102 Herculis is a double sub-giant star in the constellation of Hercules.
102 Herculis visual magnitude is 4.36. Because of its moderate brightness, 102 Herculis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about 102 Herculis:
Celestial coordinates and finder chart of 102 Herculis
102 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 102 Herculis are provided in the following table:
The simplified sky map below shows the position of 102 Herculis in the sky:
Visibility of 102 Herculis from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's 102 Herculis rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of 102 Herculis
The image below is a photograph of 102 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 102 Herculis is -0.001 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of 102 Herculis from the Sun and relative movement
102 Herculis is distant 1,523.36 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.
Spectral properties of 102 Herculis
102 Herculis belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where 102 Herculis is situated in the Hertzsprung–Russell diagram.
102 Herculis star system properties
102 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 102 Herculis double sysyem: