Fomalhaut
HR 8728 · HIP 113368 · α PsA
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 1.16 mag
- Parallax
- 129.81 mas → about 25.1 light-years away
- Spectral type
- A3V
- Right ascension
- 344.4127°
- Declination
- -29.6222°
- Designation
- HR 8728
- Bayer designation
- α PsA
- HIP number
- 113368
- IAU name adopted
- 2015-12-15
- Name language
- Arabic
- Name origin (IAU)
- Applied with various spellings since medieval times, from an abbreviation of its name for the Arabic Almagest period fam al-but al-janubi, "the Mouth of the Southern Fish."
Source:IAU Working Group on Star Names · checked 2026-11-02 ↗ESA Hipparcos Catalogue (ESA Gaia Archive) · checked 2026-11-03 ↗
Related
Constellation
In everyday life
- Light from this object takes about 25 years to reach Earth — the light you see tonight left around AD 2001 (official distance ÷ speed of light).
- At magnitude 1.2 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -29.6° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.