Genghe
HR 5447 · HIP 71284 · σ Bootis
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.47 mag
- Parallax
- 63.16 mas → about 51.6 light-years away
- Spectral type
- F3Vwvar
- Right ascension
- 218.6701°
- Declination
- 29.7451°
- Designation
- HR 5447
- Bayer designation
- σ Bootis
- HIP number
- 71284
- IAU name adopted
- 2026-04-15
- Name language
- Chinese
- Name origin (IAU)
- Gěnghé (Celestial Lance, 梗河) is a Chinese constellation of 3 stars. WGSN named the second star in the line.
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 52 years to reach Earth — the light you see tonight left around AD 1974 (official distance ÷ speed of light).
- At magnitude 4.5 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 29.7° — 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.