Yellow main-sequence star · Cancer

Tegmine

Also known as: ζ² Cancri (ζ² Cnc), HIP 40167

mag 4.782 light-years

About

Tegmine (ζ² Cancri) is a yellow main-sequence star of magnitude 4.7 in Cancer, about 82 light-years away.

Tegmine is in the constellation Cancer.
Best evenings: around early March it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
Where on Earth: it is seen well, at least 10° up, from north of 62° S.

When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.

EyesNeeds a dark sky away from city lights.
Binoculars (10×50)A sharp point; binoculars bring out its colour and the fainter stars around it.
Telescope (6–8 inch)Still a point of light at any magnification — stars are too far away to show a disc. Low in the sky, bright stars twinkle and flash colours.

Stars look the same in any instrument: brighter and sharper, but never bigger.

Proper name	Tegmine
Designation	ζ² Cancri (ζ² Cnc)
Hipparcos number	HIP 40167
Type	Yellow main-sequence star
Spectral type	G0V
Colour	YellowB−V colour index 0.53
Magnitude	4.7The smaller the number, the brighter.
Distance	82 light-yearsThe light you see left it around 1944.
Proper motion	0.15″ per year across the sky
Constellation	Cancer
Right ascension (J2000)	08h 12m 12.7s
Declination (J2000)	+17° 38′ 52″