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public LocationGreenwich, UK
Sunrise: 5:12 
Transit: 13:06 
Sunset: 20:59
wb_twilight   (Civil Twilight)   What's Visible Now?
All Constellations » Cancer » 

Asellus Borealis - γ Cancri (gamma Cancri)

Above the horizon.  Rise: 5:42 | Tran: 13:37 | Set: 21:32
Alt: 4.61°   Az: 299.07°   Direction: West-North-West

Asellus Borealis, also designated as γ Cancri (gamma Cancri), is a multiple sub-giant star of spectral class A1 in the constellation of Cancer.

Asellus Borealis visual magnitude is 4.66. Because of its moderate brightness, Asellus Borealis 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.

Image of Asellus Borealis - γ Cancri (gamma Cancri) star
DSS2 image of Asellus Borealis. The red arrow shows the motion of Asellus Borealis during the next 1000 years (-1.77 arcmin in Right Ascension and -0.65 arcmin in declination);

Celestial Coordinates


08h 44m 42s
+21° 22’ 44”
07h 22m 43s
16h 07m 25s


08h 43m 17s
+21° 28’ 06”

Galactic Coordinates


Finder Chart

Finder chart Asellus Borealis - γ Cancri (gamma Cancri) star
Simplified finder chart for Asellus Borealis - γ Cancri (gamma Cancri).

Magnitude, Color, Spectral Class



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

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

Star System Properties

Asellus Borealis 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 Asellus Borealis double sysyem:

106.3 arcsec

Distance, Radial Speed, Proper Motion

Asellus Borealis is distant 158.41 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

29 km/s
-0.106 arcsec/y

Alternative Designations

Asellus Borealis
γ Cancri
(gamma Cancri)

Visibility from Your Location

Today's Asellus Borealis - γ Cancri (gamma Cancri) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 68.6°
Max altitude: 59.9°
Azimuth: 291.4°