Nunki - σ Sagittarii (sigma Sagittarii)
Nunki, also designated as σ Sagittarii (sigma Sagittarii), is a double main-sequence star of spectral class B2 in the constellation of Sagittarius.
Nunki visual magnitude is 2.02, making it the 49th brightest star in the sky. Because of its brightness, Nunki 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
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Nunki is situated in the Hertzsprung–Russell diagram.
Star System Properties
Nunki 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 Nunki double sysyem:
Distance, Radial Speed, Proper Motion
Nunki is distant 224.21 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.
Alternative Designations
Visibility from Your Location
Today's Nunki - σ Sagittarii (sigma Sagittarii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):