IOTA/IOTA-ES occultation update for (4382) Stravinsky / UCAC4 375-075753 event on 2024 Feb 09, 20:23 UT Visible from Summary ------- On 2024 Feb 09 UT, the 8.767 km diameter asteroid (4382) Stravinsky will occult a 11.9 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.28 mag to 18.17 mag (the magnitude of the asteroid) for at most 0.380 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: 92 * date and approx. time of event: 2024 Feb 09, 20:19 - 2024 Feb 09, 20:28 * geocentric midpoint of event [JD]: 2460350.34982641 * magnitude of target star: 11.89 * magnitude drop [mag]: 6.28 * estimated maximum duration [s]: 0.380 * Moon: 0 % sunlit, 75° distance * Sun: 76° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 9 * 1 sigma uncertainty interval [path widths]: +/- 0.48 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.001", 105°) * approx speed of asteroid's shadow [km/s]: 23.1386 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 375-075753 by 4382 Stravinsky on 2024 Feb 9 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 66 0 0 -12 3 40 20 19 22.9 0 105 -62 -12 6 16 -12 1 4 -12 8 45 -11 58 35 .... 67 0 0 -12 20 8 20 19 22.9 1 105 -62 -12 22 44 -12 17 32 -12 25 14 -12 15 3 0.28 68 0 0 -12 36 43 20 19 23.1 2 105 -61 -12 39 19 -12 34 7 -12 41 49 -12 31 37 0.30 69 0 0 -12 53 24 20 19 23.3 3 105 -61 -12 56 0 -12 50 48 -12 58 30 -12 48 18 0.31 70 0 0 -13 10 11 20 19 23.7 4 105 -60 -13 12 47 -13 7 35 -13 15 17 -13 5 5 0.31 71 0 0 -13 27 4 20 19 24.1 5 104 -59 -13 29 40 -13 24 28 -13 32 10 -13 21 57 0.31 72 0 0 -13 44 1 20 19 24.6 6 104 -59 -13 46 38 -13 41 25 -13 49 8 -13 38 55 0.31 73 0 0 -14 1 4 20 19 25.2 7 104 -58 -14 3 40 -13 58 28 -14 6 11 -13 55 58 0.32 74 0 0 -14 18 11 20 19 25.9 8 104 -57 -14 20 47 -14 15 35 -14 23 18 -14 13 5 0.32 75 0 0 -14 35 22 20 19 26.7 9 103 -57 -14 37 59 -14 32 46 -14 40 29 -14 30 16 0.32 76 0 0 -14 52 37 20 19 27.6 10 103 -56 -14 55 14 -14 50 1 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4 27 -26 54 20 0.33 -125 0 0 -26 45 38 20 27 55.2 17 261 78 -26 48 13 -26 43 3 -26 50 42 -26 40 35 0.34 -124 0 0 -26 31 42 20 27 56.6 16 261 78 -26 34 16 -26 29 7 -26 36 45 -26 26 38 0.34 -123 0 0 -26 17 35 20 27 57.8 15 260 78 -26 20 10 -26 15 0 -26 22 39 -26 12 31 0.34 -122 0 0 -26 3 17 20 27 59.1 14 260 78 -26 5 52 -26 0 42 -26 8 21 -25 58 13 0.34 -121 0 0 -25 48 49 20 28 0.2 13 259 79 -25 51 25 -25 46 14 -25 53 54 -25 43 45 0.34 -120 0 0 -25 34 12 20 28 1.3 13 259 79 -25 36 47 -25 31 37 -25 39 16 -25 29 7 0.34 -119 0 0 -25 19 24 20 28 2.3 12 259 78 -25 22 0 -25 16 49 -25 24 29 -25 14 20 0.34 -118 0 0 -25 4 28 20 28 3.2 11 258 78 -25 7 3 -25 1 52 -25 9 32 -24 59 23 0.35 -117 0 0 -24 49 22 20 28 4.0 10 258 78 -24 51 57 -24 46 46 -24 54 27 -24 44 17 0.35 -116 0 0 -24 34 7 20 28 4.8 9 257 78 -24 36 42 -24 31 31 -24 39 12 -24 29 1 0.35 -115 0 0 -24 18 43 20 28 5.5 8 257 77 -24 21 18 -24 16 7 -24 23 48 -24 13 38 0.36 -114 0 0 -24 3 11 20 28 6.1 7 256 77 -24 5 46 -24 0 35 -24 8 16 -23 58 5 0.36 -113 0 0 -23 47 31 20 28 6.6 6 256 76 -23 50 6 -23 44 55 -23 52 36 -23 42 25 0.37 -112 0 0 -23 31 43 20 28 7.1 5 256 76 -23 34 18 -23 29 7 -23 36 48 -23 26 37 0.38 -111 0 0 -23 15 47 20 28 7.5 4 255 75 -23 18 23 -23 13 11 -23 20 53 -23 10 41 0.39 -110 0 0 -22 59 44 20 28 7.8 3 255 75 -23 2 20 -22 57 8 -23 4 50 -22 54 38 0.41 -109 0 0 -22 43 35 20 28 8.0 2 254 74 -22 46 11 -22 40 59 -22 48 41 -22 38 28 0.45 -108 0 0 -22 27 18 20 28 8.1 1 254 73 -22 29 54 -22 24 42 -22 32 25 -22 22 12 0.56 -107 0 0 -22 10 56 20 28 8.2 0 254 73 -22 13 32 -22 8 20 -22 16 2 -22 5 49 2.31 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: UCAC4 375-075753 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 11 55.5004 DE: -15 05 30.463 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 11 55.5009 DE: -15 05 30.464 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4382) Stravinsky asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.004 distance from Earth [AU]: 2.99630 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.010", 0.001", 105.324° remarks: * orbital elements for (4382)Stravinsky : Mean anomaly = 225.8374410165 deg Arg. of pericenter = 251.2227987407 deg Long. of node = 120.9733894820 deg Inclination = 6.2405329371 deg Eccentricity = 0.1940015123 Semimajor axis = 2.5431229675 AU Perihelion dist = 2.0497532657 AU Mag: H = 12.48, G = 0.15 Epoch of elements : MJD 60349.84982641 TDT (2024 Feb 09.8498) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,0.38,2024,2,9,20.395834,-0.029625,-0.300860,13.005420,-1.193313,-0.005701,0.001192,0.000000,0.000000 157.9525,-15.1547,-122.39,-14.63,False UCAC4 375-075753,16.19875008,-15.0917951,12.41,11.89,11.61,0.0,0,,16.22130621,-15.1547101,6.28,6.11,0,0,0 4382,Stravinsky,18.17,8.767,2.9963,0,0,2.637,-3.51,,1.0,0 0,225.6309,2024,2,9,251.2228,120.9734,6.2405,0.19400,2.54312,2.04975,12.48,5.0,0.15 1.481,0.0097,0.0010,105,0.0020,Known errors,0.94,0,-1,-1 20240209_075753,60138.16 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 03:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org