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• Sigma_Librae abstract "Sigma Librae (σ Lib, σ Librae) is a star in the constellation Libra. It has the traditional names Brachium ("Arm"Latin), Cornu ("Horn"Latin), and Zubenalgubi ("Southern Claw"Arabic). The apparent visual magnitude is +3.29, making it a third magnitude star that is visible to the naked eye. Based upon parallax measurements, this star is at a distance of roughly 288 light-years (88 parsecs) from Earth, with a 2% margin of error. At that distance, the visual magnitude of the star is diminished by 0.20 ± 0.17 from extinction caused by intervening gas and dust.This star was originally given the Bayer designation "Gamma Scorpii" (γ Sco) despite the fact that it is well within the constellation Libra and far from the boundary with Scorpius. It did not receive its current Bayer designation as Sigma Librae until the 19th century. The new name was agreed upon by Commission 3 of the International Astronomical Union on July 31, 1930.Sigma Librae has a spectral class M3/M4 III, which places it in the red giant stage of its evolution. This is a semi-regular variable star with a single pulsation period of 20 days. It shows small amplitude variations in magnitude of 0.10–0.15 on time scales as brief as 15–20 minutes, with cycles of repetition over intervals of 2.5–3.0 hours. This form of variability indicates that the star is on the asymptotic giant branch and is generating energy through the nuclear fusion of hydrogen and helium along concentric shells surrounding an inert core of carbon and oxygen.".
• Sigma_Librae thumbnail Libra_IAU.svg?width=300.
• Sigma_Librae wikiPageExternalLink zubenh.html.
• Sigma_Librae wikiPageID "3111712".
• Sigma_Librae wikiPageRevisionID "601996782".
• Sigma_Librae absmagV "–1.5".
• Sigma_Librae appmagV "+3.29".
• Sigma_Librae bV "+1.70".
• Sigma_Librae class "M3/M4 III".
• Sigma_Librae constell Libra_(constellation).
• Sigma_Librae epoch Epoch_(astronomy).
• Sigma_Librae equinox "J2000.0".
• Sigma_Librae gravity "0.9".
• Sigma_Librae hasPhotoCollection Sigma_Librae.
• Sigma_Librae mass "2.1".
• Sigma_Librae metalFe "0".
• Sigma_Librae pError "0.25".
• Sigma_Librae parallax "11.31".
• Sigma_Librae propMoDec "−43.34".
• Sigma_Librae propMoRa "–71.16".
• Sigma_Librae radialV "–4.2".
• Sigma_Librae temperature "3600".
• Sigma_Librae uB "+1.94".
• Sigma_Librae variable "Semi-regular".
• Sigma_Librae subject Category:Bayer_objects.
• Sigma_Librae subject Category:Libra_(constellation).
• Sigma_Librae subject Category:M-type_giants.
• Sigma_Librae subject Category:Stars_with_proper_names.
• Sigma_Librae type Animal100015388.
• Sigma_Librae type BayerObjects.
• Sigma_Librae type CelestialBody109239740.
• Sigma_Librae type Giant101323781.
• Sigma_Librae type LivingThing100004258.
• Sigma_Librae type M-typeGiants.
• Sigma_Librae type NaturalObject100019128.
• Sigma_Librae type Object100002684.
• Sigma_Librae type Organism100004475.
• Sigma_Librae type PhysicalEntity100001930.
• Sigma_Librae type Star109444100.
• Sigma_Librae type StarsWithProperNames.
• Sigma_Librae type Whole100003553.
• Sigma_Librae type CelestialBody.
• Sigma_Librae type Star.
• Sigma_Librae type PhysicalBody.
• Sigma_Librae comment "Sigma Librae (σ Lib, σ Librae) is a star in the constellation Libra. It has the traditional names Brachium ("Arm"Latin), Cornu ("Horn"Latin), and Zubenalgubi ("Southern Claw"Arabic). The apparent visual magnitude is +3.29, making it a third magnitude star that is visible to the naked eye. Based upon parallax measurements, this star is at a distance of roughly 288 light-years (88 parsecs) from Earth, with a 2% margin of error.".
• Sigma_Librae label "Brachium".
• Sigma_Librae label "Brachium".
• Sigma_Librae label "Sigma Librae".
• Sigma_Librae label "Sigma Librae".
• Sigma_Librae label "Sigma Librae".
• Sigma_Librae label "Sigma Librae".
• Sigma_Librae label "Sigma Librae".
• Sigma_Librae label "Сигма Весов".
• Sigma_Librae label "てんびん座シグマ星".
• Sigma_Librae label "折威七".
• Sigma_Librae sameAs Sigma_Librae.
• Sigma_Librae sameAs Brachium.
• Sigma_Librae sameAs Sigma_Librae.
• Sigma_Librae sameAs Sigma_Librae.
• Sigma_Librae sameAs Sigma_Librae.
• Sigma_Librae sameAs てんびん座シグマ星.
• Sigma_Librae sameAs Brachium.
• Sigma_Librae sameAs Sigma_Librae.
• Sigma_Librae sameAs m.08s3yh.
• Sigma_Librae sameAs Q15719.
• Sigma_Librae sameAs Q15719.
• Sigma_Librae sameAs Sigma_Librae.
• Sigma_Librae wasDerivedFrom Sigma_Librae?oldid=601996782.
• Sigma_Librae depiction Libra_IAU.svg.
• Sigma_Librae isPrimaryTopicOf Sigma_Librae.
• Sigma_Librae name "Sigma Librae".