- Beta Sagittarii
Starbox short
name=β¹ Sagittarii
epoch=J2000.0
constell=Sagittarius
ra=19h 22m 38.3s
dec=-44° 27' 32"
spectral=B9V
appmag_v=+3.96
dist_ly=378 ± 42
dist_pc=116 ± 13
names=Arkab Prior, HR 7337,
HD 181454, SAO 229646,
HIP 95241, CCDM 19226-4428TheBayer designation Beta Sagittarii (β Sgr / β Sagittarii) is shared by twostar system s, β¹ Sagittarii and β² Sagittarii, in theconstellation Sagittarius. The two stars are separated by 0.36° on the sky. Beta Sagittarii also has the traditional name Arkab, from the Arabic عرقوب "carqūb" meaning "hamstring".β¹ Sagittarii
Beta-1 Sagittarii, also called Arkab Prior since it leads β² across the sky, is a
binary star lying 378light years fromEarth . Arkab Prior A is a spectral type B9main sequence dwarf which has anapparent magnitude of +3.96. Arkab Prior B is a type A3 dwarf with an apparent magnitude of +7.4. The two stars have a separation on the sky of 28arcseconds , which puts them at least 3300Astronomical Units apart.β² Sagittarii
Starbox short
name=β² Sagittarii
epoch=J2000.0
constell=Sagittarius
ra=19h 23m 13.2s
dec=-44° 47' 59"
spectral=F2III
appmag_v=+4.27
dist_ly=139 ± 5
dist_pc=43 ± 2
names=Arkab Posterior, HR 7343,
HD 181623, SAO 229654,
HIP 95294Beta-2 Sagittarii, also called Arkab Posterior since it trails β¹ across the sky, is a spectral type F2 giant which has an
apparent magnitude of +4.27. It is 137light year s fromEarth .
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