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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:16 
Transit: 12:14 
Sunset: 17:12
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What's Visible Now • Tonight Timeline
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All Constellations » Hercules » 

γ Herculis (gamma Herculis)

Below the horizon.  Rise: 23:00 | Tran: 6:44 | Set: 14:25
Alt: -16.30°   Az: 336.15°   Direction: North-North-West

γ Herculis is a variable and multiple giant star of spectral class A9 in the constellation of Hercules.

γ Herculis visual magnitude is 3.75. Because of its moderate brightness, γ Herculis 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 γ Herculis (gamma Herculis) star
DSS2 image of γ Herculis. The red arrow shows the motion of γ Herculis during the next 10000 years (-7.83 arcmin in Right Ascension and 7.17 arcmin in declination);

Celestial Coordinates

Apparent

16h 23m 01s
+19° 05’ 43”
10h 23m 00s
02h 46m 02s

J2000

16h 21m 55s
+19° 09’ 11”

Galactic Coordinates

35.26°
41.3°

Finder Chart

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Finder chart for γ Herculis (gamma Herculis).

Magnitude, Color, Spectral Class

3.75
Giant

-0.14
A9III
7658K

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

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

Star System Properties

γ Herculis 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 γ Herculis double sysyem:

3.75
10.15
6.4
41.6 arcsec

Distance, Radial Speed, Proper Motion

γ Herculis is distant 195.33 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.

59.92
195.33
-35 km/s
-0.047 arcsec/y
0.043"/y

Alternative Designations

γ Herculis
(gamma Herculis)
20 Herculis
SAO102107
SAO102107

Visibility from Your Location

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

Azimuth: 70.9°
Max altitude: 57.6°
Azimuth: 289.1°