B-type star · blue-white star

81Pi 2Cyg

1,106 lybrightness mag 4.23B3III

Also catalogued as HR 8335 · HD 207330 · HIP 107533

11,920 K

temperature

4.23

apparent magnitude

2,034× ☉

luminosity vs Sun

B3III

spectral type

Distance & comparison with our Sun

1,106 years

at light speed from Earth

2.07×

as hot as the Sun

2,034×

the Sun's light output

-3.42

absolute magnitude

Explore from here · roam the neighborhood

81Pi 2CygB-type

Sky regionCygnusthis direction

Nearest stars

HR 8304 →91 ly apart
HR 8445 →91 ly apart
HR 8403 →130 ly apart
HR 8421 →130 ly apart
63 Cyg →150 ly apart
HR 8040 →150 ly apart

Bright stars in Cygnus

Sadr →mag 2.2
Aljanah →mag 2.5
Fawaris →mag 2.9
64Zet Cyg →mag 3.2
62Xi Cyg →mag 3.7
65Tau Cyg →mag 3.7
10Iot2Cyg →mag 3.8
1Kap Cyg →mag 3.8

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 4.2To see it no equipment neededLook toward Cygnus

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.