90 Herculis is a variable and double giant star in the constellation of Hercules.
90 Herculis visual magnitude is 5.16. Because of its reltive faintness, 90 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 90 Herculis:
Celestial coordinates and finder chart of 90 Herculis
90 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 90 Herculis are provided in the following table:
The simplified sky map below shows the position of 90 Herculis in the sky:
Visibility of 90 Herculis from your location
90 Herculis is circumpolar and transits at 12:58 UTC (altitude: 78.5°)
Digitized Sky Survey image of 90 Herculis
The image below is a photograph of 90 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 90 Herculis is 0.011 arcsec per year in Right Ascension and 0.053 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of 90 Herculis from the Sun and relative movement
90 Herculis is distant 363.43 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.
Spectral properties of 90 Herculis
90 Herculis belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where 90 Herculis is situated in the Hertzsprung–Russell diagram.
90 Herculis star system properties
90 Herculis is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the 90 Herculis double sysyem: