IOTA/IOTA-ES occultation update for (345) Tercidina / UCAC4 477-046963 event on 2024 Oct 07, 01:29 UT Visible from Summary ------- On 2024 Oct 07 UT, the 98.554 km diameter asteroid (345) Tercidina will occult a 11.5 mag star in the constellation Sextans for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.53 mag to 13.90 mag (the magnitude of the asteroid) for at most 2.530 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 Oct 07, 01:26 - 2024 Oct 07, 01:32 * geocentric midpoint of event [JD]: 2460590.56227992 * magnitude of target star: 11.48 * magnitude drop [mag]: 2.53 * estimated maximum duration [s]: 2.530 * Moon: 16 % sunlit, 93° distance * Sun: 47° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 99 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.002", 107°) * approx speed of asteroid's shadow [km/s]: 38.9670 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 477-046963 by 345 Tercidina on 2024 Oct 7 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 17 0 0 24 44 14 1 26 57.5 0 85 -46 24 17 24 25 11 5 24 14 55 25 13 35 .... 18 0 0 24 49 17 1 26 57.5 1 85 -45 24 22 28 25 16 7 24 19 59 25 18 36 -0.05 19 0 0 24 53 58 1 26 57.6 2 85 -44 24 27 9 25 20 46 24 24 40 25 23 16 -0.05 20 0 0 24 58 16 1 26 57.7 3 86 -43 24 31 29 25 25 4 24 28 59 25 27 33 -0.04 21 0 0 25 2 12 1 26 57.9 4 86 -42 24 35 26 25 28 59 24 32 56 25 31 28 -0.04 22 0 0 25 5 46 1 26 58.1 5 87 -41 24 39 0 25 32 32 24 36 31 25 35 2 -0.04 23 0 0 25 8 58 1 26 58.3 6 87 -40 24 42 13 25 35 44 24 39 44 25 38 13 -0.04 24 0 0 25 11 48 1 26 58.6 7 88 -39 24 45 3 25 38 33 24 42 34 25 41 2 -0.04 25 0 0 25 14 15 1 26 58.9 8 88 -39 24 47 31 25 41 0 24 45 2 25 43 29 -0.04 26 0 0 25 16 20 1 26 59.3 9 88 -38 24 49 37 25 43 5 24 47 8 25 45 33 -0.04 27 0 0 25 18 3 1 26 59.7 9 89 -37 24 51 20 25 44 47 24 48 51 25 47 16 -0.04 28 0 0 25 19 24 1 27 0.2 10 89 -36 24 52 41 25 46 8 24 50 12 25 48 36 -0.04 29 0 0 25 20 23 1 27 0.7 11 90 -35 24 53 40 25 47 6 24 51 11 25 49 35 -0.04 30 0 0 25 20 59 1 27 1.2 12 90 -34 24 54 16 25 47 42 24 51 47 25 50 11 -0.04 31 0 0 25 21 13 1 27 1.7 13 91 -33 24 54 30 25 47 56 24 52 1 25 50 25 -0.04 32 0 0 25 21 4 1 27 2.4 14 91 -32 24 54 21 25 47 47 24 51 53 25 50 16 -0.04 33 0 0 25 20 33 1 27 3.0 15 91 -31 24 53 51 25 47 17 24 51 22 25 49 46 -0.04 34 0 0 25 19 40 1 27 3.7 16 92 -31 24 52 57 25 46 24 24 50 29 25 48 53 -0.04 35 0 0 25 18 25 1 27 4.4 17 92 -30 24 51 42 25 45 9 24 49 13 25 47 38 -0.04 36 0 0 25 16 47 1 27 5.2 18 93 -29 24 50 4 25 43 31 24 47 35 25 46 0 -0.04 37 0 0 25 14 47 1 27 6.0 19 93 -28 24 48 3 25 41 32 24 45 34 25 44 1 -0.04 38 0 0 25 12 25 1 27 6.8 19 94 -27 24 45 40 25 39 10 24 43 11 25 41 39 -0.04 39 0 0 25 9 40 1 27 7.7 20 94 -26 24 42 55 25 36 25 24 40 26 25 38 55 -0.04 40 0 0 25 6 33 1 27 8.7 21 94 -25 24 39 47 25 33 19 24 37 18 25 35 48 -0.04 41 0 0 25 3 3 1 27 9.6 22 95 -24 24 36 17 25 29 50 24 33 48 25 32 19 -0.04 42 0 0 24 59 11 1 27 10.6 23 95 -23 24 32 24 25 25 59 24 29 55 25 28 28 -0.04 43 0 0 24 54 57 1 27 11.7 24 96 -22 24 28 9 25 21 45 24 25 40 25 24 15 -0.04 44 0 0 24 50 20 1 27 12.7 25 96 -22 24 23 31 25 17 10 24 21 2 25 19 39 -0.04 45 0 0 24 45 21 1 27 13.9 26 97 -21 24 18 31 25 12 11 24 16 2 25 14 41 -0.04 46 0 0 24 39 59 1 27 15.0 27 97 -20 24 13 8 25 6 51 24 10 39 25 9 20 -0.04 47 0 0 24 34 15 1 27 16.2 28 97 -19 24 7 23 25 1 8 24 4 54 25 3 38 -0.04 48 0 0 24 28 9 1 27 17.5 29 98 -18 24 1 16 24 55 3 23 58 46 24 57 33 -0.04 49 0 0 24 21 40 1 27 18.8 30 98 -17 23 54 46 24 48 35 23 52 16 24 51 5 -0.04 50 0 0 24 14 49 1 27 20.1 30 99 -16 23 47 53 24 41 45 23 45 23 24 44 15 -0.04 51 0 0 24 7 35 1 27 21.4 31 99 -15 23 40 38 24 34 33 23 38 8 24 37 3 -0.04 52 0 0 23 59 59 1 27 22.8 32 99 -14 23 33 0 24 26 59 23 30 30 24 29 29 -0.04 53 0 0 23 52 1 1 27 24.3 33 100 -13 23 25 0 24 19 2 23 22 30 24 21 32 -0.04 54 0 0 23 43 40 1 27 25.8 34 100 -12 23 16 38 24 10 42 23 14 8 24 13 13 -0.04 55 0 0 23 34 57 1 27 27.3 35 101 -11 23 7 53 24 2 1 23 5 23 24 4 32 -0.04 56 0 0 23 25 51 1 27 28.8 36 101 -11 22 58 46 23 52 57 22 56 15 23 55 28 -0.04 57 0 0 23 16 24 1 27 30.4 37 102 -10 22 49 17 23 43 31 22 46 46 23 46 2 -0.04 58 0 0 23 6 34 1 27 32.1 38 102 -9 22 39 25 23 33 43 22 36 53 23 36 14 -0.04 59 0 0 22 56 21 1 27 33.7 39 102 -8 22 29 10 23 23 33 22 26 39 23 26 4 -0.04 60 0 0 22 45 47 1 27 35.4 40 103 -7 22 18 34 23 13 0 22 16 2 23 15 32 -0.04 61 0 0 22 34 50 1 27 37.2 41 103 -6 22 7 35 23 2 5 22 5 3 23 4 37 -0.04 62 0 0 22 23 31 1 27 39.0 42 104 -5 21 56 14 22 50 49 21 53 42 22 53 20 -0.04 63 0 0 22 11 50 1 27 40.8 43 104 -4 21 44 31 22 39 10 21 41 59 22 41 42 -0.04 64 0 0 21 59 47 1 27 42.7 44 104 -3 21 32 26 22 27 9 21 29 54 22 29 41 -0.04 65 0 0 21 47 22 1 27 44.6 45 105 -2 21 19 59 22 14 46 21 17 27 22 17 19 -0.04 66 0 0 21 34 36 1 27 46.5 46 105 -1 21 7 10 22 2 2 21 4 37 22 4 34 -0.04 67 0 0 21 21 27 1 27 48.5 46 106 0 20 53 59 21 48 55 20 51 26 21 51 28 -0.04 68 0 0 21 7 57 1 27 50.5 47 106 1 20 40 26 21 35 27 20 37 53 21 38 0 -0.04 69 0 0 20 54 5 1 27 52.6 48 107 2 20 26 32 21 21 38 20 23 59 21 24 11 -0.04 70 0 0 20 39 51 1 27 54.7 49 107 3 20 12 16 21 7 26 20 9 43 21 10 0 -0.04 71 0 0 20 25 16 1 27 56.8 50 107 4 19 57 39 20 52 54 19 55 5 20 55 28 -0.04 72 0 0 20 10 20 1 27 59.0 51 108 5 19 42 40 20 38 0 19 40 6 20 40 34 -0.04 73 0 0 19 55 2 1 28 1.2 52 108 6 19 27 20 20 22 45 19 24 46 20 25 19 -0.04 74 0 0 19 39 24 1 28 3.4 53 109 7 19 11 39 20 7 9 19 9 5 20 9 43 -0.04 75 0 0 19 23 24 1 28 5.7 54 109 8 18 55 37 19 51 12 18 53 2 19 53 47 -0.04 76 0 0 19 7 4 1 28 8.0 55 109 9 18 39 14 19 34 54 18 36 39 19 37 29 -0.04 77 0 0 18 50 23 1 28 10.4 56 110 10 18 22 31 19 18 16 18 19 56 19 20 51 -0.04 78 0 0 18 33 22 1 28 12.8 57 110 11 18 5 27 19 1 17 18 2 52 19 3 52 -0.04 79 0 0 18 16 0 1 28 15.2 58 111 12 17 48 3 18 43 58 17 45 27 18 46 34 -0.04 80 0 0 17 58 19 1 28 17.6 59 111 13 17 30 19 18 26 19 17 27 43 18 28 55 -0.04 81 0 0 17 40 17 1 28 20.1 60 111 14 17 12 15 18 8 20 17 9 39 18 10 56 -0.04 82 0 0 17 21 56 1 28 22.6 61 112 15 16 53 51 17 50 2 16 51 15 17 52 38 -0.04 83 0 0 17 3 16 1 28 25.2 62 112 16 16 35 9 17 31 24 16 32 32 17 34 0 -0.04 84 0 0 16 44 16 1 28 27.8 63 113 17 16 16 7 17 12 27 16 13 30 17 15 4 -0.04 85 0 0 16 24 58 1 28 30.4 64 113 18 15 56 46 16 53 11 15 54 9 16 55 48 -0.04 86 0 0 16 5 21 1 28 33.1 65 114 19 15 37 6 16 33 36 15 34 29 16 36 14 -0.04 87 0 0 15 45 26 1 28 35.7 66 114 20 15 17 8 16 13 44 15 14 31 16 16 21 -0.04 88 0 0 15 25 12 1 28 38.4 67 115 21 14 56 53 15 53 33 14 54 15 15 56 11 -0.04 89 0 0 15 4 41 1 28 41.2 68 115 22 14 36 19 15 33 4 14 33 41 15 35 42 -0.04 90 0 0 14 43 53 1 28 43.9 69 116 23 14 15 29 15 12 18 14 12 50 15 14 56 -0.04 91 0 0 14 22 48 1 28 46.7 70 116 24 13 54 21 14 51 15 13 51 42 14 53 54 -0.04 92 0 0 14 1 26 1 28 49.6 72 117 25 13 32 57 14 29 55 13 30 18 14 32 34 -0.04 93 0 0 13 39 47 1 28 52.4 73 118 26 13 11 16 14 8 20 13 8 37 14 10 58 -0.04 94 0 0 13 17 53 1 28 55.3 74 118 27 12 49 20 13 46 28 12 46 41 13 49 7 -0.04 95 0 0 12 55 44 1 28 58.2 75 119 28 12 27 8 13 24 20 12 24 29 13 26 59 -0.04 96 0 0 12 33 19 1 29 1.1 76 120 29 12 4 41 13 1 58 12 2 2 13 4 37 -0.04 97 0 0 12 10 40 1 29 4.0 77 121 30 11 42 0 12 39 20 11 39 20 12 42 0 -0.04 98 0 0 11 47 46 1 29 7.0 78 122 31 11 19 4 12 16 29 11 16 24 12 19 9 -0.04 99 0 0 11 24 39 1 29 10.0 79 123 32 10 55 55 11 53 24 10 53 15 11 56 4 -0.04 100 0 0 11 1 19 1 29 12.9 80 125 33 10 32 33 11 30 5 10 29 52 11 32 45 -0.04 101 0 0 10 37 45 1 29 16.0 81 126 34 10 8 58 11 6 34 10 6 17 11 9 14 -0.04 102 0 0 10 14 0 1 29 19.0 82 128 35 9 45 10 10 42 50 9 42 30 10 45 31 -0.04 103 0 0 9 50 3 1 29 22.0 83 131 36 9 21 12 10 18 54 9 18 31 10 21 35 -0.04 104 0 0 9 25 54 1 29 25.1 84 135 37 8 57 2 9 54 48 8 54 21 9 57 29 -0.04 105 0 0 9 1 35 1 29 28.1 85 140 38 8 32 41 9 30 30 8 30 0 9 33 11 -0.04 106 0 0 8 37 6 1 29 31.2 86 147 40 8 8 11 9 6 3 8 5 30 9 8 44 -0.04 107 0 0 8 12 28 1 29 34.3 87 158 41 7 43 31 8 41 25 7 40 50 8 44 7 -0.04 108 0 0 7 47 40 1 29 37.4 87 175 42 7 18 42 8 16 39 7 16 1 8 19 20 -0.04 109 0 0 7 22 44 1 29 40.5 88 199 43 6 53 45 7 51 44 6 51 4 7 54 26 -0.04 110 0 0 6 57 41 1 29 43.6 87 224 44 6 28 40 7 26 42 6 25 59 7 29 23 -0.04 111 0 0 6 32 30 1 29 46.7 87 243 45 6 3 29 7 1 32 6 0 47 7 4 14 -0.04 112 0 0 6 7 13 1 29 49.8 86 256 46 5 38 10 6 36 16 5 35 29 6 38 57 -0.04 113 0 0 5 41 50 1 29 53.0 85 264 47 5 12 46 6 10 53 5 10 5 6 13 35 -0.04 114 0 0 5 16 21 1 29 56.1 84 269 48 4 47 17 5 45 26 4 44 35 5 48 7 -0.04 115 0 0 4 50 48 1 29 59.2 83 273 49 4 21 44 5 19 53 4 19 2 5 22 35 -0.04 116 0 0 4 25 11 1 30 2.3 82 275 50 3 56 6 4 54 17 3 53 24 4 56 59 -0.04 117 0 0 3 59 31 1 30 5.4 81 278 51 3 30 26 4 28 37 3 27 44 4 31 19 -0.04 118 0 0 3 33 48 1 30 8.5 80 279 52 3 4 42 4 2 54 3 2 0 4 5 36 -0.04 119 0 0 3 8 3 1 30 11.6 79 281 54 2 38 57 3 37 9 2 36 15 3 39 51 -0.04 120 0 0 2 42 17 1 30 14.6 78 282 55 2 13 11 3 11 23 2 10 29 3 14 5 -0.04 121 0 0 2 16 30 1 30 17.7 77 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288 82 - 8 28 45 - 7 31 34 - 8 31 24 - 7 28 55 -0.05 147 0 0 - 8 22 34 1 31 28.8 49 288 82 - 8 51 7 - 7 54 0 - 8 53 46 - 7 51 21 -0.05 148 0 0 - 8 44 42 1 31 31.1 48 287 83 - 9 13 13 - 8 16 11 - 9 15 52 - 8 13 32 -0.05 149 0 0 - 9 6 35 1 31 33.3 47 287 84 - 9 35 4 - 8 38 6 - 9 37 42 - 8 35 27 -0.05 150 0 0 - 9 28 12 1 31 35.5 45 287 84 - 9 56 38 - 8 59 45 - 9 59 16 - 8 57 7 -0.05 151 0 0 - 9 49 32 1 31 37.6 44 287 85 -10 17 56 - 9 21 8 -10 20 34 - 9 18 30 -0.05 152 0 0 -10 10 36 1 31 39.7 43 287 85 -10 38 58 - 9 42 14 -10 41 36 - 9 39 36 -0.05 153 0 0 -10 31 23 1 31 41.8 42 287 85 -10 59 42 -10 3 3 -11 2 20 -10 0 25 -0.05 154 0 0 -10 51 52 1 31 43.8 41 287 85 -11 20 9 -10 23 35 -11 22 46 -10 20 57 -0.05 155 0 0 -11 12 3 1 31 45.7 40 287 84 -11 40 17 -10 43 48 -11 42 55 -10 41 11 -0.05 156 0 0 -11 31 56 1 31 47.6 39 286 84 -12 0 8 -11 3 44 -12 2 45 -11 1 7 -0.05 157 0 0 -11 51 31 1 31 49.5 38 286 83 -12 19 40 -11 23 21 -12 22 17 -11 20 44 -0.05 158 0 0 -12 10 47 1 31 51.3 37 286 82 -12 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-165 0 0 -19 55 41 1 32 24.4 1 276 48 -20 22 33 -19 28 49 -20 25 2 -19 26 20 -0.13 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 477-046963 * constellation : Sextans * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 46 06.9378 DE: +05 12 38.353 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 46 06.9379 DE: +05 12 38.353 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (345) Tercidina asteroid class: approx. diameter [km]: 99 approx. diameter ["]: 0.049 distance from Earth [AU]: 2.76930 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#136 date of fit: 2023 Feb 09 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): 0.012", 0.002", 107.317° remarks: * orbital elements for (345)Tercidina : Mean anomaly = 39.9305311214 deg Arg. of pericenter = 230.0919935706 deg Long. of node = 212.5767602424 deg Inclination = 9.7443155720 deg Eccentricity = 0.0614568886 Semimajor axis = 2.3249720936 AU Perihelion dist = 2.1820865426 AU Mag: H = 8.98, G = 0.10 Epoch of elements : MJD 60590.06227995 TDT (2024 Oct 07.0623) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1362023Feb09,2.53,2024,10,7,1.494718,0.015913,0.037836,20.348419,-8.347523,-0.003971,0.000883,-0.000001,0.000001 108.2338,5.0990,154.53,-5.63,False UCAC4 477-046963,9.76859378,5.2106538,11.81,11.48,11.30,0.0,0,,9.78993904,5.0989602,2.53,2.29,0,0,0 345,Tercidina,13.90,98.554,2.7693,0,0,4.325,-26.51,,5.4,0 0,39.6352,2024,10,6,230.0920,212.5768,9.7443,0.06146,2.32497,2.18209,8.98,5.0,0.15 1.046,0.0120,0.0020,107,0.0023,Known errors,1.17,0,-1,-1 20241007_046963,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:47 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org