F-type star · yellow-white star
Diadem
Diadem is a yellow-white star in the constellation Coma Berenices 58.1 ly from Earth. Its surface is about 6,600 K, about 1.1 times the Sun's surface temperature, and it shines at 5.18× the Sun's brightness. At magnitude 4.3 it is bright enough to see with the naked eye; the light you see left it 58 years ago.
Also catalogued as Alpha Com · HR 4968 · HD 114378 · HIP 64241 · Gliese Gl 501A
6,600 K
temperature
4.32
apparent magnitude
5.18× ☉
luminosity vs Sun
F5V
spectral type
Distance & comparison with our Sun
58 years
at light speed from Earth
1.14×
as hot as the Sun
5.18×
the Sun's light output
3.06
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.