Zibal
HR 984 · HIP 15197 · ζ Eri
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.8 mag
- Parallax
- 29.72 mas → about 109.7 light-years away
- Spectral type
- A5m
- Right ascension
- 48.9584°
- Declination
- -8.8197°
- Designation
- HR 984
- Bayer designation
- ζ Eri
- HIP number
- 15197
- IAU name adopted
- 2016-09-12
- Name language
- Arabic
- Name origin (IAU)
- Applied in recent times from a misreading of the pre-Islamic Arabian name al-ri'al, "the Young of the Ostriches," for the numerous dim stars running between α Eri and α PsA (or, according to another tradition, those within the triangle formed by α Phe/α PsA/β Cet).
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 110 years to reach Earth — the light you see tonight left around AD 1916 (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 -8.8° — 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.