IOTA/IOTA-ES occultation update for (5237) Yoshikawa / UCAC4 562-047400 event on 2024 Nov 15, 01:53 UT Visible from Summary ------- On 2024 Nov 15 UT, the 13.862 km diameter asteroid (5237) Yoshikawa will occult a 10.6 mag star in the constellation Cancer for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.06 mag to 17.64 mag (the magnitude of the asteroid) for at most 0.970 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: 97 * date and approx. time of event: 2024 Nov 15, 01:46 - 2024 Nov 15, 01:59 * geocentric midpoint of event [JD]: 2460629.57855213 * magnitude of target star: 10.58 * magnitude drop [mag]: 7.06 * estimated maximum duration [s]: 0.970 * Moon: 99 % sunlit, 93° distance * Sun: 99° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.40 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.003", 109°) * approx speed of asteroid's shadow [km/s]: 14.3158 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 562-047400 by 5237 Yoshikawa on 2024 Nov 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 - 24 0 0 -20 23 27 1 46 35.8 0 66 -51 -20 28 5 -20 18 48 .. .. .. -20 15 5 .... - 23 0 0 -19 58 44 1 46 35.9 1 66 -51 -20 3 22 -19 54 6 -20 7 5 -19 50 23 0.13 - 22 0 0 -19 34 11 1 46 36.1 2 66 -51 -19 38 48 -19 29 33 -19 42 31 -19 25 51 0.32 - 21 0 0 -19 9 49 1 46 36.5 3 65 -51 -19 14 26 -19 5 12 -19 18 8 -19 1 30 0.39 - 20 0 0 -18 45 38 1 46 37.1 4 65 -51 -18 50 15 -18 41 2 -18 53 57 -18 37 20 0.42 - 19 0 0 -18 21 40 1 46 37.8 5 65 -51 -18 26 17 -18 17 4 -18 29 58 -18 13 23 0.44 - 18 0 0 -17 57 55 1 46 38.7 6 64 -52 -18 2 31 -17 53 19 -18 6 12 -17 49 39 0.46 - 17 0 0 -17 34 23 1 46 39.8 7 64 -52 -17 38 59 -17 29 48 -17 42 40 -17 26 8 0.47 - 16 0 0 -17 11 6 1 46 41.0 8 64 -52 -17 15 41 -17 6 31 -17 19 22 -17 2 51 0.48 - 15 0 0 -16 48 3 1 46 42.4 9 63 -52 -16 52 38 -16 43 29 -16 56 18 -16 39 49 0.48 - 14 0 0 -16 25 16 1 46 44.0 10 63 -51 -16 29 50 -16 20 42 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47 0.54 49 0 0 - 5 47 57 1 52 38.6 61 13 -7 - 5 52 15 - 5 43 40 - 5 55 41 - 5 40 14 0.54 50 0 0 - 5 52 54 1 52 46.6 61 11 -6 - 5 57 12 - 5 48 37 - 6 0 38 - 5 45 10 0.54 51 0 0 - 5 58 20 1 52 54.6 62 9 -5 - 6 2 38 - 5 54 3 - 6 6 5 - 5 50 36 0.54 52 0 0 - 6 4 16 1 53 2.6 62 7 -4 - 6 8 34 - 5 59 58 - 6 12 1 - 5 56 32 0.54 53 0 0 - 6 10 41 1 53 10.6 62 5 -3 - 6 14 59 - 6 6 23 - 6 18 26 - 6 2 56 0.54 54 0 0 - 6 17 35 1 53 18.7 62 3 -2 - 6 21 54 - 6 13 17 - 6 25 21 - 6 9 50 0.54 55 0 0 - 6 24 59 1 53 26.7 62 1 -1 - 6 29 18 - 6 20 41 - 6 32 45 - 6 17 13 0.54 56 0 0 - 6 32 52 1 53 34.7 61 359 0 - 6 37 11 - 6 28 33 - 6 40 38 - 6 25 6 0.54 57 0 0 - 6 41 14 1 53 42.8 61 357 1 - 6 45 33 - 6 36 55 - 6 49 1 - 6 33 27 0.54 58 0 0 - 6 50 5 1 53 50.8 61 355 2 - 6 54 24 - 6 45 45 - 6 57 52 - 6 42 18 0.54 59 0 0 - 6 59 24 1 53 58.8 61 353 3 - 7 3 44 - 6 55 5 - 7 7 13 - 6 51 37 0.54 60 0 0 - 7 9 13 1 54 6.8 60 351 4 - 7 13 33 - 7 4 53 - 7 17 2 - 7 1 25 0.54 61 0 0 - 7 19 30 1 54 14.8 60 350 6 - 7 23 50 - 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-24 9 43 -24 0 19 -24 13 30 -23 56 33 0.53 112 0 0 -24 31 15 1 59 17.0 17 305 58 -24 35 58 -24 26 33 -24 39 45 -24 22 46 0.53 113 0 0 -24 57 33 1 59 19.5 16 304 58 -25 2 16 -24 52 50 -25 6 3 -24 49 3 0.53 114 0 0 -25 23 52 1 59 21.9 15 304 59 -25 28 35 -25 19 9 -25 32 23 -25 15 23 0.53 115 0 0 -25 50 13 1 59 24.2 14 303 60 -25 54 57 -25 45 30 -25 58 44 -25 41 43 0.53 116 0 0 -26 16 35 1 59 26.2 13 303 61 -26 21 18 -26 11 52 -26 25 6 -26 8 4 0.53 117 0 0 -26 42 57 1 59 28.2 12 302 62 -26 47 40 -26 38 13 -26 51 28 -26 34 26 0.53 118 0 0 -27 9 17 1 59 29.9 11 302 63 -27 14 1 -27 4 34 -27 17 49 -27 0 46 0.53 119 0 0 -27 35 37 1 59 31.5 10 302 63 -27 40 21 -27 30 53 -27 44 9 -27 27 6 0.54 120 0 0 -28 1 54 1 59 33.0 9 301 64 -28 6 38 -27 57 10 -28 10 26 -27 53 22 0.54 121 0 0 -28 28 8 1 59 34.3 8 301 65 -28 32 52 -28 23 24 -28 36 40 -28 19 36 0.54 122 0 0 -28 54 19 1 59 35.4 7 300 66 -28 59 3 -28 49 34 -29 2 51 -28 45 47 0.54 123 0 0 -29 20 25 1 59 36.4 6 300 66 -29 25 9 -29 15 41 -29 28 57 -29 11 53 0.54 124 0 0 -29 46 26 1 59 37.2 5 299 67 -29 51 11 -29 41 42 -29 54 59 -29 37 54 0.54 125 0 0 -30 12 22 1 59 37.9 4 299 67 -30 17 6 -30 7 37 -30 20 54 -30 3 50 0.55 126 0 0 -30 38 11 1 59 38.5 3 298 68 -30 42 55 -30 33 27 -30 46 44 -30 29 39 0.55 127 0 0 -31 3 53 1 59 38.9 2 298 69 -31 8 37 -30 59 9 -31 12 26 -30 55 21 0.56 128 0 0 -31 29 28 1 59 39.1 1 297 69 -31 34 12 -31 24 43 -31 38 0 -31 20 56 0.59 129 0 0 -31 54 54 1 59 39.2 0 297 69 -31 59 38 -31 50 10 -32 3 27 -31 46 22 0.74 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 562-047400 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 13 00.7606 DE: +22 12 34.946 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 13 00.7613 DE: +22 12 34.943 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.6 * B mag [mag]: 11.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5237) Yoshikawa asteroid class: approx. diameter [km]: 14 approx. diameter ["]: 0.011 distance from Earth [AU]: 1.78810 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 date of fit: 2022 Nov 25 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", 0.003", 108.559° remarks: * orbital elements for (5237)Yoshikawa : Mean anomaly = 294.0679136170 deg Arg. of pericenter = 145.3430610816 deg Long. of node = 38.1078087912 deg Inclination = 5.1341051110 deg Eccentricity = 0.0942644714 Semimajor axis = 2.2408098413 AU Perihelion dist = 2.0295810862 AU Mag: H = 13.49, G = 0.15 Epoch of elements : MJD 60629.07855250 TDT (2024 Nov 15.0786) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512022Nov25,0.97,2024,11,15,1.885251,-0.054548,-0.471871,8.029944,-0.900109,-0.005247,0.001556,0.000000,0.000000 55.6804,22.1072,147.87,-18.57,False UCAC4 562-047400,9.21687792,22.2097072,11.00,10.58,10.35,0.0,0,,9.24066796,22.1071519,7.06,6.84,0,0,0 5237,Yoshikawa,17.64,13.862,1.7881,0,0,2.842,-4.43,,2.4,0 0,293.7510,2024,11,14,145.3431,38.1078,5.1341,0.09426,2.24081,2.02958,13.49,5.0,0.15 1.401,0.0157,0.0028,109,0.0043,Known errors,0.98,0,-1,-1 20241115_047400,60140.70 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:46 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org