Английская Википедия:145534 Jhongda

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Use dmy dates Шаблон:Infobox planet

145534 Jhongda, provisional designation Шаблон:Mp, is an asteroid and member of the stony Merxia family, orbiting in the central region of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered by Taiwanese astronomers Yang Tingzhang and Ye Quanzhi at the Lulin Observatory on 1 April 2006. The likely elongated asteroid has a rotation period of 4.5 hours.[1] It was named for the Taiwanese National Central University.[2]

Orbit and classification

Jhongda is a member of the Merxia family (Шаблон:Small),[3][4] a large family of stony S-type asteroids named after its parent body 808 Merxia.[5]Шаблон:Rp It orbits the Sun in the central main-belt at a distance of 2.3–3.1 AU once every 4 years and 5 months (1,625 days; semi-major axis of 2.71 AU). Its orbit has an eccentricity of 0.14 and an inclination of 6° with respect to the ecliptic.[6] The first precovery was taken by Spacewatch in February 1992, extending the asteroid's observation arc by 14 years prior to its discovery at the Lulin Observatory.[2]

Naming

This minor planet was named after the Taiwanese National Central University, which controls the discovering Lulin Observatory. "Jhongda" is the University's abbreviation in Mandarin Chinese.[2] The official Шаблон:MoMP was published by the Minor Planet Center on 2 April 2007 (Шаблон:Small).[7]

Physical characteristics

In January 2014, a rotational lightcurve of Jhongda was obtained from photometric observation by astronomers at the Intermediate Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of Шаблон:Val hours with a high brightness variation of 0.67 in magnitude (Шаблон:Small) indicative of an elongated, non-spherical shape.[8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 3.54 kilometers with an absolute magnitude of 15.98.[1] Conversely, Jhongda measure only 2.1 kilometers for an albedo of 0.23,[9] which is typical for the stony members of the Merxia family.[5]Шаблон:Rp

References

Шаблон:Reflist

External links

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

  1. 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  2. 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок MPC-object не указан текст
  3. Ошибка цитирования Неверный тег <ref>; для сносок Ferret не указан текст
  4. Ошибка цитирования Неверный тег <ref>; для сносок AstDys-object не указан текст
  5. 5,0 5,1 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 MPC-Circulars-Archive не указан текст
  8. Ошибка цитирования Неверный тег <ref>; для сносок Chang-2015 не указан текст
  9. Ошибка цитирования Неверный тег <ref>; для сносок h не указан текст