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- 21_Arietis abstract "21 Arietis is the Flamsteed designation for a binary star system in the northern constellation of Aries. It has a combined apparent visual magnitude is 5.57; the brighter member is magnitude 6.40 while the fainter star is magnitude 6.48. The distance to this star system, based upon an annual parallax shift of 19.58 mas, is 167 light-years (51 parsecs). The pair orbit each other with a period of 23.70 years and an eccentricity of 0.68.".
- 21_Arietis wikiPageExternalLink AladinPreview?-c=02+15+42.7773%2B25+02+34.956&ident=CCDM+J02157%2B2503AB&submit=Aladin+previewer.
- 21_Arietis wikiPageExternalLink VizieR-S?CCDM%20J02157%2b2503AB.
- 21_Arietis wikiPageExternalLink VizieR-S?HR%20657.
- 21_Arietis wikiPageID "2902751".
- 21_Arietis wikiPageRevisionID "602138591".
- 21_Arietis absmagV "2.03".
- 21_Arietis ageGyr "2.2".
- 21_Arietis appmagV "5.57".
- 21_Arietis bV "+0.50".
- 21_Arietis class "F6 V".
- 21_Arietis component "21".
- 21_Arietis constell Aries_(constellation).
- 21_Arietis epoch "J2000".
- 21_Arietis gravity "4.12".
- 21_Arietis hasPhotoCollection 21_Arietis.
- 21_Arietis metalFe "+0.02".
- 21_Arietis pError "0.61".
- 21_Arietis parallax "19.58".
- 21_Arietis propMoDec "–86.42".
- 21_Arietis propMoRa "–89.72".
- 21_Arietis radialV "–44.3".
- 21_Arietis rotationalVelocity "12.6".
- 21_Arietis temperature "6299".
- 21_Arietis uB "+0.00".
- 21_Arietis subject Category:Aries_(constellation).
- 21_Arietis subject Category:Binary_stars.
- 21_Arietis subject Category:F-type_main-sequence_stars.
- 21_Arietis subject Category:Flamsteed_objects.
- 21_Arietis subject Category:Henry_Draper_Catalogue_objects.
- 21_Arietis subject Category:Hipparcos_objects.
- 21_Arietis subject Category:Solar-type_stars.
- 21_Arietis type CelestialBody.
- 21_Arietis type Star.
- 21_Arietis type PhysicalBody.
- 21_Arietis comment "21 Arietis is the Flamsteed designation for a binary star system in the northern constellation of Aries. It has a combined apparent visual magnitude is 5.57; the brighter member is magnitude 6.40 while the fainter star is magnitude 6.48. The distance to this star system, based upon an annual parallax shift of 19.58 mas, is 167 light-years (51 parsecs). The pair orbit each other with a period of 23.70 years and an eccentricity of 0.68.".
- 21_Arietis label "21 Arietis".
- 21_Arietis label "21 Arietis".
- 21_Arietis label "白羊座21".
- 21_Arietis sameAs 21_Arietis.
- 21_Arietis sameAs m.08bd7n.
- 21_Arietis sameAs Q2401491.
- 21_Arietis sameAs Q2401491.
- 21_Arietis wasDerivedFrom 21_Arietis?oldid=602138591.
- 21_Arietis isPrimaryTopicOf 21_Arietis.
- 21_Arietis name "21 Arietis".