Hadar - β Centauri (beta Centauri)
Hadar, also designated as β Centauri (beta Centauri), is a variable and double giant star in the constellation of Centaurus.
Hadar visual magnitude is 0.61, making it the 11th brightest star in the sky. Thanks to its high brightness, Hadar is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Hadar:
Celestial coordinates and finder chart of Hadar
Hadar is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Hadar are provided in the following table:
The simplified sky map below shows the position of Hadar in the sky:
Visibility of Hadar from your location
Digitized Sky Survey image of Hadar
The image below is a photograph of Hadar 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 Hadar is -0.032 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Hadar from the Sun and relative movement
Hadar is distant 524.96 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.
Spectral properties of Hadar
Hadar belongs to spectral class B1 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where Hadar is situated in the Hertzsprung–Russell diagram.
Hadar star system properties
Hadar is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the Hadar double sysyem: