Английская Википедия:50719 Elizabethgriffin
Шаблон:Use dmy dates Шаблон:Infobox planet
50719 Elizabethgriffin, provisional designation Шаблон:Mp, is a stony Maria asteroid and exceptionally slow rotator from the central region of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered on 1 March 2000, by astronomers with the Catalina Sky Survey at Mount Lemmon Observatory, Arizona, United States. It was named for Canadian astronomer Шаблон:MoMP.[1]
Classification and orbit
The stony S-type asteroid is a member of the Maria family (Шаблон:Small),[2][3] located in the Eunomia region in the intermediate main-belt. It orbits the Sun in the central main-belt at a distance of 2.2–2.9 AU once every 4 years and 2 months (1,517 days; semi-major axis of 2.58 AU). Its orbit has an eccentricity of 0.13 and an inclination of 14° with respect to the ecliptic.[4] A first precovery was taken at Lowell Observatory (LONEOS) in 1998, extending the asteroid's observation arc by 2 years prior to its discovery.[1]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 20 November 2002.[5] It was named after Elizabeth Griffin (born 1942) a Canadian astronomer who studies binary stars spectroscopically. She has been an advocate for the preservation and digitization of astronomic photographic plates.[1] The official Шаблон:MoMP was published by the Minor Planet Center on 6 April 2019 (Шаблон:Small).[5]
Physical characteristics
Slow rotator
In August 2010, a rotational lightcurve of Elizabethgriffin was obtained from photometric observations by astronomers at the Palomar Transient Factory in California. It gave an exceptionally long rotation period of 1256 hours with a brightness variation of 0.42 magnitude (Шаблон:Small).[6] This makes the asteroid the 5th slowest rotating minor planet known to exist.
Diameter and albedo
According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Elizabethgriffin measures 3.3 kilometers in diameter and its surface has an albedo of 0.37,[7][8] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.21 and calculates a diameter of 3.4 kilometers with an absolute magnitude of 14.65.[9]
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 (50001)-(55000) – 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
- Maria asteroids
- Eunomia asteroids
- Discoveries by the Catalina Sky Survey
- Named minor planets
- Slow rotating minor planets
- Astronomical objects discovered in 2000
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