Deneb
HR 7924 · HIP 102098 · α Cyg
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 1.25 mag
- Parallax
- 2.31 mas → about 1,411.9 light-years away
- Spectral type
- A2Ia
- Right ascension
- 310.358°
- Declination
- 45.2803°
- Designation
- HR 7924
- Bayer designation
- α Cyg
- HIP number
- 102098
- IAU name adopted
- 2016-06-30
- Name language
- Arabic
- Name origin (IAU)
- "Tail" in Arabic
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 1,412 years to reach Earth — the light you see tonight left around AD 614 (official distance ÷ speed of light).
- At magnitude 1.3 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 45.3° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.