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public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?
All Constellations » Canis Major » 

ξ1 Canis Majoris (xi1 Canis Majoris)

Above the horizon.  Rise: 9:28 | Tran: 13:15 | Set: 17:02
Altitude: 5.4°   Azimuth: 139.4°   Direction: South-East

ξ1 Canis Majoris is a variable and multiple hypergiant star of spectral class B0 in the constellation of Canis Major.

ξ1 Canis Majoris visual magnitude is 4.33. Because of its moderate brightness, ξ1 Canis Majoris 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.

Celestial coordinates and finder chart of ξ1 Canis Majoris

Finder chart ξ1 Canis Majoris (xi1 Canis Majoris) star
Simplified finder chart for ξ1 Canis Majoris (xi1 Canis Majoris).

ξ1 Canis Majoris 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 ξ1 Canis Majoris are provided in the following table:

06h 31m 51s
-23° 25’ 05”
Canis Major
Image of ξ1 Canis Majoris (xi1 Canis Majoris) star
DSS2 image of ξ1 Canis Majoris. The red arrow shows the motion of ξ1 Canis Majoris during the next 10000 years (-1.00 arcmin in Right Ascension and 2.00 arcmin in declination);

Key facts about ξ1 Canis Majoris


and has a luminosity class of IV corresponding to a hypergiant star.


The red dot in the diagram below shows where ξ1 Canis Majoris is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ξ1 Canis Majoris. Attribution: Richard Powell / CC BY-SA

ξ1 Canis Majoris star system properties

ξ1 Canis Majoris 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 ξ1 Canis Majoris double sysyem:

24.6 arcsec

Distance of ξ1 Canis Majoris from the Sun and relative movement

ξ1 Canis Majoris is distant 2,050.31 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

628.93 pc
2,050.31 ly
27 km/s
-0.006 arcsec/year
0.012 arcsec/year

Alternative designations of ξ1 Canis Majoris

ξ1 Canis Majoris
(xi1 Canis Majoris)
4 Canis Majoris

Visibility of ξ1 Canis Majoris from your location

Today's ξ1 Canis Majoris (xi1 Canis Majoris) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.4°
Max altitude: 15.1°
Azimuth: 246.6°