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- Pi_Aquarii abstract "Pi Aquarii (π Aqr, π Aquarii) is the Bayer designation for a binary star in the equatorial constellation of Aquarius. It shares the traditional name Seat with Delta Aquarii, where it has long been misspelled Skat. It may be from the Arabic word ši'at "a wish". This system has an apparent visual magnitude of a mean apparent magnitude of +4.57. Based upon parallax measurements, it is located at a distance of roughly 780 light-years (240 parsecs) from Earth.This is a binary star system with an orbital period of 84.1 ± 0.004. The primary component is a B-type main sequence star with a stellar classification of B1 Ve. This is a large star with nearly eleven times the mass and over six times the radius of the Sun. Pi Aquarii shines about 7,300 times as brightly as the Sun. This energy is being radiated from its outer atmosphere at an effective temperature of 27,094, giving it the blue-hued glow of a B-type star. It is spinning rapidly with a projected rotational velocity of 215 km/s.Pi Aquarii is notable for having undergone a transition from a Be star (showing hydrogen emission lines) into an ordinary B-type star. It is classified as a Gamma Cassiopeiae type variable star and its brightness varies from magnitude +4.45 to +4.71; a range of 0.28. The dominant variability period, 83.8 ± 0.8 days, is nearly the same as the orbital period.".
- Pi_Aquarii thumbnail Aquarius_IAU.svg?width=300.
- Pi_Aquarii wikiPageExternalLink AladinPreview?-c=22+25+16.6232%2B01+22+38.642&ident=*++52+Aqr&submit=Aladin+previewer.
- Pi_Aquarii wikiPageID "2859176".
- Pi_Aquarii wikiPageRevisionID "605624894".
- Pi_Aquarii appmagV "+4.66".
- Pi_Aquarii bV "–0.03".
- Pi_Aquarii class "B1 Ve".
- Pi_Aquarii constell Aquarius_(constellation).
- Pi_Aquarii epoch "J2000".
- Pi_Aquarii hasPhotoCollection Pi_Aquarii.
- Pi_Aquarii luminosity "7302".
- Pi_Aquarii pError "0.28".
- Pi_Aquarii parallax "4.17".
- Pi_Aquarii propMoDec "+2.41".
- Pi_Aquarii propMoRa "+17.83".
- Pi_Aquarii radialV "+4.0".
- Pi_Aquarii radius "6.2".
- Pi_Aquarii rotationalVelocity "215".
- Pi_Aquarii temperature "27094".
- Pi_Aquarii uB "–0.98".
- Pi_Aquarii variable Shell_star.
- Pi_Aquarii subject Category:Aquarius_(constellation).
- Pi_Aquarii subject Category:B-type_main-sequence_stars.
- Pi_Aquarii subject Category:Bayer_objects.
- Pi_Aquarii subject Category:Emission-line_stars.
- Pi_Aquarii subject Category:Flamsteed_objects.
- Pi_Aquarii subject Category:Henry_Draper_Catalogue_objects.
- Pi_Aquarii subject Category:Shell_stars.
- Pi_Aquarii subject Category:Stars_with_proper_names.
- Pi_Aquarii type B-typeMainSequenceStars.
- Pi_Aquarii type BayerObjects.
- Pi_Aquarii type CelestialBody109239740.
- Pi_Aquarii type Emission-lineStars.
- Pi_Aquarii type FlamsteedObjects.
- Pi_Aquarii type HenryDraperCatalogueObjects.
- Pi_Aquarii type NaturalObject100019128.
- Pi_Aquarii type Object100002684.
- Pi_Aquarii type PhysicalEntity100001930.
- Pi_Aquarii type ShellStars.
- Pi_Aquarii type Star109444100.
- Pi_Aquarii type StarsWithProperNames.
- Pi_Aquarii type Whole100003553.
- Pi_Aquarii type CelestialBody.
- Pi_Aquarii type Star.
- Pi_Aquarii type PhysicalBody.
- Pi_Aquarii comment "Pi Aquarii (π Aqr, π Aquarii) is the Bayer designation for a binary star in the equatorial constellation of Aquarius. It shares the traditional name Seat with Delta Aquarii, where it has long been misspelled Skat. It may be from the Arabic word ši'at "a wish". This system has an apparent visual magnitude of a mean apparent magnitude of +4.57.".
- Pi_Aquarii label "Pi Aquarii".
- Pi_Aquarii label "Pi Aquarii".
- Pi_Aquarii label "Pi Aquarii".
- Pi_Aquarii label "Seat (estrella)".
- Pi_Aquarii sameAs Seat_(estrella).
- Pi_Aquarii sameAs Pi_Aquarii.
- Pi_Aquarii sameAs Pi_Aquarii.
- Pi_Aquarii sameAs 물병자리_파이.
- Pi_Aquarii sameAs Pi_Aquarii.
- Pi_Aquarii sameAs m.087b74.
- Pi_Aquarii sameAs Q1194554.
- Pi_Aquarii sameAs Q1194554.
- Pi_Aquarii sameAs Pi_Aquarii.
- Pi_Aquarii wasDerivedFrom Pi_Aquarii?oldid=605624894.
- Pi_Aquarii depiction Aquarius_IAU.svg.
- Pi_Aquarii isPrimaryTopicOf Pi_Aquarii.
- Pi_Aquarii name "Pi Aquarii".