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1.
A guy that wants to sleep with his female friend.

He "orbits" her (hangs out with in a needy way) in the hopes of getting sex someday.

If the girl is hot, she usually has many orbiters.

Go open that hot chick. Don't worry about the guy, he isn't her boyfriend, he's just one of her orbiters.
by bladelaw January 03, 2006
 
2.
A guy who secretly loves his female 'friend', and may go out of his way to accommodate her (couch-mover). Either the guy was shot-down early on and was placed in the friend-zone, or he never had the balls to ask her out and inadvertently placed himself in the friend-zone.
Peter wasn't actually a real friend, he was just another orbiter of yours. That's why he was being an ass to your new boyfriend.

Peter is such an orbiter. Look, he's moving a his hot friend's couch on his back!
by djsynq September 09, 2009
 
3.
The third wheel that invades time with potential couples. He is hung up on the girl that invites him to hang out only out of pity. While hanging out with the actual guy she is interested in, an orbiter will constantly text her some really lame shit in hopes to get invited to the festivities. Ultimately, he will invite himself over and make things extremely akward among the potential couple.
Girl: Look what my friend text me
Guy: Lemme see
Orbiter's Text Message: are you hungry? im so depressed and hungry...luckily food is the cure to depression! ;)
Guy: WOW.
Girl: haha
Guy: Is he being serious?
Girl: haha, yes he is bringing me food.
Guy: what a fucking clown
by thedude8266 July 01, 2013
 
4.
Ugly or fat girls that hang around an attractive or many attractive girls in order to reap the benefits of having slack jawed guys following them around.
You're at the bar and there's this hot girl, but she has like 3 ugly orbiter girl friends hanging around her.
They're just following her because the guys to go the pretty one and the uggies hope that her table scraps (guys she doesn't want) will pick them up after being rejected.
by ChaseM March 08, 2008
 
5.
The skinnier females that orbit around the fat girl in various settings, such as at a bar or lounge scene, or a nightclub, etc...
Go distract the fat girl by buying her some finger food at the bar, while we pick up the three cute orbiters and meet you in front in 15 minutes.
by LAFF July 23, 2005