ζ Ophiuchi (zeta Ophiuchi)
ζ Ophiuchi is a variable main-sequence star of spectral class O9 in the constellation of Ophiuchus.
ζ Ophiuchi visual magnitude is 2.56. Because of its brightness, ζ Ophiuchi is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Loading map...
Finder chart for ζ Ophiuchi (zeta Ophiuchi).
Magnitude, Color, Spectral Class

The red dot in the diagram below shows where ζ Ophiuchi is situated in the Hertzsprung–Russell diagram.

Distance, Radial Speed, Proper Motion
ζ Ophiuchi is distant 457.87 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.
Alternative Designations
Visibility from Your Location
Today's ζ Ophiuchi (zeta Ophiuchi) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):