Azelfafage
HR 8301 · HIP 107136 · π1 Cyg
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.66 mag
- Parallax
- 1.89 mas → about 1,725.7 light-years away
- Spectral type
- B3IV
- Right ascension
- 325.5236°
- Declination
- 51.1896°
- Designation
- HR 8301
- Bayer designation
- π1 Cyg
- HIP number
- 107136
- IAU name adopted
- 2016-09-12
- Name language
- Arabic
- Name origin (IAU)
- From the Arabic constellation name al-sulahfat, "the Tortoise," for Lyra ( corresponding to the Greek image of a tortoise shell for the Lyre's soundboard). Transliterated as Azelfage, a Medieval Latin translator erroneously attributed this constellation name to Cygnus. Then in Early Modern times, the corruption "Azelfafage" was applied as a star name to π1 Cyg.
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 1,726 years to reach Earth — the light you see tonight left around AD 300 (official distance ÷ speed of light).
- At magnitude 4.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 51.2° — 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.