IOTA/IOTA-ES occultation update for (134) Sophrosyne / UCAC4 276-132706 event on 2024 Mar 07, 18:54 UT Visible from Summary ------- On 2024 Mar 07 UT, the 104.99 km diameter asteroid (134) Sophrosyne will occult a 11.5 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 2.99 mag to 14.38 mag (the magnitude of the asteroid) for at most 4.720 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 Mar 07, 18:50 - 2024 Mar 07, 18:59 * geocentric midpoint of event [JD]: 2460377.28809620 * magnitude of target star: 11.46 * magnitude drop [mag]: 2.99 * estimated maximum duration [s]: 4.720 * Moon: 10 % sunlit, 42° distance * Sun: 79° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 108 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.007, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.007", 0.004", 102°) * approx speed of asteroid's shadow [km/s]: 22.2444 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 276-132706 by 134 Sophrosyne on 2024 Mar 7 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 90 0 0 0 14 54 18 50 13.0 0 125 -79 - 0 21 1 .. .. .. - 0 26 16 .. .. .. .... 91 0 0 - 0 27 29 18 50 13.0 1 125 -78 - 1 3 33 0 8 27 - 1 8 48 0 13 41 0.28 92 0 0 - 1 10 21 18 50 13.2 2 125 -77 - 1 46 32 - 0 34 16 - 1 51 49 - 0 29 1 0.27 93 0 0 - 1 53 40 18 50 13.6 4 125 -75 - 2 29 59 - 1 17 27 - 2 35 18 - 1 12 12 0.26 94 0 0 - 2 37 25 18 50 14.1 5 125 -74 - 3 13 53 - 2 1 5 - 3 19 12 - 1 55 48 0.26 95 0 0 - 3 21 36 18 50 14.7 6 125 -73 - 3 58 11 - 2 45 8 - 4 3 31 - 2 39 50 0.26 96 0 0 - 4 6 10 18 50 15.5 7 125 -72 - 4 42 52 - 3 29 35 - 4 48 14 - 3 24 16 0.26 97 0 0 - 4 51 6 18 50 16.4 9 125 -71 - 5 27 55 - 4 14 24 - 5 33 18 - 4 9 4 0.26 98 0 0 - 5 36 22 18 50 17.4 10 124 -69 - 6 13 18 - 4 59 34 - 6 18 42 - 4 54 12 0.26 99 0 0 - 6 21 57 18 50 18.6 11 124 -68 - 6 59 0 - 5 45 2 - 7 4 24 - 5 39 40 0.26 100 0 0 - 7 7 49 18 50 19.9 12 124 -67 - 7 44 58 - 6 30 48 - 7 50 23 - 6 25 26 0.26 101 0 0 - 7 53 57 18 50 21.4 14 124 -66 - 8 31 11 - 7 16 50 - 8 36 38 - 7 11 27 0.26 102 0 0 - 8 40 18 18 50 23.0 15 124 -64 - 9 17 38 - 8 3 6 - 9 23 5 - 7 57 41 0.26 103 0 0 - 9 26 51 18 50 24.7 16 124 -63 -10 4 16 - 8 49 34 -10 9 43 - 8 44 8 0.26 104 0 0 -10 13 33 18 50 26.6 17 124 -62 -10 51 3 - 9 36 11 -10 56 31 - 9 30 46 0.26 105 0 0 -11 0 23 18 50 28.6 19 123 -61 -11 37 57 -10 22 57 -11 43 26 -10 17 31 0.26 106 0 0 -11 47 20 18 50 30.8 20 123 -59 -12 24 57 -11 9 50 -12 30 27 -11 4 23 0.26 107 0 0 -12 34 20 18 50 33.1 21 123 -58 -13 12 1 -11 56 47 -13 17 31 -11 51 19 0.26 108 0 0 -13 21 22 18 50 35.5 22 123 -57 -13 59 6 -12 43 46 -14 4 36 -12 38 18 0.26 109 0 0 -14 8 23 18 50 38.0 24 122 -56 -14 46 10 -13 30 45 -14 51 41 -13 25 17 0.26 110 0 0 -14 55 23 18 50 40.7 25 122 -54 -15 33 12 -14 17 43 -15 38 43 -14 12 14 0.26 111 0 0 -15 42 19 18 50 43.5 26 122 -53 -16 20 9 -15 4 37 -16 25 40 -14 59 8 0.26 112 0 0 -16 29 8 18 50 46.4 27 121 -52 -17 6 59 -15 51 25 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0.27 - 90 0 0 -32 18 53 18 59 18.4 16 238 60 -32 55 5 -31 42 48 -33 0 22 -31 37 34 0.27 - 89 0 0 -31 41 54 18 59 19.9 15 238 61 -32 18 14 -31 5 42 -32 23 32 -31 0 26 0.28 - 88 0 0 -31 4 19 18 59 21.2 14 237 61 -31 40 46 -30 27 59 -31 46 5 -30 22 42 0.28 - 87 0 0 -30 26 8 18 59 22.5 13 237 61 -31 2 42 -29 49 41 -31 8 2 -29 44 23 0.28 - 86 0 0 -29 47 22 18 59 23.7 12 236 61 -30 24 2 -29 10 48 -30 29 23 -29 5 29 0.28 - 85 0 0 -29 8 1 18 59 24.8 11 236 61 -29 44 49 -28 31 22 -29 50 11 -28 26 2 0.29 - 84 0 0 -28 28 8 18 59 25.8 9 235 61 -29 5 1 -27 51 22 -29 10 24 -27 46 1 0.29 - 83 0 0 -27 47 42 18 59 26.7 8 235 61 -28 24 41 -27 10 51 -28 30 5 -27 5 29 0.30 - 82 0 0 -27 6 45 18 59 27.4 7 234 61 -27 43 50 -26 29 48 -27 49 14 -26 24 26 0.30 - 81 0 0 -26 25 18 18 59 28.1 6 234 60 -27 2 28 -25 48 16 -27 7 53 -25 42 53 0.31 - 80 0 0 -25 43 22 18 59 28.7 5 234 60 -26 20 36 -25 6 15 -26 26 2 -25 0 51 0.33 - 79 0 0 -25 0 58 18 59 29.2 4 233 60 -25 38 16 -24 23 47 -25 43 43 -24 18 23 0.35 - 78 0 0 -24 18 7 18 59 29.5 3 233 60 -24 55 30 -23 40 52 -25 0 57 -23 35 28 0.39 - 77 0 0 -23 34 51 18 59 29.7 1 232 59 -24 12 17 -22 57 33 -24 17 45 -22 52 8 0.49 - 76 0 0 -22 51 12 18 59 29.8 0 232 59 -23 28 41 .. .. .. -23 34 9 .. .. .. 1.40 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 276-132706 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 51 37.5646 DE: -34 52 40.978 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 51 37.5647 DE: -34 52 40.978 * 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: (134) Sophrosyne asteroid class: approx. diameter [km]: 105 approx. diameter ["]: 0.050 distance from Earth [AU]: 2.87030 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#131 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): 0.007", 0.004", 101.9° remarks: * orbital elements for (134)Sophrosyne : Mean anomaly = 175.7827229072 deg Arg. of pericenter = 85.5658998621 deg Long. of node = 345.8502959065 deg Inclination = 11.6101243436 deg Eccentricity = 0.1149551251 Semimajor axis = 2.5640362384 AU Perihelion dist = 2.2692871318 AU Mag: H = 8.82, G = 0.28 Epoch of elements : MJD 60376.78809604 TDT (2024 Mar 07.7881) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1312023Apr24,4.72,2024,3,7,18.914309,-0.057683,-0.230623,12.177956,-3.055252,-0.005781,-0.000152,0.000000,0.000000 178.6116,-34.8839,-101.01,-4.86,False UCAC4 276-132706,17.86043457,-34.8780495,12.06,11.46,11.14,0.0,0,,17.88715426,-34.8839058,2.99,2.87,0,0,0 134,Sophrosyne,14.38,104.990,2.8703,0,0,3.033,-9.36,,5.2,0 0,175.5935,2024,3,7,85.5659,345.8503,11.6101,0.11496,2.56404,2.26929,8.81,5.0,0.15 1.073,0.0070,0.0037,102,0.0037,Known errors,0.59,0,-1,-1 20240307_132706,60139.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org