[新闻] 美国天文学家首次发现完全运行在地球轨道内的小行星。

An Interior Asteroid
February 14, 2003 | Astronomers with the Lincoln Near Earth Asteroid Research (LINEAR) project have observed the first object in the solar system (Venus and Mercury excluded) having an orbit entirely within that of Earth — albeit barely. The minor planet dubbed 2003 CP20 has a 235-day orbit that stretches out to 0.980 astronomical unit from the Sun. At our own closest approach to the Sun, we only get within 0.983 a.u. The new asteroid is estimated to be only 2 kilometers across. And though it poses no risk to Earth (with a minimum possible distance of 28 million kilometers), the object can pass within 0.05 astronomical unit (7.5 million kilometers) of Venus. More information will be known as astronomers refine the asteroid's orbit.

还望老谢同志能把它翻译成中文吧

太阳系真的不只那几个大的行星.
希望早些时候让这类运行在地球轨道内外的小行星真相大白.
这也是业余天文爱好者可以涉足的领域.

这颗小行星的公转周期是235天,轨道半径0.980au

岂不是很近?有危险吗?能看到吗?