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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: 6:42  
clear_day Transit: 12:10  
SunsetSet: 17:40
sunny DaytimeWhat's Visible Now?
All Constellations » Coma Berenices » 

39 Comae Berenices

Altitude: -14.3°   Azimuth: 336.6°   Direction: North-North-West

39 Comae Berenices is a double main-sequence star in the constellation of Coma Berenices.

39 Comae Berenices visual magnitude is 5.99. Because of its reltive faintness, 39 Comae Berenices should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of 39 Comae Berenices is -0.069 arcsec per year in Right Ascension and -0.046 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 39 Comae Berenices star
DSS2 image of 39 Comae Berenices. The red arrow shows the motion of 39 Comae Berenices during the next 10000 years (-11.50 arcmin in Right Ascension and -7.67 arcmin in declination);

Key facts about 39 Comae Berenices


39 Comae Berenices is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -14.3°
Azimuth: 336.6°
Direction: North-North-West

Celestial coordinates and finder chart of 39 Comae Berenices

39 Comae Berenices is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 39 Comae Berenices are provided in the following table:

13h 06m 21s
+21° 09’ 11”
Coma Berenices

The simplified sky map below shows the position of 39 Comae Berenices in the sky:

Finder chart 39 Comae Berenices star
Simplified finder chart for 39 Comae Berenices.

Visibility of 39 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 39 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: 68.8°
Max altitude: 59.7°
Azimuth: 291.2°

Distance of 39 Comae Berenices from the Sun and relative movement

39 Comae Berenices is distant 162.76 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

49.93 pc
162.76 ly
1 km/s
-0.069 arcsec/year
-0.046 arcsec/year

Spectral properties of 39 Comae Berenices

39 Comae Berenices belongs to spectral class F4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 39 Comae Berenices is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 39 Comae Berenices. Attribution: Richard Powell / CC BY-SA

39 Comae Berenices star system properties

39 Comae Berenices is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 39 Comae Berenices double sysyem:

1.2 arcsec

Alternative designations of 39 Comae Berenices

39 Comae Berenices