Arkab Posterior - β2 Sagittarii (beta2 Sagittarii)
Arkab Posterior, also designated as β2 Sagittarii (beta2 Sagittarii), is a giant star of spectral class F2 in the constellation of Sagittarius.
Arkab Posterior visual magnitude is 4.29. Because of its moderate brightness, Arkab 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
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Arkab Posterior is situated in the Hertzsprung–Russell diagram.
Distance, Radial Speed, Proper Motion
Arkab Posterior is distant 138.61 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.
Alternative Designations
Visibility from Your Location
Arkab Posterior - β2 Sagittarii (beta2 Sagittarii) is currently not visible from Greenwich, UK