Английская Википедия:1994 WR12
Шаблон:Mp is an asteroid and near-Earth object approximately Шаблон:Convert in diameter.[1][2] As a member of the Aten group almost all of its orbit is closer to the Sun than Earth is. On 24 November 1994 it passed about Шаблон:Val from the Moon.[1] First imaged at Kitami Observatory on 26 November 1994,[3] it was discovered two nights later by American astronomer Carolyn S. Shoemaker at Palomar Observatory on 28 November 1994.[4] The asteroid then went unobserved from 1994 until it was recovered by Mauna Kea in March 2016.[3] It was removed from the Sentry Risk Table on 2 April 2016.[5]
| Date | JPL SBDB nominal geocentric distance |
uncertainty region (3-sigma) |
|---|---|---|
| 2021-11-29 | Шаблон:Val | ± 34 km[6] |
| 2046-11-25 | Шаблон:Val | ± 4133 km |
| 2190-11-23 | Шаблон:Val | ± 815 million km[7] |
Description
Шаблон:Mp orbits the Sun at a distance of 0.5–1.1 AU once every 8 months (240 days). Its orbit has an eccentricity of 0.40 and an inclination of 7° with respect to the ecliptic.[1]
It has an Earth minimum orbital intersection distance of Шаблон:Cvt, which translates into 0.7 lunar distances.[1] On 25 November 2046, it will pass Шаблон:Val from Earth with an uncertainty of ±4133 km.[1] While listed on the Sentry Risk Table the range for the 2046 close approach distance varied from Шаблон:Cvt to Шаблон:Cvt from Earth.[8]
While listed on the Sentry Risk Table,[9] virtual clones of the asteroid that fit the uncertainty in the known trajectory showed 116 potential impacts between 2054 and 2109.[2] It had about a cumulative 1 in 9090 chance of impacting the Earth.[2] The formerly poorly known trajectory of this asteroid was further complicated by close approaches to Venus and Mercury.[1] It was recovered by Mauna Kea in March 2016,[3] which extended the observation arc from 34 days to 21 years.
It is estimated that an impact would produce the equivalent of 77 megatons of TNT,[2] roughly 1.5 times that of most powerful nuclear weapon ever detonated (Tsar Bomba).
See also
References
External links
- List Of Aten Minor Planets (by designation), Minor Planet Center
- Шаблон:NeoDys
- Шаблон:ESA-SSA
- Шаблон:JPL small body
Шаблон:2016 in space Шаблон:Planetary defense Шаблон:Small Solar System bodies Шаблон:Authority control
- ↑ 1,0 1,1 1,2 1,3 1,4 1,5 1,6 Ошибка цитирования Неверный тег
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<ref>; для сносокrisk-tableне указан текст
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