A-type star · white star

Merak

Merak is a white star in the constellation Ursa Major 79.7 ly from Earth. Its surface is about 9,731 K, about 1.7 times the Sun's surface temperature, and it shines at 60.31× the Sun's brightness. At magnitude 2.3 it is bright enough to see with the naked eye; the light you see left it 80 years ago.

79.7 lybrightness mag 2.34A1V

Also catalogued as Beta UMa · HR 4295 · HD 95418 · HIP 53910 · Gliese GJ 9343

9,731 K

temperature

2.34

apparent magnitude

60.31× ☉

luminosity vs Sun

A1V

spectral type

Distance & comparison with our Sun

80 years

at light speed from Earth

1.69×

as hot as the Sun

60.31×

the Sun's light output

0.40

absolute magnitude

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MerakA-type

Sky regionUrsa Majorthis direction

Nearest stars

Bright stars in Ursa Major

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 2.3To see it no equipment neededLook 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.