Hadar
HR 5267 · HIP 68702 · β Cen
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 0.58 mag
- Parallax
- 8.32 mas → about 392 light-years away
- Spectral type
- B1III
- Right ascension
- 210.9559°
- Declination
- -60.373°
- Designation
- HR 5267
- Bayer designation
- β Cen
- HIP number
- 68702
- IAU name adopted
- 2016-08-21
- Name language
- Arabic
- Name origin (IAU)
- From some pre-Islamic Arabian name hadari (an untranslated proper name), for one of a pair of stars, the other one being al-wazn. Sci-A authors ventured to identify these stars as α/β Cen or α/β Col, but exactly what two stars were originally intended, and the significance of their names, is unknown. "Hadar" was arbitrarily applied to β Cen in recent times.
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 392 years to reach Earth — the light you see tonight left around AD 1634 (official distance ÷ speed of light).
- At magnitude 0.6 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -60.4° — it never rises in Seoul (37.6° N); you need to be farther south to see it.