IOTA/IOTA-ES occultation update for (145) Adeona / UCAC4 287-202217 event on 2024 Oct 05, 15:30 UT Visible from Summary ------- On 2024 Oct 05 UT, the 137.899032052475 km diameter asteroid (145) Adeona will occult a 11.2 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 2.75 mag to 13.85 mag (the magnitude of the asteroid) for at most 10.920 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 05, 15:22 - 2024 Oct 05, 15:39 * geocentric midpoint of event [JD]: 2460589.14649471 * magnitude of target star: 11.19 * magnitude drop [mag]: 2.75 * estimated maximum duration [s]: 10.920 * Moon: 7 % sunlit, 64° distance * Sun: 95° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 143 * 1 sigma uncertainty interval [path widths]: +/- 0.08 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.004", 100°) * approx speed of asteroid's shadow [km/s]: 12.6494 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 287-202217 by 145 Adeona on 2024 Oct 5 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 - 64 0 0 -28 13 23 15 22 50.7 0 127 65 -29 2 40 .. .. .. -29 10 45 .. .. .. .... - 63 0 0 -28 54 3 15 22 50.8 2 127 65 -29 43 14 -28 5 8 -29 51 18 -27 57 9 0.31 - 62 0 0 -29 34 13 15 22 51.2 3 126 64 -30 23 17 -28 45 25 -30 31 20 -28 37 27 0.30 - 61 0 0 -30 13 53 15 22 51.8 4 126 64 -31 2 48 -29 25 11 -31 10 50 -29 17 15 0.30 - 60 0 0 -30 53 0 15 22 52.5 5 125 64 -31 41 47 -30 4 26 -31 49 48 -29 56 31 0.30 - 59 0 0 -31 31 34 15 22 53.5 6 125 63 -32 20 13 -30 43 9 -32 28 12 -30 35 15 0.29 - 58 0 0 -32 9 34 15 22 54.6 7 124 63 -32 58 4 -31 21 18 -33 6 2 -31 13 25 0.29 - 57 0 0 -32 46 59 15 22 55.8 8 124 62 -33 35 20 -31 58 52 -33 43 17 -31 51 1 0.29 - 56 0 0 -33 23 50 15 22 57.2 9 123 62 -34 12 1 -32 35 52 -34 19 56 -32 28 2 0.29 - 55 0 0 -34 0 4 15 22 58.8 10 123 61 -34 48 5 -33 12 16 -34 55 58 -33 4 28 0.29 - 54 0 0 -34 35 42 15 23 0.5 11 122 61 -35 23 32 -33 48 4 -35 31 24 -33 40 17 0.29 - 53 0 0 -35 10 42 15 23 2.4 12 122 60 -35 58 22 -34 23 15 -36 6 12 -34 15 30 0.29 - 52 0 0 -35 45 5 15 23 4.4 13 121 59 -36 32 35 -34 57 49 -36 40 22 -34 50 6 0.29 - 51 0 0 -36 18 51 15 23 6.6 14 120 59 -37 6 9 -35 31 45 -37 13 55 -35 24 4 0.29 - 50 0 0 -36 51 58 15 23 8.8 15 120 58 -37 39 4 -36 5 4 -37 46 48 -35 57 24 0.29 - 49 0 0 -37 24 27 15 23 11.2 16 119 57 -38 11 21 -36 37 44 -38 19 3 -36 30 6 0.29 - 48 0 0 -37 56 17 15 23 13.7 17 118 57 -38 43 0 -37 9 46 -38 50 40 -37 2 10 0.29 - 47 0 0 -38 27 28 15 23 16.3 18 118 56 -39 13 59 -37 41 9 -39 21 37 -37 33 35 0.29 - 46 0 0 -38 58 1 15 23 19.0 19 117 55 -39 44 19 -38 11 54 -39 51 56 -38 4 22 0.29 - 45 0 0 -39 27 54 15 23 21.9 20 117 55 -40 14 1 -38 41 59 -40 21 35 -38 34 29 0.29 - 44 0 0 -39 57 9 15 23 24.8 21 116 54 -40 43 3 -39 11 26 -40 50 35 -39 3 58 0.29 - 43 0 0 -40 25 45 15 23 27.8 22 115 53 -41 11 27 -39 40 14 -41 18 57 -39 32 49 0.29 - 42 0 0 -40 53 42 15 23 30.9 22 114 53 -41 39 12 -40 8 24 -41 46 40 -40 1 0 0.29 - 41 0 0 -41 21 1 15 23 34.0 23 114 52 -42 6 18 -40 35 55 -42 13 44 -40 28 33 0.28 - 40 0 0 -41 47 41 15 23 37.3 24 113 51 -42 32 46 -41 2 47 -42 40 9 -40 55 28 0.28 - 39 0 0 -42 13 43 15 23 40.6 25 112 51 -42 58 35 -41 29 2 -43 5 57 -41 21 44 0.28 - 38 0 0 -42 39 7 15 23 44.0 26 112 50 -43 23 47 -41 54 38 -43 31 6 -41 47 22 0.28 - 37 0 0 -43 3 53 15 23 47.5 27 111 49 -43 48 20 -42 19 36 -43 55 38 -42 12 22 0.28 - 36 0 0 -43 28 2 15 23 51.0 28 110 49 -44 12 17 -42 43 57 -44 19 32 -42 36 45 0.28 - 35 0 0 -43 51 33 15 23 54.6 28 109 48 -44 35 36 -43 7 41 -44 42 49 -43 0 31 0.28 - 34 0 0 -44 14 28 15 23 58.2 29 109 47 -44 58 18 -43 30 47 -45 5 30 -43 23 39 0.28 - 33 0 0 -44 36 45 15 24 1.9 30 108 46 -45 20 24 -43 53 17 -45 27 34 -43 46 11 0.28 - 32 0 0 -44 58 27 15 24 5.7 31 107 46 -45 41 54 -44 15 10 -45 49 1 -44 8 6 0.28 - 31 0 0 -45 19 33 15 24 9.5 32 106 45 -46 2 48 -44 36 27 -46 9 53 -44 29 25 0.28 - 30 0 0 -45 40 3 15 24 13.3 32 105 44 -46 23 6 -44 57 9 -46 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82 0 0 -32 7 6 15 35 0.8 57 258 -36 -32 56 0 -31 18 26 -33 4 2 -31 10 29 0.28 83 0 0 -31 27 55 15 35 9.1 56 257 -37 -32 17 0 -30 39 4 -32 25 3 -30 31 6 0.28 84 0 0 -30 48 6 15 35 17.4 55 256 -38 -31 37 21 -29 59 6 -31 45 26 -29 51 6 0.28 85 0 0 -30 7 41 15 35 25.7 54 254 -39 -30 57 5 -29 18 31 -31 5 12 -29 10 30 0.29 86 0 0 -29 26 40 15 35 33.9 53 253 -40 -30 16 13 -28 37 21 -30 24 21 -28 29 18 0.29 87 0 0 -28 45 5 15 35 42.1 51 252 -42 -29 34 46 -27 55 38 -29 42 56 -27 47 33 0.29 88 0 0 -28 2 56 15 35 50.2 50 251 -43 -28 52 45 -27 13 21 -29 0 56 -27 5 16 0.29 89 0 0 -27 20 15 15 35 58.3 49 251 -44 -28 10 12 -26 30 33 -28 18 24 -26 22 26 0.29 90 0 0 -26 37 3 15 36 6.3 48 250 -45 -27 27 7 -25 47 15 -27 35 20 -25 39 7 0.29 91 0 0 -25 53 22 15 36 14.2 47 249 -46 -26 43 32 -25 3 28 -26 51 46 -24 55 19 0.29 92 0 0 -25 9 13 15 36 22.1 46 248 -47 -25 59 28 -24 19 13 -26 7 43 -24 11 3 0.29 93 0 0 -24 24 38 15 36 29.8 45 247 -49 -25 14 58 -23 34 33 -25 23 14 -23 26 23 0.29 94 0 0 -23 39 38 15 36 37.5 44 247 -50 -24 30 2 -22 49 29 -24 38 19 -22 41 18 0.29 95 0 0 -22 54 15 15 36 45.0 42 246 -51 -23 44 43 -22 4 3 -23 53 0 -21 55 51 0.29 96 0 0 -22 8 31 15 36 52.5 41 245 -52 -22 59 2 -21 18 16 -23 7 19 -21 10 4 0.29 97 0 0 -21 22 28 15 36 59.7 40 245 -53 -22 13 0 -20 32 11 -22 21 18 -20 23 58 0.29 98 0 0 -20 36 7 15 37 6.9 39 244 -55 -21 26 41 -19 45 49 -21 34 59 -19 37 36 0.29 99 0 0 -19 49 31 15 37 13.9 38 243 -56 -20 40 6 -18 59 12 -20 48 24 -18 51 0 0.30 100 0 0 -19 2 42 15 37 20.7 36 243 -57 -19 53 17 -18 12 23 -20 1 35 -18 4 11 0.30 101 0 0 -18 15 42 15 37 27.4 35 242 -58 -19 6 16 -17 25 24 -19 14 34 -17 17 11 0.30 102 0 0 -17 28 32 15 37 33.9 34 242 -60 -18 19 5 -16 38 16 -18 27 23 -16 30 3 0.30 103 0 0 -16 41 16 15 37 40.2 33 241 -61 -17 31 46 -15 51 1 -17 40 4 -15 42 49 0.30 104 0 0 -15 53 54 15 37 46.3 32 241 -62 -16 44 22 -15 3 43 -16 52 39 -14 55 31 0.30 105 0 0 -15 6 30 15 37 52.2 30 241 -63 -15 56 54 -14 16 22 -16 5 10 -14 8 11 0.30 106 0 0 -14 19 5 15 37 57.9 29 240 -65 -15 9 25 -13 29 1 -15 17 41 -13 20 51 0.30 107 0 0 -13 31 42 15 38 3.4 28 240 -66 -14 21 57 -12 41 43 -14 30 12 -12 33 34 0.30 108 0 0 -12 44 22 15 38 8.7 27 240 -67 -13 34 31 -11 54 29 -13 42 46 -11 46 20 0.30 109 0 0 -11 57 8 15 38 13.8 25 239 -68 -12 47 11 -11 7 21 -12 55 25 -10 59 13 0.30 110 0 0 -11 10 2 15 38 18.6 24 239 -70 -11 59 59 -10 20 21 -12 8 11 -10 12 15 0.31 111 0 0 -10 23 6 15 38 23.2 23 239 -71 -11 12 55 - 9 33 32 -11 21 6 - 9 25 27 0.31 112 0 0 - 9 36 21 15 38 27.6 21 239 -72 -10 26 3 - 8 46 55 -10 34 12 - 8 38 51 0.31 113 0 0 - 8 49 51 15 38 31.7 20 238 -73 - 9 39 24 - 8 0 33 - 9 47 32 - 7 52 30 0.31 114 0 0 - 8 3 35 15 38 35.5 19 238 -74 - 8 53 0 - 7 14 26 - 9 1 7 - 7 6 25 0.31 115 0 0 - 7 17 38 15 38 39.2 18 238 -76 - 8 6 53 - 6 28 38 - 8 14 58 - 6 20 38 0.31 116 0 0 - 6 31 59 15 38 42.5 16 238 -77 - 7 21 5 - 5 43 9 - 7 29 9 - 5 35 11 0.31 117 0 0 - 5 46 42 15 38 45.7 15 238 -78 - 6 35 37 - 4 58 1 - 6 43 39 - 4 50 5 0.32 118 0 0 - 5 1 47 15 38 48.6 14 238 -79 - 5 50 32 - 4 13 17 - 5 58 32 - 4 5 22 0.32 119 0 0 - 4 17 16 15 38 51.2 13 237 -80 - 5 5 51 - 3 28 57 - 5 13 49 - 3 21 3 0.32 120 0 0 - 3 33 11 15 38 53.6 11 237 -81 - 4 21 34 - 2 45 2 - 4 29 31 - 2 37 11 0.32 121 0 0 - 2 49 33 15 38 55.7 10 237 -82 - 3 37 45 - 2 1 36 - 3 45 40 - 1 53 46 0.33 122 0 0 - 2 6 23 15 38 57.6 9 237 -83 - 2 54 24 - 1 18 37 - 3 2 16 - 1 10 49 0.33 123 0 0 - 1 23 43 15 38 59.2 8 237 -83 - 2 11 32 - 0 36 9 - 2 19 23 - 0 28 23 0.34 124 0 0 - 0 41 34 15 39 0.6 7 237 -84 - 1 29 10 0 5 48 - 1 36 59 0 13 32 0.35 125 0 0 0 0 3 15 39 1.8 5 237 -84 - 0 47 21 0 47 14 - 0 55 8 0 54 56 0.36 126 0 0 0 41 7 15 39 2.7 4 237 -84 - 0 6 4 1 28 6 - 0 13 49 1 35 46 0.38 127 0 0 1 21 38 15 39 3.3 3 237 -84 0 34 39 2 8 24 0 26 56 2 16 2 0.41 128 0 0 2 1 34 15 39 3.8 2 237 -84 1 14 47 2 48 7 1 7 6 2 55 43 0.49 129 0 0 2 40 53 15 39 4.0 1 237 -83 1 54 19 3 27 14 1 46 41 3 34 48 0.94 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 287-202217 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 22 02.3922 DE: -32 43 15.780 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 22 02.3922 DE: -32 43 15.781 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (145) Adeona asteroid class: approx. diameter [km]: 138 approx. diameter ["]: 0.068 distance from Earth [AU]: 2.81230 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#118 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): 0.008", 0.004", 100.349° remarks: * orbital elements for (145)Adeona : Mean anomaly = 186.4814126124 deg Arg. of pericenter = 45.2062073699 deg Long. of node = 77.3245291161 deg Inclination = 12.6217247174 deg Eccentricity = 0.1471681058 Semimajor axis = 2.6716072216 AU Perihelion dist = 2.2784318475 AU Mag: H = 8.21, G = 0.15 Epoch of elements : MJD 60588.64649425 TDT (2024 Oct 05.6465) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1182023Apr24,10.92,2024,10,5,15.515873,0.082748,-0.246506,6.767621,2.274627,0.005749,0.000930,0.000000,0.000000 43.3731,-32.6759,-55.68,-5.09,False UCAC4 287-202217,19.36733119,-32.7210501,11.81,11.19,10.86,0.1,0,,19.39402233,-32.6758656,2.75,2.65,0,0,0 145,Adeona,13.85,138.103,2.8123,0,0,1.676,7.12,,8.8,0 0,186.3355,2024,10,5,45.2062,77.3245,12.6217,0.14717,2.67161,2.27843,8.21,5.0,0.15 1.082,0.0083,0.0043,100,0.0055,Known errors,1.02,0,-1,-1 20241005_202217,60140.61 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org