70 Ophiuchi is a multiple hypergiant star in the constellation of Ophiuchus.
70 Ophiuchi visual magnitude is 4.03. Because of its moderate brightness, 70 Ophiuchi 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 70 Ophiuchi:
Celestial coordinates and finder chart of 70 Ophiuchi
70 Ophiuchi 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 70 Ophiuchi are provided in the following table:
The simplified sky map below shows the position of 70 Ophiuchi in the sky:
Visibility of 70 Ophiuchi from your location
Digitized Sky Survey image of 70 Ophiuchi
The image below is a photograph of 70 Ophiuchi 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 70 Ophiuchi is 0.266 arcsec per year in Right Ascension and -1.093 arcsec per year in Declination and the associated displacement for the next 100 years is represented with the red arrow.
Distance of 70 Ophiuchi from the Sun and relative movement
70 Ophiuchi is distant 16.58 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.
Spectral properties of 70 Ophiuchi
70 Ophiuchi belongs to spectral class K0 and has a luminosity class of V corresponding to a hypergiant star.
The red dot in the diagram below shows where 70 Ophiuchi is situated in the Hertzsprung–Russell diagram.
70 Ophiuchi star system properties
70 Ophiuchi 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 70 Ophiuchi double sysyem: