K-type star · orange
HR 3557
HR 3557 is an orange in the constellation Hydra 1,418 ly from Earth. Its surface is about 4,740 K, about 0.8 times the Sun's surface temperature, and it shines at 581× the Sun's brightness. At magnitude 6.1 it is within reach of 50 mm binoculars; the light you see left it 1,418 years ago.
Also catalogued as HD 76494 · HIP 43902
4,740 K
temperature
6.13
apparent magnitude
581× ☉
luminosity vs Sun
G8II-III
spectral type
Distance & comparison with our Sun
1,418 years
at light speed from Earth
0.82×
as hot as the Sun
581×
the Sun's light output
-2.06
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.