Estimated to be 43 meters wide, the newly discovered object belongs to the Apollo group of asteroids.

新发现的星体估计宽 43 米，属于阿波罗小行星群。

Then there are Trojan asteroids, a large group of asteroids that share the orbit of planets around the sun.

还有特洛伊小行星，这是一群共享行星围绕太阳运行轨道的小行星。

The scientists discovered that the chemical signature of water on Earth matches the signature of water in an ancient group of asteroids called eucrites.

科学家们发现地球上水的化学特征与一个名为钙长辉长陨石古老小行星群上水的化学特征匹配。

But, these operations also extend as far as the large group of asteroids that share Jupiter's orbital path around the Sun.

但是，这些行动也延伸到共享木星围绕太阳的轨道路径的一大群小行星。