K-type star · orange

HD 217731

HD 217731 is an orange in the constellation Andromeda 395 ly from Earth. Its surface is about 4,843 K, about 0.8 times the Sun's surface temperature, and it shines at 34.20× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 395 years ago.

395 lybrightness mag 6.43K0

Also catalogued as HIP 113750

4,843 K
temperature
6.43
apparent magnitude
34.20× ☉
luminosity vs Sun
K0
spectral type
Distance & comparison with our Sun
395 years
at light speed from Earth
0.84×
as hot as the Sun
34.20×
the Sun's light output
1.01
absolute magnitude
Explore from here · roam the neighborhood
HD 217731K-type
Sky regionAndromedathis direction
Star2 And30 ly
StarHR 887538 ly
Star9 And40 ly
StarAlpheratzstar
StarMirachstar
Nearest stars
Bright stars in Andromeda
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.4To see it 50 mm binocularsLook toward Andromeda

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.