Английская Википедия:2011 CQ1
Шаблон:Use dmy dates Шаблон:Infobox planet Шаблон:Mp is a meteoroid discovered on 4 February 2011 by Richard A. Kowalski, at the Catalina Sky Survey.[1] On the same day the meteoroid passed within 0.85 Earth radii (Шаблон:Convert) of Earth's surface, and was perturbed from the Apollo class to the Aten class of near-Earth objects.[2] With a relative velocity of only 9.7 km/s,[3] had the asteroid passed less than 0.5 Earth radii from Earth's surface, it would have fallen as a brilliant fireball. The meteoroid is between Шаблон:Convert and Шаблон:Convert wide.[2] The meteoroid was removed from the Sentry Risk Table on 5 February 2011.[4]
Parameter | Epoch | aphelion (Q) |
perihelion (q) |
Semi-major axis (a) |
eccentricity (e) |
Period (p) |
inclination (i) |
Longitude ascending node (Ω) |
Mean anomaly (M) |
Argument of perihelion (ω) |
---|---|---|---|---|---|---|---|---|---|---|
Units | AU | (days) | (°) | |||||||
Pre-flyby | 2011-Jan-26 | 1.347 | 0.9096 | 1.128 | 0.1940 | 437.9 | 1.073° | 135.4° | 310.9° | 58.59° |
Post-flyby | 2011-Feb-08 | 1.009 | 0.6624 | 0.8360 | 0.2076 | 279.2 | 5.296° | 315.4° | 220.6° | 335.1° |
It was not until 2020 QG on 16 August 2020 that a non-impacting closer approach to Earth was observed.
See also
Шаблон:Closest non-impacting asteroids to Earth
References
External links
- Tiny Asteroid Zips Close By Earth space.com 6 February 2011
- Asteroid makes sharpest turn yet seen in solar system New Scientist 9 February 2011
- Asteroid's Record-Breaking Brush with Earth Changed It Forever Space.com 23 February 2011
- Шаблон:NeoDys
- Шаблон:ESA-SSA
- Шаблон:JPL small body
Шаблон:Small Solar System bodies Шаблон:2011 in space Шаблон:Authority control
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