M-type star · red

HR 4278

HR 4278 is a red in the constellation Ursa Major 828 ly from Earth. Its surface is about 3,656 K, about 0.6 times the Sun's surface temperature, and it shines at 226× the Sun's brightness. At magnitude 6.0 it is bright enough to see with the naked eye; the light you see left it 828 years ago.

828 lybrightness mag 5.99M2III

Also catalogued as HD 95129 · HIP 53726

3,656 K
temperature
5.99
apparent magnitude
226× ☉
luminosity vs Sun
M2III
spectral type
Distance & comparison with our Sun
828 years
at light speed from Earth
0.63×
as hot as the Sun
226×
the Sun's light output
-1.03
absolute magnitude
Explore from here · roam the neighborhood
HR 4278M-type
Sky regionUrsa Majorthis direction
StarHR 418483 ly
Star32 LMi120 ly
StarHR 4482120 ly
StarAliothstar
StarDubhestar
Nearest stars
Bright stars in Ursa Major
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 6.0To 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.