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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:21 
Transit: 12:14 
Sunset: 17:07
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All Constellations » Hercules » 

109 Herculis

Below the horizon.  Rise: 1:00 | Tran: 8:58 | Set: 16:55
Alt: -14.95°   Az: 17.81°   Direction: North-North-East

109 Herculis is a variable and double giant star of spectral class K2 in the constellation of Hercules.

109 Herculis visual magnitude is 3.84. Because of its moderate brightness, 109 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 109 Herculis star
DSS2 image of 109 Herculis. The red arrow shows the motion of 109 Herculis during the next 1000 years (3.27 arcmin in Right Ascension and -4.03 arcmin in declination);

Celestial Coordinates

Apparent

18h 24m 45s
+21° 47’ 04”
13h 14m 12s
07h 38m 58s

J2000

18h 23m 41s
+21° 46’ 10”

Galactic Coordinates

49.77°
15.6°

Finder Chart

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Finder chart for 109 Herculis.

Magnitude, Color, Spectral Class

3.84
Giant

0.86
K2III
4348K

The red dot in the diagram below shows where 109 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 109 Herculis. Attribution: Richard Powell / CC BY-SA

Star System Properties

109 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 109 Herculis double sysyem:

3.84
10.34
6.5
221.8 arcsec

Distance, Radial Speed, Proper Motion

109 Herculis is distant 128.35 light years from the Sun and it is moving towards the Sun at the speed of 58 kilometers per second.

39.37
128.35
-58 km/s
0.196 arcsec/y
-0.242"/y

Alternative Designations

109 Herculis
SAO86003
SAO86003

Visibility from Your Location

Today's 109 Herculis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 68.2°
Max altitude: 60.3°
Azimuth: 291.8°