30 Herculis is a variable giant star in the constellation of Hercules.
30 Herculis visual magnitude is 5.04. Because of its reltive faintness, 30 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 30 Herculis:
Celestial coordinates and finder chart of 30 Herculis
30 Herculis is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 30 Herculis are provided in the following table:
The simplified sky map below shows the position of 30 Herculis in the sky:
Visibility of 30 Herculis from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
30 Herculis is circumpolar and transits at 04:23 UTC (altitude: 80.4°)
Digitized Sky Survey image of 30 Herculis
The image below is a photograph of 30 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 30 Herculis is 0.03 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of 30 Herculis from the Sun and relative movement
30 Herculis is distant 361.02 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.
Spectral properties of 30 Herculis
30 Herculis belongs to spectral class M6 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where 30 Herculis is situated in the Hertzsprung–Russell diagram.