Английская Википедия:(300163) 2006 VW139
Шаблон:Short description Шаблон:Use dmy dates
Шаблон:Mp, provisional designations Шаблон:Mp and Шаблон:Mp, as well as periodic cometary number Шаблон:Mp, is a kilometer-sized asteroid from the outer regions of the asteroid belt and the first "binary main-belt comet" ever discovered.
Шаблон:Mp belongs to the exclusive class of main-belt comets, which display properties of both comets and asteroids. The object was discovered by Spacewatch in 2006. Its binary nature was confirmed by the Hubble Space Telescope in September 2016.[1] Both primary and its minor-planet moon are similar in mass and size, making it a true binary system.[1] The components are estimated to measure 1.8 kilometers in diameter, orbiting each other at a wide separation of 104 kilometers every 135 days.[2][3][4]
Discovery
Шаблон:Mp was discovered on 15 November 2006, by the Spacewatch survey at Kitt Peak National Observatory near Tucson, Arizona.[5] The possible cometary activity was seen in November 2011 by Pan-STARRS.[6] Both Spacewatch and Pan-STARRS are asteroid survey projects of NASA's Near Earth Object Observations Program. After the Pan-STARRS observations it was also given a comet designation of Шаблон:Mp.
Orbit and classification
Шаблон:Mp is a non-family asteroid of the main-belt's background population.[7] It is both a binary asteroid and a main-belt comet, also known as "active asteroid". It orbits the Sun in the outer main-belt at a distance of 2.4–3.7 AU once every 5 years and 4 months (1,944 days; semi-major axis of 3.05 AU). Its orbit has an eccentricity of 0.20 and an inclination of 3° with respect to the ecliptic.[8]
The body's observation arc begins on September 2000, with a precovery taken by the Sloan Digital Sky Survey at Apache Point Observatory, New Mexico, more than six years prior to its official discovery observation by Spacewatch at Kitt Peak.[5]
First binary main-belt comet
Шаблон:Mp was first observed by the Hubble Space Telescope (HST) in December 2011.[1] It was imaged by HST in September 2016, just before it made its closest approach to the Sun and confirmed its binary nature with two asteroids orbiting each other, and revealed ongoing cometary activity.[4] This makes the object the first known binary asteroid that is also classified as a main-belt comet.[4] The binary is thought to be the result of fission of the precursor caused by YORP-driven spinup.[1]
Observations of the HST revealed ongoing activity in this binary system. The combined features of this binary asteroid - wide separation, near-equal component size, high eccentricity orbit, and comet-like activity also make it unique among the few known binary asteroids that have a wide separation.[1][4]
Physical characteristics
Diameter albedo and mass
Шаблон:Mp has a derived diameter of Шаблон:Val kilometer.[3] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.057 and calculates a diameter of 3.20 kilometers based on an absolute magnitude of 16.2.[2] The binary system has an estimated mass between Шаблон:Val and Шаблон:Val.[1] A single component has a derived mass of Шаблон:Val.[3]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 12 October 2011 (Шаблон:Small).[9] As of 2020, it has not been named.[5]
Notes
References
External links
- Comet or Asteroid? Hubble Discovers that a Unique Object is a Binary, Hubblesite, September 2017
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (300001)-(305000) – Minor Planet Center
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:2017 in space Шаблон:Authority control
- ↑ 1,0 1,1 1,2 1,3 1,4 1,5 Ошибка цитирования Неверный тег
<ref>
; для сносокAgarwal-2017
не указан текст - ↑ 2,0 2,1 Ошибка цитирования Неверный тег
<ref>
; для сносокlcdb
не указан текст - ↑ 3,0 3,1 3,2 Ошибка цитирования Неверный тег
<ref>
; для сносокjohnstonsarchive
не указан текст - ↑ 4,0 4,1 4,2 4,3 Ошибка цитирования Неверный тег
<ref>
; для сносокNASA-news-hubble
не указан текст - ↑ 5,0 5,1 5,2 Ошибка цитирования Неверный тег
<ref>
; для сносокMPC-object
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокHsieh-2012
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокAstDys-object
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокjpldata
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокMPC-Circulars-Archive
не указан текст
- Страницы с игнорируемыми отображаемыми названиями
- Английская Википедия
- Active asteroids
- Numbered comets
- Discoveries by the Spacewatch project
- Binary asteroids
- Astronomical objects discovered in 2006
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
- Страницы с ошибками в примечаниях