IOTA/IOTA-ES occultation update for (1340) Yvette / UCAC4 561-009905 event on 2024 Oct 27, 13:38 UT Visible from Summary ------- On 2024 Oct 27 UT, the 28.2170996870769 km diameter asteroid (1340) Yvette will occult a 9.6 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.15 mag to 16.73 mag (the magnitude of the asteroid) for at most 2.750 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 27, 13:29 - 2024 Oct 27, 13:47 * geocentric midpoint of event [JD]: 2460611.06823380 * magnitude of target star: 9.58 * magnitude drop [mag]: 7.15 * estimated maximum duration [s]: 2.750 * Moon: 21 % sunlit, 92° distance * Sun: 147° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.001", 81°) * approx speed of asteroid's shadow [km/s]: 10.3260 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 561-009905 by 1340 Yvette on 2024 Oct 27 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 112 0 0 -38 11 58 13 46 49.6 0 61 -28 -38 1 22 -38 22 35 -37 59 21 -38 24 37 .... 113 0 0 -37 45 56 13 46 49.5 1 61 -29 -37 35 20 -37 56 34 -37 33 19 -37 58 35 0.23 114 0 0 -37 19 45 13 46 49.2 2 60 -30 -37 9 9 -37 30 23 -37 7 8 -37 32 24 0.43 115 0 0 -36 53 26 13 46 48.7 3 59 -31 -36 42 50 -37 4 4 -36 40 49 -37 6 5 0.51 116 0 0 -36 26 59 13 46 48.0 4 59 -32 -36 16 23 -36 37 37 -36 14 23 -36 39 38 0.55 117 0 0 -36 0 26 13 46 47.2 5 58 -32 -35 49 50 -36 11 3 -35 47 49 -36 13 5 0.57 118 0 0 -35 33 47 13 46 46.1 6 58 -33 -35 23 11 -35 44 24 -35 21 10 -35 46 25 0.59 119 0 0 -35 7 2 13 46 44.8 7 57 -34 -34 56 27 -35 17 39 -34 54 26 -35 19 40 0.60 120 0 0 -34 40 12 13 46 43.4 8 56 -35 -34 29 38 -34 50 49 -34 27 37 -34 52 50 0.61 121 0 0 -34 13 19 13 46 41.7 8 56 -36 -34 2 45 -34 23 55 -34 0 44 -34 25 56 0.62 122 0 0 -33 46 23 13 46 39.9 9 55 -37 -33 35 49 -33 56 58 -33 33 49 -33 58 59 0.63 123 0 0 -33 19 24 13 46 37.8 10 55 -37 -33 8 51 -33 29 59 -33 6 51 -33 32 0 0.63 124 0 0 -32 52 24 13 46 35.5 11 54 -38 -32 41 52 -33 2 59 -32 39 51 -33 4 59 0.64 125 0 0 -32 25 24 13 46 33.1 12 54 -39 -32 14 51 -32 35 57 -32 12 51 -32 37 58 0.64 126 0 0 -31 58 23 13 46 30.4 13 53 -40 -31 47 51 -32 8 55 -31 45 51 -32 10 56 0.64 127 0 0 -31 31 23 13 46 27.5 14 53 -41 -31 20 52 -31 41 55 -31 18 52 -31 43 55 0.65 128 0 0 -31 4 24 13 46 24.4 15 52 -41 -30 53 54 -31 14 55 -30 51 55 -31 16 56 0.65 129 0 0 -30 37 28 13 46 21.1 16 51 -42 -30 26 59 -30 47 58 -30 25 0 -30 49 58 0.65 130 0 0 -30 10 35 13 46 17.6 17 51 -43 -30 0 7 -30 21 4 -29 58 7 -30 23 4 0.65 131 0 0 -29 43 45 13 46 13.9 18 50 -44 -29 33 18 -29 54 14 -29 31 19 -29 56 14 0.65 132 0 0 -29 17 1 13 46 10.0 19 50 -45 -29 6 35 -29 27 28 -29 4 36 -29 29 28 0.65 133 0 0 -28 50 21 13 46 5.9 20 49 -45 -28 39 56 -29 0 48 -28 37 58 -29 2 47 0.66 134 0 0 -28 23 48 13 46 1.6 21 49 -46 -28 13 24 -28 34 13 -28 11 26 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-22 52 38 -23 16 57 1.10 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 561-009905 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 23 28.1694 DE: +22 07 02.198 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 23 28.1696 DE: +22 07 02.198 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.6 * B mag [mag]: 9.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1340) Yvette asteroid class: approx. diameter [km]: 28 approx. diameter ["]: 0.015 distance from Earth [AU]: 2.65970 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 date of fit: 2023 Feb 11 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): 0.021", 0.001", 81.066° remarks: * orbital elements for (1340)Yvette : Mean anomaly = 214.9332981689 deg Arg. of pericenter = 226.1648153586 deg Long. of node = 344.8343289700 deg Inclination = 0.4091055783 deg Eccentricity = 0.1223472173 Semimajor axis = 3.1972453832 AU Perihelion dist = 2.8060713076 AU Mag: H = 11.26, G = 0.15 Epoch of elements : MJD 60610.56822784 TDT (2024 Oct 27.5682) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Feb11,2.75,2024,10,27,13.637611,0.079201,-0.544806,-5.766572,-0.845928,-0.003269,-0.000578,0.000001,0.000000 -174.7297,22.1764,-28.61,-13.06,False UCAC4 561-009905,4.39115817,22.1172771,9.83,9.58,9.45,0.1,0,,4.41604973,22.1763731,7.15,6.83,0,0,0 1340,Yvette,16.73,28.410,2.6597,0,0,-1.373,-2.80,,2.2,0 0,214.8353,2024,10,27,226.1648,344.8343,0.4091,0.12235,3.19725,2.80607,11.26,5.0,0.15 1.095,0.0210,0.0014,81,0.0014,Known errors,0.93,0,-1,-1 20241027_009905,60140.66 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org