A-type star · white star

Yildun

Yildun is a white star in the constellation Ursa Minor 172 ly from Earth. Its surface is about 9,871 K, about 1.7 times the Sun's surface temperature, and it shines at 44.14× the Sun's brightness. At magnitude 4.3 it is bright enough to see with the naked eye; the light you see left it 172 years ago.

172 lybrightness mag 4.35A1Vn

Also catalogued as Delta UMi · HR 6789 · HD 166205 · HIP 85822

9,871 K
temperature
4.35
apparent magnitude
44.14× ☉
luminosity vs Sun
A1Vn
spectral type
Distance & comparison with our Sun
172 years
at light speed from Earth
1.71×
as hot as the Sun
44.14×
the Sun's light output
0.74
absolute magnitude
Explore from here · roam the neighborhood
YildunA-type
Sky regionUrsa Minorthis direction
Star24 UMi19 ly
StarHR 468622 ly
StarHR 559634 ly
StarKochabstar
StarPherkadstar
Nearest stars
Bright stars in Ursa Minor
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.3To see it no equipment neededLook toward Ursa Minor

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.