Izar
HR 5506 · HIP 72105 · ε Boo
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 2.45 mag
- Parallax
- 16.1 mas → about 202.6 light-years away
- Spectral type
- A0
- Right ascension
- 221.2467°
- Declination
- 27.0742°
- Designation
- HR 5506
- Bayer designation
- ε Boo
- HIP number
- 72105
- IAU name adopted
- 2016-08-21
- Name language
- Arabic
- Name origin (IAU)
- Applied in recent times from the Arabic word izwar, "girdle" or "loin cloth", being a later version of the original term al-mi)zar used in the Arabic Almagest in describing this star.
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 203 years to reach Earth — the light you see tonight left around AD 1823 (official distance ÷ speed of light).
- At magnitude 2.5 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 27.1° — 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.