IOTA/IOTA-ES occultation update for (114) Kassandra / TYC 4949-00454-1 event on 2023 Mar 14, 03:11 UT Visible from South America Summary ------- On 2023 Mar 14 UT, the 97.6 km diameter asteroid (114) Kassandra will occult a 11.6 mag star in the constellation Virgo for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.67 mag to 11.45 mag (the magnitude of the asteroid) for at most 11.800 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: 2023 Mar 14, 02:59 - 2023 Mar 14, 03:23 * geocentric midpoint of event [JD]: 2460017.63274167 * magnitude of target star: 11.62 * magnitude drop [mag]: 0.67 * estimated maximum duration [s]: 11.800 * Moon: 60 % sunlit, 60° distance * Sun: 161° distance * rough path description: South America Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 108 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.031, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.033", 0.003", 112°) * approx speed of asteroid's shadow [km/s]: 8.2741 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4949-00454-1 by 114 Kassandra on 2023 Mar 14 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 -119 0 0 12 2 16 3 22 47.5 1 92 -19 12 31 23 11 33 2 12 36 44 11 27 37 .... -118 0 0 11 59 11 3 22 47.1 2 92 -20 12 28 19 11 29 56 12 33 40 11 24 32 0.35 -117 0 0 11 55 25 3 22 46.5 3 93 -21 12 24 34 11 26 10 12 29 56 11 20 45 0.39 -116 0 0 11 50 59 3 22 45.7 4 93 -22 12 20 8 11 21 42 12 25 30 11 16 18 0.41 -115 0 0 11 45 52 3 22 44.6 5 93 -23 12 15 3 11 16 34 12 20 25 11 11 9 0.42 -114 0 0 11 40 4 3 22 43.3 6 93 -24 12 9 17 11 10 45 12 14 39 11 5 20 0.43 -113 0 0 11 33 36 3 22 41.7 7 93 -25 12 2 50 11 4 15 12 8 13 10 58 50 0.43 -112 0 0 11 26 28 3 22 39.9 8 94 -26 11 55 44 10 57 5 12 1 7 10 51 39 0.43 -111 0 0 11 18 39 3 22 37.8 9 94 -27 11 47 57 10 49 14 11 53 21 10 43 47 0.44 -110 0 0 11 10 10 3 22 35.5 10 94 -28 11 39 30 10 40 42 11 44 55 10 35 15 0.44 -109 0 0 11 1 0 3 22 32.9 11 94 -29 11 30 23 10 31 30 11 35 48 10 26 3 0.44 -108 0 0 10 51 10 3 22 30.1 12 94 -30 11 20 36 10 21 37 11 26 1 10 16 9 0.44 -107 0 0 10 40 40 3 22 27.0 13 95 -31 11 10 9 10 11 4 11 15 35 10 5 35 0.44 -106 0 0 10 29 29 3 22 23.7 14 95 -32 10 59 2 9 59 50 11 4 28 9 54 21 0.44 -105 0 0 10 17 39 3 22 20.1 15 95 -33 10 47 14 9 47 56 10 52 41 9 42 26 0.44 -104 0 0 10 5 7 3 22 16.3 16 95 -34 10 34 47 9 35 21 10 40 14 9 29 50 0.44 -103 0 0 9 51 56 3 22 12.3 17 95 -35 10 21 39 9 22 5 10 27 8 9 16 34 0.44 -102 0 0 9 38 4 3 22 7.9 18 95 -36 10 7 52 9 8 10 10 13 21 9 2 38 0.44 -101 0 0 9 23 32 3 22 3.4 19 95 -37 9 53 24 8 53 33 9 58 54 8 48 1 0.44 -100 0 0 9 8 20 3 21 58.5 19 95 -38 9 38 16 8 38 16 9 43 47 8 32 43 0.44 - 99 0 0 8 52 27 3 21 53.5 20 96 -39 9 22 28 8 22 19 9 28 0 8 16 45 0.44 - 98 0 0 8 35 54 3 21 48.1 21 96 -40 9 6 0 8 5 41 9 11 32 8 0 6 0.44 - 97 0 0 8 18 41 3 21 42.5 22 96 -41 8 48 52 7 48 23 8 54 25 7 42 47 0.44 - 96 0 0 8 0 48 3 21 36.7 23 96 -42 8 31 4 7 30 24 8 36 38 7 24 47 0.44 - 95 0 0 7 42 14 3 21 30.6 24 96 -43 8 12 36 7 11 45 8 18 11 7 6 7 0.44 - 94 0 0 7 23 1 3 21 24.2 25 96 -44 7 53 28 6 52 26 7 59 4 6 46 47 0.44 - 93 0 0 7 3 7 3 21 17.6 26 96 -45 7 33 39 6 32 26 7 39 17 6 26 46 0.44 - 92 0 0 6 42 32 3 21 10.8 27 96 -46 7 13 11 6 11 46 7 18 50 6 6 4 0.44 - 91 0 0 6 21 18 3 21 3.6 28 96 -47 6 52 3 5 50 25 6 57 43 5 44 43 0.44 - 90 0 0 5 59 24 3 20 56.3 29 96 -48 6 30 15 5 28 25 6 35 56 5 22 41 0.44 - 89 0 0 5 36 50 3 20 48.6 30 96 -49 6 7 47 5 5 44 6 13 29 4 59 59 0.44 - 88 0 0 5 13 36 3 20 40.7 31 96 -50 5 44 40 4 42 23 5 50 23 4 36 37 0.44 - 87 0 0 4 49 42 3 20 32.6 32 95 -51 5 20 53 4 18 22 5 26 37 4 12 35 0.44 - 86 0 0 4 25 8 3 20 24.1 33 95 -52 4 56 26 3 53 42 5 2 12 3 47 53 0.44 - 85 0 0 3 59 55 3 20 15.5 34 95 -53 4 31 20 3 28 21 4 37 7 3 22 31 0.44 - 84 0 0 3 34 2 3 20 6.6 35 95 -54 4 5 35 3 2 21 4 11 23 2 56 30 0.44 - 83 0 0 3 7 31 3 19 57.4 36 95 -55 3 39 10 2 35 42 3 45 0 2 29 49 0.44 - 82 0 0 2 40 20 3 19 47.9 37 95 -56 3 12 7 2 8 24 3 17 58 2 2 29 0.44 - 81 0 0 2 12 30 3 19 38.3 38 94 -57 2 44 25 1 40 26 2 50 17 1 34 30 0.44 - 80 0 0 1 44 2 3 19 28.3 39 94 -58 2 16 4 1 11 50 2 21 58 1 5 52 0.44 - 79 0 0 1 14 55 3 19 18.1 40 94 -58 1 47 6 0 42 35 1 53 1 0 36 36 0.44 - 78 0 0 0 45 10 3 19 7.7 41 93 -59 1 17 29 0 12 42 1 23 26 0 6 42 0.44 - 77 0 0 0 14 47 3 18 57.0 42 93 -60 0 47 14 - 0 17 49 0 53 12 - 0 23 51 0.44 - 76 0 0 - 0 16 13 3 18 46.1 43 93 -61 0 16 22 - 0 48 58 0 22 22 - 0 55 1 0.45 - 75 0 0 - 0 47 50 3 18 34.9 44 92 -62 - 0 15 7 - 1 20 43 - 0 9 6 - 1 26 49 0.45 - 74 0 0 - 1 20 4 3 18 23.5 45 92 -63 - 0 47 12 - 1 53 6 - 0 41 10 - 1 59 13 0.45 - 73 0 0 - 1 52 55 3 18 11.9 46 91 -64 - 1 19 54 - 2 26 5 - 1 13 50 - 2 32 14 0.45 - 72 0 0 - 2 26 21 3 18 0.0 47 90 -65 - 1 53 12 - 2 59 40 - 1 47 6 - 3 5 50 0.45 - 71 0 0 - 3 0 23 3 17 47.9 48 90 -65 - 2 27 5 - 3 33 51 - 2 20 57 - 3 40 2 0.45 - 70 0 0 - 3 34 59 3 17 35.6 49 89 -66 - 3 1 32 - 4 8 36 - 2 55 23 - 4 14 49 0.45 - 69 0 0 - 4 10 10 3 17 23.1 50 88 -67 - 3 36 34 - 4 43 56 - 3 30 24 - 4 50 11 0.45 - 68 0 0 - 4 45 54 3 17 10.3 51 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51 5 -20 29 53 -21 58 0 0.47 - 43 0 0 -21 58 15 3 11 5.1 65 40 -65 -21 21 5 -22 35 41 -21 14 15 -22 42 37 0.47 - 42 0 0 -22 42 48 3 10 49.8 65 37 -64 -22 5 31 -23 20 20 -21 58 40 -23 27 17 0.47 - 41 0 0 -23 27 23 3 10 34.5 65 34 -64 -22 50 0 -24 5 1 -22 43 8 -24 11 59 0.47 - 40 0 0 -24 11 58 3 10 19.3 65 31 -63 -23 34 30 -24 49 42 -23 27 37 -24 56 41 0.47 - 39 0 0 -24 56 32 3 10 4.2 64 29 -62 -24 18 59 -25 34 21 -24 12 5 -25 41 21 0.47 - 38 0 0 -25 41 4 3 9 49.2 64 26 -61 -25 3 26 -26 18 57 -24 56 31 -26 25 59 0.47 - 37 0 0 -26 25 31 3 9 34.2 64 23 -60 -25 47 48 -27 3 29 -25 40 52 -27 10 31 0.47 - 36 0 0 -27 9 52 3 9 19.4 63 21 -59 -26 32 5 -27 47 54 -26 25 9 -27 54 57 0.47 - 35 0 0 -27 54 5 3 9 4.7 63 18 -58 -27 16 15 -28 32 11 -27 9 18 -28 39 15 0.47 - 34 0 0 -28 38 9 3 8 50.1 63 16 -57 -28 0 16 -29 16 19 -27 53 18 -29 23 23 0.47 - 33 0 0 -29 22 3 3 8 35.6 62 13 -56 -28 44 6 -30 0 15 -28 37 8 -30 7 20 0.48 - 32 0 0 -30 5 44 3 8 21.3 62 11 -55 -29 27 44 -30 43 59 -29 20 46 -30 51 4 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32.8 53 348 -42 -38 26 0 -39 42 0 -38 19 3 -39 49 4 0.48 - 18 0 0 -39 42 14 3 5 21.4 52 347 -41 -39 4 26 -40 20 18 -38 57 30 -40 27 22 0.48 - 17 0 0 -40 20 5 3 5 10.2 51 346 -41 -39 42 21 -40 58 5 -39 35 25 -41 5 8 0.48 - 16 0 0 -40 57 24 3 4 59.3 50 344 -40 -40 19 45 -41 35 20 -40 12 50 -41 42 21 0.48 - 15 0 0 -41 34 10 3 4 48.6 49 343 -39 -40 56 36 -42 12 1 -40 49 42 -42 19 1 0.48 - 14 0 0 -42 10 23 3 4 38.1 49 342 -38 -41 32 54 -42 48 8 -41 26 1 -42 55 8 0.48 - 13 0 0 -42 46 2 3 4 27.9 48 341 -37 -42 8 38 -43 23 41 -42 1 46 -43 30 39 0.48 - 12 0 0 -43 21 6 3 4 18.0 47 340 -36 -42 43 48 -43 58 39 -42 36 57 -44 5 36 0.48 - 11 0 0 -43 55 35 3 4 8.2 46 339 -35 -43 18 24 -44 33 1 -43 11 34 -44 39 57 0.49 - 10 0 0 -44 29 28 3 3 58.8 45 337 -34 -43 52 24 -45 6 47 -43 45 35 -45 13 42 0.49 - 9 0 0 -45 2 46 3 3 49.5 45 336 -33 -44 25 48 -45 39 58 -44 19 1 -45 46 51 0.49 - 8 0 0 -45 35 27 3 3 40.5 44 335 -32 -44 58 37 -46 12 31 -44 51 51 -46 19 23 0.49 - 7 0 0 -46 7 32 3 3 31.7 43 334 -32 -45 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42 3 -56 47 50 -55 36 1 -56 53 56 0.48 19 0 0 -56 31 54 3 0 54.8 25 310 -13 -55 59 14 -57 4 43 -55 53 14 -57 10 47 0.48 20 0 0 -56 48 26 3 0 51.0 25 309 -12 -56 15 56 -57 21 6 -56 9 57 -57 27 8 0.48 21 0 0 -57 4 28 3 0 47.3 24 308 -12 -56 32 7 -57 36 59 -56 26 10 -57 43 0 0.48 22 0 0 -57 20 2 3 0 43.7 24 307 -11 -56 47 50 -57 52 24 -56 41 54 -57 58 23 0.48 23 0 0 -57 35 7 3 0 40.3 23 306 -10 -57 3 3 -58 7 20 -56 57 9 -58 13 18 0.48 24 0 0 -57 49 43 3 0 37.0 22 306 -10 -57 17 48 -58 21 48 -57 11 56 -58 27 44 0.48 25 0 0 -58 3 52 3 0 33.7 22 305 -9 -57 32 5 -58 35 48 -57 26 15 -58 41 42 0.48 26 0 0 -58 17 34 3 0 30.6 21 304 -9 -57 45 55 -58 49 21 -57 40 6 -58 55 14 0.48 27 0 0 -58 30 48 3 0 27.6 21 303 -8 -57 59 17 -59 2 27 -57 53 29 -59 8 18 0.48 28 0 0 -58 43 35 3 0 24.7 20 302 -8 -58 12 13 -59 15 7 -58 6 26 -59 20 57 0.48 29 0 0 -58 55 57 3 0 22.0 20 301 -7 -58 24 42 -59 27 20 -58 18 57 -59 33 9 0.48 30 0 0 -59 7 52 3 0 19.3 19 300 -6 -58 36 45 -59 39 8 -58 31 1 -59 44 55 0.48 31 0 0 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6 -61 34 23 -62 32 40 -61 29 2 -62 38 4 0.48 57 0 0 -62 5 31 2 59 36.4 6 277 7 -61 36 28 -62 34 42 -61 31 7 -62 40 6 0.48 58 0 0 -62 7 15 2 59 35.7 5 276 7 -61 38 13 -62 36 24 -61 32 52 -62 41 47 0.49 59 0 0 -62 8 39 2 59 35.1 5 275 8 -61 39 38 -62 37 47 -61 34 17 -62 43 10 0.49 60 0 0 -62 9 43 2 59 34.5 4 274 8 -61 40 43 -62 38 50 -61 35 23 -62 44 13 0.49 61 0 0 -62 10 28 2 59 34.0 4 273 9 -61 41 29 -62 39 34 -61 36 9 -62 44 57 0.49 62 0 0 -62 10 54 2 59 33.6 3 272 9 -61 41 55 -62 39 59 -61 36 35 -62 45 22 0.50 63 0 0 -62 11 0 2 59 33.2 3 271 10 -61 42 2 -62 40 5 -61 36 42 -62 45 28 0.50 64 0 0 -62 10 47 2 59 32.9 2 270 10 -61 41 48 -62 39 52 -61 36 28 -62 45 15 0.51 65 0 0 -62 10 14 2 59 32.6 2 269 10 -61 41 15 -62 39 19 -61 35 55 -62 44 42 0.52 66 0 0 -62 9 21 2 59 32.4 2 269 11 -61 40 23 -62 38 27 -61 35 3 -62 43 50 0.54 67 0 0 -62 8 10 2 59 32.2 1 268 11 -61 39 10 -62 37 16 -61 33 50 -62 42 39 0.58 68 0 0 -62 6 38 2 59 32.1 1 267 12 -61 37 37 -62 35 45 -61 32 17 -62 41 8 0.67 69 0 0 -62 4 47 2 59 32.1 0 266 12 -61 35 45 -62 33 55 -61 30 24 -62 39 18 1.36 Uncertainty in time = +/- 4 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 4949-00454-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 46 17.1964 DE: -01 53 58.527 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 46 17.1965 DE: -01 53 58.527 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.600,0.500) * V mag [mag]: 11.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (114) Kassandra asteroid class: approx. diameter [km]: 98 approx. diameter ["]: 0.098 distance from Earth [AU]: 1.37390 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#141 date of fit: 2023 Feb 07 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): 0.033", 0.003", 111.902° remarks: * orbital elements for (114)Kassandra : Mean anomaly = 20.4259314097 deg Arg. of pericenter = 352.6556264750 deg Long. of node = 164.0665402788 deg Inclination = 4.9446350359 deg Eccentricity = 0.1382977762 Semimajor axis = 2.6767032701 AU Perihelion dist = 2.3065211603 AU Mag: H = 8.35, G = 0.15 Epoch of elements : MJD 60017.13277778 TDT (2023 Mar 14.1328) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1412023Feb07,11.80,2023,3,14,3.185800,-0.253647,-0.337013,-3.731834,2.807745,-0.001768,0.000465,0.000001,-0.000001 -27.4011,-2.0276,134.55,-2.67,False TYC 4949-00454-1,12.77144345,-1.8995908,0.00,11.62,0.00,0.0,0,,12.79147478,-2.0276138,0.67,0.00,0,0,0 114,Kassandra,11.45,97.6,1.3739,0,0,-1.593,17.97,,4.8,0 0,20.3960,2023,3,14,352.6556,164.0665,4.9446,0.13830,2.67670,2.30652,8.36,5.0,0.15 1.092,0.0333,0.0027,112,0.0090,Known errors,-1.00,-1,-1,-1 20230314_0454-1,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org