Acubens
HR 3572 · HIP 44066 · α Cnc
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.249 mag
- Parallax
- 17.32 mas → about 188.3 light-years away
- Spectral type
- A5m
- Right ascension
- 134.6217°
- Declination
- 11.8577°
- Designation
- HR 3572
- Bayer designation
- α Cnc
- HIP number
- 44066
- IAU name adopted
- 2016-07-20
- Name language
- Arabic
- Name origin (IAU)
- Applied with various spellings since medieval times, from the Arabic word al-zubana, "the claw", used in Ptolemy's Tetrabiblos in describing the stars α and ι Cnc. Otherwise, the same Arabic word was used for the "claws" of Scorpius.
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 188 years to reach Earth — the light you see tonight left around AD 1838 (official distance ÷ speed of light).
- At magnitude 4.2 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 11.9° — 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.