15268 Wendelinefroger

Stony, spheroidal, and binary main-belt asteroid June 2020 yes 15268 Wendelinefroger #D6D6D6 18 November 1990 E. W. Elst La Silla Obs. (15268) Wendelinefroger 1990 WF 31979 WA 71986 PO 51999 CD 133 Wendeline Froger(Belgian singer) main-belt(inner)Nysa–Polana complex 4 September 2017 (JD 2458000.5) 0 37.29 yr (13,619 days) 2.9209 AU 1.8107 AU 2.3658 AU 0.2346 3.64 yr (1,329 days) 171.04° 0.2709 ms / day 2.7540° 144.06° 210.29° 1CBAT 3.41 km (calculated) 2.4224 0.0001 h 0.20 (assumed) S 14.714.82 0.04 15268 Wendelinefroger (provisional designation 1990 WF 3) is a stony, spheroidal, and binaryCBAT asteroid from the inner regions of the asteroid belt, approximately 3.4 kilometers in diameter. It was discovered on 18 November 1990, by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile, and named after Belgian singer Wendeline Froger. Naming This minor planet is named in honour of Belgian female singer Wendeline Froger (born 1948), who has a soprano voice and performs at church celebrations, weddings and for selected audiences at her residence. She has a preference to sing Lieder by Robert Schumann, after whom the minor planet 4003 Schumann is named. The approved naming citation was published by the Minor Planet Center on 12 December 2008 (M.P.C. 64563). Orbit The S-type asteroid orbits the Sun in the inner main belt at a distance of 1.8–2.9 astronomical units (AU) once every 3 years and 8 months (1,329 days). Its orbit has an eccentricity of 0.23 and an inclination of 3° with respect to the ecliptic. It was first identified as 1979 WA 7 at Crimea–Nauchnij in 1979, extending the asteroid's observation arc by 11 years prior to its discovery. Physical characteristics Primary In October 2008, a rotational lightcurve was obtained from photometric observations at the Leura Observatory (E17), Australia. It gave a rotation period of 2.422 hours with a low brightness variation of 0.07 magnitude, which indicates that the asteroid is of nearly spheroidal shape (U=3). The Collaborative Asteroid Lightcurve Link (CALL) assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.4 kilometer with an absolute magnitude of 14.7. Secondary During the photometric observations in 2008, a minor-planet moon was also discovered, orbiting Wendelinefroger every 25.07 0.02 hours at a distance of 8.7 kilometers. Based on mutual occultations of Wendelinefroger and its moon, the diameter ratio for the two bodies is at least 0.24 (i.e. secondary-to-primary mean diameter ratio),CBAT which translates into an estimated diameter of 0.8 kilometer or more for the asteroid's moon, using CALL's calculated diameter for the primary. Notes CBAT Central Bureau for Astronomical Telegrams - No.1542, 20 October 2008Photometric observations obtained between 24 September and 9 October 2008, showed that 15268 Wendelinefroger is a binary system with an orbital period of 25.07 0.02 hours. The primary has a rotation period of 2.4224 0.0001 hours, with a lightcurve brightness variation of 0.07 magnitude, indicating a nearly spheroidal shape. Mutual eclipse/occultation events give a lower limit on the Ds/Dp of 0.27 (i.e. a secondary-to-primary mean-diameter ratio).Reported by – J. Oey, Leura Observatory, N.S.W., Australia; P. Pravec, P. Kusnirak, and K. Hornoch, Ondrejov Observatory; R. Stephens, Goat Mountain Astronomical Research Station, Yucca Valley, CA, U.S.A.; S. Gajdos and L. Kornos, Modra Observatory; and V. Chiorny, Institute of Astronomy, Kharkiv National University, http://www.cbat.eps.harvard.edu/iau/cbet/001500/CBET001542.txt Electronic Telegram No. 1542 References 30em 2017-03-01 last obs. JPL Small-Body Database Browser: 15268 Wendelinefroger (1990 WF3) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2015268 Jet Propulsion Laboratory 5 July 2017 Dictionary of Minor Planet Names, Addendum to Fifth Edition: 2003–2005 – (15268) Wendelinefroger Schmadel Lutz D. Springer Berlin Heidelberg 69 2009 https://books.google.com/books?id=Ad4_AAAAQBAJ&pg=PA69 978-3-642-01964-7 15268 Wendelinefroger (1990 WF3) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=15268 11 November 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 11 November 2016 Johnston Robert (15268) Wendelinefroger http://www.johnstonsarchive.net/astro/astmoons/am-15268.html johnstonsarchive.net 29 May 2015 15268 11 November 2016 6 J. Oey P. Pravec P. Kusnirak K. Hornoch R. Stephens S. Gajdos L. Kornos V. Chiorny October 2008 (15268) 1990 WF3 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008CBET.1542....1O Central Bureau Electronic Telegrams 1542 1 2008CBET.1542....1O 11 November 2016 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 53493339 11 November 2016 External links CBET 1542, Central Bureau for Astronomical Telegrams, 20 October 2008 Asteroids with Satellites, Robert Johnston, johnstonsarchive.net Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (15001)-(20000) – Minor Planet Center 15268 15267 Kolyma 15268 015268 Category:Discoveries by Eric Walter Elst Category:Named minor planets 015268 19901118