Tianjinnan
HR 8115 · HIP 104732 · ζ Cyg
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 3.21 mag
- Parallax
- 22.79 mas → about 143.1 light-years away
- Spectral type
- G8II SB
- Right ascension
- 318.2341°
- Declination
- 30.2269°
- Designation
- HR 8115
- Bayer designation
- ζ Cyg
- HIP number
- 104732
- IAU name adopted
- 2026-07-16
- Name language
- Chinese
- Name origin (IAU)
- “Southern star of Tianjin”, the Celestial Ferry, is in the Chinese constellation that allows is celebrated to allow the celestial couple of The Girl and The Cowherd to meet once a year.
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 143 years to reach Earth — the light you see tonight left around AD 1883 (official distance ÷ speed of light).
- At magnitude 3.2 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 30.2° — 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.