K-type star · orange

HR 3639

HR 3639 is an orange in the constellation Cancer 468 ly from Earth. Its surface is about 3,995 K, about 0.7 times the Sun's surface temperature, and it shines at 68.80× the Sun's brightness. At magnitude 6.0 it is within reach of 50 mm binoculars; the light you see left it 468 years ago.

468 lybrightness mag 6.04M6S

Also catalogued as HD 78712 · HIP 45058

3,995 K
temperature
6.04
apparent magnitude
68.80× ☉
luminosity vs Sun
M6S
spectral type
Distance & comparison with our Sun
468 years
at light speed from Earth
0.69×
as hot as the Sun
68.80×
the Sun's light output
0.26
absolute magnitude
Explore from here · roam the neighborhood
HR 3639K-type
Sky regionCancerthis direction
Star66 Cnc19 ly
Star57 Cnc29 ly
StarRho² Cnc42 ly
StarTarfstar
StarAsellus Australisstar
Nearest stars
Bright stars in Cancer
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.0To see it 50 mm binocularsLook toward Cancer

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.