in orbit
into orbit

You know the earth is in orbit around the sun.

They would be in orbit for at least a few more days.

They must have already been here in orbit waiting for us.

If we had only put men in orbit, guess what?

We were in orbit all of the time, watching everything.

More than 500 men and women from 38 countries have now been in orbit.

I wanted us ready should someone turn up in orbit.

You might as well have gone in orbit to wait.

They had spent a total of 139 days in orbit.

You would not have to wait that long in orbit, of course.