10502 Armaghobs

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 {{mp|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.

The Armaghobs has been characterized as a relatively rare Q-type asteroid by Pan-STARRS photometric survey.

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 {{val|24.978}} hours with a brightness variation of 0.51 magnitude ({{small|U=2}}).

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.

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 {{small|(M.P.C. 41937)}}.

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|type = 2017-05-04 last obs.

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|publisher = Jet Propulsion Laboratory

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• [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
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• {{AstDys|10502}}
• {{JPL small body}}

{{Minor planets navigator |10501 Ardmacha |number=10502 |(10503) 1987 SG13}}

{{Small Solar System bodies}}

{{Authority control}}

{{DEFAULTSORT:Armaghobs}}

010502

Armaghobs

Category:Named minor planets

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