IOTA/IOTA-ES occultation update for (1529) Oterma / TYC 674-00040-1 event on 2024 Nov 21, 02:39 UT Visible from Summary ------- On 2024 Nov 21 UT, the 57.8371177775385 km diameter asteroid (1529) Oterma will occult a 9.7 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 4.94 mag to 14.62 mag (the magnitude of the asteroid) for at most 4.670 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: 83 * date and approx. time of event: 2024 Nov 21, 02:31 - 2024 Nov 21, 02:47 * geocentric midpoint of event [JD]: 2460635.61086537 * magnitude of target star: 9.69 * magnitude drop [mag]: 4.94 * estimated maximum duration [s]: 4.670 * Moon: 69 % sunlit, 65° distance * Sun: 171° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 66 * 1 sigma uncertainty interval [path widths]: +/- 0.63 * 1 sigma uncertainty interval [seconds]: +/- 6.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.048, +/- 0.023) * 1 sigma uncertainty ellipse (major, minor, PA): (0.050", 0.017", 72°) * approx speed of asteroid's shadow [km/s]: 12.4331 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 674-00040-1 by 1529 Oterma on 2024 Nov 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 -122 0 0 -29 21 42 2 47 6.6 0 75 -1 -29 3 3 .. .. .. -28 39 39 .. .. .. .... -121 0 0 -29 7 53 2 47 6.5 1 75 -2 -28 49 14 -29 26 35 -28 25 50 -29 50 13 0.19 -120 0 0 -28 54 3 2 47 6.3 2 74 -3 -28 35 24 -29 12 45 -28 12 1 -29 36 23 0.37 -119 0 0 -28 40 13 2 47 5.9 3 74 -4 -28 21 35 -28 58 55 -27 58 12 -29 22 33 0.43 -118 0 0 -28 26 24 2 47 5.4 4 73 -5 -28 7 46 -28 45 6 -27 44 23 -29 8 43 0.47 -117 0 0 -28 12 35 2 47 4.7 5 73 -6 -27 53 57 -28 31 17 -27 30 35 -28 54 54 0.49 -116 0 0 -27 58 48 2 47 3.9 6 72 -7 -27 40 10 -28 17 29 -27 16 47 -28 41 6 0.50 -115 0 0 -27 45 1 2 47 3.0 6 72 -7 -27 26 23 -28 3 42 -27 3 1 -28 27 19 0.51 -114 0 0 -27 31 16 2 47 1.9 7 71 -8 -27 12 39 -27 49 57 -26 49 17 -28 13 33 0.52 -113 0 0 -27 17 33 2 47 0.6 8 71 -9 -26 58 56 -27 36 13 -26 35 34 -27 59 49 0.52 -112 0 0 -27 3 51 2 46 59.2 9 71 -10 -26 45 15 -27 22 32 -26 21 54 -27 46 7 0.53 -111 0 0 -26 50 13 2 46 57.6 10 70 -11 -26 31 36 -27 8 52 -26 8 16 -27 32 27 0.53 -110 0 0 -26 36 36 2 46 55.9 11 70 -12 -26 18 0 -26 55 16 -25 54 40 -27 18 50 0.53 -109 0 0 -26 23 3 2 46 54.1 12 69 -13 -26 4 27 -26 41 42 -25 41 8 -27 5 16 0.54 -108 0 0 -26 9 33 2 46 52.1 13 69 -14 -25 50 58 -26 28 12 -25 27 39 -26 51 45 0.54 -107 0 0 -25 56 6 2 46 49.9 14 68 -15 -25 37 31 -26 14 44 -25 14 13 -26 38 17 0.54 -106 0 0 -25 42 43 2 46 47.6 15 68 -15 -25 24 9 -26 1 21 -25 0 51 -26 24 53 0.54 -105 0 0 -25 29 25 2 46 45.2 16 67 -16 -25 10 51 -25 48 2 -24 47 33 -26 11 33 0.54 -104 0 0 -25 16 10 2 46 42.6 16 67 -17 -24 57 37 -25 34 47 -24 34 20 -25 58 18 0.54 -103 0 0 -25 3 0 2 46 39.8 17 66 -18 -24 44 27 -25 21 36 -24 21 11 -25 45 7 0.54 -102 0 0 -24 49 55 2 46 37.0 18 66 -19 -24 31 23 -25 8 31 -24 8 7 -25 32 1 0.55 -101 0 0 -24 36 55 2 46 33.9 19 65 -20 -24 18 23 -24 55 31 -23 55 9 -25 18 59 0.55 -100 0 0 -24 24 1 2 46 30.8 20 65 -21 -24 5 29 -24 42 35 -23 42 15 -25 6 4 0.55 - 99 0 0 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35 11 0.57 11 0 0 -20 3 21 2 33 49.9 33 301 -25 -19 45 4 -20 21 41 -19 22 8 -20 44 51 0.57 12 0 0 -20 13 10 2 33 44.7 32 301 -24 -19 54 52 -20 31 31 -19 31 55 -20 54 41 0.57 13 0 0 -20 23 9 2 33 39.6 32 300 -23 -20 4 51 -20 41 31 -19 41 53 -21 4 42 0.57 14 0 0 -20 33 19 2 33 34.7 31 300 -22 -20 15 0 -20 51 41 -19 52 2 -21 14 54 0.57 15 0 0 -20 43 39 2 33 29.9 30 299 -21 -20 25 20 -21 2 2 -20 2 20 -21 25 16 0.57 16 0 0 -20 54 10 2 33 25.2 29 299 -20 -20 35 49 -21 12 33 -20 12 49 -21 35 47 0.57 17 0 0 -21 4 50 2 33 20.6 28 298 -19 -20 46 29 -21 23 14 -20 23 27 -21 46 29 0.57 18 0 0 -21 15 40 2 33 16.2 27 298 -18 -20 57 18 -21 34 5 -20 34 16 -21 57 20 0.57 19 0 0 -21 26 39 2 33 11.9 26 297 -18 -21 8 16 -21 45 5 -20 45 13 -22 8 21 0.57 20 0 0 -21 37 47 2 33 7.8 25 297 -17 -21 19 24 -21 56 14 -20 56 21 -22 19 32 0.57 21 0 0 -21 49 5 2 33 3.8 24 296 -16 -21 30 41 -22 7 32 -21 7 37 -22 30 51 0.57 22 0 0 -22 0 32 2 32 59.9 24 296 -15 -21 42 7 -22 18 59 -21 19 2 -22 42 19 0.57 23 0 0 -22 12 7 2 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+/- 7 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 674-00040-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 10 34.5648 DE: +12 44 12.650 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 10 34.5649 DE: +12 44 12.648 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.7 * B mag [mag]: 10.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1529) Oterma asteroid class: approx. diameter [km]: 58 approx. diameter ["]: 0.035 distance from Earth [AU]: 2.25960 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#47 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): 0.050", 0.017", 71.882° remarks: * orbital elements for (1529)Oterma : Mean anomaly = 17.2284840178 deg Arg. of pericenter = 294.5985584513 deg Long. of node = 100.5355388393 deg Inclination = 9.0642168241 deg Eccentricity = 0.2043139971 Semimajor axis = 3.9987198160 AU Perihelion dist = 3.1817253872 AU Mag: H = 10.02, G = 0.15 Epoch of elements : MJD 60635.11086284 TDT (2024 Nov 21.1109) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472023Feb11,4.67,2024,11,21,2.660769,0.007855,-0.485564,-7.016611,-0.117355,-0.000610,0.000748,0.000001,0.000000 -37.5125,12.8033,136.56,-19.99,False TYC 674-00040-1,4.17626801,12.7368472,10.02,9.69,9.51,0.1,0,K,4.19972139,12.8033112,4.95,4.68,0,0,0 1529,Oterma,14.62,58.001,2.2596,0,0,-1.866,-0.45,,3.4,0 0,17.2148,2024,11,21,294.5986,100.5355,9.0642,0.20431,3.99872,3.18173,10.01,5.0,0.15 1.629,0.0503,0.0173,72,0.0223,Known errors,1.02,0,-1,-1 20241121_0040-1,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:59 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org