Findings:

• A Closed and Common Orbit
• Molniya orbit
• orbit+ (user)
• an orbit steadfast and looping and true
• Sister Orbit (user)
• unstable periodic orbits
• I forget my own orbit
• Orbits
• Nuke the entire site from orbit. It's the only way to be sure.
• From my orbit
• Deep orbit
• Graveyard orbit
• Space: Earth Orbit (category)
• Abort To Orbit
• being in his orbit
• in low orbit over a sea of objects
• sun-synchronous orbit
• highly elliptical orbit
• Pumping
• pumping lemma
• pumping lemma proof that the balanced braces language is not regular
• pumping lemma proof that the "a^n b^n" language is not regular
• Pumping Iron
• Buccal pumping
• pumping length
• retrograde orbit
• Orbit! (user)
• orbit
• low earth orbit
• William Orbit
• geosynchronous orbit
• geostationary orbit
• Clarke orbit
• open orbit
• closed orbit
• -=orbit=- (user)
• Red Star, Winter Orbit
• Lunar Orbit (user)
• Standard orbit
• orbit (user)
• Costs of launching to orbit
• least-energy orbit
• polar orbit
• science orbit
• Headlong into the irresistible orbit
• One and a Half Stages to Orbit
• The Jagged Orbit
• Circular orbits
• orbit cranking
• Fuzzy orbit
• High Earth Orbit
• The Orbit

If you Log in you could create a "orbit pumping" node. If you don't already have an account, you can register here.