Tianhun
HR 248 · HIP 4147 · 20 Cet
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.76 mag
- Parallax
- 5.56 mas → about 586.6 light-years away
- Spectral type
- M0III
- Right ascension
- 13.2521°
- Declination
- -1.1443°
- Designation
- HR 248
- Bayer designation
- 20 Cet
- HIP number
- 4147
- IAU name adopted
- 2026-10-15
- Name language
- Chinese
- Name origin (IAU)
- Tiān Hùn (天溷), Celestial Pigsty, is a Chinese asterism and at least 2000 years old. It belongs to the Kui mansion, whose determining asterism was also called Shimu (Pig).
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 587 years to reach Earth — the light you see tonight left around AD 1439 (official distance ÷ speed of light).
- At magnitude 4.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -1.1° — 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.