K-type star · orange

42 UMa

42 UMa is an orange in the constellation Ursa Major 272 ly from Earth. Its surface is about 4,389 K, about 0.8 times the Sun's surface temperature, and it shines at 35.97× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 272 years ago.

272 lybrightness mag 5.57K2III

Also catalogued as HR 4236 · HD 93875 · HIP 53064

4,389 K
temperature
5.57
apparent magnitude
35.97× ☉
luminosity vs Sun
K2III
spectral type
Distance & comparison with our Sun
272 years
at light speed from Earth
0.76×
as hot as the Sun
35.97×
the Sun's light output
0.96
absolute magnitude
Explore from here · roam the neighborhood
42 UMaK-type
Sky regionUrsa Majorthis direction
StarHR 438823 ly
StarHR 428628 ly
StarHR 439132 ly
StarAliothstar
StarDubhestar
Nearest stars
Bright stars in Ursa Major
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.6To 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.