Tianji
HR 6212 · HIP 81693 · ζ Her
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 2.8 mag
- Parallax
- 93.32 mas → about 35 light-years away
- Spectral type
- F9IV
- Right ascension
- 250.3215°
- Declination
- 31.6027°
- Designation
- HR 6212
- Bayer designation
- ζ Her
- HIP number
- 81693
- IAU name adopted
- 2026-05-14
- Name language
- Chinese
- Name origin (IAU)
- Celestial Discipline, 天紀, is an ancient Chinese asterism of nine stars first recorded in the Western Han Shishi xingjing (Master Shi’s Star Canon, 石氏星經).
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 35 years to reach Earth — the light you see tonight left around AD 1991 (official distance ÷ speed of light).
- At magnitude 2.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 31.6° — 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.