Caldwell 23
Galaxy in Andromeda · 24.601 million light-years (est. from redshift)
🔭 Explore Caldwell 23 in the 3D map →| Type | Galaxy |
|---|---|
| Constellation | Andromeda |
| Distance | 24.601 million light-years (est. from redshift) |
| Apparent magnitude | 10 |
| Apparent size | 13′ (arc-minutes) |
| Also known as | C23 · NGC 891 |
Caldwell 23 is a galaxy (NGC 891) in the constellation Andromeda — a distant island of stars far beyond the Milky Way. It appears as number 23 in the Caldwell catalogue, Sir Patrick Moore's 1995 list of 109 bright deep-sky objects for amateur astronomers. It spans roughly 13 arc-minutes on the sky. At about magnitude 10, it shows up in a small backyard telescope.
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Related objects
- Andromeda Galaxy — galaxy
- Triangulum Galaxy — galaxy
- Whirlpool Galaxy — galaxy
- Sombrero Galaxy — galaxy
- Messier 110 — galaxy