α1 Canum Venaticorum (alpha1 Canum Venaticorum)

Above the horizon. Rise: 1:18 | Tran: 12:38 | Set: 23:59

Alt: 57.37° Az: 96.97° Direction: East

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.

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);

Celestial Coordinates

Apparent

Right Ascension 12h 57m 10s

Declination +38° 10’ 51”

Hour Angle 21h 08m 19s

Sideral Time 10h 05m 29s

J2000

Right Ascension 12h 56m 00s

Declination +38° 18’ 52”

Galactic Coordinates

Galactic Longitude 118.31°

Galactic Latitude 78.77°

Finder Chart

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

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.6

Class Hypergiant

Absolute magnitude 3.61

Spectral Type F0V

Color Index (B-V) 0.34

Temperature 7217K

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

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

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:

Main star magnitude 5.6

Secondary star magnitude 8.3

Magnitude difference 2.7

Separation 19.4 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 25.03

Distance (light year) 81.60

Radial Speed -3 km/s

Proper Motion RA -0.236 arcsec/y

Proper Motion Dec 0.062"/y

Alternative Designations

Bayer designation α1 Canum Venaticorum
(alpha1 Canum Venaticorum)

Flamsteed designation 12 Canum Venaticorum

Henry Draper Catalogue HD112412

SAO Catalogue SAO63256

Hipparcos Catalogue HIP63121

Durchmusterung Catalogue BD+39 2580

Aitken Double Star Catalogue ADS8706

Visibility from Your Location

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

Azimuth: 51.8° RISE 1:18

Max altitude: 76.7° TRANSIT 12:38

Azimuth: 308.2° SET 23:59

Set Location

Other stars in Canes Venatici