IOTA/IOTA-ES occultation update for (73) Klytia / TYC 6889-01398-1 event on 2024 Nov 12, 20:37 UT Visible from Summary ------- On 2024 Nov 12 UT, the 45.341 km diameter asteroid (73) Klytia will occult a 11.8 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.86 mag to 14.56 mag (the magnitude of the asteroid) for at most 1.430 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 Nov 12, 20:34 - 2024 Nov 12, 20:41 * geocentric midpoint of event [JD]: 2460627.35964354 * magnitude of target star: 11.78 * magnitude drop [mag]: 2.86 * estimated maximum duration [s]: 1.430 * Moon: 87 % sunlit, 77° distance * Sun: 61° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 47 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.002", 81°) * approx speed of asteroid's shadow [km/s]: 31.6125 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6889-01398-1 by 73 Klytia on 2024 Nov 12 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 -155 0 0 3 28 18 20 34 38.6 0 113 59 3 14 27 3 42 10 3 11 34 3 45 3 .... -154 0 0 3 2 26 20 34 38.6 1 113 60 2 48 36 3 16 17 2 45 44 3 19 9 -0.06 -153 0 0 2 36 51 20 34 38.8 2 114 61 2 23 3 2 50 41 2 20 11 2 53 33 -0.15 -152 0 0 2 11 34 20 34 39.0 4 114 62 1 57 47 2 25 22 1 54 56 2 28 14 -0.19 -151 0 0 1 46 35 20 34 39.2 5 114 63 1 32 50 2 0 22 1 29 59 2 3 13 -0.21 -150 0 0 1 21 55 20 34 39.6 6 114 64 1 8 11 1 35 40 1 5 20 1 38 31 -0.22 -149 0 0 0 57 34 20 34 40.0 7 114 65 0 43 52 1 11 17 0 41 1 1 14 8 -0.23 -148 0 0 0 33 33 20 34 40.5 8 114 66 0 19 52 0 47 14 0 17 2 0 50 5 -0.23 -147 0 0 0 9 52 20 34 41.1 9 114 67 - 0 3 48 0 23 32 - 0 6 37 0 26 22 -0.24 -146 0 0 - 0 13 29 20 34 41.7 10 114 68 - 0 27 6 0 0 10 - 0 29 56 0 3 0 -0.24 -145 0 0 - 0 36 28 20 34 42.5 11 114 69 - 0 50 4 - 0 22 51 - 0 52 53 - 0 20 1 -0.24 -144 0 0 - 0 59 6 20 34 43.2 12 114 70 - 1 12 40 - 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5 13 34 - 4 47 2 - 5 16 19 - 4 44 17 -0.26 -131 0 0 - 5 17 43 20 34 59.5 26 113 77 - 5 30 58 - 5 4 28 - 5 33 42 - 5 1 43 -0.26 -130 0 0 - 5 34 42 20 35 1.2 27 113 77 - 5 47 55 - 5 21 29 - 5 50 40 - 5 18 44 -0.26 -129 0 0 - 5 51 15 20 35 2.9 28 113 77 - 6 4 27 - 5 38 3 - 6 7 11 - 5 35 19 -0.26 -128 0 0 - 6 7 22 20 35 4.7 29 113 77 - 6 20 32 - 5 54 11 - 6 23 15 - 5 51 27 -0.26 -127 0 0 - 6 23 2 20 35 6.6 30 113 77 - 6 36 10 - 6 9 52 - 6 38 54 - 6 7 8 -0.26 -126 0 0 - 6 38 15 20 35 8.5 31 113 77 - 6 51 22 - 6 25 7 - 6 54 5 - 6 22 23 -0.26 -125 0 0 - 6 53 1 20 35 10.5 32 113 77 - 7 6 7 - 6 39 54 - 7 8 50 - 6 37 11 -0.26 -124 0 0 - 7 7 20 20 35 12.5 33 113 76 - 7 20 25 - 6 54 15 - 7 23 7 - 6 51 32 -0.26 -123 0 0 - 7 21 12 20 35 14.6 34 113 76 - 7 34 15 - 7 8 8 - 7 36 58 - 7 5 25 -0.26 -122 0 0 - 7 34 37 20 35 16.7 35 113 75 - 7 47 39 - 7 21 34 - 7 50 21 - 7 18 51 -0.26 -121 0 0 - 7 47 34 20 35 18.8 36 113 75 - 8 0 35 - 7 34 32 - 8 3 17 - 7 31 50 -0.26 -120 0 0 - 8 0 4 20 35 21.1 37 113 74 - 8 13 3 - 7 47 3 - 8 15 45 - 7 44 21 -0.26 -119 0 0 - 8 12 6 20 35 23.3 38 113 73 - 8 25 4 - 7 59 6 - 8 27 46 - 7 56 25 -0.26 -118 0 0 - 8 23 40 20 35 25.6 39 113 73 - 8 36 37 - 8 10 42 - 8 39 18 - 8 8 0 -0.27 -117 0 0 - 8 34 46 20 35 28.0 40 113 72 - 8 47 43 - 8 21 49 - 8 50 24 - 8 19 8 -0.27 -116 0 0 - 8 45 25 20 35 30.4 41 113 71 - 8 58 20 - 8 32 29 - 9 1 1 - 8 29 48 -0.27 -115 0 0 - 8 55 35 20 35 32.8 42 114 70 - 9 8 29 - 8 42 40 - 9 11 10 - 8 39 59 -0.27 -114 0 0 - 9 5 17 20 35 35.3 43 114 70 - 9 18 11 - 8 52 23 - 9 20 51 - 8 49 43 -0.27 -113 0 0 - 9 14 32 20 35 37.9 44 114 69 - 9 27 24 - 9 1 38 - 9 30 4 - 8 58 58 -0.27 -112 0 0 - 9 23 18 20 35 40.4 45 114 68 - 9 36 9 - 9 10 25 - 9 38 49 - 9 7 45 -0.27 -111 0 0 - 9 31 35 20 35 43.0 46 114 67 - 9 44 26 - 9 18 44 - 9 47 6 - 9 16 4 -0.27 -110 0 0 - 9 39 25 20 35 45.7 47 114 66 - 9 52 15 - 9 26 34 - 9 54 54 - 9 23 54 -0.27 -109 0 0 - 9 46 46 20 35 48.4 48 114 65 - 9 59 35 - 9 33 56 -10 2 14 - 9 31 16 -0.27 -108 0 0 - 9 53 38 20 35 51.1 49 114 65 -10 6 27 - 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7 0 0 16 10 31 20 40 57.4 18 238 -40 15 56 16 16 24 48 15 53 18 16 27 46 -0.26 - 6 0 0 16 39 57 20 40 58.6 17 238 -41 16 25 41 16 54 13 16 22 43 16 57 11 -0.26 - 5 0 0 17 9 17 20 40 59.7 16 239 -42 16 55 2 17 23 34 16 52 4 17 26 32 -0.26 - 4 0 0 17 38 33 20 41 0.7 15 239 -43 17 24 17 17 52 49 17 21 20 17 55 47 -0.26 - 3 0 0 18 7 42 20 41 1.7 14 239 -44 17 53 26 18 21 58 17 50 29 18 24 56 -0.26 - 2 0 0 18 36 44 20 41 2.6 13 240 -45 18 22 29 18 51 0 18 19 32 18 53 58 -0.26 - 1 0 0 19 5 39 20 41 3.4 12 240 -46 18 51 24 19 19 54 18 48 27 19 22 52 -0.26 0 0 0 19 34 25 20 41 4.2 11 240 -47 19 20 11 19 48 40 19 17 13 19 51 38 -0.26 1 0 0 20 3 2 20 41 4.9 10 241 -48 19 48 48 20 17 17 19 45 51 20 20 14 -0.26 2 0 0 20 31 29 20 41 5.5 9 241 -49 20 17 16 20 45 44 20 14 19 20 48 41 -0.26 3 0 0 20 59 46 20 41 6.0 8 241 -50 20 45 33 21 14 0 20 42 36 21 16 57 -0.26 4 0 0 21 27 51 20 41 6.5 7 242 -51 21 13 39 21 42 5 21 10 43 21 45 2 -0.26 5 0 0 21 55 45 20 41 6.9 6 242 -52 21 41 34 22 9 58 21 38 37 22 12 55 -0.26 6 0 0 22 23 26 20 41 7.2 4 243 -52 22 9 16 22 37 38 22 6 19 22 40 35 -0.26 7 0 0 22 50 54 20 41 7.5 3 243 -53 22 36 44 23 5 5 22 33 48 23 8 2 -0.26 8 0 0 23 18 9 20 41 7.7 2 243 -54 23 4 0 23 32 18 23 1 4 23 35 15 -0.26 9 0 0 23 45 8 20 41 7.8 1 244 -55 23 31 1 23 59 17 23 28 5 24 2 14 -0.25 10 0 0 24 11 54 20 41 7.8 0 244 -56 23 57 47 24 26 2 23 54 51 24 28 58 -0.22 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6889-01398-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 35 49.7238 DE: -23 23 24.398 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 35 49.7237 DE: -23 23 24.398 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (73) Klytia asteroid class: approx. diameter [km]: 45 approx. diameter ["]: 0.021 distance from Earth [AU]: 3.03590 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 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): 0.009", 0.002", 80.552° remarks: * orbital elements for (73)Klytia : Mean anomaly = 251.9164216434 deg Arg. of pericenter = 56.3810095571 deg Long. of node = 6.8340587681 deg Inclination = 2.3694513722 deg Eccentricity = 0.0422577810 Semimajor axis = 2.6644676585 AU Perihelion dist = 2.5518731677 AU Mag: H = 9.03, G = 0.15 Epoch of elements : MJD 60626.85964338 TDT (2024 Nov 12.8596) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr24,1.43,2024,11,12,20.631445,-0.051822,0.257114,17.495342,3.505042,0.005039,0.000749,-0.000001,0.000000 -67.6085,-23.3365,-133.41,-18.00,False TYC 6889-01398-1,19.59714555,-23.3901105,11.97,11.78,11.68,0.0,0,,19.62179787,-23.3365284,2.86,2.54,0,0,0 73,Klytia,14.56,45.341,3.0359,0,0,3.680,10.16,,2.4,0 0,251.7216,2024,11,12,56.3810,6.8341,2.3695,0.04226,2.66447,2.55187,9.03,5.0,0.15 1.104,0.0090,0.0021,81,0.0021,Known errors,0.87,0,-1,-1 20241112_1398-1,60140.69 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:40 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org