Albireo - β1 Cygni (beta1 Cygni)
Albireo, also designated as β1 Cygni (beta1 Cygni), is a variable and multiple bright giant star in the constellation of Cygnus.
Albireo visual magnitude is 3.08. Because of its moderate brightness, Albireo should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about Albireo:
Celestial coordinates and finder chart of Albireo
Albireo is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Albireo are provided in the following table:
The simplified sky map below shows the position of Albireo in the sky:
Visibility of Albireo from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's Albireo - β1 Cygni (beta1 Cygni) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of Albireo
The image below is a photograph of Albireo from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Albireo is 0.002 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of Albireo from the Sun and relative movement
Albireo is distant 385.34 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.
Spectral properties of Albireo
Albireo belongs to spectral class K3 and has a luminosity class of II corresponding to a bright giant star.
The red dot in the diagram below shows where Albireo is situated in the Hertzsprung–Russell diagram.
Albireo star system properties
Albireo is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the Albireo double sysyem: