Английская Википедия:(55565) 2002 AW197

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Шаблон:Short description Шаблон:Use dmy dates

Шаблон:Infobox planet

Шаблон:Mp is a classical, non-resonant trans-Neptunian object from the Kuiper belt in the outermost region of the Solar System, also known as a cubewano. With a likely diameter of at least Шаблон:Convert, it is approximately tied with Шаблон:Mpl and Шаблон:Mpl (to within measurement uncertainties) as the largest unnamed object in the Solar System. It was discovered at Palomar Observatory in 2002.

Its rotation period is 8.8 hours and it is a moderately red color.[1] Tancredi notes that photometric observations suggest that it is a spheroid with a high albedo and small albedo spots.[2] However, its low albedo suggests it does not have planetary geology, as it should if it were a dwarf planet.

Description

Файл:2002 AW197 orbit 2018.png
Шаблон:Mp's orbit is outside that of Pluto's, with a higher inclination and different orientation

Discovery

Шаблон:Mp was discovered on 10 January 2002, by astronomers at the Palomar Observatory in California.[3] Astronomers involved in the discovery were Michael Brown, Chad Trujillo, Eleanor Helin, Michael Hicks, Kenneth Lawrence and Steven H. Pravdo.[4] It is located near the Kuiper cliff.

Orbit and classification

Шаблон:Mp orbits the Sun at a distance of 40.9–53.2 AU once every 322.6 years (over 117,800 days; semi-major axis of 47 AU). Its orbit has an eccentricity of 0.13 and an inclination of 24° with respect to the ecliptic.[5] The body's observation arc begins with a precovery taken at Haleakala-NEAT/GEODSS Шаблон:Obscode in December 1997, more than 4 years prior to its official discovery observation at Palomar.[3] At 45.4 AU from the Sun,[6] it continues to slowly approach the Sun until its perihelion passage at 41.1 AU in May 2078.[7]

Physical characteristics

Файл:2002AW197-Spitzer.jpg
Шаблон:Mp imaged by Spitzer on 13 April 2004

Combined observations of thermal emissions by the Herschel Space Observatory and Spitzer Space Telescope give a diameter of Шаблон:Val and a geometric albedo of Шаблон:Val.[8]

Surface

ESO analysis of spectra reveals a strong red slope and no presence of water ice[9] (in contrast to Quaoar, also red) suggesting organic material (see comparison of colours and typical composition inferred from spectra of the TNOs).

See also

References

Шаблон:Reflist

External links

Шаблон:Commons category

Шаблон:Trans-Neptunian objects Шаблон:Dwarf planets Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  2. ↑ Tancredi, G., & Favre, S. (2008) Which are the dwarfs in the Solar System?. Depto. Astronomía, Fac. Ciencias, Montevideo, Uruguay; Observatorio Astronómico Los Molinos, MEC, Uruguay. Retrieved 10-08-2011
  3. ↑ 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок MPC-object не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPEC2002-O30 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AstDys не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок perihelion не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Vilenius-2014 не указан текст
  9. ↑ Шаблон:Cite journal
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