Английская Википедия:2001 AV43

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Шаблон:Infobox planet

Шаблон:Mp is a very small, monolithic asteroid and fast rotator, classified as a near-Earth object of the Apollo group, approximately Шаблон:Convert in diameter. It was first observed on 5 January 2001, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[1] The presumed S-type asteroid has a rotation period of only 10 minutes.[2] It has an exceptionally low MOID of 0.66 lunar distance (LD) and will approach Earth at 0.81 LD on 11 November 2029.[3]

Orbit and classification

Шаблон:Mp is a member of the dynamical Apollo group,[3][1] which are Earth-crossing asteroids. Apollo asteroids are the largest subgroup of near-Earth objects. Unlike many Apollo asteroids, this asteroid is not a Mars-crosser, as its aphelion is smaller than the orbit of the Red Planet at 1.66 AU.[3]

This asteroid orbits the Sun at a distance of 0.97–1.59 AU once every 17 months (531 days; semi-major axis of 1.28 AU). Its orbit has an eccentricity of 0.24 and an inclination of 0° with respect to the ecliptic.[3] The body's observation arc begins with a precovery found in ESO's Astrovirtel data archive Шаблон:Obscode, in August 2000, less than 5 months prior to its official discovery observation at Socorro.[1]

Close approaches

Шаблон:Mp has an Earth minimum orbital intersection distance of Шаблон:Convert, which translates into 0.7 lunar distances (LD). Due to its small size, that is, an absolute magnitude fainter than 22, this asteroid is not classified as a potentially hazardous asteroid.[3]

On 18 November 2013, the asteroid passed Earth at 2.7 LD. The angle of approach made it a good target for radar observations.[4]

On 11 November 2029, the orbit of Шаблон:Mp is predicted to bring the asteroid within a nominal distance of Шаблон:Convert or 0.81 LD of Earth. It will also pass the Moon at an even shorter nominal distance of Шаблон:Convert[3]

Physical characteristics

Шаблон:Mp is an assumed stony S-type asteroid.[2]

Rotation period

A rotational lightcurve of Шаблон:Mp was obtained from photometric observations by American astronomers Robert J. Whiteley, Carl Hergenrother and David Tholen. Lightcurve analysis gave a rotation period of 0.1701 hours (612 second) with a brightness amplitude of 0.26 magnitude (Шаблон:Small).[2][5] With such a short period, it is a notable fast rotator. The observers classified it as a "monolithic fast-rotating asteroid" (MFRA).[5]

Diameter and albedo

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 0.03 kilometers based on an absolute magnitude of 24.9.[2]

Numbering and naming

As of 2018, this minor planet has neither been numbered nor named.[1]

References

Шаблон:Reflist

External links

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 2,3 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  3. ↑ 3,0 3,1 3,2 3,3 3,4 3,5 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок staradvertiser.com не указан текст
  5. ↑ 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок Whiteley-2002 не указан текст
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