A-type star · white star

21Iot Ser

190 lybrightness mag 4.51A1V

Also catalogued as HR 5842 · HD 140159 · HIP 76852

9,412 K

temperature

4.51

apparent magnitude

46.43× ☉

luminosity vs Sun

A1V

spectral type

Distance & comparison with our Sun

190 years

at light speed from Earth

1.63×

as hot as the Sun

46.43×

the Sun's light output

0.68

absolute magnitude

Explore from here · roam the neighborhood

21Iot SerA-type

Sky regionSerpensthis direction

Nearest stars

22Tau7Ser →17 ly apart
44Pi Ser →22 ly apart
HR 5783 →22 ly apart
18Tau5Ser →23 ly apart
10Del CrB →29 ly apart
20Gam Her →32 ly apart

Bright stars in Serpens

Unukalhai →mag 2.6
58Eta Ser →mag 3.2
32Mu Ser →mag 3.5
55Xi Ser →mag 3.5
Zhou →mag 3.6
37Eps Ser →mag 3.7
13Del Ser →mag 3.8
41Gam Ser →mag 3.9

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 4.5To see it no equipment neededLook toward Serpens

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.