B-type star · blue-white star

HR 5661

HR 5661 is a blue-white star in the constellation Circinus 1,681 ly from Earth. Its surface is about 10,897 K, about 1.9 times the Sun's surface temperature, and it shines at 1,171× the Sun's brightness. At magnitude 5.7 it is bright enough to see with the naked eye; the light you see left it 1,681 years ago.

1,681 lybrightness mag 5.74B0.5V

Also catalogued as HD 135160 · HIP 74750

10,897 K
temperature
5.74
apparent magnitude
1,171× ☉
luminosity vs Sun
B0.5V
spectral type
Distance & comparison with our Sun
1,681 years
at light speed from Earth
1.89×
as hot as the Sun
1,171×
the Sun's light output
-2.82
absolute magnitude
Explore from here · roam the neighborhood
HR 5661B-type
Sky regionCircinusthis direction
StarHR 5527120 ly
StarHR 5836150 ly
StarHD 131491170 ly
StarXamistar
StarBeta Cirstar
Nearest stars
Bright stars in Circinus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.7To see it no equipment neededLook toward Circinus

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.