Albireo
Constellation: Cyg
Object Type: Multiple Star
RA: 19h 30m 43s
Dec: +27° 57' 28"
Magnitude: 3.0
Recommended minimum aperture: 50mm
Charts for 50mm Binocular (5° aperture circle). Click on a chart to print it.
Location:
Albireo (βCyg) is the star at the head of Cygnus, the Swan.
What You Should See:
10×50 binoculars show both members of this superb double star, which are separated by 34 arcsec. The 3rd magnitude primary is a deep orange (spectral type K) and the fainter (5th magnitude) secondary is a bright sapphire-blue (spectral type B). The star is a true binary, with an orbital period of 7270 years.
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