From Parallel Waves.

Orbit Circulate [C4]:

The right-most Leader of each Wave does a 'big' Zoom away from the Center of the set to end in the position diagonally behind their starting position (Trapezoid Zoom) as the others Trade Circulate. Ends in opposite-handed Parallel Waves.

Left Orbit Circulate [C4]:

The left-most Leader of each Wave Trapezoid Zoom as the others Trade Circulate. Note: Left Orbit Circulate is not the Mirror version of Orbit Circulate. The Trailers pass Right shoulders on both Orbit Circulate and Left Orbit Circulate. This is important on 1/2 Left Orbit Circulate.

Twin Orbit Circulate [C4]:

Leaders Trapezoid Zoom (passing right shoulders as they pass) as Trailers Trade Circulate. Ends in opposite-handed Parallel Waves. This call can be fractionalized into halves.

before Orbit Circulate   after

before Twin Orbit Circulate   half-way   after

• We once saw Orbit Circulate generalized by a well-known Challenge caller. From any Parallel Lines: The right-most Lead dancer does a Trapezoid Zoom as the others Crossover Circulate. We like this definition since it allows Orbit Circulate to be done from many more starting formations.
• The 'orbiters' work away from the Center of the Set, going around the outside for their Trapezoid Zoom.

Orbit-Board anything [C4]:

Leaders (who must be in Waves) Orbit Circulate as the others do the anything call working in a distorted 1 x 4.

Orbit-Box anything [C4]:

Leaders (who must be in Waves) Orbit Circulate as the others do the anything call working in a distorted 2 x 2.

Twin-Orbit-Board anything [C4]:

Leaders (who must be in Waves) Twin Orbit Circulate as the others do the anything call working in a distorted 1 x 4.

Twin-Orbit-Box anything [C4]:

Leaders (who must be in Waves) Twin Orbit Circulate as the others do the anything call working in a distorted 2 x 2.

See also Trapezoid CONCEPT [C3B].