Over the next few days, the object was observed to be in a cometary orbit.

Here's how I handled the way in which cometary orbits were finally worked out.

The choice of a cometary orbit was not a frivolous one.

One of the safest places for long-term storage is on cometary orbits.

"The hulk swings in a deep cometary orbit."

He also devised the first satisfactory method of calculating cometary orbits.

They were injecting themselves into a long cometary orbit.

It dates from the day this ship first broke free of the L5 position and went into cometary orbit.

"We'll park her in a cometary orbit, not likely to be detected, and repair at leisure-Hoy, there's an answer to our call."

They could not ex amine every one of the countless millions of objects in a cometary orbit.