Английская Википедия:31824 Elatus
Шаблон:Short description Шаблон:Use dmy dates Шаблон:Infobox planet
31824 Elatus (Шаблон:IPAc-en, provisional designation: Шаблон:Mp) is a very red centaur from the outer Solar System, approximately Шаблон:Convert in diameter. It was discovered on 29 October 1999, by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory in Arizona, United States.[1] The minor planet was named after Elatus, a centaur from Greek mythology.[2]
Orbit and classification
Elatus orbits the Sun at a distance of 7.3–16.3 AU once every 40 years and 7 months (14,826 days). Its orbit has an eccentricity of 0.38 and an inclination of 5° with respect to the ecliptic.[3]
The body's observation arc begins with a precovery taken by the Sloan Digital Sky Survey at Apache Point Observatory in September 1998, thirteen months prior to its official discovery observation.[1]
Naming
This minor planet was named after Elatus, a centaur from Greek mythology, who was killed during a battle with Heracles (also see 5143 Heracles) by a poisoned arrow that passed through his arm and continued to wound Chiron in the knee (also see 2060 Chiron). The name "Elatus" means "fir man" and is associated with woodlands.[2] The official Шаблон:MoMP was published by the Minor Planet Center on 14 June 2003 (Шаблон:Small).[4]
Physical characteristics
Rotation period
Two rotational lightcurves of Elatus were obtained from photometric observations. Lightcurve analysis gave a longer-than-average rotation period of 26.5 and 26.82 hours with a concurring brightness variation of 0.10 magnitude (Шаблон:Small).[5][6]
Diameter and albedo
According to observations by ESA's Herschel Space Observatory with its PACS instrument and the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer Elatus measures 49.8 and 57.000 kilometers in diameter and its surface has an albedo of 0.049 and 0.050, respectively.[7][8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous minor planets of 0.057 and derives a diameter of 45.87 kilometers based on an absolute magnitude of 10.42.[9]
See also
References
External links
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (30001)-(35000) – Minor Planet Center
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control
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- Английская Википедия
- Centaurs (small Solar System bodies)
- Discoveries by the Catalina Sky Survey
- Named minor planets
- Astronomical objects discovered in 1999
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