beta Lupi

The stellar classification of B2 III indicates this is a giant star. The effective temperature of the star's outer envelope is 24,090 K, giving it the blue-white hue of a B-type star. With an age of around 25 million years, it is near the end of its hydrogen phase, where hydrogen is fused into the element helium, and transferring into a red supergiant star. At about 8.8 solar masses, it may have enough mass to end its life as a Type II supernova, but there is the possibility of Beta Lupi becoming a white dwarf.

This is a multi-period Beta Cephei variable with a dominant oscillation period of 0.232 days. It is a proper motion member of the Upper Centaurus–Lupus sub-group in the Scorpius–Centaurus OB association, the nearest such co-moving association of massive stars to the Sun. Beta Lupi has a high proper motion of more than 50 mas per year, suggesting a significant transverse velocity.

It is positioned about 1.3° SSW of the supernova remnant SN 1006.

In Chinese, {{lang|zh|騎官}} ({{lang|zh-Latn|Qí Guān}}), meaning Imperial Guards, refers to an asterism consisting of β Lupi, γ Lupi, δ Lupi, κ Centauri, λ Lupi, ε Lupi, μ Lup, π Lupi, ο Lupi and α Lupi.{{in lang|zh}} 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN|978-986-7332-25-7}}. Consequently, the Chinese name for β Lupi itself is {{lang|zh|騎官四}} ({{lang|zh-Latn|Qí Guān sì}}, {{langx|en|the Fourth Star of Imperial Guards}}.).{{in lang|zh}} [http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_h_l.htm 香港太空館 - 研究資源 - 亮星中英對照表] {{webarchive|url=https://web.archive.org/web/20110129031951/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_h_l.htm |date=2011-01-29 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.] From the French rendering of this Chinese name derives the traditional European name Kekouan (Ke Kwan).[https://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Lupus*.html Richard Hinckley Allen: Star Names — Their Lore and Meaning: Lupus]

• Traditional Chinese star names#Lupus

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{{Stars of Lupus}}

Category:B-type giants

Category:Upper Centaurus Lupus

Category:Lupus (constellation)

Lupi, Beta

Category:Durchmusterung objects

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