K-type star · orange
HR 172
HR 172 is an orange in the constellation Cetus 478 ly from Earth. Its surface is about 4,970 K, about 0.9 times the Sun's surface temperature, and it shines at 47.34× the Sun's brightness. At magnitude 6.5 it is within reach of 50 mm binoculars; the light you see left it 478 years ago.
Also catalogued as HD 3794 · HIP 3175
4,970 K
temperature
6.49
apparent magnitude
47.34× ☉
luminosity vs Sun
G8III
spectral type
Distance & comparison with our Sun
478 years
at light speed from Earth
0.86×
as hot as the Sun
47.34×
the Sun's light output
0.66
absolute magnitude
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BINOCULARS NEEDED
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.