K-type star · orange

HR 6640

HR 6640 is an orange in the constellation Ara 843 ly from Earth. Its surface is about 4,869 K, about 0.8 times the Sun's surface temperature, and it shines at 213× the Sun's brightness. At magnitude 6.1 it is within reach of 50 mm binoculars; the light you see left it 843 years ago.

843 lybrightness mag 6.09G6III

Also catalogued as HD 162123 · HIP 87404

4,869 K
temperature
6.09
apparent magnitude
213× ☉
luminosity vs Sun
G6III
spectral type
Distance & comparison with our Sun
843 years
at light speed from Earth
0.84×
as hot as the Sun
213×
the Sun's light output
-0.97
absolute magnitude
Explore from here · roam the neighborhood
HR 6640K-type
Sky regionArathis direction
StarHR 657252 ly
StarHR 675962 ly
StarTheta Ara80 ly
StarBeta Arastar
StarAlpha Arastar
Nearest stars
Bright stars in Ara
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.1To see it 50 mm binocularsLook toward Ara

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.