Английская Википедия:(15700) 1987 QD

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Шаблон:Infobox planet

Шаблон:Mp, provisional designation Шаблон:Mp, is a Mars-crossing asteroid and a binary candidate from inside the innermost region of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered on 24 August 1987, by American astronomer Stephen Singer-Brewster at the Palomar Observatory in California.[1] The likely spherical X-type asteroid has a rotation period of 3.1 hours. The suspected presence of a kilometer-sized minor-planet moon was announced in November 2000.[2]

Orbit and classification

Шаблон:Mp is a Mars-crossing asteroid, a member of the dynamically unstable group, located between the main belt and near-Earth populations, and crossing the orbit of Mars at 1.666 AU. It orbits the Sun inside the innermost region of the asteroid belt at a distance 1.5–2.9 AU once every 3 years and 3 months (1,199 days; semi-major axis of 2.21 AU). Its orbit has an eccentricity of 0.31 and an inclination of 27° with respect to the ecliptic.[3]

The body's observation arc begins with a precovery published by the Digitized Sky Survey and taken at Palomar in May 1954, more than 33 years prior to its official discovery observation.[1] It will pass Шаблон:Convert from the main-belt asteroid 7 Iris on 3 September 2173.[3]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 26 July 2000 (Шаблон:Small).[4] As of 2018, it has not been named.[1]

Physical characteristics

In the SDSS-based taxonomy and according to the survey conducted by Pan-STARRS, Шаблон:Mp is an X-type asteroid.[5][6][7] It has also been classified as a common, stony S-type asteroid.[5][8]

Rotation period

In September 2010, a first rotational lightcurve of Шаблон:Mp was obtained from photometric observations by Brian Skiff. Lightcurve analysis gave a rotation period of 3.068 hours and a brightness variation of 0.07 magnitude (Шаблон:Small).[5]Шаблон:Efn Within less than two weeks, follow-up observations by a large international collaboration of astronomers determined a refined period of Шаблон:Val hours with a low amplitude of 0.07 magnitude, indicating that the body has a spherical shape (Шаблон:Small).[9]Шаблон:Efn An alternative observation that gave a tentative period 9.709 hours received a poor quality rating (Шаблон:Small).[5][10]

Strong binary candidate

The photometric observations during September and October 2010 revealed that Шаблон:Mp is a candidate for a synchronous binary asteroid with a minor-planet moon orbiting it every Шаблон:Val hours at an estimated average distance of Шаблон:Val.[2] The findings were announced on 6 November 2009.[9] The lightcurve indicated mutual occultation events, however, a conclusive solution for the orbit period was not obtained.Шаблон:Efn The Johnston's archive estimates a diameter of 1.23 kilometer for the satellite, or 31% the size of its primary.[2]

The international collaboration included Richard Durkee at the Shed of Science Observatory Шаблон:Obscode, Petr Pravec, Kamil Hornoch and Peter Kušnirák at Ondřejov Observatory, Donald Pray at Carbuncle Hill Observatory Шаблон:Obscode, David Higgins at Canberra Шаблон:Obscode, Jozef Világi and Štefan Gajdoš at Modra Observatory, Judit Györgyey Ries at McDonald Observatory and Julian Oey at Leura Observatory Шаблон:Obscode, as well as astronomers at the Kharkiv Kharkov Шаблон:Obscode, Simeiz and Skalnate Pleso observatories.[9]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Шаблон:Mp measures 2.95 kilometers in diameter and its surface has an albedo of 0.268,[11] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and derives a diameter of 3.04 kilometers based on an absolute magnitude of 14.99.[5]

Notes

Шаблон:Notelist

References

Шаблон:Reflist

External links

Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies

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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 Ошибка цитирования Неверный тег <ref>; для сносок johnstonsarchive не указан текст
  3. ↑ 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Circulars-Archive не указан текст
  5. ↑ 5,0 5,1 5,2 5,3 5,4 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Veres-2015 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок SDSS-Taxonomy не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Carry-2016 не указан текст
  9. ↑ 9,0 9,1 9,2 Ошибка цитирования Неверный тег <ref>; для сносок Durkee-2010c не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Vander-Haagen-2011b не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Ali-Lagoa-2017 не указан текст
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