from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun astronomy The angle PCR formed by P = the
periapsisof a celestial body's elliptical orbit, C = the center of that elliptical orbit, and R = the corresponding point to that celestial body (the projection of the celestial body along a direction parallel to the minor axis of its orbit onto the auxiliary circle (a circle which shares a diameter with the major axis of the celestial body's orbit)).
Sorry, no etymologies found.
Sorry, no example sentences found.