IOTA/IOTA-ES occultation update for 2005 TV189 / UCAC4-460-019482 event on 2023 Mar 06, 08:47 UT Visible from Summary ------- On 2023 Mar 06 UT, the 104.7 km diameter asteroid 2005 TV189 will occult a 14.9 mag star in the constellation Monoceros for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.98 mag to 22.85 mag (the magnitude of the asteroid) for at most 10.020 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: 1 * date and approx. time of event: predicted path center does not land on Earth. * geocentric midpoint of event [JD]: 2460009.86447563 * magnitude of target star: 14.87 * magnitude drop [mag]: 7.98 * estimated maximum duration [s]: 10.020 * Moon: 99 % sunlit, 58° distance * Sun: 112° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 105 * 1 sigma uncertainty interval [path widths]: +/- 46.48 * 1 sigma uncertainty interval [seconds]: +/- 1322.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.531, +/- 0.331) * 1 sigma uncertainty ellipse (major, minor, PA): (0.616", 0.110", 121°) * approx speed of asteroid's shadow [km/s]: 10.4544 * website for maps: http://www.asteroidoccultation.com Path Coordinates: No Lat/Long file for this path. Data for the target star ------------------------ * name: UCAC4-460-019482 * constellation : Monoceros * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 32 45.9234 DE: +01 50 12.057 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 32 45.9234 DE: +01 50 12.057 * position source: Gaia DR3 * standard error: RA,DE [mas]: (1.600,1.600) * V mag [mag]: 14.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: 2005 TV189 asteroid class: TNO approx. diameter [km]: 105 approx. diameter ["]: 0.004 distance from Earth [AU]: 32.49060 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#7 date of fit: 2021 Apr 14 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): 0.616", 0.110", 121.021° remarks: * orbital elements for 2005 TV189 : Mean anomaly = 23.5929764039 deg Arg. of pericenter = 184.9797377093 deg Long. of node = 246.1428647997 deg Inclination = 34.3563770772 deg Eccentricity = 0.1902094957 Semimajor axis = 39.4482245011 AU Perihelion dist = 31.9447976136 AU Mag: H = 7.50, G = 0.15 Epoch of elements : MJD 60009.36659722 TDT (2023 Mar 06.3666) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#72021Apr14,10.02,2023,3,6,8.747415,-3.255956,-2.955724,-3.959223,4.375327,0.005631,0.000530,0.000000,-0.000001 163.4513,1.8182,51.62,-5.71,False UCAC4-460-019482,6.54608982,1.8366826,0.00,14.87,0.00,0.0,0,,6.56615013,1.8182361,7.98,0.00,0,0,0 0,2005 TV189,22.85,104.7,32.4906,0,0,-0.072,1.19,,10.5 0,23.5915,2023,3,6,184.9797,246.1429,34.3564,0.19021,39.44822,31.94480,7.50,5.0,0.15 47.477,0.6157,0.1100,121,0.2065,Known errors,-1.00,-1,-1,-1 20230306_019482,59744.96 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Jun 14, 23:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org