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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:30 
Transit: 12:14 
Sunset: 16:58
sunny   (Daytime)  
What's Visible Now • Tonight Timeline
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All Constellations » Hercules » 

ο Herculis (omicron Herculis)

Above the horizon.  Rise: 0:09 | Tran: 9:01 | Set: 17:53
Alt: 10.64°   Az: 303.38°   Direction: West-North-West

ο Herculis is a variable main-sequence star of spectral class B9 in the constellation of Hercules.

ο Herculis visual magnitude is 3.83. Because of its moderate brightness, ο 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 ο Herculis (omicron Herculis) star
DSS2 image of ο Herculis. The red arrow shows the motion of ο Herculis during the next 100000 years (1.67 arcmin in Right Ascension and 15.00 arcmin in declination);

Celestial Coordinates

Apparent

18h 08m 31s
+28° 46’ 02”
07h 22m 18s
01h 30m 50s

J2000

18h 07m 32s
+28° 45’ 44”

Galactic Coordinates

55.19°
21.59°

Finder Chart

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Finder chart for ο Herculis (omicron Herculis).

Magnitude, Color, Spectral Class

3.83
Main-sequence

-1.31
B9V
10516K

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

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

Distance, Radial Speed, Proper Motion

ο Herculis is distant 347.18 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

106.50
347.18
-30 km/s
0.001 arcsec/y
0.009"/y

Alternative Designations

ο Herculis
(omicron Herculis)
103 Herculis
SAO85750
SAO85750

Visibility from Your Location

Today's ο Herculis (omicron Herculis) 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°