Gliese 644C

Distance rank: by HYG distance it belongs to the Nº 66 nearest star system to the Sun (stars within 20 ly).

Telescope target: magnitude +16.78 is too faint for the naked eye (limit ≈ +6).

Why it matters

Light-time: the light you see left it about 18.7 years ago.

Sources

1. HYG Database v4.1 (D. Nash, astronexus), CC BY-SA 4.0: stars within 20 ly, derived list
2. HYG Database v4.1 (Nash), CC BY-SA 4.0
3. IAU, The Constellations (88 official names and abbreviations)

13point8 is an independent educational project. Every fact links to its source; send corrections to [email protected]. Privacy