A-type star · white star

HD 21684

377 lybrightness mag 6.50A5

Also catalogued as HIP 16425

7,844 K

temperature

6.50

apparent magnitude

29.30× ☉

luminosity vs Sun

spectral type

Distance & comparison with our Sun

377 years

at light speed from Earth

1.36×

as hot as the Sun

29.30×

the Sun's light output

1.18

absolute magnitude

Explore from here · roam the neighborhood

HD 21684A-type

Sky regionPerseusthis direction

Nearest stars

HR 1176 →36 ly apart
HR 923 →44 ly apart
HR 1041 →47 ly apart
HR 1234 →50 ly apart
35Sig Per →50 ly apart
HR 956 →53 ly apart

Bright stars in Perseus

Mirfak →mag 1.8
44Zet Per →mag 2.8
45Eps Per →mag 2.9
23Gam Per →mag 2.9
39Del Per →mag 3.0
25Rho Per →mag 3.3
Miram →mag 3.8
41Nu Per →mag 3.8

Can you see it tonight?

BINOCULARS NEEDED

Brightness mag 6.5To see it 50 mm binocularsLook toward Perseus

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.