IOTA/IOTA-ES occultation update for (4741) Leskov / UCAC4 329-151383 event on 2024 Jun 10, 08:52 UT Visible from Summary ------- On 2024 Jun 10 UT, the 16.748022123588 km diameter asteroid (4741) Leskov will occult a 10.0 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 6.95 mag to 16.91 mag (the magnitude of the asteroid) for at most 1.710 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: 95 * date and approx. time of event: 2024 Jun 10, 08:41 - 2024 Jun 10, 09:02 * geocentric midpoint of event [JD]: 2460471.86958120 * magnitude of target star: 9.96 * magnitude drop [mag]: 6.95 * estimated maximum duration [s]: 1.710 * Moon: 17 % sunlit, 148° distance * Sun: 164° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 4.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.032, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.032", 0.005", 89°) * approx speed of asteroid's shadow [km/s]: 10.2898 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 329-151383 by 4741 Leskov on 2024 Jun 10 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 147 0 0 -13 7 59 9 2 25.4 1 115 -17 -13 2 41 -13 13 18 -12 58 2 -13 17 57 .... 148 0 0 -13 35 13 9 2 25.1 2 115 -18 -13 29 55 -13 40 31 -13 25 16 -13 45 10 0.17 149 0 0 -14 2 16 9 2 24.7 3 114 -19 -13 56 58 -14 7 34 -13 52 19 -14 12 13 0.15 150 0 0 -14 29 7 9 2 24.0 4 114 -20 -14 23 50 -14 34 25 -14 19 11 -14 39 4 0.14 151 0 0 -14 55 47 9 2 23.1 5 114 -21 -14 50 30 -15 1 5 -14 45 52 -15 5 43 0.14 152 0 0 -15 22 14 9 2 22.0 6 114 -22 -15 16 57 -15 27 31 -15 12 20 -15 32 10 0.14 153 0 0 -15 48 29 9 2 20.6 7 113 -23 -15 43 12 -15 53 45 -15 38 34 -15 58 23 0.13 154 0 0 -16 14 29 9 2 19.1 8 113 -24 -16 9 13 -16 19 46 -16 4 36 -16 24 23 0.13 155 0 0 -16 40 16 9 2 17.4 9 113 -25 -16 35 0 -16 45 32 -16 30 23 -16 50 9 0.13 156 0 0 -17 5 48 9 2 15.5 10 112 -26 -17 0 33 -17 11 4 -16 55 56 -17 15 40 0.13 157 0 0 -17 31 5 9 2 13.4 11 112 -27 -17 25 50 -17 36 20 -17 21 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17 - 7 13 14 0.14 - 32 0 0 - 6 35 21 8 42 9.8 11 246 5 - 6 30 2 - 6 40 40 - 6 25 23 - 6 45 19 0.14 - 31 0 0 - 6 7 26 8 42 7.7 10 246 6 - 6 2 8 - 6 12 45 - 5 57 28 - 6 17 24 0.14 - 30 0 0 - 5 39 32 8 42 5.7 9 246 7 - 5 34 14 - 5 44 51 - 5 29 34 - 5 49 30 0.15 - 29 0 0 - 5 11 40 8 42 3.9 8 246 9 - 5 6 21 - 5 16 58 - 5 1 42 - 5 21 37 0.15 - 28 0 0 - 4 43 49 8 42 2.4 7 246 10 - 4 38 31 - 4 49 7 - 4 33 52 - 4 53 47 0.15 - 27 0 0 - 4 16 1 8 42 1.1 6 246 11 - 4 10 43 - 4 21 20 - 4 6 4 - 4 25 59 0.16 - 26 0 0 - 3 48 17 8 42 0.0 5 246 12 - 3 42 59 - 3 53 35 - 3 38 21 - 3 58 14 0.17 - 25 0 0 - 3 20 38 8 41 59.2 3 246 13 - 3 15 20 - 3 25 56 - 3 10 41 - 3 30 34 0.18 - 24 0 0 - 2 53 3 8 41 58.6 2 246 14 - 2 47 45 - 2 58 21 - 2 43 7 - 3 2 59 0.21 - 23 0 0 - 2 25 34 8 41 58.2 1 246 15 - 2 20 17 - 2 30 51 - 2 15 38 - 2 35 30 0.29 - 22 0 0 - 1 58 12 8 41 58.0 0 246 16 - 1 52 54 - 2 3 29 - 1 48 16 - 2 8 7 1.15 Uncertainty in time = +/- 5 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: UCAC4 329-151383 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 26 36.9785 DE: -24 19 39.442 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 26 36.9786 DE: -24 19 39.442 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 10.0 * B mag [mag]: 11.7 * Diameter [mas]: 0.60 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4741) Leskov asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.012 distance from Earth [AU]: 2.00150 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 date of fit: 2023 Apr 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): 0.032", 0.005", 88.5° remarks: * orbital elements for (4741)Leskov : Mean anomaly = 304.4276811260 deg Arg. of pericenter = 279.6034554033 deg Long. of node = 64.5532226909 deg Inclination = 1.5682954425 deg Eccentricity = 0.1706623525 Semimajor axis = 3.2271569929 AU Perihelion dist = 2.6764027885 AU Mag: H = 12.58, G = 0.15 Epoch of elements : MJD 60471.36958208 TDT (2024 Jun 10.3696) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr25,1.71,2024,6,10,8.869949,0.014566,-0.139016,-5.776231,-0.605190,-0.001574,0.000018,0.000001,0.000000 -115.2213,-24.3135,46.84,23.06,False UCAC4 329-151383,18.44360515,-24.3276227,11.68,9.96,9.03,0.6,4,,18.46887767,-24.3134727,6.95,7.43,0,0,0 4741,Leskov,16.91,17.619,2.0015,0,0,-1.856,-2.66,,1.2,0 0,304.3648,2024,6,10,279.6035,64.5532,1.5683,0.17066,3.22716,2.67640,12.58,5.0,0.15 1.438,0.0323,0.0047,89,0.0053,Known errors,0.87,0,-1,-1 20240610_151383,60139.38 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org