Английская Википедия:5542 Moffatt

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Шаблон:Use dmy dates Шаблон:Infobox planet

5542 Moffatt, provisional designation Шаблон:Mp, is a Marian asteroid from the central regions of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered on 6 August 1978, by astronomers at the Perth Observatory in Bickley, Australia.[1] The likely S-type asteroid has a rotation period of 5.19 hours.[2] It was named for Australian Ethelwin Moffatt, a benefactor of the discovering observatory.[1]

Orbit and classification

Moffatt is a core member of the Maria family (Шаблон:Small),[3][4] a large intermediate belt family of stony asteroids.[5] Alternatively, it has also been assigned to the stony Eunomia family (Шаблон:Small), one of the most prominent families in the intermediate main belt with more than 5,000 members.[2]

It orbits the Sun in the central main-belt at a distance of 2.2–3.0 AU once every 4 years and 2 months (1,520 days; semi-major axis of 2.59 AU). Its orbit has an eccentricity of 0.16 and an inclination of 16° with respect to the ecliptic.[6] The body's observation arc begins with its first observation at Palomar Observatory in July 1978, a month prior to its official discovery observation at Bickley.[1]

Physical characteristics

Moffatt is an assumed stony S-type asteroid.[2]

Rotation period

In November 2011, a rotational lightcurve of Moffatt was obtained from photometric observations by Chinese astronomers using the SARA telescopes Шаблон:Obscode of the Southeastern Association for Research in Astronomy at Kitt Peak and CTIO. Lightcurve analysis gave a rotation period of 5.187 hours and a brightness variation of 0.12 magnitude (Шаблон:Small).[7] This supersedes a previous result from a fragmentary lightcurve by Шаблон:MoMP that gave a period of 5.195 hours with an amplitude of 0.27 magnitude (Шаблон:Small).[4]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Moffatt measures 8.597 kilometers in diameter and its surface has a high albedo of 0.345.[8][9] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the parent body of the Eunomia family – and calculates a diameter of 10.06 kilometers based on an absolute magnitude of 12.3.[2]

Naming

This minor planet was named after Australian Ethelwin Moffatt (née Winzar, born 1926), a benefactor of the discovering Perth Observatory and a direct descendant of John Flamsteed (1646–1719), the first Astronomer Royal. The official naming citation was published by the Minor Planet Center on 2 September 2001 (Шаблон:Small).[10]

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 Ошибка цитирования Неверный тег <ref>; для сносок MPC-object не указан текст
  2. ↑ 2,0 2,1 2,2 2,3 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Ferret не указан текст
  4. ↑ 4,0 4,1 Ошибка цитирования Неверный тег <ref>; для сносок Alvarez-2004 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Nesvorny-2014 не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Han-2013b не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2011 не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок WISE не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Circulars-Archive не указан текст
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