37 Herculis

Above the horizon. Rise: 19:19 | Tran: 1:42 | Set: 8:01

Alt: 37.06° Az: 216.66° Direction: South-West

37 Herculis is a multiple main-sequence star of spectral class A1 in the constellation of Hercules.

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

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);

Celestial Coordinates

Apparent

Right Ascension 16h 41m 54s

Declination +04° 10’ 19”

Hour Angle 01h 54m 09s

Sidereal Time 18h 36m 03s

J2000

Right Ascension 16h 40m 38s

Declination +04° 13’ 10”

Galactic Coordinates

Galactic Longitude 20.82°

Galactic Latitude 30.87°

Finder Chart

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Finder chart for 37 Herculis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.77

Class Main-sequence

Absolute magnitude 0.93

Spectral Type A1V

Color Index (B-V) -0.02

Temperature 10382K

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

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

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:

Main star magnitude 5.77

Secondary star magnitude 6.97

Magnitude difference 1.2

Separation 69.6 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 92.94

Distance (light year) 302.97

Radial Speed -34 km/s

Proper Motion RA -0.001 arcsec/y

Proper Motion Dec -0.013"/y

Alternative Designations

Flamsteed designation 37 Herculis

Henry Draper Catalogue HD150378

SAO Catalogue SAO121776

Hipparcos Catalogue HIP81641

Durchmusterung Catalogue BD+04 3235

Aitken Double Star Catalogue ADS10149

Visibility from Your Location

Today's 37 Herculis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.8° RISE 19:19

Max altitude: 42.7° TRANSIT 1:42

Azimuth: 274.2° SET 8:01

Set Location

Other stars in Hercules