Английская Википедия:(164121) 2003 YT1

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Шаблон:Short description

Шаблон:Use dmy dates Шаблон:Infobox planet

Шаблон:Mp, provisional designation Шаблон:Mp, is a bright asteroid and synchronous binary system on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately Шаблон:Convert in diameter. It was discovered on 18 December 2003, by astronomers with the Catalina Sky Survey at the Catalina Station near Tucson, Arizona, in the United States.[1] The V-type asteroid has a short rotation period of 2.3 hours.[2] Its 210-meter sized minor-planet moon was discovered at Arecibo Observatory in May 2004.[3][4]

Orbit and classification

Шаблон:Mp is a member of the Earth-crossing group of Apollo asteroids, the largest group of near-Earth objects with approximately 10 thousand known members.[1][5]

It orbits the Sun at a distance of 0.8–1.4 AU once every 1 years and 2 months (427 days; semi-major axis of 1.11 AU). Its orbit has an eccentricity of 0.29 and an inclination of 44° with respect to the ecliptic.[5] The body's observation arc begins with a precovery taken at the Siding Spring Observatory in November 1989, more than 14 years prior to its official discovery observation at Catalina.[1]

Close approaches and Torino rating

The asteroid has an Earth minimum orbital intersection distance of Шаблон:Convert, which corresponds to 1.05 lunar distances and makes it a potentially hazardous asteroid due to its sufficiently large size.[5] On the Torino Scale, this object was rated level 1 on 27 December 2003 with an observation arc of 8.7 days.[6] It was removed from the risk table on 29 December 2003.[7] Over the next ten million years the asteroid has a 6% chance of impacting Earth.[8]

On 30 April 2004 it made a close approach at a nominal distance of Шаблон:Convert, and on 31 October 2016, it passed Earth at Шаблон:Convert. The asteroid's closest encounter with Earth will be on 29 April 2073, when it is projected to pass at Шаблон:Convert only (see table).[5]

Шаблон:Mp has unique orbital characteristics among minor planets. It is the only known binary asteroid to have an Earth MOID within the Moon's Apogee.[9]

Earth Approach on 3 November 2023[5]
Date JPL Horizons
nominal geocentric
distance (AU) 		uncertainty
region
(3-sigma)
2023-Nov-03 12:33 Шаблон:Convert[5] ±Шаблон:Val[10]

Шаблон:Large near earth asteroid flybys 5LD

Meteor stream

On 28 April 2017, a Шаблон:Cvt fragment of Шаблон:Mp is suspected of having impacted Earth creating a fireball over Kyoto, Japan.[8] The fragment would have broken off the parent body within the last ten thousand years.

Physical characteristics

Файл:2003 YT1 may3s Arecibo.gif
Animation of Arecibo radar images showing Шаблон:Mp's rotation and its satellite's orbital motion on 3 May 2004

This object has been characterized as a bright Vestian-like V-type asteroid.[2][11][12]

Rotation period

Several rotational lightcurve of this asteroid have been obtained from photometric observations (Шаблон:Small).[13][3][14][15] Analysis of the best-rated lightcurve gave a short rotation period of 2.343 hours with a brightness amplitude between 0.16 and 0.27 magnitude.[2]

Diameter and albedo

According to radar observations with the Arecibo Observatory and the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, this asteroid measures between 1.0 and 1.717 kilometers in diameter and its surface has an albedo between 0.198 and 0.4861.[3][16][17][18][19]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.5848 and adopts a diameter of 1.0 kilometer based on an absolute magnitude of 16.2.[2]

Satellite

The Arecibo radar observations in May 2004 revealed that Шаблон:Mp is a synchronous binary asteroid.[3] Follow-up observations confirmed a 210-meter sized minor-planet moon orbiting its primary every 30 hours at a distance of 2.7 km.[4][14]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 26 September 2007 (Шаблон:Small).[20] As of 2018, it has not been named.[1]

References

Шаблон:Reflist

External links

Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control

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Разное

  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 Ошибка цитирования Неверный тег <ref>; для сносок Nolan-2004 не указан текст
  4. ↑ 4,0 4,1 Ошибка цитирования Неверный тег <ref>; для сносок johnstonsarchive не указан текст
  5. ↑ 5,0 5,1 5,2 5,3 5,4 5,5 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок hohmanntransfer не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок removed не указан текст
  8. ↑ 8,0 8,1 Ошибка цитирования Неверный тег <ref>; для сносок Sasuga2019 не указан текст
  9. ↑ NASA.gov
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок CA2023 не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Thomas-2014 не указан текст
  12. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Sanchez-2013 не указан текст
  13. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Larson-2004 не указан текст
  14. ↑ 14,0 14,1 Ошибка цитирования Неверный тег <ref>; для сносок Pravec-2006 не указан текст
  15. ↑ Ошибка цитирования Неверный тег <ref>; для сносок geneva-obs не указан текст
  16. ↑ Ошибка цитирования Неверный тег <ref>; для сносок WISE не указан текст
  17. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Delbo-2011 не указан текст
  18. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Mainzer-2012 не указан текст
  19. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Mainzer-2011 не указан текст
  20. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Circulars-Archive не указан текст
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