K-type star · orange

HR 4739

HR 4739 is an orange in the constellation Crux 443 ly from Earth. Its surface is about 3,730 K, about 0.6 times the Sun's surface temperature, and it shines at 113× the Sun's brightness. At magnitude 5.4 it is bright enough to see with the naked eye; the light you see left it 443 years ago.

443 lybrightness mag 5.38M4/M5III

Also catalogued as HD 108396 · HIP 60781

3,730 K
temperature
5.38
apparent magnitude
113× ☉
luminosity vs Sun
M4/M5III
spectral type
Distance & comparison with our Sun
443 years
at light speed from Earth
0.65×
as hot as the Sun
113×
the Sun's light output
-0.29
absolute magnitude
Explore from here · roam the neighborhood
HR 4739K-type
Sky regionCruxthis direction
StarMu¹ Cru42 ly
StarMu² Cru47 ly
StarHR 488550 ly
StarGacruxstar
StarImaistar
Nearest stars
Bright stars in Crux
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.4To see it no equipment neededLook toward Crux

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.