73 Herculis is a variable hypergiant star in the constellation of Hercules.
73 Herculis visual magnitude is 5.74. Because of its reltive faintness, 73 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 73 Herculis:
Celestial coordinates and finder chart of 73 Herculis
73 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 73 Herculis are provided in the following table:
The simplified sky map below shows the position of 73 Herculis in the sky:
Visibility of 73 Herculis from your location
Digitized Sky Survey image of 73 Herculis
The image below is a photograph of 73 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 73 Herculis is -0.046 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of 73 Herculis from the Sun and relative movement
73 Herculis is distant 139.50 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.
Spectral properties of 73 Herculis
73 Herculis belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.
The red dot in the diagram below shows where 73 Herculis is situated in the Hertzsprung–Russell diagram.