Over time, its predicted position was off from where it actually was.

随着时间的推移，它的预测位置偏离了实际位置。

He sent a letter with the predicted position to the Berlin Observatory.

他给柏林天文台寄去了一封带有预测位置的信。

Interestingly, over time, Neptune seemed to wander from its predicted position as well.

有趣的是，随着时间的推移，海王星似乎也偏离了它的预测位置。