Английская Википедия:(89830) 2002 CE

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Шаблон:Use dmy dates Шаблон:Infobox planet

(89830) 2002 CE, provisional designation Шаблон:Mp, is a stony asteroid, classified as near-Earth object and potentially hazardous asteroid of the Amor group, approximately 3.1 kilometers in diameter. It was discovered on 1 February 2002, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[1] This asteroid is one of the largest potentially hazardous asteroid known to exist.[2]

Orbit and classification

Шаблон:Mp is a member of the dynamical Amor group, which are Mars-crossing asteroids that approach the orbit of Earth from beyond, but do not cross it.[3][1]

It orbits the Sun at a distance of 1.0–3.1 AU once every 2 years and 12 months (1,094 days; semi-major axis of 2.08 AU). Its orbit has a high eccentricity of 0.51 and an inclination of 44° with respect to the ecliptic.[3]

The body's observation arc begins with a precovery from the Digitized Sky Survey taken at the Siding Spring Observatory, Australia, in May 1982, nearly 20 years prior to its official discovery observation at Socorro.[1]

Close approaches

With an absolute magnitude of 14.9, Шаблон:Mp is one of the brightest and largest known potentially hazardous asteroid (see PHA-list).[2] It has an Earth minimum orbital intersection distance of Шаблон:Convert, which corresponds to 10.8 lunar distances.[3]

Physical characteristics

Шаблон:Mp has been characterized as a common, stony S-type asteroid by astronomers conducting spectroscopic observations using the New Technology Telescope at La Silla, Chile, and the 2.2-meter telescope of the Calar Alto Observatory in Spain.[4]Шаблон:Rp

Rotation period

In October 2004, a rotational lightcurve of Шаблон:Mp was obtained from photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory. Lightcurve analysis gave a rotation period of 2.6149 hours with a low brightness amplitude of 0.09 magnitude (Шаблон:Small). Several longer periods are also possible.Шаблон:Efn

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Шаблон:Mp measures 5.067 kilometers in diameter and its surface has a low albedo of 0.079.[5] Conversely, the Collaborative Asteroid Lightcurve Link assumes a stony standard albedo of 0.20 and calculates a smaller diameter of 3.11 kilometers based on an absolute magnitude of 14.9.[6]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 30 August 2004.[7] As of 2018, it has not been named.[1]

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 Ошибка цитирования Неверный тег <ref>; для сносок MPC-PHA-list не указан текст
  3. ↑ 3,0 3,1 3,2 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Sanchez-2013 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Mainzer-2012 не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Circulars-Archive не указан текст
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