Azelfafage ( from Arabic السلحفاة, DMG as- sulaḥfāh, turtle ') is the proper name of the star π1 Cygni ( Pi1 Cygni ). Azelfafage has an apparent magnitude of 4.67 mag and belongs to the spectral class B3IV. The distance is about 1,680 light-years.
Coordinates ( equinox 2000.0 )
- Right Ascension: 21 hours 42 minutes 5.7 seconds
- Declination: 51 ° 11'23 .0 "
- Individual star fifth size and darker
- Swan ( constellation )