IOTA/IOTA-ES occultation update for (7065) Fredschaaf / TYC 5764-00895-1 event on 2024 Dec 15, 12:45 UT Visible from Summary ------- On 2024 Dec 15 UT, the 16.129193250028 km diameter asteroid (7065) Fredschaaf will occult a 9.8 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.80 mag to 18.59 mag (the magnitude of the asteroid) for at most 0.430 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 Dec 15, 12:43 - 2024 Dec 15, 12:48 * geocentric midpoint of event [JD]: 2460660.03182817 * magnitude of target star: 9.79 * magnitude drop [mag]: 8.80 * estimated maximum duration [s]: 0.430 * Moon: 100 % sunlit, 134° distance * Sun: 47° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 78°) * approx speed of asteroid's shadow [km/s]: 38.2195 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5764-00895-1 by 7065 Fredschaaf on 2024 Dec 15 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 - 55 0 0 - 8 42 49 12 43 3.4 0 103 46 - 8 47 27 .. .. .. - 8 48 15 .. .. .. .... - 54 0 0 - 8 56 14 12 43 3.4 1 103 47 - 9 0 51 - 8 51 37 - 9 1 39 - 8 50 48 0.06 - 53 0 0 - 9 9 25 12 43 3.5 2 102 48 - 9 14 2 - 9 4 48 - 9 14 51 - 9 4 0 0.01 - 52 0 0 - 9 22 23 12 43 3.6 3 102 49 - 9 27 0 - 9 17 47 - 9 27 48 - 9 16 58 -0.01 - 51 0 0 - 9 35 8 12 43 3.8 4 102 50 - 9 39 44 - 9 30 32 - 9 40 33 - 9 29 43 -0.01 - 50 0 0 - 9 47 39 12 43 4.0 5 102 51 - 9 52 15 - 9 43 3 - 9 53 3 - 9 42 14 -0.02 - 49 0 0 - 9 59 56 12 43 4.3 6 102 52 -10 4 32 - 9 55 20 -10 5 20 - 9 54 31 -0.02 - 48 0 0 -10 11 58 12 43 4.6 7 102 53 -10 16 34 -10 7 22 -10 17 22 -10 6 34 -0.03 - 47 0 0 -10 23 46 12 43 5.0 8 101 54 -10 28 22 -10 19 11 -10 29 10 -10 18 23 -0.03 - 46 0 0 -10 35 20 12 43 5.5 9 101 55 -10 39 56 -10 30 45 -10 40 44 -10 29 57 -0.03 - 45 0 0 -10 46 39 12 43 5.9 10 101 56 -10 51 14 -10 42 4 -10 52 3 -10 41 16 -0.03 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.011", 0.001", 78.076° remarks: * orbital elements for (7065)Fredschaaf : Mean anomaly = 311.6550348260 deg Arg. of pericenter = 178.5970813465 deg Long. of node = 199.1623476689 deg Inclination = 7.5272882402 deg Eccentricity = 0.0356102303 Semimajor axis = 2.7773710908 AU Perihelion dist = 2.6784682667 AU Mag: H = 12.99, G = 0.15 Epoch of elements : MJD 60659.53182792 TDT (2024 Dec 15.5318) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472023Apr25,0.43,2024,12,15,12.763876,-0.008672,0.039429,21.162444,4.184198,0.004074,0.001493,-0.000001,0.000000 36.2501,-12.6126,-12.61,-23.30,False TYC 5764-00895-1,20.80244950,-12.7034471,10.75,9.79,9.27,0.2,0,,20.82504554,-12.6126239,8.80,8.87,0,0,0 7065,Fredschaaf,18.59,16.605,3.2802,0,0,3.877,11.22,,1.4,0 0,311.5418,2024,12,15,178.5971,199.1623,7.5273,0.03561,2.77737,2.67847,12.99,5.0,0.15 1.088,0.0110,0.0006,78,0.0006,Known errors,1.07,0,-1,-1 20241215_0895-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:46 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org