Aljanah
HR 7949 · HIP 102488 · ε Cyg
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 2.48 mag
- Parallax
- 44.86 mas → about 72.7 light-years away
- Spectral type
- K0III
- Right ascension
- 311.5528°
- Declination
- 33.9703°
- Designation
- HR 7949
- Bayer designation
- ε Cyg
- HIP number
- 102488
- IAU name adopted
- 2016-06-30
- Name language
- Arabic
- Name origin (IAU)
- The star used to be commonly named Gienah (cf. Kunitzsch and Smart 2006, Allen 1899) which derives from Arabic al-Janāḥ, The Wing, based on Almagest translations. WGSN adopted the original Arabic word instead of the corrupted one.
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 73 years to reach Earth — the light you see tonight left around AD 1953 (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 34° — 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.