K-type star · orange

HR 6404

HR 6404 is an orange in the constellation Ophiuchus 291 ly from Earth. Its surface is about 4,523 K, about 0.8 times the Sun's surface temperature, and it shines at 28.21× the Sun's brightness. At magnitude 6.0 it is bright enough to see with the naked eye; the light you see left it 291 years ago.

291 lybrightness mag 5.98K1III

Also catalogued as HD 155970 · HIP 84402

4,523 K

temperature

5.98

apparent magnitude

28.21× ☉

luminosity vs Sun

K1III

spectral type

Distance & comparison with our Sun

291 years

at light speed from Earth

0.78×

as hot as the Sun

28.21×

the Sun's light output

1.22

absolute magnitude

Explore from here · roam the neighborhood

HR 6404K-type

Sky regionOphiuchusthis direction

Nearest stars

Bright stars in Ophiuchus

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 6.0To see it no equipment neededLook 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.