Merga
HR 5533 · HIP 72487 · 38 Boo
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 5.757 mag
- Parallax
- 20.41 mas → about 159.8 light-years away
- Spectral type
- F7IVw
- Right ascension
- 222.3278°
- Declination
- 46.1162°
- Designation
- HR 5533
- Bayer designation
- 38 Boo
- HIP number
- 72487
- IAU name adopted
- 2016-09-12
- Name language
- Latin
- Name origin (IAU)
- A Latin word meaning "reaping hook," used in a Early Modern discussion of the constellation Bootes. According to this discussion, some classical sources mentioned a reaping hook held in Bootes' hand opposite the staff. Subsequently the word was applied as a star name to hBoo.
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 160 years to reach Earth — the light you see tonight left around AD 1866 (official distance ÷ speed of light).
- At magnitude 5.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 46.1° — 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.