K-type star · orange
Tau Oct
Tau Oct is an orange in the constellation Octans 486 ly from Earth. Its surface is about 4,161 K, about 0.7 times the Sun's surface temperature, and it shines at 122× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 486 years ago.
Also catalogued as HR 8862 · HD 219765 · HIP 115836
4,161 K
temperature
5.50
apparent magnitude
122× ☉
luminosity vs Sun
K2III
spectral type
Distance & comparison with our Sun
486 years
at light speed from Earth
0.72×
as hot as the Sun
122×
the Sun's light output
-0.37
absolute magnitude
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VISIBLE TO THE NAKED EYE
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.