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- Sigma_Puppis abstract "Sigma Puppis (Sigma Pup, σ Puppis, σ Pup) is a binary star system in the southern constellation of Puppis. It has an apparent visual magnitude of 3.25, which is bright enough to be visible to the naked eye at night from the southern hemisphere. Through a telescope, it appears as an bright, orange-hued star with a nearby white companion. Parallax measurements indicate this star is located at a distance of about 194 light-years (59 parsecs) from Earth.This is a spectroscopic binary system, consisting of an orbiting pair of stars that have not been individually resolved with a telescope. Their orbital period is 257.8 days and the eccentricity is 0.17. The pair form an eclipsing binary of the Beta Lyrae type and a period of 130.5 days, or one half of their orbital period. The eclipse of the primary component causes a decline of 0.04 magnitudes, while the secondary eclipse reduces the magnitude by 0.03.The combined stellar classification is K5 III, which matches the spectrum of a giant star. The measured angular diameter of the primary star is 16.71 ± 2.84 mas. At the estimated distance of this system, this yields a physical size of about 107 times the radius of the Sun. The primary component shows the behavior of a slow irregular variable.In addition to its binary components, Sigma Puppis has a more distant companion that has a matching proper motion, suggesting that it may be gravitationally bound to the binary. This magnitude 8.5 star is at an angular separation of 22.4 arcseconds with a position angle of 74° from Sigma Puppis, which is equivalent to a projected separation of 1,200 Astronomical Units. In 1970, American astronomer Olin J. Eggen suggested that Sigma Puppis belonged to a moving group of stars that share a similar motion through space, and thereby a common origin. It served as the eponym for this, the σ Puppis group. The existence of this group was later brought into question.".
- Sigma_Puppis thumbnail Puppis_IAU.svg?width=300.
- Sigma_Puppis wikiPageID "3116461".
- Sigma_Puppis wikiPageRevisionID "593048783".
- Sigma_Puppis appmagV "3.25".
- Sigma_Puppis bV "+1.52".
- Sigma_Puppis class "K5 III".
- Sigma_Puppis component "σ Pup A".
- Sigma_Puppis constell Puppis.
- Sigma_Puppis eccentricity "0.17".
- Sigma_Puppis epoch "J2000".
- Sigma_Puppis hasPhotoCollection Sigma_Puppis.
- Sigma_Puppis k "18.6".
- Sigma_Puppis pError "0.15".
- Sigma_Puppis parallax "16.84".
- Sigma_Puppis periarg "349.3".
- Sigma_Puppis periastron "20418.6".
- Sigma_Puppis periodUnitless "2.227392E7".
- Sigma_Puppis propMoDec "+188.31".
- Sigma_Puppis propMoRa "–59.55".
- Sigma_Puppis radialV "+87.7".
- Sigma_Puppis radius "107".
- Sigma_Puppis rotationalVelocity "3".
- Sigma_Puppis uB "+1.77".
- Sigma_Puppis subject Category:Bayer_objects.
- Sigma_Puppis subject Category:Puppis_(constellation).
- Sigma_Puppis subject Category:Stars_with_proper_names.
- Sigma_Puppis type BayerObjects.
- Sigma_Puppis type CelestialBody109239740.
- Sigma_Puppis type NaturalObject100019128.
- Sigma_Puppis type Object100002684.
- Sigma_Puppis type PhysicalEntity100001930.
- Sigma_Puppis type Star109444100.
- Sigma_Puppis type StarsWithProperNames.
- Sigma_Puppis type Whole100003553.
- Sigma_Puppis type CelestialBody.
- Sigma_Puppis type Star.
- Sigma_Puppis type PhysicalBody.
- Sigma_Puppis comment "Sigma Puppis (Sigma Pup, σ Puppis, σ Pup) is a binary star system in the southern constellation of Puppis. It has an apparent visual magnitude of 3.25, which is bright enough to be visible to the naked eye at night from the southern hemisphere. Through a telescope, it appears as an bright, orange-hued star with a nearby white companion.".
- Sigma_Puppis label "Hadir".
- Sigma_Puppis label "Sigma Puppis".
- Sigma_Puppis label "Sigma Puppis".
- Sigma_Puppis label "Sigma Puppis".
- Sigma_Puppis label "Sigma Puppis".
- Sigma_Puppis label "Sigma Puppis".
- Sigma_Puppis label "弧矢增廿四".
- Sigma_Puppis sameAs Hadir.
- Sigma_Puppis sameAs Sigma_Puppis.
- Sigma_Puppis sameAs Sigma_Puppis.
- Sigma_Puppis sameAs Sigma_Puppis.
- Sigma_Puppis sameAs Sigma_Puppis.
- Sigma_Puppis sameAs m.08sgvd.
- Sigma_Puppis sameAs Q1283215.
- Sigma_Puppis sameAs Q1283215.
- Sigma_Puppis sameAs Sigma_Puppis.
- Sigma_Puppis wasDerivedFrom Sigma_Puppis?oldid=593048783.
- Sigma_Puppis depiction Puppis_IAU.svg.
- Sigma_Puppis isPrimaryTopicOf Sigma_Puppis.
- Sigma_Puppis name "Sigma Puppis".