White subgiant · Ursa Major

Tania Borealis

Also known as: λ Ursae Majoris (λ UMa), HIP 50372

mag 3.5140 light-years

About

Tania Borealis (λ Ursae Majoris) is a white subgiant of magnitude 3.5 in Ursa Major, about 140 light-years away.

Tania Borealis is in the constellation Ursa Major.
Best evenings: around mid-April 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 37° 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	Tania Borealis
Designation	λ Ursae Majoris (λ UMa)
Hipparcos number	HIP 50372
Type	White subgiant
Spectral type	A2IV
Colour	WhiteB−V colour index 0.03
Magnitude	3.5The smaller the number, the brighter.
Distance	140 light-yearsThe light you see left it around 1890.
Proper motion	0.18″ per year across the sky
Constellation	Ursa Major
Right ascension (J2000)	10h 17m 05.8s
Declination (J2000)	+42° 54′ 52″