M-type star · red

17 UMa

17 UMa is a red in the constellation Ursa Major 720 ly from Earth. Its surface is about 3,694 K, about 0.6 times the Sun's surface temperature, and it shines at 328× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 720 years ago.

720 lybrightness mag 5.28K5III

Also catalogued as HR 3660 · HD 79354 · HIP 45455

3,694 K
temperature
5.28
apparent magnitude
328× ☉
luminosity vs Sun
K5III
spectral type
Distance & comparison with our Sun
720 years
at light speed from Earth
0.64×
as hot as the Sun
328×
the Sun's light output
-1.44
absolute magnitude
Explore from here · roam the neighborhood
17 UMaM-type
Sky regionUrsa Majorthis direction
StarHR 369833 ly
StarHR 340585 ly
StarHD 80461150 ly
StarAliothstar
StarDubhestar
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.