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public LocationGreenwich, UK
Sunrise: 5:07 
Transit: 13:06 
Sunset: 21:04
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Hercules » 

30 Herculis

Above the horizon.  Circumpolar today
Alt: 35.21°   Az: 295.09°   Direction: West-North-West

30 Herculis is a variable giant star of spectral class M6 in the constellation of Hercules.

30 Herculis visual magnitude is 5.04. Because of its faintness, 30 Herculis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

30 Herculis is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere.

Image of 30 Herculis star
DSS2 image of 30 Herculis. The red arrow shows the motion of 30 Herculis during the next 10000 years (5.00 arcmin in Right Ascension and -1.50 arcmin in declination);

Celestial Coordinates


16h 29m 26s
+41° 49’ 43”
05h 32m 51s
22h 02m 18s


16h 28m 38s
+41° 52’ 54”

Galactic Coordinates


Finder Chart

Finder chart 30 Herculis star
Simplified finder chart for 30 Herculis.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 30 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 30 Herculis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

30 Herculis is distant 361.02 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

110.74 pc
361.02 ly
3 km/s
0.03 arcsec/y
-0.009 "/y

Alternative Designations

30 Herculis

Visibility from Your Location

30 Herculis is circumpolar and transits at 20:36 UTC (altitude: 80.3°)