Boötes
Arcturus lights up the spring sky
Best on March–May evenings · northern sky.
Boötes is a large kite-shaped constellation in the northern sky, anchored by Arcturus — one of the brightest stars visible from Earth. It sits above Virgo and just east of the dim stars of Coma Berenices, and its distinctive outline is easy to pick out once you know where to look. Spring evenings are its prime time, when it climbs high in the east and south.
How to find it
On spring evenings in the northern hemisphere, find the Big Dipper and follow the curve of its handle away from the bowl — 'arc to Arcturus' as observers have said for generations. That brilliant golden-orange beacon is Arcturus itself, and the rest of Boötes fans out above it in a narrow kite or ice-cream-cone shape, with Muphrid sitting close beside Arcturus and Seginus and Nekkar marking the top.
Brightest stars
Arcturus (α Boo) dominates at magnitude -0.04, making it the brightest star in the northern celestial hemisphere and impossible to miss. Muphrid (η Boo) at magnitude 2.68 and Izar (ε Boo) at 2.7 are the next brightest, with Izar a celebrated tight double star for telescope users.
Worth seeing
Arcturus itself is the main event — at magnitude -0.04 it blazes with a warm golden-orange glow that stands out the moment it clears the horizon, and tracing the full kite shape of Boötes around it on a clear spring night is a genuinely satisfying star-pattern exercise.
Frequently asked
When is Boötes visible?
Boötes is best seen on spring evenings, roughly March through May, when it climbs high in the northern sky. It's accessible from the entire northern hemisphere and from much of the southern hemisphere as well.
What are the brightest stars in Boötes?
Arcturus leads by a wide margin at magnitude -0.04, one of the brightest stars in the whole night sky. Muphrid (2.68) and Izar (2.7) follow, with Seginus (3.03) and Nekkar (3.5) completing the kite's outline.
Which hemisphere is Boötes best seen from?
Boötes sits in the northern sky and is best placed for northern hemisphere observers, but its southerly stars are reachable from tropical and even mid-southern latitudes during the spring months.
Nearby constellations
Serpens · Hercules · Virgo · Draco · Libra · Ursa Major · Ursa Minor · Lyra