M-type star · red

HR 8421

994 lybrightness mag 6.16M4III

Also catalogued as HD 209857 · HIP 109033

3,634 K

temperature

6.16

apparent magnitude

278× ☉

luminosity vs Sun

M4III

spectral type

Distance & comparison with our Sun

994 years

at light speed from Earth

0.63×

as hot as the Sun

278×

the Sun's light output

-1.26

absolute magnitude

Explore from here · roam the neighborhood

HR 8421M-type

Sky regionLacertathis direction

Nearest stars

HR 8304 →86 ly apart
HR 8403 →110 ly apart
81Pi 2Cyg →130 ly apart
HR 8349 →140 ly apart
HR 8661 →150 ly apart
HR 8445 →180 ly apart

Bright stars in Lacerta

Stellio →mag 3.8
1 Lac →mag 4.1
5 Lac →mag 4.3
3Bet Lac →mag 4.4
11 Lac →mag 4.5
6 Lac →mag 4.5
2 Lac →mag 4.5
4 Lac →mag 4.5

Can you see it tonight?

BINOCULARS NEEDED

Brightness mag 6.2To see it 50 mm binocularsLook toward Lacerta

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.