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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:12 
Transit: 13:06 
Sunset: 20:59
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Coma Berenices » 

23 Comae Berenices

Above the horizon.  Rise: 9:25 | Tran: 17:28 | Set: 1:35
Alt: 30.80°   Az: 268.06°   Direction: West

23 Comae Berenices is a double hypergiant star of spectral class A0 in the constellation of Coma Berenices.

23 Comae Berenices visual magnitude is 4.81. Because of its moderate brightness, 23 Comae Berenices is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of 23 Comae Berenices star
DSS2 image of 23 Comae Berenices. The red arrow shows the motion of 23 Comae Berenices during the next 10000 years (-10.83 arcmin in Right Ascension and 3.50 arcmin in declination);

Celestial Coordinates

Apparent

12h 36m 04s
+22° 29’ 38”
04h 33m 11s
17h 09m 15s

J2000

12h 34m 51s
+22° 37’ 45”

Galactic Coordinates

262.15°
84.14°

Finder Chart

Finder chart 23 Comae Berenices star
Simplified finder chart for 23 Comae Berenices.

Magnitude, Color, Spectral Class

4.81
Hypergiant

-0.43
A0IV
10125K

The red dot in the diagram below shows where 23 Comae Berenices is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 23 Comae Berenices. Attribution: Richard Powell / CC BY-SA

Star System Properties

23 Comae Berenices is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 23 Comae Berenices double sysyem:

4.81
7.21
2.4
0.4 arcsec

Distance, Radial Speed, Proper Motion

23 Comae Berenices is distant 364.65 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

111.86
364.65
-16 km/s
-0.065 arcsec/y
0.021"/y

Alternative Designations

23 Comae Berenices
SAO82390
SAO82390

Visibility from Your Location

Today's 23 Comae Berenices rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 67.5°
Max altitude: 61.0°
Azimuth: 292.5°