IOTA/IOTA-ES occultation update for (10026) Sophiexeon / TYC 252-00130-1 event on 2024 Apr 03, 11:50 UT Visible from Summary ------- On 2024 Apr 03 UT, the 11.6557588515052 km diameter asteroid (10026) Sophiexeon will occult a 7.0 mag star in the constellation Sextans for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 11.67 mag to 18.63 mag (the magnitude of the asteroid) for at most 1.330 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: 78 * date and approx. time of event: 2024 Apr 03, 11:40 - 2024 Apr 03, 11:59 * geocentric midpoint of event [JD]: 2460403.99310742 * magnitude of target star: 6.96 * magnitude drop [mag]: 11.67 * estimated maximum duration [s]: 1.330 * Moon: 36 % sunlit, 143° distance * Sun: 143° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.70 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 103°) * approx speed of asteroid's shadow [km/s]: 9.3389 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 252-00130-1 by 10026 Sophiexeon on 2024 Apr 3 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 30 0 0 .. .. .... .. .. .. .. .. .. 76 6 45 .. .. .. 76 13 16 .. .. .. .... 31 0 1 76 9 7 11 59 13.0 0 65 18 76 13 42 76 4 33 76 20 11 75 58 5 .... 32 0 1 76 15 49 11 59 13.0 1 66 17 76 20 22 76 11 16 76 26 49 76 4 51 -0.75 33 0 1 76 22 13 11 59 12.9 1 67 17 76 26 45 76 17 42 76 33 9 76 11 19 -0.74 34 0 1 76 28 21 11 59 12.9 1 68 17 76 32 51 76 23 52 76 39 13 76 17 31 -0.74 35 0 1 76 34 13 11 59 12.8 1 69 17 .. .. .. 76 29 45 .. .. .. 76 23 26 -0.73 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: TYC 252-00130-1 * constellation : Sextans * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 29 21.0915 DE: +06 15 23.114 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 29 21.0913 DE: +06 15 23.115 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 7.0 * B mag [mag]: 7.8 * Diameter [mas]: 0.50 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (10026) Sophiexeon asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.06610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#44 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): 0.012", 0.001", 103.1° remarks: * orbital elements for (10026)Sophiexeon : Mean anomaly = 222.6744671211 deg Arg. of pericenter = 134.7094922635 deg Long. of node = 182.5612998326 deg Inclination = 8.7428170479 deg Eccentricity = 0.1720799313 Semimajor axis = 2.5708828146 AU Perihelion dist = 2.1284854765 AU Mag: H = 14.00, G = 0.15 Epoch of elements : MJD 60403.49310679 TDT (2024 Apr 03.4931) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#442023Apr25,1.33,2024,4,3,11.834578,0.387813,0.445949,-3.979322,3.456821,0.003320,-0.001051,0.000001,0.000000 147.8362,6.1313,3.26,5.61,False TYC 252-00130-1,10.48919208,6.2564206,7.75,6.96,6.53,0.5,0,,10.51049757,6.1312966,11.67,11.65,0,0,0 10026,Sophiexeon,18.63,12.405,2.0661,0,0,-1.135,14.71,,3.0,0 0,222.5566,2024,4,3,134.7095,182.5613,8.7428,0.17208,2.57088,2.12849,14.00,5.0,0.15 1.707,0.0123,0.0009,103,0.0058,Known errors,1.08,0,-1,-1 20240403_0130-1,60139.27 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org