IOTA/IOTA-ES occultation update for (119066) 2001 KJ76 / 2UCAC 20230898 event on 2023 Jul 29, 16:11 UT Visible from Summary ------- On 2023 Jul 29 UT, the 144.5 km diameter asteroid (119066) 2001 KJ76 will occult a 11.8 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 11.29 mag to 23.04 mag (the magnitude of the asteroid) for at most 7.570 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: 0 * date and approx. time of event: predicted path center does not land on Earth. * geocentric midpoint of event [JD]: 2460155.10004300 * magnitude of target star: 11.75 * magnitude drop [mag]: 11.29 * estimated maximum duration [s]: 7.570 * Moon: 86 % sunlit, 8° distance * Sun: 144° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 145 * 1 sigma uncertainty interval [path widths]: +/- 695.08 * 1 sigma uncertainty interval [seconds]: +/- 57346.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 37.208, +/- 4.441) * 1 sigma uncertainty ellipse (major, minor, PA): (37.341", 3.127", 95°) * approx speed of asteroid's shadow [km/s]: 19.0858 * website for maps: http://www.asteroidoccultation.com Path Coordinates: No Lat/Long file for this path. Data for the target star ------------------------ * name: 2UCAC 20230898 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 02 29.1672 DE: -28 11 51.546 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 02 29.1672 DE: -28 11 51.546 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (119066) 2001 KJ76 asteroid class: TNO approx. diameter [km]: 145 approx. diameter ["]: 0.005 distance from Earth [AU]: 40.37920 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#10 date of fit: 2021 Apr 13 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): 37.341", 3.127", 94.862° remarks: * orbital elements for (119066)2001 KJ76 : Mean anomaly = 316.9446259468 deg Arg. of pericenter = 273.6387366017 deg Long. of node = 47.7892713226 deg Inclination = 6.7489052530 deg Eccentricity = 0.0807587818 Semimajor axis = 43.6411054869 AU Perihelion dist = 40.1167029726 AU Mag: H = 6.52, G = 0.15 Epoch of elements : MJD 60154.67486111 TDT (2023 Jul 29.6749) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#102021Apr13,7.57,2023,7,29,14.401032,-0.235530,-5.128953,-10.761168,0.495605,0.003385,0.000419,0.000001,0.000000 108.0001,-28.1982,-34.38,18.71,False 2UCAC 20230898,18.04143533,-28.1976515,0.00,11.75,0.00,0.0,0,,18.06645555,-28.1981937,11.29,0.00,0,0,0 119066,2001 KJ76,23.04,144.5,40.3792,0,0,-0.177,0.11,,14.4 0,316.9423,2023,7,29,273.6387,47.7893,6.7489,0.08076,43.64111,40.11670,6.80,5.0,0.15 696.076,37.3413,3.1267,95,3.4296,Known errors,-1.00,-1,-1,-1 20230729_230898,59745.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Jun 15, 04:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org