White giant · Taurus

Chamukuy

Also known as: θ² Tauri (θ² Tau), HIP 20894

mag 3.4150 light-years

About

Chamukuy (θ² Tauri) is a white giant of magnitude 3.4 in Taurus, about 150 light-years away.

Chamukuy is in the constellation Taurus.
Best evenings: around mid-January 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 64° 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.

EyesVisible from the suburbs on a clear night, but lost in bright city skies.
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	Chamukuy
Designation	θ² Tauri (θ² Tau)
Hipparcos number	HIP 20894
Type	White giant
Spectral type	A7III
Colour	Yellowish whiteB−V colour index 0.18
Magnitude	3.4The smaller the number, the brighter.
Distance	150 light-yearsThe light you see left it around 1880.
Proper motion	0.11″ per year across the sky
Constellation	Taurus
Right ascension (J2000)	04h 28m 39.7s
Declination (J2000)	+15° 52′ 15″