Английская Википедия:2301 Whitford

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Шаблон:Use dmy dates Шаблон:Infobox planet

2301 Whitford, provisional designation Шаблон:Mp, is a background asteroid from the outer regions of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered on 20 November 1965, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in the United States.[1] The asteroid was named for American physicist and astronomer Albert Whitford.[1] The uncommon L-type asteroid has a rotation period of 14.3 hours.[2]

Orbit and classification

Whitford is a non-family asteroid from the main belt's background population.[3] It orbits the Sun in the outer main-belt at a distance of 2.5–3.9 AU once every 5 years and 8 months (2,073 days; semi-major axis of 3.18 AU). Its orbit has an eccentricity of 0.21 and an inclination of 12° with respect to the ecliptic.[4]

The asteroid was first observed as Шаблон:Mp at Lowell Observatory in October 1931. The body's observation arc begins ten years prior to its official discovery observation with its observation as Шаблон:Mp at Goethe Link Observatory in January 1955.[1]

Physical characteristics

Whitford has been characterized as an uncommon L-type asteroid by Pan-STARRSШаблон:' photometric survey. It is also characterized as a common S-type asteroid in the SDSS-MFB (Masi Foglia Binzel) taxonomy.[2]Шаблон:Efn

Rotation period

In April 2012, a rotational lightcurve of Whitford was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 14.275 hours with a brightness amplitude of 0.35 magnitude (Шаблон:Small),[5] superseding a previous measurement of 27.1 hours (Шаблон:Small).Шаблон:Efn

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Whitford measures between 17.40 and 19.47 kilometers in diameter and its surface has an albedo between 0.223 and 0.240.[6][7]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 16.56 kilometers based on an absolute magnitude of 11.27.[2]

Naming

This minor planet was named after American physicist and astronomer Albert Whitford (1905–2002), who was a pioneer in photoelectric photometry. Whitford was also a director at the Washburn and Lick observatories, as well as a former president of the American Astronomical Society.[1] The official naming citation was published by the Minor Planet Center on 20 December 1983 (Шаблон:Small).[8]

Notes

Шаблон:Notelist

References

Шаблон:Reflist

External links

Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control

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  1. ↑ 1,0 1,1 1,2 1,3 Ошибка цитирования Неверный тег <ref>; для сносок MPC-object не указан текст
  2. ↑ 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AstDys-object не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Waszczak-2015 не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2012 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AKARI не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Circulars-Archive не указан текст
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