B-type star · blue-white star

HR 6690

HR 6690 is a blue-white star in the constellation Ophiuchus 633 ly from Earth. Its surface is about 10,316 K, about 1.8 times the Sun's surface temperature, and it shines at 101× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 633 years ago.

633 lybrightness mag 6.28B9III

Also catalogued as HD 163641 · HIP 87866

10,316 K
temperature
6.28
apparent magnitude
101× ☉
luminosity vs Sun
B9III
spectral type
Distance & comparison with our Sun
633 years
at light speed from Earth
1.79×
as hot as the Sun
101×
the Sun's light output
-0.16
absolute magnitude
Explore from here · roam the neighborhood
HR 6690B-type
Sky regionOphiuchusthis direction
Star66 Oph31 ly
StarHD 15822891 ly
StarHR 649793 ly
StarSabikstar
StarZeta Ophstar
Nearest stars
Bright stars in Ophiuchus
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.3To see it 50 mm binocularsLook toward Ophiuchus

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.