K-type star · orange

81 Aqr

81 Aqr is an orange in the constellation Aquarius 495 ly from Earth. Its surface is about 3,921 K, about 0.7 times the Sun's surface temperature, and it shines at 64.62× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 495 years ago.

495 lybrightness mag 6.23K5III

Also catalogued as HR 8757 · HD 217531 · HIP 113674

3,921 K
temperature
6.23
apparent magnitude
64.62× ☉
luminosity vs Sun
K5III
spectral type
Distance & comparison with our Sun
495 years
at light speed from Earth
0.68×
as hot as the Sun
64.62×
the Sun's light output
0.32
absolute magnitude
Explore from here · roam the neighborhood
81 AqrK-type
Sky regionAquariusthis direction
StarHR 864543 ly
StarHR 895175 ly
StarHR 853084 ly
StarSadalsuudstar
StarSadalmelikstar
Nearest stars
Bright stars in Aquarius
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.2To see it 50 mm binocularsLook toward Aquarius

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.