Arkab Prior

Arkab Prior (β1 Sagittarii) is a blue-white main-sequence star in the constellation Sagittarius. With an apparent magnitude of 4.01 it is the 519th-brightest star in the night sky, and it is about 261 light-years from Earth.

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

ConstellationSagittarius
Designationβ1 Sagittarii (Beta Sagittarii), HR 7337
Apparent magnitude4.01 (519th brightest)
Spectral typeB9V
Colorblue-white (B−V -0.10)
Distanceabout 261 light-years
Right ascension19 h 22.6 min
Declination−44.46°
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 Arkab Prior

Arkab Prior is in Sagittarius. From 40° N it is highest in the south in August evenings, about 6° above the horizon. From 35° S it reaches about 81° in the south. Nearby bright stars: Kaus Australis (15° away), Peacock (16° away) and Nunki (19° away).

Sagittarius constellation →

Other named stars in Sagittarius

Kaus AustralisNunkiAscellaKaus MediaKaus BorealisAlbaldahAlnaslPolisRukbatArkab PosteriorTerebellumAinalrami

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