B-type star · blue-white star

HR 5103

HR 5103 is a blue-white star in the constellation Centaurus 991 ly from Earth. Its surface is about 10,824 K, about 1.9 times the Sun's surface temperature, and it shines at 239× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 991 years ago.

991 lybrightness mag 6.32B8III

Also catalogued as HD 117919 · HIP 66236

10,824 K
temperature
6.32
apparent magnitude
239× ☉
luminosity vs Sun
B8III
spectral type
Distance & comparison with our Sun
991 years
at light speed from Earth
1.88×
as hot as the Sun
239×
the Sun's light output
-1.09
absolute magnitude
Explore from here · roam the neighborhood
HR 5103B-type
Sky regionCentaurusthis direction
StarHR 503834 ly
StarHR 4939110 ly
StarHR 5217130 ly
StarMenkentstar
StarGamma Censtar
Nearest stars
Bright stars in Centaurus
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.3To see it 50 mm binocularsLook toward Centaurus

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.