We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
sleep NighttimeWhat's Visible Now?
All Constellations » Hercules » 

37 Herculis

Altitude: -33.6°   Azimuth: 347.4°   Direction: North-North-West

37 Herculis is a multiple main-sequence star in the constellation of Hercules.

37 Herculis visual magnitude is 5.77. Because of its reltive faintness, 37 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 37 Herculis:


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

Altitude: -33.6°
Azimuth: 347.4°
Direction: North-North-West

Celestial coordinates and finder chart of 37 Herculis

37 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 37 Herculis are provided in the following table:

16h 40m 38s
+04° 13’ 10”

The simplified sky map below shows the position of 37 Herculis in the sky:

Finder chart 37 Herculis star
Simplified finder chart for 37 Herculis.

Visibility of 37 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 37 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 37 Herculis

The image below is a photograph of 37 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 37 Herculis is -0.001 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 37 Herculis star
DSS2 image of 37 Herculis. The red arrow shows the motion of 37 Herculis during the next 10000 years (-0.17 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of 37 Herculis from the Sun and relative movement

37 Herculis is distant 302.97 light years from the Sun and it is moving towards the Sun at the speed of 34 kilometers per second.

92.94 pc
302.97 ly
-34 km/s
-0.001 arcsec/year
-0.013 arcsec/year

Spectral properties of 37 Herculis

37 Herculis belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 37 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 37 Herculis. Attribution: Richard Powell / CC BY-SA

37 Herculis star system properties

37 Herculis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 37 Herculis double sysyem:

69.6 arcsec

Alternative designations of 37 Herculis

37 Herculis