A-type star · white star

HR 2123

HR 2123 is a white star in the constellation Auriga 440 ly from Earth. Its surface is about 8,194 K, about 1.4 times the Sun's surface temperature, and it shines at 44.10× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 440 years ago.

440 lybrightness mag 6.39A7III

Also catalogued as HD 40873 · HIP 28765

8,194 K
temperature
6.39
apparent magnitude
44.10× ☉
luminosity vs Sun
A7III
spectral type
Distance & comparison with our Sun
440 years
at light speed from Earth
1.42×
as hot as the Sun
44.10×
the Sun's light output
0.74
absolute magnitude
Explore from here · roam the neighborhood
HR 2123A-type
Sky regionAurigathis direction
StarHR 211220 ly
StarHR 218826 ly
StarOmicron Aur37 ly
StarMenkalinanstar
StarMahasimstar
Nearest stars
Bright stars in Auriga
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.4To see it 50 mm binocularsLook toward Auriga

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.