1 article for "Circular Orbit"

**Circular Orbit**[Astro*Index]

An orbital path which is circular (its eccentricity is exactly 0); generally treated as a degenerate case of an *elliptical orbit* whose *eccentricity* has decreased to zero. The orbits of Venus (e=0.0068), Earth (e=0.0168), and Neptune (e=0.0086) are nearly circular.

See also:

♦ Conic Section ♦ Orbit ♦ Elliptical Orbit ♦ Eccentricity

Astro*Index Copyright © 1997 Michael Erlewine