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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
sleep NighttimeWhat's Visible Now?
All Constellations » Coma Berenices » 

4 Comae Berenices

Altitude: 56.5°   Azimuth: 231.1°   Direction: South-West

4 Comae Berenices is a giant star in the constellation of Coma Berenices.

4 Comae Berenices visual magnitude is 5.66. Because of its reltive faintness, 4 Comae Berenices should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of 4 Comae Berenices is -0.038 arcsec per year in Right Ascension and -0.031 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 4 Comae Berenices star
DSS2 image of 4 Comae Berenices. The red arrow shows the motion of 4 Comae Berenices during the next 10000 years (-6.33 arcmin in Right Ascension and -5.17 arcmin in declination);

Key facts about 4 Comae Berenices

5.66
Giant

4 Comae Berenices is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 56.5°
Azimuth: 231.1°
Direction: South-West

Celestial coordinates and finder chart of 4 Comae Berenices

4 Comae Berenices 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 4 Comae Berenices are provided in the following table:

12h 11m 51s
+25° 52’ 13”
218.78°
81.06°
Coma Berenices

The simplified sky map below shows the position of 4 Comae Berenices in the sky:

Finder chart 4 Comae Berenices star
Simplified finder chart for 4 Comae Berenices.

Visibility of 4 Comae Berenices from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 4 Comae Berenices rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 64.1°
Max altitude: 64.4°
Azimuth: 295.9°

Distance of 4 Comae Berenices from the Sun and relative movement

4 Comae Berenices is distant 774.35 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.

237.53 pc
774.35 ly
22 km/s
-0.038 arcsec/year
-0.031 arcsec/year

Spectral properties of 4 Comae Berenices

4 Comae Berenices belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.

-1.22
K4III
3934K

The red dot in the diagram below shows where 4 Comae Berenices is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 4 Comae Berenices. Attribution: Richard Powell / CC BY-SA

Alternative designations of 4 Comae Berenices

4 Comae Berenices
SAO82178
SAO82178