Polaris Australis
HR 7228 · HIP 104382 · σ Oct
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 5.42 mag
- Parallax
- 11.61 mas → about 280.9 light-years away
- Spectral type
- F0III
- Right ascension
- 317.1953°
- Declination
- -88.9565°
- Designation
- HR 7228
- Bayer designation
- σ Oct
- HIP number
- 104382
- IAU name adopted
- 2017-09-05
- Name language
- Latin
- Name origin (IAU)
- the term literally means "South Pole" and was first used for the star in the 18th century.
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 281 years to reach Earth — the light you see tonight left around AD 1745 (official distance ÷ speed of light).
- At magnitude 5.4 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -89° — it never rises in Seoul (37.6° N); you need to be farther south to see it.
Worked out from this object's official values.