IOTA/IOTA-ES occultation update for (3237) Victorplatt / UCAC4 341-072952 event on 2024 Sep 14, 17:56 UT Visible from Summary ------- On 2024 Sep 14 UT, the 26.793 km diameter asteroid (3237) Victorplatt will occult a 11.5 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.89 mag to 16.39 mag (the magnitude of the asteroid) for at most 0.800 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 Sep 14, 17:53 - 2024 Sep 14, 17:59 * geocentric midpoint of event [JD]: 2460568.24747359 * magnitude of target star: 11.51 * magnitude drop [mag]: 4.89 * estimated maximum duration [s]: 0.800 * Moon: 85 % sunlit, 76° distance * Sun: 58° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 27 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 99°) * approx speed of asteroid's shadow [km/s]: 33.4840 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 341-072952 by 3237 Victorplatt on 2024 Sep 14 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 -121 0 0 9 48 13 17 53 11.4 0 112 58 9 40 21 9 56 5 9 38 47 9 57 39 .... -120 0 0 9 23 30 17 53 11.5 1 113 59 9 15 38 9 31 23 9 14 4 9 32 57 0.08 -119 0 0 8 58 36 17 53 11.6 3 113 60 8 50 43 9 6 29 8 49 9 9 8 3 0.03 -118 0 0 8 33 31 17 53 11.8 4 113 61 8 25 37 8 41 24 8 24 3 8 42 58 0.02 -117 0 0 8 8 14 17 53 12.0 5 113 62 8 0 20 8 16 8 7 58 46 8 17 42 0.01 -116 0 0 7 42 48 17 53 12.4 6 113 63 7 34 53 7 50 42 7 33 19 7 52 16 0.00 -115 0 0 7 17 12 17 53 12.8 7 113 64 7 9 17 7 25 6 7 7 42 7 26 41 0.00 -114 0 0 6 51 26 17 53 13.2 8 113 65 6 43 31 6 59 21 6 41 57 7 0 56 0.00 -113 0 0 6 25 33 17 53 13.8 9 114 66 6 17 37 6 33 28 6 16 3 6 35 3 -0.01 -112 0 0 5 59 31 17 53 14.4 10 114 67 5 51 36 6 7 27 5 50 1 6 9 1 -0.01 -111 0 0 5 33 22 17 53 15.0 11 114 68 5 25 27 5 41 18 5 23 52 5 42 53 -0.01 -110 0 0 5 7 7 17 53 15.8 12 114 69 4 59 11 5 15 3 4 57 36 5 16 38 -0.01 -109 0 0 4 40 46 17 53 16.6 13 114 70 4 32 50 4 48 43 4 31 15 4 50 17 -0.01 -108 0 0 4 14 20 17 53 17.5 14 114 71 4 6 23 4 22 16 4 4 48 4 23 51 -0.01 -107 0 0 3 47 49 17 53 18.4 16 114 73 3 39 52 3 55 45 3 38 17 3 57 20 -0.01 -106 0 0 3 21 14 17 53 19.4 17 114 74 3 13 17 3 29 11 3 11 42 3 30 46 -0.01 -105 0 0 2 54 36 17 53 20.5 18 114 75 2 46 39 3 2 33 2 45 4 3 4 8 -0.01 -104 0 0 2 27 55 17 53 21.6 19 114 76 2 19 58 2 35 52 2 18 23 2 37 27 -0.02 -103 0 0 2 1 12 17 53 22.8 20 114 76 1 53 15 2 9 9 1 51 40 2 10 44 -0.02 -102 0 0 1 34 28 17 53 24.1 21 114 77 1 26 31 1 42 26 1 24 56 1 44 1 -0.02 -101 0 0 1 7 44 17 53 25.5 22 114 78 0 59 47 1 15 41 0 58 12 1 17 16 -0.02 -100 0 0 0 41 0 17 53 26.9 23 114 79 0 33 3 0 48 57 0 31 28 0 50 32 -0.02 - 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9 52 51 -10 9 57 - 9 51 18 -0.01 49 0 0 - 9 37 48 17 59 30.7 7 249 -50 - 9 45 36 - 9 30 1 - 9 47 9 - 9 28 28 -0.01 50 0 0 - 9 14 44 17 59 31.1 6 249 -51 - 9 22 32 - 9 6 56 - 9 24 5 - 9 5 22 0.00 51 0 0 - 8 51 24 17 59 31.4 5 248 -52 - 8 59 13 - 8 43 35 - 9 0 46 - 8 42 2 0.00 52 0 0 - 8 27 50 17 59 31.7 4 248 -53 - 8 35 39 - 8 20 1 - 8 37 13 - 8 18 28 0.01 53 0 0 - 8 4 2 17 59 31.9 3 248 -54 - 8 11 52 - 7 56 13 - 8 13 26 - 7 54 39 0.02 54 0 0 - 7 40 1 17 59 32.1 2 248 -55 - 7 47 52 - 7 32 11 - 7 49 25 - 7 30 37 0.04 55 0 0 - 7 15 47 17 59 32.2 1 248 -56 - 7 23 38 - 7 7 56 - 7 25 12 - 7 6 23 0.12 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 341-072952 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 06 44.4835 DE: -21 57 20.913 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 06 44.4834 DE: -21 57 20.913 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.5 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3237) Victorplatt asteroid class: approx. diameter [km]: 27 approx. diameter ["]: 0.012 distance from Earth [AU]: 3.21120 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.014", 0.001", 98.657° remarks: * orbital elements for (3237)Victorplatt : Mean anomaly = 351.9094016846 deg Arg. of pericenter = 336.7883715211 deg Long. of node = 280.2415983007 deg Inclination = 9.1135812055 deg Eccentricity = 0.0662907783 Semimajor axis = 3.0149636195 AU Perihelion dist = 2.8150993346 AU Mag: H = 10.69, G = 0.15 Epoch of elements : MJD 60567.74747359 TDT (2024 Sep 14.7475) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.80,2024,9,14,17.939366,0.004033,0.027976,18.662784,-2.980552,0.004561,-0.001518,-0.000001,0.000000 -36.2529,-22.0512,-90.26,3.01,False UCAC4 341-072952,15.11235656,-21.9558094,12.08,11.51,11.20,0.0,0,,15.13586160,-22.0511627,4.89,4.75,0,0,0 3237,Victorplatt,16.39,26.793,3.2112,0,0,3.677,-8.16,,1.8,0 0,351.7687,2024,9,14,336.7884,280.2416,9.1136,0.06629,3.01496,2.81510,10.68,5.0,0.15 1.100,0.0143,0.0011,99,0.0011,Known errors,1.14,0,-1,-1 20240914_072952,60140.56 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org