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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:02 
Transit: 12:56 
Sunset: 20:51
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All Constellations » Gemini » 

σ Geminorum (sigma Geminorum)

Above the horizon.  Rise: 7:58 | Tran: 16:50 | Set: 1:46
Alt: 17.38°   Az: 294.70°   Direction: West-North-West

σ Geminorum is a variable and double giant star of spectral class K1 in the constellation of Gemini.

σ Geminorum visual magnitude is 4.28. Because of its moderate brightness, σ 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.

Image of σ Geminorum (sigma Geminorum) star
DSS2 image of σ Geminorum. The red arrow shows the motion of σ Geminorum during the next 1000 years (1.08 arcmin in Right Ascension and -3.87 arcmin in declination);

Celestial Coordinates

Apparent

07h 44m 53s
+28° 49’ 17”
06h 33m 03s
14h 17m 56s

J2000

07h 43m 18s
+28° 53’ 00”

Galactic Coordinates

191.19°
23.27°

Finder Chart

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Finder chart for σ Geminorum (sigma Geminorum).

Magnitude, Color, Spectral Class

4.28
Giant

1.41
K1III
4472K

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

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

Star System Properties

σ Geminorum 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 σ Geminorum double sysyem:

4.28
10.78
6.5
182.2 arcsec

Distance, Radial Speed, Proper Motion

σ Geminorum is distant 122.19 light years from the Sun and it is moving far from the Sun at the speed of 46 kilometers per second.

37.48
122.19
46 km/s
0.065 arcsec/y
-0.232"/y

Alternative Designations

σ Geminorum
(sigma Geminorum)
75 Geminorum
SAO79638
SAO79638

Visibility from Your Location

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

Azimuth: 61.2°
Max altitude: 67.3°
Azimuth: 298.8°