What is a circular motion around a object called when filming? You know that camera technique when the camera operator usually have a steadicam and runs/walks around a person.

I'm trying to learn how to do that with my homemade glidecam but it is so hard. it would be nice to find a tutorial but I don't know what to search for.
That's a kind of tracking shot known as an orbit. Here is a product video for the Digital Juice Orbit Dolly, which is a piece of equipment that can be used to achieve this effect: