Alnilam
HR 1903 · HIP 26311 · ε Ori
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 1.69 mag
- Spectral type
- B0Ia
- Right ascension
- 84.0534°
- Declination
- -1.2019°
- Designation
- HR 1903
- Bayer designation
- ε Ori
- HIP number
- 26311
- IAU name adopted
- 2016-07-20
- Name language
- Arabic
- Name origin (IAU)
- Applied in recent times from the pre-Islamic Arabian asterism name al-nizam, "the String of Pearls," for δ, ε, and ζ Ori.
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
- At magnitude 1.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -1.2° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.
- Its IAU name «Alnilam» comes from Arabic (IAU Working Group on Star Names).
Worked out from this object's official values.