B-type star · blue-white star

HR 4493

HR 4493 is a blue-white star in the constellation Ursa Major 509 ly from Earth. Its surface is about 11,440 K, about 2.0 times the Sun's surface temperature, and it shines at 61.15× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 509 years ago.

509 lybrightness mag 6.35B9p...

Also catalogued as HD 101391 · HIP 56944

11,440 K
temperature
6.35
apparent magnitude
61.15× ☉
luminosity vs Sun
B9p...
spectral type
Distance & comparison with our Sun
509 years
at light speed from Earth
1.98×
as hot as the Sun
61.15×
the Sun's light output
0.38
absolute magnitude
Explore from here · roam the neighborhood
HR 4493B-type
Sky regionUrsa Majorthis direction
StarHR 465464 ly
StarHR 445775 ly
StarHR 456980 ly
StarAliothstar
StarDubhestar
Nearest stars
Bright stars in Ursa Major
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.3To see it 50 mm binocularsLook toward Ursa Major

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.