K-type star · orange

Unukalhai

Unukalhai is an orange in the constellation Serpens 74.0 ly from Earth. Its surface is about 4,375 K, about 0.8 times the Sun's surface temperature, and it shines at 39.74× the Sun's brightness. At magnitude 2.6 it is bright enough to see with the naked eye; the light you see left it 74 years ago.

74.0 lybrightness mag 2.63K2III

Also catalogued as Alpha Ser · HR 5854 · HD 140573 · HIP 77070 · Gliese Gl 596.2

4,375 K
temperature
2.63
apparent magnitude
39.74× ☉
luminosity vs Sun
K2III
spectral type
Distance & comparison with our Sun
74 years
at light speed from Earth
0.76×
as hot as the Sun
39.74×
the Sun's light output
0.85
absolute magnitude
Explore from here · roam the neighborhood
UnukalhaiK-type
Sky regionSerpensthis direction
StarEpsilon Ser4.8 ly
Star5 Ser14 ly
Star39 Ser19 ly
StarEta Serstar
StarMu Serstar
Nearest stars
Bright stars in Serpens
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 2.6To see it no equipment neededLook toward Serpens

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.