Planes of Reference
Common planes of reference include:
- For a geocentric orbit, the Earth's equatorial plane. In this case, non-inclined orbits are called equatorial.
- For a heliocentric orbit, the ecliptic. In this case, non-inclined orbits are called ecliptic.
- For an orbit outside the Solar System, the plane through the primary perpendicular to a line through the observer and the primary (called the plane of the sky)., chap. 17.
Read more about this topic: Orbital Node
Famous quotes containing the words planes and/or reference:
“After the planes unloaded, we fell down
Buried together, unmarried men and women;”
—Robert Lowell (1917–1977)
“Indiana was really, I suppose, a Democratic State. It has always been put down in the book as a state that might be carried by a close and careful and perfect organization and a great deal of—[from audience: “soap”Ma reference to purchased votes, the word being followed by laughter].
I see reporters here, and therefore I will simply say that everybody showed a great deal of interest in the occasion, and distributed tracts and political documents all through the country.”
—Chester A. Arthur (1829–1886)