We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
Help keep this site free and ads-free: donate now!
public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:17
sunny   (Daytime)   What's Visible Now?

51 Geminorum

Below the horizon.  Rise: 7:05 | Tran: 14:28 | Set: 21:51
Altitude: -9.9°   Azimuth: 47.7°   Direction: North-East

51 Geminorum is a variable and multiple giant star of spectral class M4 in the constellation of Gemini.

51 Geminorum visual magnitude is 5. Because of its moderate brightness, 51 Geminorum 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 51 Geminorum

Finder chart 51 Geminorum star
Simplified finder chart for 51 Geminorum.

51 Geminorum 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 51 Geminorum are provided in the following table:

07h 13m 22s
+16° 09’ 32”
Image of 51 Geminorum star
DSS2 image of 51 Geminorum. The red arrow shows the motion of 51 Geminorum during the next 10000 years (2.17 arcmin in Right Ascension and -7.00 arcmin in declination);

Key facts about 51 Geminorum


and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 51 Geminorum is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 51 Geminorum. Attribution: Richard Powell / CC BY-SA

51 Geminorum star system properties

51 Geminorum 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 51 Geminorum double sysyem:

149.2 arcsec

Distance of 51 Geminorum from the Sun and relative movement

51 Geminorum is distant 699.57 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

214.59 pc
699.57 ly
-9 km/s
0.013 arcsec/year
-0.042 arcsec/year

Alternative designations of 51 Geminorum

51 Geminorum

Visibility of 51 Geminorum from your location

Today's 51 Geminorum rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.8°
Max altitude: 54.7°
Azimuth: 286.2°