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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:01 
Transit: 12:56 
Sunset: 20:52
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All Constellations » Hercules » 

θ Herculis (theta Herculis)

Above the horizon.  Rise: 16:09 | Tran: 3:01 | Set: 13:48
Alt: 18.51°   Az: 307.18°   Direction: North-West

θ Herculis is a variable bright giant star of spectral class K1 in the constellation of Hercules.

θ Herculis visual magnitude is 3.86. Because of its moderate brightness, θ 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 θ Herculis (theta Herculis) star
DSS2 image of θ Herculis. The red arrow shows the motion of θ Herculis during the next 100000 years (6.67 arcmin in Right Ascension and 10.00 arcmin in declination);

Celestial Coordinates

Apparent

17h 57m 07s
+37° 14’ 54”
07h 13m 24s
01h 10m 31s

J2000

17h 56m 15s
+37° 15’ 02”

Galactic Coordinates

63.26°
26.42°

Finder Chart

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Finder chart for θ Herculis (theta Herculis).

Magnitude, Color, Spectral Class

3.86
Bright giant

-2.70
K1II
4034K

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

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

Distance, Radial Speed, Proper Motion

θ Herculis is distant 669.40 light years from the Sun and it is moving towards the Sun at the speed of 27 kilometers per second.

205.34
669.40
-27 km/s
0.004 arcsec/y
0.006"/y

Alternative Designations

θ Herculis
(theta Herculis)
91 Herculis
SAO66485
SAO66485

Visibility from Your Location

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

Azimuth: 52.8°
Max altitude: 75.8°
Azimuth: 307.2°