Symbols:T/Hour Angle
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Hour Angle
- $t$
Used to denote the hour angle of a point on the celestial sphere.
Let $P$ be a point on the celestial sphere.
The hour angle of $P$ is the angular distance measured westwards along the celestial equator from the vernal equinox.
That is, it is the angular distance measured westwards along the celestial equator between the observer's meridian and the hour circle of $P$.
The $\LaTeX$ code for \(t\) is t
.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): equatorial coordinate system
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): hour angle (HA)
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): equatorial coordinate system
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): hour angle (HA)