IOTA/IOTA-ES occultation update for (4458) Oizumi / UCAC4 566-012676 event on 2024 Mar 15, 05:15 UT Visible from Summary ------- On 2024 Mar 15 UT, the 11.7687064718281 km diameter asteroid (4458) Oizumi will occult a 9.1 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 8.74 mag to 17.82 mag (the magnitude of the asteroid) for at most 0.490 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: 94 * date and approx. time of event: 2024 Mar 15, 05:11 - 2024 Mar 15, 05:20 * geocentric midpoint of event [JD]: 2460384.71938079 * magnitude of target star: 9.08 * magnitude drop [mag]: 8.74 * estimated maximum duration [s]: 0.490 * Moon: 30 % sunlit, 15° distance * Sun: 81° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 12 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.004", 78°) * approx speed of asteroid's shadow [km/s]: 24.2353 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 566-012676 by 4458 Oizumi on 2024 Mar 15 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 97 0 0 - 7 38 19 5 11 31.4 0 67 81 - 7 41 50 - 7 34 47 - 7 45 3 - 7 31 34 .... 98 0 0 - 7 12 22 5 11 31.5 1 67 82 - 7 15 53 - 7 8 50 - 7 19 7 - 7 5 37 -0.12 99 0 0 - 6 46 12 5 11 31.7 2 66 83 - 6 49 43 - 6 42 40 - 6 52 57 - 6 39 26 -0.08 100 0 0 - 6 19 49 5 11 31.9 4 66 84 - 6 23 21 - 6 16 17 - 6 26 34 - 6 13 3 -0.07 101 0 0 - 5 53 14 5 11 32.3 5 66 85 - 5 56 46 - 5 49 42 - 6 0 0 - 5 46 28 -0.06 102 0 0 - 5 26 27 5 11 32.7 6 66 86 - 5 30 0 - 5 22 55 - 5 33 14 - 5 19 41 -0.05 103 0 0 - 4 59 30 5 11 33.3 7 66 87 - 5 3 3 - 4 55 58 - 5 6 17 - 4 52 43 -0.05 104 0 0 - 4 32 23 5 11 33.9 8 66 87 - 4 35 56 - 4 28 50 - 4 39 10 - 4 25 36 -0.05 105 0 0 - 4 5 6 5 11 34.6 9 66 88 - 4 8 39 - 4 1 33 - 4 11 54 - 3 58 18 -0.04 106 0 0 - 3 37 40 5 11 35.5 10 66 88 - 3 41 14 - 3 34 7 - 3 44 28 - 3 30 52 -0.04 107 0 0 - 3 10 6 5 11 36.4 11 66 87 - 3 13 40 - 3 6 33 - 3 16 55 - 3 3 18 -0.04 108 0 0 - 2 42 25 5 11 37.4 12 66 86 - 2 45 59 - 2 38 51 - 2 49 14 - 2 35 36 -0.04 109 0 0 - 2 14 37 5 11 38.6 13 66 85 - 2 18 10 - 2 11 3 - 2 21 26 - 2 7 48 -0.04 110 0 0 - 1 46 42 5 11 39.8 14 66 84 - 1 50 16 - 1 43 9 - 1 53 32 - 1 39 53 -0.04 111 0 0 - 1 18 43 5 11 41.1 16 66 83 - 1 22 17 - 1 15 9 - 1 25 32 - 1 11 53 -0.04 112 0 0 - 0 50 38 5 11 42.5 17 66 82 - 0 54 12 - 0 47 4 - 0 57 28 - 0 43 49 -0.04 113 0 0 - 0 22 30 5 11 44.0 18 66 81 - 0 26 4 - 0 18 56 - 0 29 20 - 0 15 41 -0.04 114 0 0 0 5 41 5 11 45.6 19 66 80 0 2 7 0 9 15 - 0 1 9 0 12 31 -0.04 115 0 0 0 33 55 5 11 47.3 20 66 79 0 30 21 0 37 29 0 27 5 0 40 45 -0.04 116 0 0 1 2 10 5 11 49.1 21 66 78 0 58 36 1 5 45 0 55 21 1 9 0 -0.04 117 0 0 1 30 27 5 11 51.0 22 66 77 1 26 52 1 34 1 1 23 37 1 37 17 -0.04 118 0 0 1 58 43 5 11 53.0 23 66 76 1 55 9 2 2 17 1 51 53 2 5 33 -0.03 119 0 0 2 26 59 5 11 55.1 24 66 75 2 23 25 2 30 33 2 20 9 2 33 49 -0.03 120 0 0 2 55 13 5 11 57.2 26 66 74 2 51 39 2 58 48 2 48 24 3 2 3 -0.03 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0 0 19 14 56 5 19 51.8 26 287 -55 19 11 32 19 18 19 19 8 26 19 21 25 -0.03 -108 0 0 18 56 23 5 19 53.8 25 287 -56 18 52 59 18 59 47 18 49 53 19 2 54 -0.03 -107 0 0 18 37 29 5 19 55.7 24 288 -57 18 34 5 18 40 53 18 30 58 18 44 0 -0.03 -106 0 0 18 18 13 5 19 57.5 23 288 -58 18 14 48 18 21 38 18 11 41 18 24 45 -0.03 -105 0 0 17 58 35 5 19 59.2 22 288 -59 17 55 10 18 2 0 17 52 3 18 5 8 -0.03 -104 0 0 17 38 36 5 20 0.9 20 289 -60 17 35 11 17 42 2 17 32 3 17 45 9 -0.03 -103 0 0 17 18 16 5 20 2.5 19 289 -61 17 14 51 17 21 42 17 11 43 17 24 50 -0.03 -102 0 0 16 57 36 5 20 4.0 18 289 -62 16 54 9 17 1 2 16 51 1 17 4 10 -0.03 -101 0 0 16 36 34 5 20 5.5 17 290 -63 16 33 8 16 40 1 16 29 59 16 43 9 -0.04 -100 0 0 16 15 13 5 20 6.9 16 290 -64 16 11 46 16 18 40 16 8 37 16 21 49 -0.04 - 99 0 0 15 53 32 5 20 8.2 15 290 -65 15 50 5 15 56 59 15 46 56 16 0 8 -0.04 - 98 0 0 15 31 31 5 20 9.4 14 290 -66 15 28 4 15 34 59 15 24 54 15 38 8 -0.04 - 97 0 0 15 9 12 5 20 10.5 13 291 -67 15 5 44 15 12 40 15 2 34 15 15 49 -0.04 - 96 0 0 14 46 33 5 20 11.6 12 291 -68 14 43 5 14 50 2 14 39 55 14 53 12 -0.04 - 95 0 0 14 23 37 5 20 12.6 11 291 -69 14 20 8 14 27 5 14 16 58 14 30 16 -0.04 - 94 0 0 14 0 22 5 20 13.5 10 291 -70 13 56 53 14 3 51 13 53 43 14 7 2 -0.04 - 93 0 0 13 36 50 5 20 14.3 9 292 -71 13 33 21 13 40 19 13 30 10 13 43 30 -0.04 - 92 0 0 13 13 1 5 20 15.0 8 292 -72 13 9 32 13 16 30 13 6 20 13 19 42 -0.05 - 91 0 0 12 48 55 5 20 15.6 7 292 -73 12 45 26 12 52 25 12 42 14 12 55 37 -0.05 - 90 0 0 12 24 34 5 20 16.2 6 292 -74 12 21 4 12 28 4 12 17 52 12 31 15 -0.05 - 89 0 0 11 59 56 5 20 16.6 5 293 -75 11 56 26 12 3 26 11 53 14 12 6 38 -0.06 - 88 0 0 11 35 4 5 20 17.0 4 293 -76 11 31 33 11 38 34 11 28 21 11 41 46 -0.07 - 87 0 0 11 9 56 5 20 17.3 3 293 -77 11 6 26 11 13 27 11 3 13 11 16 40 -0.08 - 86 0 0 10 44 35 5 20 17.5 2 293 -78 10 41 4 10 48 6 10 37 51 10 51 19 -0.12 - 85 0 0 10 19 1 5 20 17.6 1 293 -79 10 15 29 10 22 32 10 12 16 10 25 45 -0.28 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 566-012676 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 57 09.4302 DE: +23 02 50.946 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 57 09.4301 DE: +23 02 50.946 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.1 * B mag [mag]: 9.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4458) Oizumi asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.00330 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#40 date of fit: 2023 Feb 10 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): 0.017", 0.004", 77.5° remarks: * orbital elements for (4458)Oizumi : Mean anomaly = 14.7428947889 deg Arg. of pericenter = 344.8987204876 deg Long. of node = 98.5994332292 deg Inclination = 4.2999020202 deg Eccentricity = 0.1512364915 Semimajor axis = 2.4416346973 AU Perihelion dist = 2.0723704321 AU Mag: H = 13.47, G = 0.15 Epoch of elements : MJD 60384.21938042 TDT (2024 Mar 15.2194) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#402023Feb10,0.49,2024,3,15,5.265139,-0.003803,0.021666,13.486645,2.286365,0.005343,0.000570,-0.000001,0.000000 -177.6306,23.0858,103.24,-1.94,False UCAC4 566-012676,4.95261953,23.0474850,9.76,9.08,8.71,0.1,0,,4.97680398,23.0858406,8.74,8.66,0,0,0 4458,Oizumi,17.82,11.914,2.0033,0,0,4.291,10.03,,1.2,0 0,14.6862,2024,3,15,344.8987,98.5994,4.2999,0.15124,2.44163,2.07237,13.47,5.0,0.15 1.457,0.0170,0.0037,78,0.0038,Known errors,1.18,0,-1,-1 20240315_012676,60139.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:37 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org