B-type star · blue-white star

42The Oph

436 lybrightness mag 3.27B2IV

Also catalogued as HR 6453 · HD 157056 · HIP 84970

13,256 K

temperature

3.27

apparent magnitude

766× ☉

luminosity vs Sun

B2IV

spectral type

Distance & comparison with our Sun

436 years

at light speed from Earth

2.30×

as hot as the Sun

766×

the Sun's light output

-2.36

absolute magnitude

Explore from here · roam the neighborhood

42The OphB-type

Sky regionOphiuchusthis direction

Nearest stars

HR 6474 →25 ly apart
51 Oph →35 ly apart
HR 6490 →42 ly apart
HD 160042 →48 ly apart
HR 6520 →49 ly apart
HR 6340 →60 ly apart

Bright stars in Ophiuchus

Sabik →mag 2.4
13Zet Oph →mag 2.5
Yed Prior →mag 2.7
Cebalrai →mag 2.8
27Kap Oph →mag 3.2
Yed Posterior →mag 3.2
64Nu Oph →mag 3.3
72 Oph →mag 3.7

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 3.3To see it no equipment neededLook toward Ophiuchus

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.