η Herculis (eta Herculis)

Above the horizon. Circumpolar today

Alt: 41.51° Az: 283.53° Direction: West-North-West

η Herculis is a variable giant star of spectral class G7 in the constellation of Hercules.

η Herculis visual magnitude is 3.53. Because of its moderate brightness, η 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.

DSS2 image of η Herculis. The red arrow shows the motion of η Herculis during the next 10000 years (6.17 arcmin in Right Ascension and -13.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 43m 46s

Declination +38° 52’ 31”

Hour Angle 04h 37m 01s

Sidereal Time 21h 20m 48s

J2000

Right Ascension 16h 42m 53s

Declination +38° 55’ 19”

Galactic Coordinates

Galactic Longitude 62.28°

Galactic Latitude 40.9°

Finder Chart

Loading map...

Finder chart for η Herculis (eta Herculis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.53

Class Giant

Absolute magnitude 0.85

Spectral Type G7III

Color Index (B-V) 0.92

Temperature 4943K

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

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

Distance, Radial Speed, Proper Motion

η Herculis is distant 111.99 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

Distance (parsec) 34.35

Distance (light year) 111.99

Radial Speed 8 km/s

Proper Motion RA 0.037 arcsec/y

Proper Motion Dec -0.083"/y

Alternative Designations

Bayer designation η Herculis
(eta Herculis)

Flamsteed designation 44 Herculis

Henry Draper Catalogue HD150997

SAO Catalogue SAO65504

Hipparcos Catalogue HIP81833

Durchmusterung Catalogue BD+39 3029

FK5 Catalogue 626

General Catalogue of Variable Stars 7934

Visibility from Your Location

η Herculis (eta Herculis) is circumpolar and transits at 21:03 UTC (altitude: 77.4°)

In Evidence

Other stars in Hercules

η Herculis (eta Herculis)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Hercules

η Herculis (eta Herculis)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location