Asteroid set for ’close’ 43,300 mile flight past Earth on Friday

时间:2018-02-12 单词数:2470

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An asteroid up to 40m in size and only discovered five days ago, is due to skim past the Earth on Friday.


Asteroid 2018 CB will pass by at just less than one-fifth the distance between the Earth and the Moon.

该小行星名为2018 CB,将以不到地球和月球间距五分之一的距离和地球擦肩而过。

It was first spotted by the Catalina Sky Survey in Tucson, Arizona, a Nasa-funded project to record potentially hazardous asteroids.


However, while the pass is relatively close in astronomical terms, it’s nowhere near enough to be a threat.


The 15-40m space rock is set to make its closest approach to Earth at 22:27 GMT.


"Although 2018 CB is quite small, it might well be larger than the asteroid that entered the atmosphere over Chelyabinsk, Russia, almost exactly five years ago, in 2013," said Paul Chodas, manager of Nasa’s Center for Near-Earth Object Studies.

美国国家航空航天局近地物体研究中心经理保罗·乔达斯表示:“尽管2018 CB体积很小,但它可能比刚好五年前的2013年在俄罗斯车里雅宾斯克上方进入大气层的小行星还要大。”

"Asteroids of this size do not often approach this close to our planet - maybe only once or twice a year."

“这种大小的小行星往往不会靠近我们的星球 - 也许每年只有一两次。”

CB 2018 will buzz us at a distance of 69,700km (43,300 miles), which is roughly twice as far as the belt of satellites which orbit Earth in geostationary orbit.

CB 2018将在69,700公里(4300英里)的距离滑行而过,这大约是在地球静止轨道上绕地球轨道运行的卫星离地球距离的两倍。

Another small asteroid passed within lunar distance this week. Known as 2018 CC, the object made its closest approach to Earth on 6 February at a distance of about 184,000km (114,000 miles).

本周另一个小型小行星在月球距离内经过。被称为2018 CC的该物体于2月6日在距离大约184,000公里(114,000英里)处达到与地球最近距离。