Deimos is the smaller and outermost of Mars' two moons. It is one of the smallest known moons in the solar system.
orbit: 23,459 km from Mars
diameter: 12.6 km (15 x 12.2 x 11)
mass: 1.8e15 kg
In Greek mythology, Deimos is one of the sons of Ares (Mars) and Aphrodite (Venus); deimos is Greek for panic.
Discovered 1877 August 12 by Hall, photographed by Viking 1 in 1977.
Deimos and Phobos are composed of carbon-rich rock like C-type asteroids and ice. Both are heavily cratered.
Deimos and Phobos are probably asteroids perturbed by Jupiter into orbits that allowed them to be captured by Mars.
Deimos 是火星的兩顆衛(wèi)星中離火星較遠(yuǎn)也是較小的一顆,也是太陽系中最小的衛(wèi)星。
公轉(zhuǎn)軌道:距火星23,459 千米
衛(wèi)星直徑:12.6 千米 (15 x 12.2 x 11)
質(zhì)量:1.8e15 千克
在希臘神話中,火衛(wèi)二是阿瑞斯(火星)與阿芙羅狄蒂(金星)的另一個兒子。“deimos”在希臘語中意味著“驚慌”。
火衛(wèi)二在1877年8月10日被Hall發(fā)現(xiàn),在1977年由海盜1號首次拍得其照片。
火衛(wèi)二和火衛(wèi)一是由像C型小行星那般的富含碳的巖石組成的,并且它們都有很深的地坑。
火衛(wèi)二和火衛(wèi)一可能是由于小行星的擾動與木星的作用才使它們圍著火星運(yùn)動的。
orbit: 23,459 km from Mars
diameter: 12.6 km (15 x 12.2 x 11)
mass: 1.8e15 kg
In Greek mythology, Deimos is one of the sons of Ares (Mars) and Aphrodite (Venus); deimos is Greek for panic.
Discovered 1877 August 12 by Hall, photographed by Viking 1 in 1977.
Deimos and Phobos are composed of carbon-rich rock like C-type asteroids and ice. Both are heavily cratered.
Deimos and Phobos are probably asteroids perturbed by Jupiter into orbits that allowed them to be captured by Mars.
Deimos 是火星的兩顆衛(wèi)星中離火星較遠(yuǎn)也是較小的一顆,也是太陽系中最小的衛(wèi)星。
公轉(zhuǎn)軌道:距火星23,459 千米
衛(wèi)星直徑:12.6 千米 (15 x 12.2 x 11)
質(zhì)量:1.8e15 千克
在希臘神話中,火衛(wèi)二是阿瑞斯(火星)與阿芙羅狄蒂(金星)的另一個兒子。“deimos”在希臘語中意味著“驚慌”。
火衛(wèi)二在1877年8月10日被Hall發(fā)現(xiàn),在1977年由海盜1號首次拍得其照片。
火衛(wèi)二和火衛(wèi)一是由像C型小行星那般的富含碳的巖石組成的,并且它們都有很深的地坑。
火衛(wèi)二和火衛(wèi)一可能是由于小行星的擾動與木星的作用才使它們圍著火星運(yùn)動的。