Watch an asteroid the size of the Washington Monument zoom past Earth live on Sept. 18 (video)

9月18日现场观看华盛顿纪念碑大小的小行星掠过地球。

A potentially hazardous asteroid spanning the length of the Washington Monument will make a safe, close approach to Earth on Sept. 18 and you can watch the flyby live online courtesy of the Virtual Telescope Project.

一颗直径横跨华盛顿纪念碑，具有潜在危险的小行星将于9月18日安全地近距离掠过地球，您可以通过在线天文台——虚拟望远镜项目进行观看。

2025 FA22's next flyby of Earth will occur at 3:42 a.m. EDT (0742 GMT) on Sept. 18, when the asteroid will pass 523,206 miles (842018 kilometers) from our planet — the equivalent to around 2.2 lunar distances — posing zero risk to us, or the moon.

2025 FA22下一次飞越地球预计将发生于美国东部时间9月18日凌晨3:42（格林威治标准时间07：42），届时这颗小行星将在距离地球523,206英里（842018公里）的地方经过——相当于2.2个月距——对我们及月球构成零风险。

Stargazers can tune in to the Virtual Telescope Project's YouTube stream beginning at 11 p.m. EDT on Sept. 17 (3:00 GMT Sept. 18) to see live views from the organization's robotic telescopes located in Italy as the asteroid approaches its minimum distance to Earth.

观星者可以于美国东部时间9月17日晚上11点（格林威治时间9月18日3:00）开始收看虚拟望远镜项目在油管频道上的直播。直播中可以观看到该组织位于意大利的机械望远镜在小行星位于接近地球最小距离时的实时视图。

The 427-951-foot-wide (130-290 meters-meter-wide (427-951 ft) asteroid 2025 FA22 was discovered in March earlier this year by the Pan-STARRS wide-field imaging facility. The wandering solar system body was later classified as a Potentially Hazardous Asteroid (PHA) owing to its size/brightness and orbit, which give it the potential to one day make a threateningly close approach to Earth.

该427-951英尺宽（130米✖️290米）的小行星2025 FA22是今年3月初由Pan-STARRS广域成像设备发现的。由于其大小/亮度和轨道，这个分散的太阳系天体后来被归类为具有潜在危险的小行星（PHA），说明它有可能有一天接近地球并且造成威胁。

"While, we repeat, this is a safe approach, it is still remarkable: a similar close encounter, involving an object of that size coming that close, happens one time every ten years on average, accordingly to JPL Center for NEO Studies," wrote Virtual Telescope Institute founder Gianluca Masi in a blog post announcing the livestream.

“尽管我们一直在重申，此次小行星接近地球是安全的，但仍然值得注意的是，根据喷气推进实验室近地天体研究中心的说法，类似的此等规模和近距离接触的小行星事件，平均每十年发生一次，”虚拟望远镜研究会创始人吉安卢卡·马西在发表直播的博客文章中写道。

Following the close pass, 2025 FA22 will continue its 668-day looping path through the inner solar system that takes it well beyond the orbit of Mars.

在近距离掠过地球之后，2025 FA22将继续其668天的环形路径穿过内太阳系然后超出火星轨道。

NASA estimates that an asteroid the size of 2025 FA22 strikes our planet just once every 20,000 years and creates an impact crater measuring up to 1.3 miles (2.1 km) in diameter.

美国宇航局估计，一颗2025 FA22规模的小行星每20,000年才撞击地球一次，并产生直径长达1.3英里（2.1公里）的撞击坑。