IOTA/IOTA-ES occultation update for (111) Ate / UCAC4 310-133854 event on 2024 Jun 18, 03:28 UT Visible from Summary ------- On 2024 Jun 18 UT, the 133.432 km diameter asteroid (111) Ate will occult a 11.5 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 1.04 mag to 12.00 mag (the magnitude of the asteroid) for at most 10.660 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 Jun 18, 03:20 - 2024 Jun 18, 03:36 * geocentric midpoint of event [JD]: 2460479.64497937 * magnitude of target star: 11.49 * magnitude drop [mag]: 1.04 * estimated maximum duration [s]: 10.660 * Moon: 84 % sunlit, 48° distance * Sun: 175° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 144 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.003", 87°) * approx speed of asteroid's shadow [km/s]: 12.5154 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 310-133854 by 111 Ate on 2024 Jun 18 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 -129 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 24 8 30 .. .. .. 24 5 13 .... -128 0 0 24 21 3 3 36 37.5 1 122 -4 25 7 16 23 35 9 25 10 36 23 31 51 .... -127 0 0 23 47 36 3 36 37.3 2 122 -5 24 33 47 23 1 42 24 37 7 22 58 25 -0.21 -126 0 0 23 14 4 3 36 36.8 3 122 -6 24 0 13 22 28 12 24 3 33 22 24 55 -0.29 -125 0 0 22 40 29 3 36 36.2 4 123 -7 23 26 36 21 54 39 23 29 56 21 51 22 -0.33 -124 0 0 22 6 52 3 36 35.4 5 123 -8 22 52 57 21 21 5 22 56 17 21 17 48 -0.35 -123 0 0 21 33 14 3 36 34.4 6 124 -9 22 19 17 20 47 29 22 22 36 20 44 13 -0.36 -122 0 0 20 59 36 3 36 33.2 7 124 -10 21 45 36 20 13 55 21 48 55 20 10 38 -0.37 -121 0 0 20 26 0 3 36 31.8 8 124 -11 21 11 56 19 40 22 21 15 15 19 37 5 -0.38 -120 0 0 19 52 26 3 36 30.2 9 125 -12 20 38 19 19 6 51 20 41 37 19 3 35 -0.38 -119 0 0 19 18 55 3 36 28.4 11 125 -13 20 4 44 18 33 24 20 8 2 18 30 8 -0.39 -118 0 0 18 45 28 3 36 26.4 12 125 -15 19 31 13 18 0 1 19 34 31 17 56 46 -0.39 -117 0 0 18 12 7 3 36 24.2 13 126 -16 18 57 48 17 26 44 19 1 6 17 23 29 -0.40 -116 0 0 17 38 53 3 36 21.8 14 126 -17 18 24 28 16 53 34 18 27 46 16 50 19 -0.40 -115 0 0 17 5 45 3 36 19.2 15 126 -18 17 51 16 16 20 32 17 54 33 16 17 17 -0.40 -114 0 0 16 32 46 3 36 16.4 16 127 -19 17 18 12 15 47 38 17 21 29 15 44 24 -0.40 -113 0 0 15 59 57 3 36 13.4 17 127 -20 16 45 17 15 14 53 16 48 34 15 11 40 -0.40 -112 0 0 15 27 17 3 36 10.3 18 127 -21 16 12 33 14 42 20 16 15 49 14 39 6 -0.41 -111 0 0 14 54 50 3 36 6.9 19 128 -22 15 39 59 14 9 57 15 43 15 14 6 44 -0.41 -110 0 0 14 22 34 3 36 3.4 20 128 -23 15 7 37 13 37 47 15 10 52 13 34 35 -0.41 -109 0 0 13 50 31 3 35 59.6 21 128 -24 14 35 28 13 5 50 14 38 43 13 2 38 -0.41 -108 0 0 13 18 42 3 35 55.7 22 128 -25 14 3 33 12 34 8 14 6 48 12 30 56 -0.41 -107 0 0 12 47 8 3 35 51.6 24 129 -27 13 31 53 12 2 40 13 35 7 11 59 28 -0.41 -106 0 0 12 15 50 3 35 47.4 25 129 -28 13 0 28 11 31 28 13 3 41 11 28 17 -0.41 -105 0 0 11 44 48 3 35 42.9 26 129 -29 12 29 19 11 0 32 12 32 32 10 57 22 -0.41 -104 0 0 11 14 3 3 35 38.3 27 130 -30 11 58 28 10 29 54 12 1 40 10 26 44 -0.41 -103 0 0 10 43 36 3 35 33.5 28 130 -31 11 27 54 9 59 34 11 31 6 9 56 24 -0.41 -102 0 0 10 13 27 3 35 28.6 29 130 -32 10 57 39 9 29 32 11 0 50 9 26 23 -0.41 -101 0 0 9 43 38 3 35 23.5 30 131 -33 10 27 43 8 59 50 10 30 53 8 56 41 -0.41 -100 0 0 9 14 9 3 35 18.2 31 131 -34 9 58 6 8 30 28 10 1 17 8 27 20 -0.41 - 99 0 0 8 45 1 3 35 12.8 32 131 -35 9 28 51 8 1 26 9 32 1 7 58 19 -0.41 - 98 0 0 8 16 14 3 35 7.3 33 132 -36 8 59 57 7 32 46 9 3 6 7 29 39 -0.41 - 97 0 0 7 47 48 3 35 1.5 34 132 -37 8 31 24 7 4 28 8 34 33 7 1 21 -0.41 - 96 0 0 7 19 45 3 34 55.7 35 132 -38 8 3 14 6 36 32 8 6 22 6 33 26 -0.41 - 95 0 0 6 52 5 3 34 49.7 36 133 -39 7 35 27 6 8 59 7 38 34 6 5 54 -0.41 - 94 0 0 6 24 49 3 34 43.6 37 133 -40 7 8 3 5 41 50 7 11 10 5 38 45 -0.41 - 93 0 0 5 57 56 3 34 37.3 38 133 -41 6 41 3 5 15 4 6 44 10 5 12 0 -0.41 - 92 0 0 5 31 28 3 34 30.9 39 134 -42 6 14 27 4 48 43 6 17 33 4 45 39 -0.41 - 91 0 0 5 5 24 3 34 24.4 40 134 -43 5 48 17 4 22 46 5 51 22 4 19 43 -0.41 - 90 0 0 4 39 46 3 34 17.8 41 134 -45 5 22 31 3 57 15 5 25 36 3 54 12 -0.41 - 89 0 0 4 14 34 3 34 11.1 42 135 -46 4 57 12 3 32 10 5 0 16 3 29 7 -0.41 - 88 0 0 3 49 47 3 34 4.2 43 135 -47 4 32 18 3 7 30 4 35 22 3 4 28 -0.41 - 87 0 0 3 25 27 3 33 57.3 44 136 -48 4 7 51 2 43 17 4 10 54 2 40 16 -0.41 - 86 0 0 3 1 33 3 33 50.2 45 136 -49 3 43 50 2 19 30 3 46 53 2 16 29 -0.41 - 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5 8 36 - 6 27 21 - 5 5 45 - 6 30 10 -0.41 - 24 0 0 - 5 41 6 3 25 21.4 56 225 -58 - 5 1 35 - 6 20 25 - 4 58 44 - 6 23 14 -0.41 - 23 0 0 - 5 33 37 3 25 13.7 56 226 -58 - 4 54 4 - 6 12 59 - 4 51 13 - 6 15 48 -0.41 - 22 0 0 - 5 25 38 3 25 6.0 55 226 -57 - 4 46 2 - 6 5 2 - 4 43 10 - 6 7 52 -0.41 - 21 0 0 - 5 17 7 3 24 58.3 54 227 -56 - 4 37 28 - 5 56 35 - 4 34 37 - 5 59 25 -0.41 - 20 0 0 - 5 8 7 3 24 50.8 53 228 -55 - 4 28 24 - 5 47 37 - 4 25 33 - 5 50 28 -0.41 - 19 0 0 - 4 58 35 3 24 43.3 52 228 -54 - 4 18 50 - 5 38 9 - 4 15 58 - 5 41 0 -0.41 - 18 0 0 - 4 48 33 3 24 35.9 52 229 -53 - 4 8 44 - 5 28 11 - 4 5 52 - 5 31 1 -0.41 - 17 0 0 - 4 38 0 3 24 28.5 51 229 -52 - 3 58 7 - 5 17 42 - 3 55 15 - 5 20 32 -0.41 - 16 0 0 - 4 26 57 3 24 21.2 50 230 -51 - 3 47 0 - 5 6 42 - 3 44 7 - 5 9 33 -0.42 - 15 0 0 - 4 15 22 3 24 14.0 49 230 -51 - 3 35 22 - 4 55 11 - 3 32 28 - 4 58 3 -0.42 - 14 0 0 - 4 3 17 3 24 6.9 48 231 -50 - 3 23 12 - 4 43 11 - 3 20 19 - 4 46 2 -0.42 - 13 0 0 - 3 50 42 3 23 59.8 47 231 -49 - 3 10 32 - 4 30 39 - 3 7 38 - 4 33 31 -0.42 - 12 0 0 - 3 37 35 3 23 52.9 46 232 -48 - 2 57 21 - 4 17 37 - 2 54 27 - 4 20 30 -0.42 - 11 0 0 - 3 23 58 3 23 46.0 46 232 -47 - 2 43 39 - 4 4 5 - 2 40 45 - 4 6 58 -0.42 - 10 0 0 - 3 9 50 3 23 39.2 45 232 -46 - 2 29 27 - 3 50 2 - 2 26 32 - 3 52 55 -0.42 - 9 0 0 - 2 55 12 3 23 32.5 44 233 -45 - 2 14 44 - 3 35 29 - 2 11 48 - 3 38 22 -0.42 - 8 0 0 - 2 40 3 3 23 25.9 43 233 -44 - 1 59 29 - 3 20 25 - 1 56 34 - 3 23 18 -0.42 - 7 0 0 - 2 24 24 3 23 19.4 42 233 -43 - 1 43 45 - 3 4 50 - 1 40 49 - 3 7 45 -0.42 - 6 0 0 - 2 8 14 3 23 13.0 41 234 -42 - 1 27 29 - 2 48 46 - 1 24 33 - 2 51 40 -0.42 - 5 0 0 - 1 51 33 3 23 6.7 40 234 -41 - 1 10 43 - 2 32 11 - 1 7 46 - 2 35 6 -0.42 - 4 0 0 - 1 34 23 3 23 0.5 39 234 -40 - 0 53 26 - 2 15 6 - 0 50 29 - 2 18 1 -0.42 - 3 0 0 - 1 16 41 3 22 54.4 38 234 -39 - 0 35 39 - 1 57 31 - 0 32 42 - 2 0 26 -0.42 - 2 0 0 - 0 58 30 3 22 48.4 37 235 -38 - 0 17 22 - 1 39 25 - 0 14 24 - 1 42 21 -0.42 - 1 0 0 - 0 39 49 3 22 42.5 36 235 -37 0 1 25 - 1 20 50 0 4 24 - 1 23 47 -0.42 0 0 0 - 0 20 37 3 22 36.8 35 235 -36 0 20 43 - 1 1 45 0 23 42 - 1 4 42 -0.42 1 0 0 - 0 0 56 3 22 31.2 34 235 -35 0 40 31 - 0 42 10 0 43 30 - 0 45 7 -0.42 2 0 0 0 19 15 3 22 25.7 33 235 -34 1 0 48 - 0 22 5 1 3 48 - 0 25 3 -0.42 3 0 0 0 39 55 3 22 20.3 32 236 -33 1 21 35 - 0 1 31 1 24 36 - 0 4 30 -0.42 4 0 0 1 1 5 3 22 15.1 31 236 -32 1 42 52 0 19 32 1 45 53 0 16 33 -0.42 5 0 0 1 22 44 3 22 10.0 30 236 -31 2 4 38 0 41 4 2 7 39 0 38 5 -0.42 6 0 0 1 44 53 3 22 5.0 29 236 -30 2 26 53 1 3 6 2 29 55 1 0 6 -0.42 7 0 0 2 7 30 3 22 0.2 28 236 -29 2 49 37 1 25 36 2 52 40 1 22 36 -0.42 8 0 0 2 30 35 3 21 55.5 27 236 -28 3 12 50 1 48 34 3 15 53 1 45 34 -0.42 9 0 0 2 54 9 3 21 51.0 26 237 -27 3 36 31 2 12 1 3 39 34 2 9 0 -0.43 10 0 0 3 18 11 3 21 46.6 25 237 -26 4 0 40 2 35 56 4 3 44 2 32 54 -0.43 11 0 0 3 42 40 3 21 42.4 24 237 -25 4 25 17 3 0 18 4 28 21 2 57 16 -0.43 12 0 0 4 7 37 3 21 38.3 23 237 -24 4 50 21 3 25 8 4 53 26 3 22 5 -0.43 13 0 0 4 33 1 3 21 34.4 22 237 -23 5 15 53 3 50 25 5 18 58 3 47 21 -0.43 14 0 0 4 58 52 3 21 30.7 21 237 -21 5 41 51 4 16 8 5 44 57 4 13 4 -0.43 15 0 0 5 25 9 3 21 27.1 20 237 -20 6 8 16 4 42 18 6 11 22 4 39 13 -0.43 16 0 0 5 51 52 3 21 23.7 19 238 -19 6 35 6 5 8 53 6 38 13 5 5 48 -0.43 17 0 0 6 19 1 3 21 20.5 18 238 -18 7 2 22 5 35 54 7 5 30 5 32 49 -0.43 18 0 0 6 46 34 3 21 17.4 17 238 -17 7 30 3 6 3 20 7 33 11 6 0 14 -0.43 19 0 0 7 14 32 3 21 14.5 15 238 -16 7 58 8 6 31 11 8 1 17 6 28 4 -0.43 20 0 0 7 42 54 3 21 11.9 14 238 -15 8 26 38 6 59 25 8 29 47 6 56 18 -0.43 21 0 0 8 11 39 3 21 9.4 13 238 -14 8 55 30 7 28 3 8 58 40 7 24 55 -0.43 22 0 0 8 40 47 3 21 7.1 12 239 -13 9 24 46 7 57 4 9 27 56 7 53 55 -0.43 23 0 0 9 10 17 3 21 4.9 11 239 -12 9 54 23 8 26 26 9 57 34 8 23 18 -0.43 24 0 0 9 40 9 3 21 3.0 10 239 -11 10 24 22 8 56 11 10 27 34 8 53 2 -0.43 25 0 0 10 10 21 3 21 1.3 9 239 -9 10 54 42 9 26 17 10 57 54 9 23 7 -0.43 26 0 0 10 40 54 3 20 59.7 8 239 -8 11 25 22 9 56 42 11 28 35 9 53 32 -0.44 27 0 0 11 11 47 3 20 58.4 7 239 -7 11 56 22 10 27 28 11 59 35 10 24 17 -0.44 28 0 0 11 42 58 3 20 57.3 6 240 -6 12 27 40 10 58 32 12 30 54 10 55 21 -0.44 29 0 0 12 14 27 3 20 56.3 5 240 -5 12 59 16 11 29 54 13 2 30 11 26 43 -0.44 30 0 0 12 46 13 3 20 55.6 3 240 -4 13 31 9 12 1 34 13 34 23 11 58 22 -0.45 31 0 0 13 18 15 3 20 55.1 2 240 -3 14 3 18 12 33 30 14 6 33 12 30 17 -0.46 32 0 0 13 50 33 3 20 54.8 1 241 -2 14 35 42 13 5 41 14 38 57 13 2 28 -0.48 33 0 0 14 23 5 3 20 54.7 0 241 -1 .. .. .. 13 38 8 .. .. .. 13 34 54 -1.22 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: UCAC4 310-133854 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 50 32.6538 DE: -28 10 27.817 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 50 32.6538 DE: -28 10 27.817 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (111) Ate asteroid class: approx. diameter [km]: 133 approx. diameter ["]: 0.101 distance from Earth [AU]: 1.81350 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#126 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): 0.012", 0.003", 86.8° remarks: * orbital elements for (111)Ate : Mean anomaly = 147.9000195668 deg Arg. of pericenter = 168.2897300959 deg Long. of node = 305.6642861868 deg Inclination = 4.9314917795 deg Eccentricity = 0.1031259939 Semimajor axis = 2.5937436256 AU Perihelion dist = 2.3262612364 AU Mag: H = 8.23, G = 0.15 Epoch of elements : MJD 60479.14497958 TDT (2024 Jun 18.1450) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1262023Apr24,10.66,2024,6,18,3.479505,0.039289,0.376716,-7.025926,0.732825,-0.000053,0.000462,0.000001,0.000000 -51.0340,-28.1819,128.11,23.41,False UCAC4 310-133854,17.84240384,-28.1743935,11.75,11.49,11.35,0.0,0,,17.86849806,-28.1819290,1.04,0.86,0,0,1 111,Ate,12.00,133.432,1.8135,0,0,-2.576,3.56,,8.0,0 0,147.8658,2024,6,18,168.2897,305.6643,4.9315,0.10313,2.59374,2.32626,8.23,5.0,0.15 1.036,0.0120,0.0031,87,0.0036,Known errors,0.87,0,-1,-1 20240618_133854,60139.39 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org