B-type star · blue-white star

HR 561

HR 561 is a blue-white star in the constellation Cassiopeia 730 ly from Earth. Its surface is about 10,681 K, about 1.9 times the Sun's surface temperature, and it shines at 170× the Sun's brightness. At magnitude 6.0 it is within reach of 50 mm binoculars; the light you see left it 730 years ago.

730 lybrightness mag 6.02B5III

Also catalogued as HD 11857 · HIP 9220

10,681 K
temperature
6.02
apparent magnitude
170× ☉
luminosity vs Sun
B5III
spectral type
Distance & comparison with our Sun
730 years
at light speed from Earth
1.85×
as hot as the Sun
170×
the Sun's light output
-0.73
absolute magnitude
Explore from here · roam the neighborhood
HR 561B-type
Sky regionCassiopeiathis direction
Star55 Cas67 ly
StarOmega Cas92 ly
Star4 Per92 ly
StarCihstar
StarSchedarstar
Nearest stars
Bright stars in Cassiopeia
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.0To 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.