A-type star · white star

HR 4584

HR 4584 is a white star in the constellation Ursa Major 390 ly from Earth. Its surface is about 7,844 K, about 1.4 times the Sun's surface temperature, and it shines at 31.59× the Sun's brightness. At magnitude 6.5 it is within reach of 50 mm binoculars; the light you see left it 390 years ago.

390 lybrightness mag 6.49A9III

Also catalogued as HD 104179 · HIP 58512

7,844 K

temperature

6.49

apparent magnitude

31.59× ☉

luminosity vs Sun

A9III

spectral type

Distance & comparison with our Sun

390 years

at light speed from Earth

1.36×

as hot as the Sun

31.59×

the Sun's light output

1.10

absolute magnitude

Explore from here · roam the neighborhood

HR 4584A-type

Sky regionUrsa Majorthis direction

StarHR 478455 ly

StarHR 459356 ly

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StarAliothstar

StarDubhestar

Nearest stars

Bright stars in Ursa Major

Can you see it tonight?

BINOCULARS NEEDED

Brightness mag 6.5To 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.