B-type star · blue-white star

HR 8542

HR 8542 is a blue-white star in the constellation Aquarius 393 ly from Earth. Its surface is about 10,395 K, about 1.8 times the Sun's surface temperature, and it shines at 38.62× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 393 years ago.

393 lybrightness mag 6.29A0V

Also catalogued as HD 212643 · HIP 110746

10,395 K
temperature
6.29
apparent magnitude
38.62× ☉
luminosity vs Sun
A0V
spectral type
Distance & comparison with our Sun
393 years
at light speed from Earth
1.80×
as hot as the Sun
38.62×
the Sun's light output
0.88
absolute magnitude
Explore from here · roam the neighborhood
HR 8542B-type
Sky regionAquariusthis direction
StarZeta PsA43 ly
StarHR 861945 ly
StarHR 861447 ly
StarSadalsuudstar
StarSadalmelikstar
Nearest stars
Bright stars in Aquarius
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.3To see it 50 mm binocularsLook toward Aquarius

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.