A-type star · white star

HR 839

HR 839 is a white star in the constellation Cassiopeia 294 ly from Earth. Its surface is about 8,989 K, about 1.6 times the Sun's surface temperature, and it shines at 18.38× the Sun's brightness. At magnitude 6.5 it is within reach of 50 mm binoculars; the light you see left it 294 years ago.

294 lybrightness mag 6.46A1m

Also catalogued as HD 17581 · HIP 13347

8,989 K
temperature
6.46
apparent magnitude
18.38× ☉
luminosity vs Sun
A1m
spectral type
Distance & comparison with our Sun
294 years
at light speed from Earth
1.56×
as hot as the Sun
18.38×
the Sun's light output
1.69
absolute magnitude
Explore from here · roam the neighborhood
HR 839A-type
Sky regionCassiopeiathis direction
StarHR 104332 ly
StarHR 92044 ly
StarHD 1943947 ly
StarCihstar
StarSchedarstar
Nearest stars
Bright stars in Cassiopeia
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.5To see it 50 mm binocularsLook toward Cassiopeia

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.