Centaurus
Home of our nearest stellar neighbor
Best on March–May evenings · far-southern sky.
Centaurus is one of the largest and most brilliant constellations in the sky, sprawling across the far-southern heavens with a pair of stars that outshine almost everything else in the night sky. It's famous above all for hosting Rigil Kentaurus, the closest star system to our own Sun, and its rich star fields reward anyone lucky enough to observe from southern latitudes.
How to find it
Best seen on spring evenings from the southern hemisphere, when Centaurus rides high in the southern sky. From south of the equator, look for two exceptionally bright stars low to due south — Rigil Kentaurus and Hadar burn side by side like twin headlights, making them almost impossible to miss. They also serve as famous pointers toward the Southern Cross, which sits just to their west.
Brightest stars
Rigil Kentaurus blazes at magnitude -0.01, making it the third-brightest star in the entire sky and our nearest stellar neighbor at just over four light-years away. Hadar follows closely at magnitude 0.61, and together the two form one of the sky's most striking pairs; Menkent rounds out the constellation at magnitude 2.06.
Worth seeing
The pairing of Rigil Kentaurus and Hadar is the real prize — two of the brightest stars in the sky, sitting close enough together to frame perfectly in a single glance, and both pointing the eye straight toward the Southern Cross.
Frequently asked
When is Centaurus visible?
Spring evenings, roughly March through May, when Centaurus climbs high in the far-southern sky. It's a southern-hemisphere showpiece and barely clears the horizon from mid-northern latitudes.
What are the brightest stars in Centaurus?
Rigil Kentaurus leads at magnitude -0.01 — the third-brightest star in the sky — followed by Hadar at 0.61 and Menkent at 2.06. Rigil Kentaurus is also the closest star system to the Sun.
Which hemisphere is Centaurus best seen from?
The southern hemisphere, where it rises high on spring evenings. From northern mid-latitudes it stays very low on the horizon or doesn't rise at all, so it's genuinely a southern sky treasure.
Nearby constellations
Crux · Triangulum Australe · Corvus · Libra · Carina · Scorpius · Virgo · Hydra