Nunki

Nunki (σ Sagittarii) is a blue-white main-sequence star in the constellation Sagittarius. With an apparent magnitude of 2.02 it is the 50th-brightest star in the night sky, and it is about 228 light-years from Earth.

Finder chart showing where Nunki is in the constellation Sagittarius
Nunki (circled) in Sagittarius, with the surrounding constellations and bright stars.
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Facts

ConstellationSagittarius
Designationσ Sagittarii (Sigma Sagittarii), HR 7121
Apparent magnitude2.02 (50th brightest)
Spectral typeB2.5V
Colorblue-white (B−V -0.22)
Distanceabout 228 light-years
Right ascension18 h 55.3 min
Declination−26.30°
Best monthAugust (at about 9 pm)

Sources: star positions, magnitudes and colors from the Yale Bright Star Catalogue; constellation boundaries and star names from the IAU; areas and distances from Wikidata; stick figures by M. van der Sluys. How the maps are made.

How to find Nunki

Nunki is in Sagittarius. From 40° N it is highest in the south in August evenings, about 24° above the horizon. From 35° S it reaches about 81° in the north. Nearby bright stars: Kaus Australis (11° away), Shaula (20° away) and Sargas (23° away).

Sagittarius constellation →

Other named stars in Sagittarius

Kaus AustralisAscellaKaus MediaKaus BorealisAlbaldahAlnaslPolisRukbatArkab PriorArkab PosteriorTerebellumAinalrami

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