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- 21_Aquilae abstract "21 Aquilae is the Flamsteed designation for a star in the equatorial constellation of Aquila. Its apparent magnitude is 5.14 and it is located at a distance of around 710 light-years (220 parsecs) from Earth, give or take a 40 light-year margin of error. The stellar classification of this star is B8 II-III, with the luminosity class of II-III suggesting that the spectrum displays elements of both a giant star and a bright giant. The outer atmosphere has an effective temperature of 13,175 K; this searing heat gives it the blue-white glow of a B-type star.".
- 21_Aquilae wikiPageExternalLink AladinPreview?-c=V*+V1288+Aql&ident=V*+V1288+Aql&submit=Aladin+previewer.
- 21_Aquilae wikiPageExternalLink VizieR-S?CCDM%20J19137%2b0218A.
- 21_Aquilae wikiPageExternalLink VizieR-S?HR%207287.
- 21_Aquilae wikiPageExternalLink VizieR-S?V*%20V1288%20Aql.
- 21_Aquilae wikiPageID "2902903".
- 21_Aquilae wikiPageRevisionID "601972568".
- 21_Aquilae appmagV "5.14".
- 21_Aquilae bV "–0.065".
- 21_Aquilae class "B8 II-III".
- 21_Aquilae constell Aquila_(constellation).
- 21_Aquilae epoch "J2000".
- 21_Aquilae gravity "3.27".
- 21_Aquilae hasPhotoCollection 21_Aquilae.
- 21_Aquilae metalFe "–0.14".
- 21_Aquilae pError "0.29".
- 21_Aquilae parallax "4.59".
- 21_Aquilae propMoDec "–3.28".
- 21_Aquilae propMoRa "+6.95".
- 21_Aquilae radialV "–5.2".
- 21_Aquilae radius "4.3".
- 21_Aquilae temperature "13175".
- 21_Aquilae uB "–0.399".
- 21_Aquilae variable Alpha²_Canum_Venaticorum_variable.
- 21_Aquilae subject Category:Alpha2_Canum_Venaticorum_variables.
- 21_Aquilae subject Category:Aquila_(constellation).
- 21_Aquilae subject Category:Henry_Draper_Catalogue_objects.
- 21_Aquilae subject Category:Objects_named_with_variable_star_designations.
- 21_Aquilae subject Category:Spectroscopic_binaries.
- 21_Aquilae type CelestialBody.
- 21_Aquilae type Star.
- 21_Aquilae type PhysicalBody.
- 21_Aquilae comment "21 Aquilae is the Flamsteed designation for a star in the equatorial constellation of Aquila. Its apparent magnitude is 5.14 and it is located at a distance of around 710 light-years (220 parsecs) from Earth, give or take a 40 light-year margin of error. The stellar classification of this star is B8 II-III, with the luminosity class of II-III suggesting that the spectrum displays elements of both a giant star and a bright giant.".
- 21_Aquilae label "21 Aquilae".
- 21_Aquilae label "21 Aquilae".
- 21_Aquilae label "天鷹座21".
- 21_Aquilae sameAs 21_Aquilae.
- 21_Aquilae sameAs m.08bf16.
- 21_Aquilae sameAs Q2608320.
- 21_Aquilae sameAs Q2608320.
- 21_Aquilae wasDerivedFrom 21_Aquilae?oldid=601972568.
- 21_Aquilae isPrimaryTopicOf 21_Aquilae.
- 21_Aquilae name "21 Aquilae".