Yed Posterior - ε Ophiuchi (epsilon Ophiuchi)
Yed Posterior, also designated as ε Ophiuchi (epsilon Ophiuchi), is a double giant star of spectral class G9 in the constellation of Ophiuchus.
Yed Posterior visual magnitude is 3.24. Because of its moderate brightness, Yed Posterior is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Simplified finder chart for Yed Posterior - ε Ophiuchi (epsilon Ophiuchi).
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Yed Posterior is situated in the Hertzsprung–Russell diagram.
Star System Properties
Yed Posterior 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 Yed Posterior double sysyem:
Distance, Radial Speed, Proper Motion
Yed Posterior is distant 107.45 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.
Alternative Designations
Visibility from Your Location
Today's Yed Posterior - ε Ophiuchi (epsilon Ophiuchi) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):