A-type star · white star
HR 3657
HR 3657 is a white star in the constellation Cancer 508 ly from Earth. Its surface is about 9,585 K, about 1.7 times the Sun's surface temperature, and it shines at 54.05× the Sun's brightness. At magnitude 6.5 it is within reach of 50 mm binoculars; the light you see left it 508 years ago.
Also catalogued as HD 79248 · HIP 45272
9,585 K
temperature
6.48
apparent magnitude
54.05× ☉
luminosity vs Sun
A2V
spectral type
Distance & comparison with our Sun
508 years
at light speed from Earth
1.66×
as hot as the Sun
54.05×
the Sun's light output
0.52
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.