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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:17
sunny   (Daytime)   What's Visible Now?

α1 Canum Venaticorum (alpha1 Canum Venaticorum)

Above the horizon.  Rise: 8:33 | Tran: 20:02 | Set: 7:34
Altitude: 2.8°   Azimuth: 339.2°   Direction: North-North-West

α1 Canum Venaticorum is a double hypergiant star of spectral class F0 in the constellation of Canes Venatici.

α1 Canum Venaticorum visual magnitude is 5.6. Because of its faintness, α1 Canum Venaticorum is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of α1 Canum Venaticorum

Finder chart α1 Canum Venaticorum (alpha1 Canum Venaticorum) star
Simplified finder chart for α1 Canum Venaticorum (alpha1 Canum Venaticorum).

α1 Canum Venaticorum 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 α1 Canum Venaticorum are provided in the following table:

12h 56m 00s
+38° 18’ 52”
Canes Venatici
Image of α1 Canum Venaticorum (alpha1 Canum Venaticorum) star
DSS2 image of α1 Canum Venaticorum. The red arrow shows the motion of α1 Canum Venaticorum during the next 1000 years (-3.93 arcmin in Right Ascension and 1.03 arcmin in declination);

Key facts about α1 Canum Venaticorum


and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where α1 Canum Venaticorum is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of α1 Canum Venaticorum. Attribution: Richard Powell / CC BY-SA

α1 Canum Venaticorum star system properties

α1 Canum Venaticorum is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the α1 Canum Venaticorum double sysyem:

19.4 arcsec

Distance of α1 Canum Venaticorum from the Sun and relative movement

α1 Canum Venaticorum is distant 81.60 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

25.03 pc
81.60 ly
-3 km/s
-0.236 arcsec/year
0.062 arcsec/year

Alternative designations of α1 Canum Venaticorum

α1 Canum Venaticorum
(alpha1 Canum Venaticorum)
12 Canum Venaticorum

Visibility of α1 Canum Venaticorum from your location

Today's α1 Canum Venaticorum (alpha1 Canum Venaticorum) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 51.7°
Max altitude: 76.8°
Azimuth: 308.3°