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public LocationGreenwich, UK
Sunrise: 5:00 
Transit: 13:04 
Sunset: 21:07
sunny   (Daytime)   What's Visible Now?
All Constellations » Canis Major » 


Below the horizon.  Rise: 9:27 | Tran: 12:46 | Set: 16:06
Alt: -38.86°   Az: 274.34°   Direction: West

HR2800 is a variable and double main-sequence star of spectral class B2 in the constellation of Canis Major.

HR2800 visual magnitude is 6.01. Because of its faintness, HR2800 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

HR2800 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere.

Image of HR2800 star
DSS2 image of HR2800. The red arrow shows the motion of HR2800 during the next 10000 years (1.67 arcmin in Right Ascension and 3.17 arcmin in declination);

Celestial Coordinates


07h 21m 54s
-27° 00’ 40”
07h 57m 25s
15h 19m 20s


07h 20m 54s
-26° 57’ 48”

Galactic Coordinates


Finder Chart

Finder chart HR2800 star
Simplified finder chart for HR2800.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where HR2800 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2800. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR2800 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 HR2800 double sysyem:

8.2 arcsec

Distance, Radial Speed, Proper Motion

HR2800 is distant 1,801.10 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

552.49 pc
1,801.10 ly
18 km/s
0.01 arcsec/y
0.019 "/y

Alternative Designations


Visibility from Your Location

Today's HR2800 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 117.0°
Max altitude: 11.5°
Azimuth: 243.0°