In this case, the orbit of the rotating asteroid will very slowly spiral toward the sun.

在这种情况下，旋转小行星的轨道将非常缓慢地向太阳旋转。

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Astronomers have detected an asteroid not far from Earth, moving in the same orbit around the Sun.

天文学家在距离地球不远处发现一颗小行星，它与地球在同一轨道上围绕太阳运行。

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Scientists would like to know if Phobos is a captured asteroid or formed in orbit, and whether it had, or has, water.

科学家们想知道火卫一是被火星捕获的小行星还是在轨道上形成的星体，还想了解火卫一上是否有水或曾经有过水。

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Knowing more about how the Yarkovsky effect changes an asteroid's orbit will help scientists better predict whether RQ36 will come near Earth.

VOA: special.2011.06.22

"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

Essentially, deliver an asteroid into Earth orbit and drop a wire down from it.

FORBES: Is This The Final Technical Piece We Need For The Space Elevator?

On the other hand, a longer wait means a more accurate gauge of the asteroid's orbit, and thus of the need to do anything at all.

ECONOMIST: The American Association for the Advancement of Science

The reaction to this radiation is greater on the afternoon side than on the morning side and there is thus a small force pushing on the afternoon side that gradually distorts the asteroid's orbit.

ECONOMIST: Asteroid impacts