Английская Википедия:2011 EO40

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Шаблон:Use dmy dates Шаблон:Infobox planet Шаблон:Mp is an asteroid, classified as a near-Earth object and a potentially hazardous asteroid of the Apollo group. It is a possible candidate for the parent body of the Chelyabinsk superbolide.[1][2][3]

Discovery, orbit and physical properties

Шаблон:Mp was discovered by Richard A. Kowalski on 10 March 2011 while observing for the Mount Lemmon Survey.[4][5]

Its orbit is typical of Apollo asteroids and is characterized by significant eccentricity (0.54), low inclination (3.36º), and a semi-major axis of 1.65 AU.[5] Upon discovery, it was classified as an Earth crosser, a near-Earth asteroid (NEA) and a potentially hazardous asteroid (PHA) by the Minor Planet Center. It was listed on the Sentry Risk Table for less than one day.[6] Its orbit is in need of additional observations to determine if it is part of an asteroid family; as of October 2015 the orbit is determined using just twenty observations spanning an observation arc of 34 days.[7] Шаблон:Mp has an absolute magnitude of 21.5,[7] which gives a characteristic diameter of about Шаблон:Convert.[8]

Relationship to the Chelyabinsk superbolide

Recent calculations indicate that this object is a plausible candidate to be the parent body of the Chelyabinsk superbolide, since its orbit is very similar to the computed, pre-impact path of the Chelyabinsk meteoroid.[1][2][3] It has relatively frequent close encounters with Venus, the EarthMoon system, and Mars. It had a close encounter with Earth on 28 January 2011 at Шаблон:Convert,[7] and it will have a nominal Earth approach on 23 September 2025 at about Шаблон:Convert.[7] Asteroid Шаблон:Mp experiences close approaches to the Earth–Moon system following a rather regular pattern, every 17 years approximately due to the combined action of multiple secular resonances.[2]

Visibility

Future opposition windows are: 7 June 2016 at magnitude 24.5, and 28 May 2018 at magnitude 24.6. The best observation window will be on 2–23 September 2025.[7] Depending on the Earth approach distance (0.04–0.12 AU),[7] it should be brighter than magnitude 19.[9]

See also

Notes

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Шаблон:Refend

References

Шаблон:Reflist

External links

Шаблон:Small Solar System bodies Шаблон:2011 in space Шаблон:Authority control

  1. 1,0 1,1 Шаблон:Cite journal
  2. 2,0 2,1 2,2 Шаблон:Cite journal
  3. 3,0 3,1 Шаблон:Cite journal
  4. Discovery MPEC
  5. 5,0 5,1 MPC data on 2011 EO40
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  7. 7,0 7,1 7,2 7,3 7,4 7,5 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
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