Astronomy View all facts Glossary Help |
abstraction > mathematical concept > geometrical object > conic section > ellipse > circle > great circle > hour circle |
hour circle comparison table |
Subject | is a kind of | has definition |
---|---|---|
great circle | circle | A circle on the surface sphere whose diameter equal to the diameter of the sphere. |
hour circle | great circle | A great circle passing through the celestial poles - i.e., perpendicular to the celestial equator. |
Next great circle: meridian Up: great circle