B-type star · blue-white star

HR 7815

2,118 lybrightness mag 6.49B9.5III

Also catalogued as HD 194668 · HIP 100651

10,448 K

temperature

6.49

apparent magnitude

931× ☉

luminosity vs Sun

B9.5III

spectral type

Distance & comparison with our Sun

2,118 years

at light speed from Earth

1.81×

as hot as the Sun

931×

the Sun's light output

-2.57

absolute magnitude

Explore from here · roam the neighborhood

HR 7815B-type

Sky regionCygnusthis direction

Nearest stars

HR 7791 →140 ly apart
HR 8164 →370 ly apart
55 Cyg →390 ly apart
HR 7993 →410 ly apart
HR 8281 →420 ly apart
HR 7762 →430 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?

BINOCULARS NEEDED

Brightness mag 6.5To see it 50 mm binocularsLook 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.