A-type star · white star

51 UMa

51 UMa is a white star in the constellation Ursa Major 257 ly from Earth. Its surface is about 8,444 K, about 1.5 times the Sun's surface temperature, and it shines at 21.36× the Sun's brightness. At magnitude 6.0 it is within reach of 50 mm binoculars; the light you see left it 257 years ago.

257 lybrightness mag 6.01A3III-IV

Also catalogued as HR 4309 · HD 95934 · HIP 54136

8,444 K
temperature
6.01
apparent magnitude
21.36× ☉
luminosity vs Sun
A3III-IV
spectral type
Distance & comparison with our Sun
257 years
at light speed from Earth
1.46×
as hot as the Sun
21.36×
the Sun's light output
1.53
absolute magnitude
Explore from here · roam the neighborhood
51 UMaA-type
Sky regionUrsa Majorthis direction
StarOmega UMa26 ly
Star46 UMa30 ly
StarHR 425639 ly
StarAliothstar
StarDubhestar
Nearest stars
Bright stars in Ursa Major
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.0To see it 50 mm binocularsLook 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.