Taiyangshou
HR 4518 · HIP 57399 · χ UMa
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 3.72 mag
- Parallax
- 17.76 mas → about 183.6 light-years away
- Spectral type
- K0III
- Right ascension
- 176.5126°
- Declination
- 47.7794°
- Designation
- HR 4518
- Bayer designation
- χ UMa
- HIP number
- 57399
- IAU name adopted
- 2017-06-30
- Name language
- Chinese
- Name origin (IAU)
- traditional Chinese single star asterism: Taiyangshou means "The Guardian of the Great Yang" and is the general in charge of the yang valve, symbolising Chief Minister. Xu, Pankenier and Jiang (2000) and Sun Shuwei (Stellarium) evaluating the medieval Song map, both identify chi UMa but Sun and Kistemaker (1997) studying the Han dynasty identify psi UMa.
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 184 years to reach Earth — the light you see tonight left around AD 1842 (official distance ÷ speed of light).
- At magnitude 3.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 47.8° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.
Worked out from this object's official values.