K-type star · orange

27 UMa

27 UMa is an orange in the constellation Ursa Major 478 ly from Earth. Its surface is about 4,674 K, about 0.8 times the Sun's surface temperature, and it shines at 163× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 478 years ago.

478 lybrightness mag 5.15K0III

Also catalogued as HR 3839 · HD 83506 · HIP 47654

4,674 K
temperature
5.15
apparent magnitude
163× ☉
luminosity vs Sun
K0III
spectral type
Distance & comparison with our Sun
478 years
at light speed from Earth
0.81×
as hot as the Sun
163×
the Sun's light output
-0.68
absolute magnitude
Explore from here · roam the neighborhood
27 UMaK-type
Sky regionUrsa Majorthis direction
StarHR 383830 ly
StarHR 371943 ly
StarHR 382449 ly
StarAliothstar
StarDubhestar
Nearest stars
Bright stars in Ursa Major
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.2To 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.