Acrux
* alf Cru · HIP 60718 · α Cru
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 0.76 mag
- Parallax
- 10.13 mas → about 322 light-years away
- Spectral type
- B0.5IV
- Right ascension
- 186.6496°
- Declination
- -63.0991°
- Designation
- * alf Cru
- Bayer designation
- α Cru
- HIP number
- 60718
- IAU name adopted
- 2016-07-20
- Name language
- Contemporary
- Name origin (IAU)
- A modern creation (1938) that is derived from Bayer's nomenclature by combining the "A" from the "alpha" in α Crucis and the Latin constellation name in the nominative case.
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 322 years to reach Earth — the light you see tonight left around AD 1704 (official distance ÷ speed of light).
- At magnitude 0.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -63.1° — it never rises in Seoul (37.6° N); you need to be farther south to see it.