A-type star · white star

HR 104

HR 104 is a white star in the constellation Andromeda 283 ly from Earth. Its surface is about 9,619 K, about 1.7 times the Sun's surface temperature, and it shines at 55.41× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 283 years ago.

283 lybrightness mag 5.18A2Vs

Also catalogued as HD 2421 · HIP 2225

9,619 K
temperature
5.18
apparent magnitude
55.41× ☉
luminosity vs Sun
A2Vs
spectral type
Distance & comparison with our Sun
283 years
at light speed from Earth
1.67×
as hot as the Sun
55.41×
the Sun's light output
0.49
absolute magnitude
Explore from here · roam the neighborhood
HR 104A-type
Sky regionAndromedathis direction
StarTheta And41 ly
StarHR 28947 ly
StarHR 25047 ly
StarAlpheratzstar
StarMirachstar
Nearest stars
Bright stars in Andromeda
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.2To see it no equipment neededLook toward Andromeda

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.