Editing Lambda Scorpii (section)

{{short description|Triple star system in the constellation Scorpius}}
{{Starbox begin
 | name=λ Scorpii
}}
{{Starbox image
 | image = {{Location mark
|image=Scorpius constellation map.svg|alt=|float=center|width=280
|label=|position=right
|mark=Red circle.svg|mark_width=12|mark_link=Shaula|x=247|y=712
}}
 | caption = Location of λ Scorpii (circled)}}
{{Starbox observe
 | pronounce    = {{IPAc-en|'|sh|ɔː|l|@}}<ref name=Kunitzsch/><ref name="IAU-CSN"/>
 | epoch        = [[J2000]]
 | ra           = {{RA|17|33|36.520}}<ref name=hipparcos/>
 | dec          = {{DEC|−37|06|13.76}}<ref name=hipparcos/>
 | appmag_v     = {{nowrap|1.62 + 14.9 + 12.0}}<ref name=hipparcos/><ref name="REED"/>
 | constell     = [[Scorpius]]
}}
{{Starbox character
 | class        = {{nowrap|B1.5IV + B2IV}}<ref name=tango/><ref name=variability/>
 | b-v          = −0.240<ref name=hamdy/>
 | u-b          = −0.880<ref name=hamdy/>
 | variable     = [[Beta Cephei variable|Beta Cephei]] (A)<ref name=handler/>
}}
{{Starbox astrometry
 | component_name = (component A)
 | radial_v     = −3.00<ref name=Gontcharov2006/>
 | prop_mo_ra   = −8.90<ref name=hipparcos/>
 | prop_mo_dec  = −29.95
 | pm_footnote  = <ref name=hipparcos/>
 | parallax     = 5.71
 | p_error      = 0.90
 | parallax_footnote = <ref name=hipparcos/>
 | absmag_v     = −3.70<ref name=balona/>
}}
{{Starbox orbit
 | reference = <ref name=msc/>
 | primary = A
 | name = B
 | period = 2.8825
 | axis_unitless = {{val|49.3|ul=mas}}
 | eccentricity = 0.121
 | inclination = 77.2
}}
{{Starbox orbit
 | reference = <ref name=msc/>
 | primary = Aa
 | name = Ab
 | period_unitless = {{val|5.9520|ul=d}}
 | eccentricity = 0.26
 | k1 = 39.3
}}
{{Starbox detail
 | component1   = λ Sco Aa
 | mass         = 10.4<ref name=tango/>
 | radius       = 8.8{{±|1.2}}<ref name=handler/>
 | luminosity   = 36,300<ref name=handler/>
 | temperature  = {{val|25000|1000|fmt=commas}}<ref name=handler/>
 | metal_fe=|gravity = 3.8<ref name=variability/>
 | rotational_velocity = 150<ref name=handler/>
 | rotation = {{val|3.4|0.5|ul=d}}<ref name=handler/>
 | age_myr      =
 | component2   = λ Sco B
 | mass2        = 8.1<ref name=tango/>
 | radius2      = 4.7{{±|1.0}}<ref name=handler/>
 | temperature2 = {{val|25000|1000|fmt=commas}}<ref name=handler/>
 | gravity2     = 4.0<ref name=variability/>
}}
{{Starbox detail|no_heading=y
 | component1 = λ Sco Ab
 | mass = 1.8<ref name=tango/>
}}
{{Starbox catalog
 | names = {{odlist | name=Shaula | F=35&nbsp;Scorpii, 35&nbsp;Sco | HR=6527 | CD=-37&nbsp;11673 | HD=158926 | SAO=208954 | FK5=652 | HIP=85927 | CCDM=J17336-3706A/B/C }}
}}
{{Starbox reference|Simbad=Lambda+Sco}}
{{Starbox end}}

'''Lambda Scorpii''' is a triple [[star system]] and the second-brightest object in the [[constellation]] of [[Scorpius]]. It is formally named '''Shaula'''; ''Lambda Scorpii'' is its [[Bayer designation]], which is [[Latinisation of names|Latinised]] from '''λ Scorpii''' and abbreviated '''Lambda Sco''' or '''λ Sco'''. With an [[apparent visual magnitude]] of 1.62, it is one of the [[List of brightest stars|brightest stars]] in the [[night sky]].