K-type star · orange
66 UMa
66 UMa is an orange in the constellation Ursa Major 309 ly from Earth. Its surface is about 4,513 K, about 0.8 times the Sun's surface temperature, and it shines at 36.51× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 309 years ago.
Also catalogued as HR 4566 · HD 103605 · HIP 58181
4,513 K
temperature
5.83
apparent magnitude
36.51× ☉
luminosity vs Sun
K1III
spectral type
Distance & comparison with our Sun
309 years
at light speed from Earth
0.78×
as hot as the Sun
36.51×
the Sun's light output
0.94
absolute magnitude
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VISIBLE TO THE NAKED EYE
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.