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Lambda Columbae

Variable star in the constellation Columba From Wikipedia, the free encyclopedia

Lambda Columbae
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Lambda Columbae, Latinized from λ Columbae, is a probable binary star[13] in the southern constellation of Columba. With an apparent visual magnitude of 4.86,[3] it is faintly visible to the naked eye. The measured annual parallax shift of 9.75 mas[2] yields an estimated distance of roughly 335 light years.

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Lambda Columbae has a stellar classification of B5 V,[4] indicating that it is a B-type main sequence star. It is a suspected rotating ellipsoidal variable[14] with a period of 0.64 days and an amplitude of 0.07 magnitude.[15] Confirmation would indicate that this is a close binary system.[5] It has an estimated age of around 57 million years.[4]

In Chinese, (), meaning Son, refers to an asterism consisting of λ Columbae and β Columbae.[16] Consequently, λ Columbae itself is known as 子一 (Zǐ yī, English: the First Star of Son.).[17] From this Chinese name, the name Tsze is derived.[18]

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