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Theta Doradus
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Theta Doradus
Theta Doradus, Latinized from θ Doradus, is a solitary star in the southern constellation of Dorado. Based upon an annual parallax shift of 6.64 mas as seen from Earth, it is located around 540 light years from the Sun. With an apparent visual magnitude of +4.82, the star is bright enough to be faintly visible to the naked eye.
This is an evolved orange-hued K-type giant star with a stellar classification of K2/3 III CNIb/II, where the suffix indicates it is a CN star, a cool giant showing unusually strong CN bands in its spectrum. With an age of around 1.17 billion years, it has an estimated 2.23 times the mass of the Sun and has expanded to about 36 times the Sun's radius. It is radiating 427 times the solar luminosity from its photosphere at an effective temperature of 4,320 K.
In the Chinese astronomical adaptation of the European southern hemisphere constellations, 夾白 (Jiá Bái), meaning White Patches Attached, refers to an asterism consisting of θ Doradus and α Reticuli. Consequently, θ Doradus itself is known as 夾白一 (Jiá Bái yī, English: the First Star of White Patches Attached.)
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Theta Doradus
Theta Doradus, Latinized from θ Doradus, is a solitary star in the southern constellation of Dorado. Based upon an annual parallax shift of 6.64 mas as seen from Earth, it is located around 540 light years from the Sun. With an apparent visual magnitude of +4.82, the star is bright enough to be faintly visible to the naked eye.
This is an evolved orange-hued K-type giant star with a stellar classification of K2/3 III CNIb/II, where the suffix indicates it is a CN star, a cool giant showing unusually strong CN bands in its spectrum. With an age of around 1.17 billion years, it has an estimated 2.23 times the mass of the Sun and has expanded to about 36 times the Sun's radius. It is radiating 427 times the solar luminosity from its photosphere at an effective temperature of 4,320 K.
In the Chinese astronomical adaptation of the European southern hemisphere constellations, 夾白 (Jiá Bái), meaning White Patches Attached, refers to an asterism consisting of θ Doradus and α Reticuli. Consequently, θ Doradus itself is known as 夾白一 (Jiá Bái yī, English: the First Star of White Patches Attached.)
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