F-type star · yellow-white star
HR 1644
HR 1644 is a yellow-white star in the constellation Auriga 777 ly from Earth. Its surface is about 6,654 K, about 1.2 times the Sun's surface temperature, and it shines at 164× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 777 years ago.
Also catalogued as HD 32655 · HIP 23799
6,654 K
temperature
6.20
apparent magnitude
164× ☉
luminosity vs Sun
F2IIp...
spectral type
Distance & comparison with our Sun
777 years
at light speed from Earth
1.15×
as hot as the Sun
164×
the Sun's light output
-0.68
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.