θ Coronae Borealis (theta Coronae Borealis)
θ Coronae Borealis is a variable and double main-sequence star in the constellation of Corona Borealis.
θ Coronae Borealis visual magnitude is 4.14. Because of its moderate brightness, θ Coronae Borealis 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 θ Coronae Borealis:
Celestial coordinates and finder chart of θ Coronae Borealis
θ Coronae Borealis is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ Coronae Borealis are provided in the following table:
The simplified sky map below shows the position of θ Coronae Borealis in the sky:
Visibility of θ Coronae Borealis from your location
Digitized Sky Survey image of θ Coronae Borealis
The image below is a photograph of θ Coronae Borealis 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 θ Coronae Borealis is -0.019 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of θ Coronae Borealis from the Sun and relative movement
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.
Spectral properties of θ Coronae Borealis
θ Coronae Borealis belongs to spectral class B6 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where θ Coronae Borealis is situated in the Hertzsprung–Russell diagram.
θ Coronae Borealis 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: