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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:25 
Transit: 12:14 
Sunset: 17:03
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All Constellations » Gemini » 

81 Geminorum

Below the horizon.  Rise: 14:49 | Tran: 22:26 | Set: 6:07
Alt: -18.42°   Az: 17.45°   Direction: North-North-East

81 Geminorum is a giant star of spectral class K4 in the constellation of Gemini.

81 Geminorum visual magnitude is 4.88. Because of its moderate brightness, 81 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 81 Geminorum star
DSS2 image of 81 Geminorum. The red arrow shows the motion of 81 Geminorum during the next 10000 years (-12.67 arcmin in Right Ascension and -9.67 arcmin in declination);

Celestial Coordinates

Apparent

07h 47m 34s
+18° 26’ 49”
13h 09m 49s
20h 57m 24s

J2000

07h 46m 07s
+18° 30’ 36”

Galactic Coordinates

201.86°
20.14°

Finder Chart

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Finder chart for 81 Geminorum.

Magnitude, Color, Spectral Class

4.88
Giant

-0.22
K4III
3870K

The red dot in the diagram below shows where 81 Geminorum is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 81 Geminorum. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

81 Geminorum is distant 341.36 light years from the Sun and it is moving far from the Sun at the speed of 81 kilometers per second.

104.71
341.36
81 km/s
-0.076 arcsec/y
-0.058"/y

Alternative Designations

81 Geminorum
SAO97221
SAO97221

Visibility from Your Location

Today's 81 Geminorum rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 71.6°
Max altitude: 57.0°
Azimuth: 288.4°