Constellation

How to find Cancer

The faintest zodiac constellation — but home to the lovely naked-eye Beehive Cluster.

Share
Hemisphere
Northern sky
Best seen
February–March
Brightest star
Al Tarf
Abbreviation
Cnc

Al Tarf — the crab's modest brightest star (Beta Cancri).

Cancer is the dimmest of the zodiac constellations, a faint upside-down 'Y' tucked between bright Gemini and Leo. Its stars are easy to miss from the suburbs, but it hides a real treasure.

That treasure is the Beehive Cluster (M44), one of the nearest and brightest open star clusters.

The Beehive Cluster

Under a dark sky the Beehive (M44, also called Praesepe) appears as a soft glowing patch to the naked eye — ancient observers used it as a weather gauge, noting it vanished before storms as humidity rose. Binoculars resolve it into a swarm of dozens of stars, which is how it earned its name.

How to find it

  • Find bright Pollux (Gemini) and Regulus (Leo); Cancer lies in the gap between them
  • Look for a faint hazy patch in that gap — the Beehive Cluster
  • A dark, transparent sky helps enormously; Cancer fades fast in light pollution

Deep-sky highlights

  • Beehive Cluster (M44 / Praesepe) — a bright naked-eye open cluster
  • Open cluster M67 — one of the oldest known open clusters

Stella shows exactly when Cancer is highest from your location tonight — and whether the sky is worth it.

Coming to iPhone —Explore Stella