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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
north SunriseRise: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Canis Major » 

10 Canis Majoris

Altitude: -24.0°   Azimuth: 110.4°   Direction: East-South-East

10 Canis Majoris is a variable and double giant star in the constellation of Canis Major.

10 Canis Majoris visual magnitude is 5.2. Because of its reltive faintness, 10 Canis Majoris should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 10 Canis Majoris:


10 Canis Majoris is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -24.0°
Azimuth: 110.4°
Direction: East-South-East

Celestial coordinates and finder chart of 10 Canis Majoris

10 Canis Majoris is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 10 Canis Majoris are provided in the following table:

06h 44m 28s
-31° 04’ 14”
Canis Major

The simplified sky map below shows the position of 10 Canis Majoris in the sky:

Finder chart 10 Canis Majoris star
Simplified finder chart for 10 Canis Majoris.

Visibility of 10 Canis Majoris 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 10 Canis Majoris 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: 121.1°
Max altitude: 7.4°
Azimuth: 238.9°

Digitized Sky Survey image of 10 Canis Majoris

The image below is a photograph of 10 Canis Majoris from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 10 Canis Majoris is -0.015 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 10 Canis Majoris star
DSS2 image of 10 Canis Majoris. The red arrow shows the motion of 10 Canis Majoris during the next 10000 years (-2.50 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of 10 Canis Majoris from the Sun and relative movement

10 Canis Majoris is distant 2,608.00 light years from the Sun and it is moving far from the Sun at the speed of 34 kilometers per second.

800.00 pc
2,608.00 ly
34 km/s
-0.015 arcsec/year
0.008 arcsec/year

Spectral properties of 10 Canis Majoris

10 Canis Majoris belongs to spectral class B2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 10 Canis Majoris is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 10 Canis Majoris. Attribution: Richard Powell / CC BY-SA

10 Canis Majoris star system properties

10 Canis Majoris 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 10 Canis Majoris double sysyem:

36.3 arcsec

Alternative designations of 10 Canis Majoris

10 Canis Majoris