3.08
Apparent Mag430
Distance (ly)K3II
Spectral Type4,270
Temperature (K)Albireo is one of the finest double stars in the sky with a striking gold-and-blue pair. It marks the head of Cygnus the Swan.
Stellar Data
Apparent Magnitude3.08
Absolute Magnitude-2.31
Distance430 light-years
Spectral TypeK3II
Temperature4,270 K
Luminosity1,200 L☉
Radius69 R☉
Mass5.2 M☉
Right Ascension19h 30m 43.3s
Declination+27° 57′ 34.8″
ConstellationCygnus
Notable Facts
- Albireo's gold-and-blue color contrast is a favorite for amateur astronomers
- It marks the beak of Cygnus the Swan
- Whether its two components are a true binary remains debated