Zeta Lupi
star in the constellation Lupus
ζ Lupi (Latinised as Zeta Lupi) is the brighter component of a wide double star in the constellation Lupus, consisting of an orange-hued primary and a fainter secondary with a golden-yellow hue. It is visible to the naked eye with a combined apparent visual magnitude of 3.41. Based upon an annual parallax shift of 27.80 mas as seen from Earth, it is located 117.3 light-years from the Sun.
This is a probable binary star system. As of 2013, the pair had an angular separation of 71.20 arcseconds along a position angle of 249°. The primary, component A, is an evolved G-type giant star with a visual magnitude of 3.50 and a stellar classification of G7 III. This is a red clump star, indicating that it is generating energy through the thermonuclear fusion of helium in its core region. It is 2.6 times more massive than the Sun and nine times larger. Zeta Lupi is 50 times more luminous than the Sun, emitting this energy from its photosphere at an effective temperature of 5114 K.
The secondary, component B, has a visual magnitude of 6.74.
“Zeta Lupi” enters the record as star in the constellation Lupus. Crown Archives preserves that source wording while asking what Zeta, Lupi and star can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 13, 2026. The linked authority identifier is Q135585. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2013.
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This entry incorporates text from “Zeta Lupi” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.