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public LocationGreenwich, UK
Sunrise: 5:00 
Transit: 13:04 
Sunset: 21:07
wb_twilight   (Civil Twilight)   What's Visible Now?
All Constellations » Gemini » 

Alhena - γ Geminorum (gamma Geminorum)

Below the horizon.  Rise: 4:39 | Tran: 12:03 | Set: 19:28
Alt: -16.16°   Az: 326.65°   Direction: North-North-West

Alhena, also designated as γ Geminorum (gamma Geminorum), is a multiple hypergiant star of spectral class A0 in the constellation of Gemini.

Alhena visual magnitude is 1.93, making it the 42th brightest star in the sky. Because of its brightness, Alhena is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Alhena is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year.

Image of Alhena - γ Geminorum (gamma Geminorum) star
DSS2 image of Alhena. The red arrow shows the motion of Alhena during the next 10000 years (7.00 arcmin in Right Ascension and -7.00 arcmin in declination);

Celestial Coordinates


06h 39m 07s
+16° 22’ 34”
09h 46m 25s
16h 25m 33s


06h 37m 42s
+16° 23’ 57”

Galactic Coordinates


Finder Chart

Finder chart Alhena - γ Geminorum (gamma Geminorum) star
Simplified finder chart for Alhena - γ Geminorum (gamma Geminorum).

Magnitude, Color, Spectral Class



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

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

Star System Properties

Alhena 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 Alhena double sysyem:

143.5 arcsec

Distance, Radial Speed, Proper Motion

Alhena is distant 104.76 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

32.13 pc
104.76 ly
-13 km/s
0.042 arcsec/y
-0.042 "/y

Alternative Designations

γ Geminorum
(gamma Geminorum)
24 Geminorum

Visibility from Your Location

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

Azimuth: 73.6°
Max altitude: 54.9°
Azimuth: 286.4°