30 34 -36 57 59 0.71 99 0 0 -37 16 59 20 20 48.9 19 46 -44 -37 43 45 -36 50 23 -38 3 31 -36 30 58 0.71 100 0 0 -36 49 51 20 20 51.4 20 45 -43 -37 16 37 -36 23 17 -37 36 21 -36 3 53 0.71 101 0 0 -36 22 40 20 20 54.0 21 44 -43 -36 49 24 -35 56 6 -37 9 8 -35 36 44 0.72 102 0 0 -35 55 25 20 20 56.8 22 44 -42 -36 22 8 -35 28 53 -36 41 50 -35 9 31 0.72 103 0 0 -35 28 7 20 20 59.7 23 43 -41 -35 54 48 -35 1 37 -36 14 30 -34 42 16 0.72 104 0 0 -35 0 48 20 21 2.7 24 42 -41 -35 27 27 -34 34 19 -35 47 8 -34 14 59 0.72 105 0 0 -34 33 27 20 21 5.8 24 42 -40 -35 0 5 -34 7 0 -35 19 44 -33 47 42 0.72 106 0 0 -34 6 7 20 21 9.0 25 41 -39 -34 32 42 -33 39 41 -34 52 20 -33 20 24 0.72 107 0 0 -33 38 46 20 21 12.4 26 40 -38 -34 5 20 -33 12 23 -34 24 56 -32 53 7 0.72 108 0 0 -33 11 28 20 21 15.9 27 39 -38 -33 37 59 -32 45 6 -33 57 34 -32 25 52 0.72 109 0 0 -32 44 12 20 21 19.5 28 39 -37 -33 10 41 -32 17 53 -33 30 14 -31 58 40 0.72 110 0 0 -32 16 59 20 21 23.2 29 38 -36 -32 43 26 -31 50 42 -33 2 57 -31 31 31 0.72 111 0 0 -31 49 50 20 21 27.1 30 37 -35 -32 16 14 -31 23 36 -32 35 43 -31 4 27 0.73 112 0 0 -31 22 46 20 21 31.1 31 36 -35 -31 49 8 -30 56 34 -32 8 35 -30 37 27 0.73 113 0 0 -30 55 48 20 21 35.1 32 36 -34 -31 22 7 -30 29 39 -31 41 32 -30 10 34 0.73 114 0 0 -30 28 56 20 21 39.4 32 35 -33 -30 55 13 -30 2 50 -31 14 36 -29 43 47 0.73 115 0 0 -30 2 12 20 21 43.7 33 34 -32 -30 28 26 -29 36 9 -30 47 47 -29 17 8 0.73 116 0 0 -29 35 37 20 21 48.1 34 33 -31 -30 1 47 -29 9 36 -30 21 6 -28 50 37 0.73 117 0 0 -29 9 10 20 21 52.7 35 32 -30 -29 35 18 -28 43 13 -29 54 34 -28 24 16 0.73 118 0 0 -28 42 54 20 21 57.3 36 31 -30 -29 8 58 -28 17 0 -29 28 12 -27 58 5 0.73 119 0 0 -28 16 48 20 22 2.1 37 30 -29 -28 42 49 -27 50 57 -29 2 1 -27 32 5 0.73 120 0 0 -27 50 55 20 22 6.9 37 30 -28 -28 16 52 -27 25 7 -28 36 1 -27 6 17 0.73 121 0 0 -27 25 13 20 22 11.9 38 29 -27 -27 51 7 -26 59 29 -28 10 14 -26 40 41 0.73 122 0 0 -26 59 45 20 22 17.0 39 28 -26 -27 25 36 -26 34 4 -27 44 40 -26 15 19 0.73 123 0 0 -26 34 31 20 22 22.1 40 27 -25 -27 0 18 -26 8 53 -27 19 20 -25 50 10 0.73 124 0 0 -26 9 32 20 22 27.4 41 26 -24 -26 35 16 -25 43 57 -26 54 14 -25 25 17 0.73 125 0 0 -25 44 48 20 22 32.8 41 25 -23 -26 10 28 -25 19 17 -26 29 24 -25 0 39 0.74 126 0 0 -25 20 20 20 22 38.2 42 24 -22 -25 45 57 -24 54 53 -26 4 51 -24 36 18 0.74 127 0 0 -24 56 10 20 22 43.7 43 23 -21 -25 21 43 -24 30 46 -25 40 34 -24 12 13 0.74 128 0 0 -24 32 17 20 22 49.3 44 21 -20 -24 57 47 -24 6 57 -25 16 35 -23 48 27 0.74 129 0 0 -24 8 43 20 22 55.0 44 20 -19 -24 34 8 -23 43 26 -24 52 54 -23 24 58 0.74 130 0 0 -23 45 27 20 23 0.8 45 19 -18 -24 10 49 -23 20 14 -24 29 32 -23 1 49 0.74 131 0 0 -23 22 31 20 23 6.6 46 18 -17 -23 47 50 -22 57 22 -24 6 30 -22 39 0 0.74 132 0 0 -22 59 56 20 23 12.5 46 17 -16 -23 25 11 -22 34 50 -23 43 48 -22 16 30 0.74 133 0 0 -22 37 41 20 23 18.5 47 16 -15 -23 2 52 -22 12 39 -23 21 27 -21 54 22 0.74 134 0 0 -22 15 48 20 23 24.5 48 14 -14 -22 40 56 -21 50 49 -22 59 27 -21 32 35 0.74 135 0 0 -21 54 17 20 23 30.6 48 13 -13 -22 19 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17 33 20 26 11.5 52 334 12 -15 41 21 -14 53 52 -15 58 55 -14 36 33 0.75 161 0 0 -15 7 57 20 26 17.9 52 333 13 -15 31 44 -14 44 18 -15 49 15 -14 27 1 0.75 162 0 0 -14 58 52 20 26 24.2 51 331 14 -15 22 37 -14 35 15 -15 40 7 -14 17 59 0.75 163 0 0 -14 50 18 20 26 30.5 51 330 15 -15 14 1 -14 26 42 -15 31 30 -14 9 28 0.75 164 0 0 -14 42 15 20 26 36.8 51 328 16 -15 5 56 -14 18 41 -15 23 24 -14 1 28 0.75 165 0 0 -14 34 43 20 26 43.0 50 327 17 -14 58 23 -14 11 11 -15 15 49 -13 53 59 0.75 166 0 0 -14 27 43 20 26 49.2 50 326 18 -14 51 21 -14 4 12 -15 8 46 -13 47 2 0.75 167 0 0 -14 21 14 20 26 55.4 49 324 19 -14 44 50 -13 57 45 -15 2 15 -13 40 35 0.75 168 0 0 -14 15 16 20 27 1.5 49 323 20 -14 38 51 -13 51 48 -14 56 15 -13 34 39 0.75 169 0 0 -14 9 50 20 27 7.5 48 322 21 -14 33 24 -13 46 23 -14 50 46 -13 29 15 0.75 170 0 0 -14 4 55 20 27 13.5 48 321 21 -14 28 28 -13 41 30 -14 45 50 -13 24 23 0.75 171 0 0 -14 0 32 20 27 19.4 47 320 22 -14 24 4 -13 37 8 -14 41 25 -13 20 1 0.75 172 0 0 -13 56 41 20 27 25.3 46 319 23 -14 20 12 -13 33 17 -14 37 32 -13 16 11 0.75 173 0 0 -13 53 21 20 27 31.1 46 317 24 -14 16 52 -13 29 58 -14 34 11 -13 12 53 0.75 174 0 0 -13 50 33 20 27 36.9 45 316 25 -14 14 3 -13 27 11 -14 31 22 -13 10 6 0.75 175 0 0 -13 48 17 20 27 42.5 44 315 26 -14 11 46 -13 24 55 -14 29 5 -13 7 51 0.75 176 0 0 -13 46 33 20 27 48.1 44 315 27 -14 10 1 -13 23 11 -14 27 19 -13 6 7 0.75 177 0 0 -13 45 20 20 27 53.7 43 314 28 -14 8 48 -13 21 58 -14 26 6 -13 4 55 0.75 178 0 0 -13 44 38 20 27 59.1 42 313 29 -14 8 6 -13 21 17 -14 25 24 -13 4 14 0.75 179 0 0 -13 44 29 20 28 4.5 42 312 30 -14 7 57 -13 21 8 -14 25 14 -13 4 5 0.75 180 0 0 -13 44 51 20 28 9.8 41 311 31 -14 8 19 -13 21 30 -14 25 36 -13 4 27 0.75 -179 0 0 -13 45 44 20 28 15.0 40 310 32 -14 9 12 -13 22 23 -14 26 30 -13 5 20 0.75 -178 0 0 -13 47 9 20 28 20.2 39 310 33 -14 10 37 -13 23 48 -14 27 55 -13 6 45 0.75 -177 0 0 -13 49 6 20 28 25.2 39 309 34 -14 12 34 -13 25 45 -14 29 52 -13 8 41 0.75 -176 0 0 -13 51 34 20 28 30.2 38 308 34 -14 15 3 -13 28 12 -14 32 21 -13 11 8 0.75 -175 0 0 -13 54 33 20 28 35.1 37 307 35 -14 18 3 -13 31 11 -14 35 21 -13 14 7 0.75 -174 0 0 -13 58 4 20 28 39.8 36 307 36 -14 21 34 -13 34 41 -14 38 53 -13 17 37 0.75 -173 0 0 -14 2 6 20 28 44.5 35 306 37 -14 25 37 -13 38 43 -14 42 56 -13 21 37 0.75 -172 0 0 -14 6 39 20 28 49.1 34 306 38 -14 30 10 -13 43 15 -14 47 31 -13 26 9 0.75 -171 0 0 -14 11 43 20 28 53.6 34 305 39 -14 35 15 -13 48 18 -14 52 36 -13 31 11 0.75 -170 0 0 -14 17 18 20 28 58.0 33 304 40 -14 40 51 -13 53 52 -14 58 13 -13 36 45 0.75 -169 0 0 -14 23 24 20 29 2.3 32 304 40 -14 46 58 -13 59 57 -15 4 21 -13 42 49 0.75 -168 0 0 -14 30 0 20 29 6.5 31 303 41 -14 53 36 -14 6 32 -15 10 59 -13 49 23 0.75 -167 0 0 -14 37 7 20 29 10.5 30 303 42 -15 0 44 -14 13 38 -15 18 9 -13 56 28 0.75 -166 0 0 -14 44 45 20 29 14.5 29 302 43 -15 8 23 -14 21 14 -15 25 49 -14 4 3 0.75 -165 0 0 -14 52 53 20 29 18.4 28 302 43 -15 16 32 -14 29 20 -15 33 59 -14 12 8 0.75 -164 0 0 -15 1 30 20 29 22.1 27 301 44 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52 -17 47 13 -16 59 5 -18 5 0 -16 41 33 0.76 -151 0 0 -17 37 56 20 29 59.9 15 296 52 -18 2 6 -17 13 54 -18 19 55 -16 56 20 0.76 -150 0 0 -17 53 14 20 30 2.0 14 296 52 -18 17 27 -17 29 9 -18 35 18 -17 11 33 0.76 -149 0 0 -18 8 58 20 30 3.8 13 295 53 -18 33 14 -17 44 50 -18 51 7 -17 27 13 0.76 -148 0 0 -18 25 9 20 30 5.6 12 295 53 -18 49 28 -18 0 58 -19 7 23 -17 43 19 0.76 -147 0 0 -18 41 46 20 30 7.2 11 295 53 -19 6 7 -18 17 32 -19 24 5 -17 59 50 0.76 -146 0 0 -18 58 48 20 30 8.7 10 294 54 -19 23 12 -18 34 31 -19 41 12 -18 16 47 0.76 -145 0 0 -19 16 15 20 30 10.1 9 294 54 -19 40 43 -18 51 56 -19 58 45 -18 34 10 0.77 -144 0 0 -19 34 7 20 30 11.3 8 294 54 -19 58 38 -19 9 45 -20 16 43 -18 51 56 0.77 -143 0 0 -19 52 24 20 30 12.3 7 293 54 -20 16 58 -19 27 58 -20 35 5 -19 10 8 0.77 -142 0 0 -20 11 4 20 30 13.3 6 293 55 -20 35 41 -19 46 35 -20 53 51 -19 28 43 0.78 -141 0 0 -20 30 8 20 30 14.1 5 293 55 -20 54 49 -20 5 36 -21 13 0 -19 47 41 0.78 -140 0 0 -20 49 36 20 30 14.7 4 292 55 -21 14 19 -20 25 0 -21 32 33 -20 7 3 0.79 -139 0 0 -21 9 25 20 30 15.2 3 292 55 -21 34 12 -20 44 47 -21 52 29 -20 26 47 0.81 -138 0 0 -21 29 37 20 30 15.6 2 292 55 -21 54 28 -21 4 55 -22 12 47 -20 46 53 0.84 -137 0 0 -21 50 11 20 30 15.9 1 291 55 -22 15 5 -21 25 26 -22 33 26 -21 7 21 0.91 -136 0 0 -22 11 6 20 30 16.0 0 291 55 -22 36 3 -21 46 17 -22 54 27 -21 28 10 1.51 Uncertainty in time = +/- 2 secs Prediction of 2023 Aug 6.7 Data for the target star ------------------------ * name: TYC 1257-00329-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 58 09.0181 DE: +19 04 49.202 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 58 09.0183 DE: +19 04 49.203 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (425) Cornelia asteroid class: approx. diameter [km]: 69 approx. diameter ["]: 0.033 distance from Earth [AU]: 2.90310 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#104 date of fit: 2023 Jul 30 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): 0.018", 0.012", 73.649° remarks: * orbital elements for (425)Cornelia : Mean anomaly = 220.0026148142 deg Arg. of pericenter = 124.8260765894 deg Long. of node = 60.9264487542 deg Inclination = 4.0512220569 deg Eccentricity = 0.0568994004 Semimajor axis = 2.8916675874 AU Perihelion dist = 2.7271334356 AU Mag: H = 9.83, G = 0.15 Epoch of elements : MJD 60177.85097222 TDT (2023 Aug 21.8510) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1042023Jul30,4.01,2023,8,21,20.421937,0.137457,-0.583506,9.442896,2.237477,-0.005559,-0.001140,0.000000,0.000000 143.6496,19.1484,-125.54,11.98,False TYC 1257-00329-1,3.96917166,19.0803338,0.00,12.28,0.00,0.0,4,,3.99180375,19.1484114,3.30,0.00,0,0,0 425,Cornelia,15.53,69.000,2.9031,0,0,2.019,6.78,,3.4,0 0,219.8320,2023,8,21,124.8261,60.9264,4.0512,0.05690,2.89167,2.72713,9.83,5.0,0.15 1.367,0.0183,0.0120,74,0.0219,Known errors,-1.00,0,-1,-1 20230821_0329-1,60162.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 06, 16:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org