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♋ · Cnc

Cancer Constellation

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 abbreviation TarfBrightest star late winter and springTypical season

Star map

The shape of Cancer

J2000
Tarf Asellus Australis Acubens
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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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
δ Cnc 3.94
α Cnc 4.25

How to recognize it

How to find the Cancer constellation

1

Tarf

Start with the brightest star; it is the easiest landmark to confirm on the map and in the real sky.

2

Trace the pattern

Use Tarf, Asellus Australis, Acubens as landmarks and compare their pattern with the J2000 map.

3

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.

NASA HEASARC · Bright Star Catalog · NASA SkyView

Astronomy and astrology

Cancer constellation, zodiac sign and rising sign

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.