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Author: WikiMatrix
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English[en]
The loop is not closed but will drift forward or backward slightly each time, so that the point it circles will appear to move smoothly along the larger body's orbit over a long period of time.
Chinese[zh]
迴圈並未閉合,但是每一次都會略為飄向前方或後方,因此在漫長的週期中,它環繞的點會沿著地球軌道平滑的移動。