21 Canum Venaticorum

Above the horizon. Circumpolar today

Alt: 64.95° Az: 281.42° Direction: West-North-West

21 Canum Venaticorum is a variable hypergiant star of spectral class A0 in the constellation of Canes Venatici.

21 Canum Venaticorum visual magnitude is 5.15. Because of its faintness, 21 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.

DSS2 image of 21 Canum Venaticorum. The red arrow shows the motion of 21 Canum Venaticorum during the next 10000 years (-5.50 arcmin in Right Ascension and 2.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 13h 19m 17s

Declination +49° 33’ 09”

Hour Angle 02h 39m 04s

Sideral Time 15h 58m 21s

J2000

Right Ascension 13h 18m 14s

Declination +49° 40’ 54”

Galactic Coordinates

Galactic Longitude 111.85°

Galactic Latitude 66.87°

Finder Chart

Simplified finder chart for 21 Canum Venaticorum.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.15

Class Hypergiant

Absolute magnitude 0.52

Spectral Type A0V

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where 21 Canum Venaticorum is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 21 Canum Venaticorum. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

21 Canum Venaticorum is distant 275.11 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

Distance (parsec) 84.39

Distance (light year) 275.11

Radial Speed -3 km/s

Proper Motion RA -0.033 arcsec/y

Proper Motion Dec 0.015"/y

Alternative Designations

Flamsteed designation 21 Canum Venaticorum

Henry Draper Catalogue HD115735

SAO Catalogue SAO44556

Hipparcos Catalogue HIP64906

Durchmusterung Catalogue BD+50 1994

FK5 Catalogue 3063

General Catalogue of Variable Stars BK CVn

Visibility from Your Location

21 Canum Venaticorum is circumpolar and transits at 13:58 UTC (altitude: 88.1°)

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Canes Venatici