39 Herculis

Above the horizon. Rise: 17:39 | Tran: 2:18 | Set: 10:53

Alt: 60.17° Az: 137.06° Direction: South-East

39 Herculis is a giant star of spectral class F2 in the constellation of Hercules.

39 Herculis visual magnitude is 5.92. Because of its faintness, 39 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 39 Herculis. The red arrow shows the motion of 39 Herculis during the next 10000 years (0.33 arcmin in Right Ascension and -7.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 42m 38s

Declination +26° 52’ 11”

Hour Angle 22h 30m 41s

Sidereal Time 15h 13m 20s

J2000

Right Ascension 16h 41m 36s

Declination +26° 55’ 00”

Galactic Coordinates

Galactic Longitude 46.72°

Galactic Latitude 39.22°

Finder Chart

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Finder chart for 39 Herculis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.92

Class Giant

Absolute magnitude 2.76

Spectral Type F2III

Color Index (B-V) 0.4

Temperature 6880K

The red dot in the diagram below shows where 39 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 39 Herculis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

39 Herculis is distant 139.61 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 42.83

Distance (light year) 139.61

Radial Speed -12 km/s

Proper Motion RA 0.002 arcsec/y

Proper Motion Dec -0.044"/y

Alternative Designations

Flamsteed designation 39 Herculis

Henry Draper Catalogue HD150682

SAO Catalogue SAO84543

Hipparcos Catalogue HIP81729

Durchmusterung Catalogue BD+27 2668

Visibility from Your Location

Today's 39 Herculis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 63.1° RISE 17:39

Max altitude: 65.4° TRANSIT 2:18

Azimuth: 296.9° SET 10:53

Set Location

Other stars in Hercules