ι Herculis (iota Herculis)
ι Herculis is a variable and double sub-giant star of spectral class B3 in the constellation of Hercules.
ι Herculis visual magnitude is 3.8. Because of its moderate brightness, ι 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.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where ι Herculis is situated in the Hertzsprung–Russell diagram.
Star System Properties
ι Herculis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the ι Herculis double sysyem:
Distance, Radial Speed, Proper Motion
ι Herculis is distant 495.44 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.
Alternative Designations
Visibility from Your Location
ι Herculis (iota Herculis) is circumpolar and transits at 01:20 UTC (altitude: 84.5°)