Английская Википедия:2011 EO40
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 Earth–Moon 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
- Шаблон:Note label This is assuming an albedo of 0.20–0.04.
References
External links
- Шаблон:Mp data at MPC
- MPEC 2011-E59 : 2011 EO40 (Discovery MPEC)
- Russian meteor may have gangmates in tow, Nature, short article
- Has the Chelyabinsk Meteor Parent Asteroid Been Found?, Bad Astronomy blog entry
- Шаблон:NeoDys
- Шаблон:ESA-SSA
- Шаблон:JPL small body
Шаблон:Small Solar System bodies Шаблон:2011 in space Шаблон:Authority control
- ↑ 1,0 1,1 Шаблон:Cite journal
- ↑ 2,0 2,1 2,2 Шаблон:Cite journal
- ↑ 3,0 3,1 Шаблон:Cite journal
- ↑ Discovery MPEC
- ↑ 5,0 5,1 MPC data on 2011 EO40
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокhohmanntransfer0311не указан текст - ↑ 7,0 7,1 7,2 7,3 7,4 7,5 Ошибка цитирования Неверный тег
<ref>; для сносокjpldataне указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокhне указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокNEODyS2025не указан текст
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