Definition:Principal Vertical Circle
(Redirected from Definition:Celestial Meridian)
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Definition
The vertical circle on the celestial sphere which passes through the observer's zenith and both the north celestial pole and south celestial pole is called the principal vertical circle.
Also known as
Some sources give this as celestial meridian.
Also see
Sources
- 1976: W.M. Smart: Textbook on Spherical Astronomy (6th ed.) ... (previous) ... (next): Chapter $\text {II}$. The Celestial Sphere: $18$. Altitude and azimuth.
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): celestial meridian
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): celestial meridian
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): meridian: 2.