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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sleep NighttimeWhat's Visible Now?
All Constellations » Hercules » 

36 Herculis

Altitude: -29.8°   Azimuth: 328.8°   Direction: North-North-West

36 Herculis is a multiple sub-giant star in the constellation of Hercules.

36 Herculis visual magnitude is 6.93. Because of its reltive faintness, 36 Herculis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 36 Herculis:


36 Herculis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -29.8°
Azimuth: 328.8°
Direction: North-North-West

Celestial coordinates and finder chart of 36 Herculis

36 Herculis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 36 Herculis are provided in the following table:

16h 40m 35s
+04° 12’ 25”

The simplified sky map below shows the position of 36 Herculis in the sky:

Finder chart 36 Herculis star
Simplified finder chart for 36 Herculis.

Visibility of 36 Herculis from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 36 Herculis rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.8°
Max altitude: 42.7°
Azimuth: 274.2°

Digitized Sky Survey image of 36 Herculis

The image below is a photograph of 36 Herculis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 36 Herculis is -0.002 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 36 Herculis star
DSS2 image of 36 Herculis. The red arrow shows the motion of 36 Herculis during the next 10000 years (-0.33 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of 36 Herculis from the Sun and relative movement

36 Herculis is distant 303.82 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

93.20 pc
303.82 ly
-28 km/s
-0.002 arcsec/year
-0.011 arcsec/year

Spectral properties of 36 Herculis

36 Herculis belongs to spectral class A3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where 36 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 36 Herculis. Attribution: Richard Powell / CC BY-SA

36 Herculis star system properties

36 Herculis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 36 Herculis double sysyem:

69.6 arcsec

Alternative designations of 36 Herculis

36 Herculis