A-type star · white star

57 UMa

57 UMa is a white star in the constellation Ursa Major 213 ly from Earth. Its surface is about 9,894 K, about 1.7 times the Sun's surface temperature, and it shines at 28.11× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 213 years ago.

213 lybrightness mag 5.30A2V

Also catalogued as HR 4422 · HD 99787 · HIP 56034

9,894 K

temperature

5.30

apparent magnitude

28.11× ☉

luminosity vs Sun

A2V

spectral type

Distance & comparison with our Sun

213 years

at light speed from Earth

1.71×

as hot as the Sun

28.11×

the Sun's light output

1.23

absolute magnitude

Explore from here · roam the neighborhood

57 UMaA-type

Sky regionUrsa Majorthis direction

Nearest stars

Bright stars in Ursa Major

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 5.3To see it no equipment neededLook toward Ursa Major

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.