A-type star · white star

Alphecca

Alphecca is a white star in the constellation Corona Borealis 75.0 ly from Earth. Its surface is about 9,743 K, about 1.7 times the Sun's surface temperature, and it shines at 59.70× the Sun's brightness. At magnitude 2.2 it is bright enough to see with the naked eye; the light you see left it 75 years ago.

75.0 lybrightness mag 2.22A0V

Also catalogued as Alpha CrB · HR 5793 · HD 139006 · HIP 76267

9,743 K
temperature
2.22
apparent magnitude
59.70× ☉
luminosity vs Sun
A0V
spectral type
Distance & comparison with our Sun
75 years
at light speed from Earth
1.69×
as hot as the Sun
59.70×
the Sun's light output
0.41
absolute magnitude
Explore from here · roam the neighborhood
AlpheccaA-type
Sky regionCorona Borealisthis direction
Star45 Boo14 ly
StarSigma CrB15 ly
StarEta CrB15 ly
StarNusakanstar
StarGamma CrBstar
Nearest stars
Bright stars in Corona Borealis
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 2.2To see it no equipment neededLook toward Corona Borealis

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.