Gang
HR 580 · HIP 9598 · 50 Cas
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 3.938 mag
- Parallax
- 20.76 mas → about 157.1 light-years away
- Spectral type
- A2V
- Right ascension
- 30.8588°
- Declination
- 72.4213°
- Designation
- HR 580
- Bayer designation
- 50 Cas
- HIP number
- 9598
- IAU name adopted
- 2025-12-25
- Name language
- Chinese
- Name origin (IAU)
- Gàng (“Shaft”) forms part of the ancient Chinese asterism of Huá Gài (Canopy of the Emperor, 華蓋). Allen (1899) mentions the term as a star name in Cam but WGSN places it in a correcter position.
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 157 years to reach Earth — the light you see tonight left around AD 1869 (official distance ÷ speed of light).
- At magnitude 3.9 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 72.4° — from Seoul (37.6° N) it never sets and circles the northern sky all night.
Worked out from this object's official values.