Cancer is fainter than its neighboring constellations. Its best-known treasure is the open cluster M44, the Beehive Cluster, visible to the naked eye under sufficiently dark skies.
CncIAU abbreviationTarfBrightest starlate winter and springTypical season
Star map
The shape of Cancer
J2000
Relative positions are derived from the selected stars' J2000 equatorial coordinates. The lines are a recognition aid and are not official IAU boundaries.
Cancer in your sky
Where to look from your location
Choose a city or use your device location. DailyZodiac calculates the constellation's altitude and direction and finds when it will be highest during civil night.
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Observation
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Principal stars
Stars of the Cancer constellation
Click a star on the map or in the table: it will be highlighted and DailyZodiac will load a NASA SkyView astronomical field centered on its J2000 coordinates.
Star
Designation
Magnitude
In your sky
β Cnc
3.53
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δ Cnc
3.94
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α Cnc
4.25
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NASA SkyView is unavailable right now; the star data remains available.
NASA SkyView · Selected star
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Designation
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Magnitude
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J2000 coordinates
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The image is an astronomical cutout generated by NASA Goddard's official SkyView service using the Digitized Sky Survey; it is not a DailyZodiac illustration.
Start with the brightest star; it is the easiest landmark to confirm on the map and in the real sky.
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Trace the pattern
Use Tarf, Asellus Australis, Acubens as landmarks and compare their pattern with the J2000 map.
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Check today's sky
The typical observing season is late winter and spring, but direction and altitude change with time and location, so use the calculator above.
Astronomical data
Where the coordinates and images come from
The map uses a curated subset of bright stars with J2000 equatorial coordinates derived from the Bright Star Catalog; local sky calculations use Astronomy Engine. Click-to-view images are generated by NASA Goddard SkyView.
The constellation is a real astronomical region of the sky. The zodiac sign and rising sign belong to astrology. DailyZodiac links all three pages while keeping the concepts distinct.
Cancer constellation questions
What is the brightest star in Cancer?
Tarf.
When can I see the Cancer constellation?
The typical season is late winter and spring, but actual visibility depends on date, time, latitude, weather and light pollution.
Are the constellation, zodiac sign and rising sign the same thing?
No. The constellation is astronomical; the zodiac sign and rising sign are distinct astrological concepts.