185638 Erwinschwab

Main-belt Asteroid October 2019 yes 185638 Erwinschwab #D6D6D6 OAM La Sagra Obs. 1 March 2008 (185638) Erwinschwab 2008 EU 71995 UZ 531999 XL 2462006 SR 872006 UP 322 Erwin Schwab(discoverer of minor planets)   main-belt(inner)Nysa–Polana complex 4 September 2017 (JD 2458000.5) 0 20.65 yr (7,543 days) 2.7570 AU 2.0058 AU 2.3814 AU 0.1577 3.67 yr (1,342 days) 212.35° 0.2682 ms / day 2.8854° 33.611° 134.13° 0.95 km (estimate at 0.20)1.8 km (estimate at 0.057) 17.517.6 185638 Erwinschwab (provisional designation 2008 EU 7) is a potentially sub-kilometer asteroid from the inner regions of the asteroid belt. It was discovered on 1 March 2008, by OAM-astronomers at the La Sagra Observatory in southern Spain. The asteroid is estimated to measure between 950 meters and 1.8 kilometers in diameter and was named after German astronomer Erwin Schwab in 2009. Orbit and classification Erwinschwab is a member of the Nysa–Polana complex, a collection of overlapping asteroid families.23 The asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.8 AU once every 3 years and 8 months (1,342 days). Its orbit has an eccentricity of 0.16 and an inclination of 3° with respect to the ecliptic. The body's observation arc begins with its first identification as 1995 UZ53 by Spacewatch at Kitt Peak Observatory in October 1995, more than 12 years prior to its official discovery observation at La Sagra in 2008. Physical characteristics The asteroid's spectral type is unknown. The Nysa-Polana complex consist of S-, F- and C-type asteroids (SFC).23 Diameter and albedo Erwinschwab has not been observed by any space-based telescope such as the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite or the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer. Based on an assumed albedo of 0.20, which is typical for silicaceous asteroid, the asteroid measures 0.95 kilometers in diameter for an absolute magnitude of 17.5. Since members of the Nysa-Polana complex also include carbonaceous asteroid, Erwinschwab's albedo may also be estimated at 0.057, which translates into a larger diameter of 1.8 kilometers. Rotation period As of 2017, no rotational lightcurve of Erwinschwab has been obtained from photometric observations. The body's rotation period, pole axis and shape remain unknown. Naming This minor planet was named after German amateur astronomer Erwin Schwab (born 1964), a prolific discoverer of minor planets at the Starkenburg Observatory, Tzec Maun and Taunus observatories since the early 1980s. During his astrometric observation at Taunus, Schwab has collaborated with astronomer Rainer Kling. The official naming citation was published by the Minor Planet Center on 7 June 2009 (M.P.C. 66244). References 30em 2016-06-09 last obs. JPL Small-Body Database Browser: 185638 Erwinschwab (2008 EU7) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2185638 Jet Propulsion Laboratory 25 October 2017 185638 Erwinschwab (2008 EU7) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=185638 25 October 2017 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 25 October 2017 Asteroid 185638 Erwinschwab – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=185638+Erwinschwab#Asteroid%20185638%20ErwinschwabEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 27 October 2019 October 2026 InternetArchiveBot D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 Asteroid Size Estimator CNEOS – NASA/JPL https://cneos.jpl.nasa.gov/tools/ast_size_est.html 25 October 2017 185638 25 October 2017 External links 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 (185001)-(190000) – Minor Planet Center 185638 185638 185639 Rainerkling 185638 185638 Category:Named minor planets 20080301