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- Alpha_Circini abstract "Alpha Circini (α Cir, α Circini) is a variable star in the faint, southern, circumpolar constellation of Circinus. At an apparent visual magnitude of 3.19, it is the brightest star in the constellation and can be readily seen with the naked eye from the southern hemisphere. Parallax measurements of this star yield an estimated distance of 54.0 light-years (16.6 parsecs) from the Earth.This star belongs to a class of variables known as rapidly oscillating Ap stars. It oscillates with multiple, non-radial pulsation cycles and a dominant cycle of 6.8 minutes. The spectrum shows peculiar features caused by chemical stratification of the outer atmosphere. It displays a moderate deficiency of carbon, nitrogen and oxygen, while there is an overabundance of chromium (Cr). The stellar classification of A7 Vp SrCrEu indicates that this is a main sequence star with enhanced levels of strontium (Sr), chromium, and europium (Eu) in its atmosphere (compared to a typical star like the Sun).The mass of Alpha Circini is about 150% to 170% the mass of the Sun and it has double the Sun's radius, while the luminosity is more than 10 times that of the Sun. The effective temperature of the outer envelope is about 7,500 K, giving it the white hue typical of A-type stars. It is rotating with a period of 4.5 days and the pole is inclined by about 37 ± 4° to the line of sight from the Earth.Based upon its location and motion through space, Alpha Circini is a candidate member of a stellar kinematic group known as the Beta Pictoris moving group. This group shares a common origin and has an estimated age of about 12 million years. At the birth of this group, Alpha Circini was estimated to be located at a distance of about 91 ly (28 pc) from the center of the assemblage.".
- Alpha_Circini thumbnail Circinus_IAU.svg?width=300.
- Alpha_Circini wikiPageID "4360690".
- Alpha_Circini wikiPageRevisionID "601558155".
- Alpha_Circini age "~12 million".
- Alpha_Circini appmagV "3.19".
- Alpha_Circini bV "+0.24".
- Alpha_Circini class "A7 Vp SrCrEu".
- Alpha_Circini constell Circinus.
- Alpha_Circini epoch Epoch_(astronomy).
- Alpha_Circini equinox "J2000.0".
- Alpha_Circini gravity "4.1".
- Alpha_Circini hasPhotoCollection Alpha_Circini.
- Alpha_Circini mass "1.5".
- Alpha_Circini metalFe "0.13".
- Alpha_Circini pError "0.14".
- Alpha_Circini parallax "60.35".
- Alpha_Circini propMoDec "−233.51".
- Alpha_Circini propMoRa "−192.53".
- Alpha_Circini radialV "+7.2".
- Alpha_Circini rotation "days".
- Alpha_Circini temperature "7500".
- Alpha_Circini uB "+0.12".
- Alpha_Circini subject Category:A-type_main-sequence_stars.
- Alpha_Circini subject Category:Bayer_objects.
- Alpha_Circini subject Category:Circinus_(constellation).
- Alpha_Circini subject Category:Peculiar_stars.
- Alpha_Circini subject Category:Variable_stars.
- Alpha_Circini type A-typeStars.
- Alpha_Circini type BayerObjects.
- Alpha_Circini type CelestialBody109239740.
- Alpha_Circini type NaturalObject100019128.
- Alpha_Circini type Object100002684.
- Alpha_Circini type PeculiarStars.
- Alpha_Circini type PhysicalEntity100001930.
- Alpha_Circini type Star109444100.
- Alpha_Circini type VariableStar109469152.
- Alpha_Circini type VariableStars.
- Alpha_Circini type Whole100003553.
- Alpha_Circini type CelestialBody.
- Alpha_Circini type Star.
- Alpha_Circini type PhysicalBody.
- Alpha_Circini comment "Alpha Circini (α Cir, α Circini) is a variable star in the faint, southern, circumpolar constellation of Circinus. At an apparent visual magnitude of 3.19, it is the brightest star in the constellation and can be readily seen with the naked eye from the southern hemisphere. Parallax measurements of this star yield an estimated distance of 54.0 light-years (16.6 parsecs) from the Earth.This star belongs to a class of variables known as rapidly oscillating Ap stars.".
- Alpha_Circini label "Alfa Circini".
- Alpha_Circini label "Alfa Circini".
- Alpha_Circini label "Alfa Circini".
- Alpha_Circini label "Alpha Circini".
- Alpha_Circini label "Alpha Circini".
- Alpha_Circini label "Alpha Circini".
- Alpha_Circini label "Alpha Circini".
- Alpha_Circini label "コンパス座アルファ星".
- Alpha_Circini sameAs Alfa_Circini.
- Alpha_Circini sameAs Alpha_Circini.
- Alpha_Circini sameAs Alfa_Circini.
- Alpha_Circini sameAs コンパス座アルファ星.
- Alpha_Circini sameAs 컴퍼스자리_알파.
- Alpha_Circini sameAs Alpha_Circini.
- Alpha_Circini sameAs Alfa_Circini.
- Alpha_Circini sameAs Alpha_Circini.
- Alpha_Circini sameAs m.0bz4gf.
- Alpha_Circini sameAs Q1366241.
- Alpha_Circini sameAs Q1366241.
- Alpha_Circini sameAs Alpha_Circini.
- Alpha_Circini wasDerivedFrom Alpha_Circini?oldid=601558155.
- Alpha_Circini depiction Circinus_IAU.svg.
- Alpha_Circini isPrimaryTopicOf Alpha_Circini.
- Alpha_Circini name "α Circini".