Astronomy and astrophysics Spherical astronomy and astrometry Concept
Celestial coordinate system
Summary
A celestial coordinate system gives each point of the celestial sphere two angles, a latitude and a longitude. It is fixed by a fundamental great circle and a starting direction on that circle. The usual systems are the horizontal, equatorial, ecliptic and galactic systems, and they differ by rotations of the sphere.
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Further reading
About this page
| Tag | YT0G7RE2GM |
|---|---|
| URI | m2://YT0G7RE2GM |
| Kind | concept |
| Writing | W0 stub |
| MSC | 85A04 |
| Specializes | Spherical coordinates |
| Same as | |
| Changed | 3 November 2026 |
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Special cases
- Ecliptic coordinate system
- Galactic coordinate system
- Horizontal coordinate system
- Equatorial coordinate system
Used by
- Equatorial coordinate system
- Ecliptic coordinate system
- Galactic coordinate system
- Horizontal coordinate system