10502 Armaghobs

Mars-crossing asteroid October 2019 yes 10502 Armaghobs #FA8072 22 August 1987 E. F. Helin Palomar Obs. (10502) Armaghobs 1987 QF 61980 PJ 21994 RJ 29 ɑr ˈ m ɑː ə b z ar MAH əbs Armagh Observatory(in Northern Ireland) Mars-crosser 4 September 2017 (JD 2458000.5) 0 36.73 yr (13,416 days) 3.0439 AU 1.5745 AU 2.3092 AU 0.3182 3.51 yr (1,282 days) 145.86° 0.2809 ms / day 21.927° 170.23° 263.26° 2.61 0.59 km2.97 km (calculated) 24.978 0.002 h 0.20 (assumed)0.22 0.14 SQ 15.015.1815.44 0.08 10502 Armaghobs (ɑr ˈ m ɑː ə b z ar MAH əbz), provisional designation 1987 QF 6, is an eccentric, stony asteroid and Mars-crosser from the inner regions of the asteroid belt, approximately 2.6 kilometers in diameter. The asteroid was discovered on 22 August 1987, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States. It was named for the Armagh Observatory in Northern Ireland. Orbit and classification Armaghobs orbits the Sun in the inner main-belt at a distance of 1.6–3.0 AU once every 3 years and 6 months (1,282 days). Its orbit has an eccentricity of 0.32 and an inclination of 22° with respect to the ecliptic. It was first identified as 1980 PJ 2 at ESO's La Silla Observatory in 1980, extending the body's observation arc by 7 years prior to its official discovery observation at Palomar. Physical characteristics The Armaghobs has been characterized as a Q-type asteroid by Pan-STARRS photometric survey. Lightcurve In February 2013, a rotational lightcurve of Armaghobs was obtained from photometric observations by Kevin Hills at the Riverland Dingo Observatory at Moorook, South Australia. Lightcurve analysis gave a rotation period of 24.978 hours with a brightness variation of 0.51 magnitude (U=2). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Armaghobs measures 2.61 kilometers in diameter and its surface has an albedo of 0.22. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20, and calculates a diameter of 2.97 kilometers with an absolute magnitude of 15.0. Naming This minor planet was named after the Armagh Observatory in Northern Ireland. The present-day astronomical research institute was founded by Archbishop Richard Robinson in 1790. The Estonian astronomer Ernst Öpik, after whom 2099 Öpik is named, had been a long-time member of the Observatory. It is also known for the invention of the cup-anemometer by Thomas Robinson, the New General Catalogue compiled by John Dreyer, and Lindsay's Armagh-Dunsink-Harvard telescope. The official naming citation was published by the Minor Planet Center on 9 January 2001 (M.P.C. 41937). References 30em 2017-05-04 last obs. JPL Small-Body Database Browser: 10502 Armaghobs (1987 QF6) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010502 Jet Propulsion Laboratory 23 June 2017 Dictionary of Minor Planet Names – (10502) Armaghobs Schmadel Lutz D. Springer Berlin Heidelberg 736 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_8003 (10502) Armaghobs 10502 Armaghobs (1987 QF6) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=10502 28 April 2016 10502 28 April 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 28 April 2016 Hills, Kevin January 2014 Asteroid Lightcurve Analysis at Riverland Dingo Observatory (RDO): 2013 Results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41....2H The Minor Planet Bulletin 41 1 2–3 1052-8091 2014MPBu...41....2H 28 April 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 28 April 2016 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 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 (10001)-(15000) – Minor Planet Center 10502 10501 Ardmacha 10502 (10503) 1987 SG13 010502 Armaghobs Category:Named minor planets 19870822