IOTA/IOTA-ES occultation update for (4353) Onizaki / UCAC4 338-181619 event on 2024 Mar 13, 17:51 UT Visible from Summary ------- On 2024 Mar 13 UT, the 11.24 km diameter asteroid (4353) Onizaki 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 5.19 mag to 16.95 mag (the magnitude of the asteroid) for at most 0.370 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 Mar 13, 17:48 - 2024 Mar 13, 17:54 * geocentric midpoint of event [JD]: 2460383.24385216 * magnitude of target star: 11.77 * magnitude drop [mag]: 5.19 * estimated maximum duration [s]: 0.370 * Moon: 15 % sunlit, 116° distance * Sun: 70° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.001", 94°) * approx speed of asteroid's shadow [km/s]: 30.2376 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 338-181619 by 4353 Onizaki on 2024 Mar 13 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 105 0 0 -26 51 36 17 48 4.6 1 115 -59 -26 55 29 -26 47 44 -26 57 22 -26 45 51 .... 106 0 0 -27 17 5 17 48 4.7 2 114 -59 -27 20 57 -27 13 13 -27 22 51 -27 11 20 0.51 107 0 0 -27 42 35 17 48 4.9 3 114 -58 -27 46 27 -27 38 42 -27 48 21 -27 36 49 0.53 108 0 0 -28 8 5 17 48 5.1 4 113 -57 -28 11 57 -28 4 12 -28 13 51 -28 2 19 0.54 109 0 0 -28 33 34 17 48 5.4 5 113 -56 -28 37 27 -28 29 41 -28 39 20 -28 27 48 0.54 110 0 0 -28 59 2 17 48 5.8 6 112 -56 -29 2 55 -28 55 10 -29 4 49 -28 53 16 0.55 111 0 0 -29 24 29 17 48 6.3 7 112 -55 -29 28 22 -29 20 36 -29 30 15 -29 18 42 0.55 112 0 0 -29 49 52 17 48 6.8 8 111 -54 -29 53 46 -29 45 59 -29 55 39 -29 44 6 0.55 113 0 0 -30 15 13 17 48 7.4 9 111 -53 -30 19 6 -30 11 20 -30 21 0 -30 9 26 0.55 114 0 0 -30 40 30 17 48 8.0 10 110 -52 -30 44 23 -30 36 36 -30 46 17 -30 34 43 0.55 115 0 0 -31 5 42 17 48 8.7 11 110 -52 -31 9 35 -31 1 49 -31 11 29 -30 59 55 0.55 116 0 0 -31 30 49 17 48 9.5 12 109 -51 -31 34 42 -31 26 55 -31 36 36 -31 25 2 0.55 117 0 0 -31 55 50 17 48 10.4 12 109 -50 -31 59 43 -31 51 56 -32 1 37 -31 50 3 0.56 118 0 0 -32 20 44 17 48 11.3 13 108 -49 -32 24 38 -32 16 51 -32 26 31 -32 14 57 0.56 119 0 0 -32 45 32 17 48 12.2 14 108 -48 -32 49 25 -32 41 38 -32 51 19 -32 39 45 0.56 120 0 0 -33 10 11 17 48 13.2 15 107 -47 -33 14 5 -33 6 18 -33 15 58 -33 4 25 0.56 121 0 0 -33 34 43 17 48 14.3 16 106 -47 -33 38 36 -33 30 50 -33 40 30 -33 28 56 0.56 122 0 0 -33 59 5 17 48 15.4 17 106 -46 -34 2 58 -33 55 12 -34 4 52 -33 53 19 0.56 123 0 0 -34 23 18 17 48 16.6 18 105 -45 -34 27 11 -34 19 26 -34 29 5 -34 17 32 0.56 124 0 0 -34 47 21 17 48 17.8 19 105 -44 -34 51 14 -34 43 29 -34 53 8 -34 41 35 0.56 125 0 0 -35 11 14 17 48 19.1 20 104 -43 -35 15 7 -35 7 21 -35 17 0 -35 5 28 0.56 126 0 0 -35 34 55 17 48 20.5 21 103 -42 -35 38 48 -35 31 3 -35 40 41 -35 29 10 0.56 127 0 0 -35 58 25 17 48 21.8 22 103 -41 -36 2 17 -35 54 33 -36 4 10 -35 52 39 0.56 128 0 0 -36 21 42 17 48 23.3 22 102 -41 -36 25 35 -36 17 50 -36 27 28 -36 15 57 0.56 129 0 0 -36 44 47 17 48 24.8 23 101 -40 -36 48 39 -36 40 55 -36 50 32 -36 39 3 0.56 130 0 0 -37 7 39 17 48 26.3 24 101 -39 -37 11 31 -37 3 48 -37 13 24 -37 1 55 0.56 131 0 0 -37 30 18 17 48 27.8 25 100 -38 -37 34 9 -37 26 26 -37 36 2 -37 24 34 0.56 132 0 0 -37 52 42 17 48 29.4 26 99 -37 -37 56 34 -37 48 51 -37 58 26 -37 46 59 0.56 133 0 0 -38 14 52 17 48 31.1 27 98 -36 -38 18 43 -38 11 2 -38 20 36 -38 9 9 0.56 134 0 0 -38 36 48 17 48 32.8 28 98 -36 -38 40 39 -38 32 57 -38 42 31 -38 31 5 0.56 135 0 0 -38 58 28 17 48 34.5 28 97 -35 -39 2 19 -38 54 38 -39 4 11 -38 52 46 0.56 136 0 0 -39 19 53 17 48 36.2 29 96 -34 -39 23 44 -39 16 3 -39 25 36 -39 14 11 0.56 137 0 0 -39 41 3 17 48 38.0 30 95 -33 -39 44 52 -39 37 13 -39 46 45 -39 35 21 0.56 138 0 0 -40 1 56 17 48 39.8 31 95 -32 -40 5 45 -39 58 6 -40 7 37 -39 56 15 0.56 139 0 0 -40 22 33 17 48 41.7 32 94 -31 -40 26 22 -40 18 44 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33 2 0.56 -159 0 0 -51 39 50 17 51 0.0 61 8 12 -51 43 19 -51 36 22 -51 45 1 -51 34 40 0.56 -158 0 0 -51 41 11 17 51 2.3 61 6 13 -51 44 40 -51 37 43 -51 46 21 -51 36 1 0.56 -157 0 0 -51 42 15 17 51 4.6 61 4 13 -51 45 43 -51 38 46 -51 47 25 -51 37 4 0.56 -156 0 0 -51 43 1 17 51 6.9 61 2 14 -51 46 29 -51 39 32 -51 48 11 -51 37 51 0.56 -155 0 0 -51 43 29 17 51 9.2 61 0 15 -51 46 58 -51 40 1 -51 48 39 -51 38 19 0.56 -154 0 0 -51 43 40 17 51 11.5 61 358 15 -51 47 9 -51 40 12 -51 48 51 -51 38 30 0.56 -153 0 0 -51 43 34 17 51 13.9 61 356 16 -51 47 3 -51 40 6 -51 48 44 -51 38 24 0.56 -152 0 0 -51 43 11 17 51 16.2 61 354 16 -51 46 39 -51 39 42 -51 48 21 -51 38 1 0.56 -151 0 0 -51 42 30 17 51 18.5 61 353 17 -51 45 58 -51 39 1 -51 47 40 -51 37 20 0.56 -150 0 0 -51 41 31 17 51 20.8 60 351 18 -51 45 0 -51 38 3 -51 46 42 -51 36 21 0.56 -149 0 0 -51 40 15 17 51 23.1 60 349 18 -51 43 44 -51 36 47 -51 45 26 -51 35 5 0.56 -148 0 0 -51 38 42 17 51 25.4 60 347 19 -51 42 11 -51 35 13 -51 43 53 -51 33 32 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0 0 -36 5 30 17 53 57.9 20 256 55 -36 9 22 -36 1 38 -36 11 15 -35 59 45 0.58 - 74 0 0 -35 42 4 17 53 59.2 19 256 55 -35 45 57 -35 38 12 -35 47 50 -35 36 19 0.58 - 73 0 0 -35 18 27 17 54 0.4 18 255 55 -35 22 20 -35 14 35 -35 24 13 -35 12 41 0.58 - 72 0 0 -34 54 38 17 54 1.6 18 255 55 -34 58 31 -34 50 46 -35 0 25 -34 48 53 0.59 - 71 0 0 -34 30 39 17 54 2.7 17 254 55 -34 34 32 -34 26 46 -34 36 26 -34 24 53 0.59 - 70 0 0 -34 6 30 17 54 3.8 16 253 55 -34 10 23 -34 2 37 -34 12 16 -34 0 43 0.59 - 69 0 0 -33 42 11 17 54 4.9 15 253 55 -33 46 4 -33 38 18 -33 47 58 -33 36 24 0.59 - 68 0 0 -33 17 43 17 54 5.9 14 252 55 -33 21 36 -33 13 50 -33 23 30 -33 11 56 0.59 - 67 0 0 -32 53 6 17 54 6.8 13 252 55 -32 57 0 -32 49 13 -32 58 53 -32 47 20 0.60 - 66 0 0 -32 28 22 17 54 7.6 12 251 55 -32 32 15 -32 24 29 -32 34 9 -32 22 35 0.60 - 65 0 0 -32 3 30 17 54 8.4 11 250 54 -32 7 23 -31 59 37 -32 9 17 -31 57 43 0.60 - 64 0 0 -31 38 32 17 54 9.2 10 250 54 -31 42 25 -31 34 38 -31 44 19 -31 32 45 0.61 - 63 0 0 -31 13 27 17 54 9.9 9 249 54 -31 17 21 -31 9 34 -31 19 14 -31 7 41 0.61 - 62 0 0 -30 48 17 17 54 10.5 8 249 54 -30 52 11 -30 44 24 -30 54 4 -30 42 31 0.62 - 61 0 0 -30 23 3 17 54 11.0 7 248 53 -30 26 56 -30 19 10 -30 28 50 -30 17 16 0.62 - 60 0 0 -29 57 44 17 54 11.5 6 248 53 -30 1 37 -29 53 51 -30 3 31 -29 51 58 0.63 - 59 0 0 -29 32 22 17 54 11.9 5 247 53 -29 36 15 -29 28 29 -29 38 9 -29 26 36 0.65 - 58 0 0 -29 6 57 17 54 12.3 4 247 52 -29 10 50 -29 3 4 -29 12 44 -29 1 11 0.66 - 57 0 0 -28 41 30 17 54 12.6 3 246 52 -28 45 23 -28 37 38 -28 47 17 -28 35 44 0.69 - 56 0 0 -28 16 2 17 54 12.8 2 246 51 -28 19 55 -28 12 9 -28 21 48 -28 10 16 0.74 - 55 0 0 -27 50 33 17 54 13.0 1 245 51 -27 54 26 -27 46 41 -27 56 19 -27 44 47 0.86 - 54 0 0 -27 25 4 17 54 13.0 1 245 50 -27 28 56 -27 21 12 -27 30 50 -27 19 19 1.45 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 338-181619 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 57 35.4401 DE: -22 27 24.280 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 57 35.4403 DE: -22 27 24.280 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4353) Onizaki asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.22090 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 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): 0.016", 0.001", 93.7° remarks: * orbital elements for (4353)Onizaki : Mean anomaly = 345.0733304694 deg Arg. of pericenter = 196.4708999724 deg Long. of node = 79.0136286710 deg Inclination = 8.9996844009 deg Eccentricity = 0.1091867930 Semimajor axis = 2.3459113450 AU Perihelion dist = 2.0897688086 AU Mag: H = 12.41, G = 0.15 Epoch of elements : MJD 60382.74385200 TDT (2024 Mar 13.7439) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr24,0.37,2024,3,13,17.852452,-0.003229,-0.485499,17.066545,-0.117859,-0.005129,-0.000513,-0.000001,0.000000 -154.8798,-22.4257,-85.47,-2.52,False UCAC4 338-181619,18.95984444,-22.4567445,12.13,11.77,11.58,0.0,0,,18.98388162,-22.4257036,5.19,4.94,0,0,0 4353,Onizaki,16.95,11.240,2.2209,0,0,4.874,-0.46,,1.0,0 0,344.8693,2024,3,13,196.4709,79.0136,8.9997,0.10919,2.34591,2.08977,12.41,5.0,0.15 1.244,0.0163,0.0014,94,0.0017,Known errors,0.90,0,-1,-1 20240313_181619,60139.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:33 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org