θ Coronae Borealis (theta Coronae Borealis)

θ Coronae Borealis is a variable and double main-sequence star of spectral class B6 in the constellation of Corona Borealis.

θ Coronae Borealis visual magnitude is 4.14. Because of its moderate brightness, θ Coronae Borealis 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

Magnitude, Color, Spectral Class

The red dot in the diagram below shows where θ Coronae Borealis is situated in the Hertzsprung–Russell diagram.

Star System Properties

θ Coronae Borealis 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 θ Coronae Borealis double sysyem:

Distance, Radial Speed, Proper Motion

θ Coronae Borealis is distant 310.77 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

Alternative Designations

Visibility from Your Location

Today's θ Coronae Borealis (theta Coronae Borealis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):