K-type star · orange

9 Boo

9 Boo is an orange in the constellation Boötes 581 ly from Earth. Its surface is about 3,884 K, about 0.7 times the Sun's surface temperature, and it shines at 272× the Sun's brightness. At magnitude 5.0 it is bright enough to see with the naked eye; the light you see left it 581 years ago.

581 lybrightness mag 5.02K3IIIvar

Also catalogued as HR 5247 · HD 121710 · HIP 68103

3,884 K
temperature
5.02
apparent magnitude
272× ☉
luminosity vs Sun
K3IIIvar
spectral type
Distance & comparison with our Sun
581 years
at light speed from Earth
0.67×
as hot as the Sun
272×
the Sun's light output
-1.24
absolute magnitude
Explore from here · roam the neighborhood
9 BooK-type
Sky regionBoötesthis direction
StarHR 514552 ly
StarHR 516461 ly
StarHR 514364 ly
StarIzarstar
StarMuphridstar
Nearest stars
Bright stars in Boötes
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.0To see it no equipment neededLook toward Boötes

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.