If the object is moving, then your eyes must move too.

She was only a body, an object moving to his music.

But the object didn't move when his hand hit it.

To us it seems as if the object is moving by itself.

The object then moved to a point higher in the sky.

He was the only object moving on the wide common.

Just before dark, the object moved across the river and, apparently, is still there.

Or would they treat both cases as if the object itself moved?

Far off toward the west he 46 could see several objects moving along the shoulder of hill.

It's as if a very large object has moved across the sky, but only we've seen it.