Английская Википедия:(85990) 1999 JV6
Шаблон:Use dmy dates Шаблон:Infobox planet
Шаблон:Mp, provisional designation Шаблон:Mp, is a sub-kilometer near-Earth asteroid and a potentially hazardous object of the Apollo group. It was discovered by astronomers of the LINEAR program at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico. Шаблон:Mp is a contact binary object consisting of two distinct lobes, as seen in radar images from various observatories including Arecibo and Goldstone in January 2015.
Close approaches
In January 2015, Шаблон:Mp approached Earth within a distance of Шаблон:Convert.[1] During the encounter, Шаблон:Mp was observed by radar from the Arecibo, Green Bank, and Goldstone observatories.[2] In January 2016, Шаблон:Mp has made another close approach at a distance of Шаблон:Convert, several times closer than the encounter in 2015.[1][2]
The Minor Planet Center has classified Шаблон:Mp as a potentially hazardous asteroid due to its large size and small Earth minimum orbit intersection distance (MOID) of 0.03 AU.[3][1]
Physical characteristics
Шаблон:Mp was discovered in May 1999 by the Lincoln Near-Earth Asteroid Research (LINEAR) program at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico. Most properties of Шаблон:Mp have been determined through photometry, spectroscopy, infrared radiometry, and radar imaging.[2]
Binzel et al. (2001) have found that Шаблон:Mp has a spectral class of an Xk-type asteroid. Thermal infrared observations using the WISE spacecraft by Mainzer et al. (2011) and the Spitzer Space Telescope by Mueller et al. (2011) give a diameter of Шаблон:Cvt. Warner et al. (2014, 2015) suggest that Шаблон:Mp has a highly elongated shape due to its large light curve amplitude of 0.9 magnitudes. Based on Шаблон:Mp's large brightness changes, they measured a rotation period of 6.54 hours. In January 2015, radar imaging by the Arecibo Observatory and the Green Bank Observatory confirmed Шаблон:Mp's elongated shape and provided delay-Doppler images used to obtain a preliminary estimate of a 3D model for its shape. The radar data reveal an apparent concavity and suggest that Шаблон:Mp is a contact binary.[3]
References
External links
- Goldstone Radar Observations Planning: 1999 JV6, 2001 WL15, and Toro, JPL Asteroid Radar Research
- 3D model of the asteroid
- Шаблон:NeoDys
- Шаблон:ESA-SSA
- Шаблон:JPL small body
Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control
- ↑ 1,0 1,1 1,2 Ошибка цитирования Неверный тег
<ref>; для сносокjpldataне указан текст - ↑ 2,0 2,1 2,2 Шаблон:Cite web Шаблон:PD notice
- ↑ 3,0 3,1 Шаблон:Cite journal
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