IOTA/IOTA-ES occultation update for (125) Liberatrix / TYC 1303-01115-1 event on 2024 Jan 25, 00:36 UT Visible from Summary ------- On 2024 Jan 25 UT, the 44.645 km diameter asteroid (125) Liberatrix will occult a 10.3 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.44 mag to 13.70 mag (the magnitude of the asteroid) for at most 5.340 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: 99 * date and approx. time of event: 2024 Jan 25, 00:24 - 2024 Jan 25, 00:48 * geocentric midpoint of event [JD]: 2460334.52551734 * magnitude of target star: 10.31 * magnitude drop [mag]: 3.44 * estimated maximum duration [s]: 5.340 * Moon: 99 % sunlit, 30° distance * Sun: 143° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 48 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 3.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.008", 113°) * approx speed of asteroid's shadow [km/s]: 8.3646 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1303-01115-1 by 125 Liberatrix on 2024 Jan 25 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 -135 0 0 - 8 41 50 0 48 30.2 0 72 37 - 8 28 2 - 8 55 39 - 8 19 58 - 9 3 46 .... -134 0 0 - 8 23 18 0 48 30.0 1 72 36 - 8 9 32 - 8 37 6 - 8 1 28 - 8 45 12 0.20 -133 0 0 - 8 5 6 0 48 29.5 3 72 35 - 7 51 21 - 8 18 53 - 7 43 18 - 8 26 58 0.29 -132 0 0 - 7 47 14 0 48 28.7 4 72 34 - 7 33 30 - 8 0 59 - 7 25 28 - 8 9 3 0.33 -131 0 0 - 7 29 41 0 48 27.6 5 72 33 - 7 15 59 - 7 43 25 - 7 7 58 - 7 51 28 0.36 -130 0 0 - 7 12 29 0 48 26.3 6 72 31 - 6 58 48 - 7 26 11 - 6 50 48 - 7 34 14 0.37 -129 0 0 - 6 55 38 0 48 24.8 7 72 30 - 6 41 58 - 7 9 18 - 6 33 58 - 7 17 20 0.38 -128 0 0 - 6 39 7 0 48 22.9 8 71 29 - 6 25 29 - 6 52 46 - 6 17 30 - 7 0 47 0.38 -127 0 0 - 6 22 57 0 48 20.9 9 71 28 - 6 9 20 - 6 36 35 - 6 1 22 - 6 44 35 0.39 -126 0 0 - 6 7 8 0 48 18.5 10 71 27 - 5 53 33 - 6 20 45 - 5 45 35 - 6 28 44 0.39 -125 0 0 - 5 51 41 0 48 15.9 11 71 26 - 5 38 6 - 6 5 16 - 5 30 10 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.019", 0.008", 113.159° remarks: * orbital elements for (125)Liberatrix : Mean anomaly = 180.1752534580 deg Arg. of pericenter = 109.8501442400 deg Long. of node = 168.9431744844 deg Inclination = 4.6651379813 deg Eccentricity = 0.0810504340 Semimajor axis = 2.7420066536 AU Perihelion dist = 2.5197658244 AU Mag: H = 9.00, G = 0.33 Epoch of elements : MJD 60334.02551713 TDT (2024 Jan 25.0255) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1002023Apr27,5.34,2024,1,25,0.612416,-0.086059,-0.369609,-4.598163,1.070872,0.003552,0.000563,0.000001,0.000000 -45.2319,17.2889,173.84,-19.13,False TYC 1303-01115-1,5.82886629,17.2813427,10.37,10.31,10.28,0.0,0,,5.85244211,17.2889317,3.43,3.04,0,0,0 125,Liberatrix,13.70,44.645,2.1190,0,0,-1.331,4.45,,2.6,0 0,179.9526,2024,1,24,109.8501,168.9432,4.6651,0.08105,2.74201,2.51977,9.00,5.0,0.15 1.293,0.0187,0.0080,113,0.0085,Known errors,1.04,0,-1,-1 20240125_1115-1,60137.03 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:43 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org