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- HD_84810 abstract "HD 84810, also known as l Carinae (l Car), is a star in the southern constellation of Carina. It has a mean apparent magnitude of +3.4, making it readily visible to the naked eye and one of the brighter members of Carina. Based upon parallax measurements, it is approximately 1,600 light-years (490 parsecs) from Earth.From the characteristics of its spectrum, l Carinae has a stellar classification of G5 Iab/Ib. This indicates the star has reached a stage in its evolution where it has expanded to become a supergiant with 169 times the radius of the Sun. As this is a massive star with 8–13 times the mass of the Sun, it rapidly burns through its supply of nuclear fuel and has become a supergiant in roughly 33 million years, after spending 15–17 million years as a main sequence star.l Carinae is classified as a Cepheid variable star and its brightness varies over an amplitude range of 0.725 in magnitude with a long period of 35.560 days. The radial velocity of the star likewise varies by 39 km/s during each pulsation cycle. It has a compact circumstellar envelope that can be discerned using interferometery. The envelope has been resolved at an infrared wavelength of 10μm, showing a radius of 10–100 AU at a mean temperature of 100 K. The material for this envelope was supplied by mass ejected from the central star.".
- HD_84810 wikiPageID "5065696".
- HD_84810 wikiPageRevisionID "601528892".
- HD_84810 appmagV "3.39".
- HD_84810 bV "+1.03".
- HD_84810 class "G5 Iab/Ib".
- HD_84810 constell Carina_(constellation).
- HD_84810 epoch Epoch_(astronomy).
- HD_84810 equino Epoch_(astronomy).
- HD_84810 gravity "1.5".
- HD_84810 hasPhotoCollection HD_84810.
- HD_84810 mass "8.4".
- HD_84810 metalFe "0.3".
- HD_84810 pError "0.29".
- HD_84810 parallax "2.09".
- HD_84810 propMoDec "+8.19".
- HD_84810 propMoRa "–12.88".
- HD_84810 radialV "+3.3".
- HD_84810 temperature "5091".
- HD_84810 uB "+0.76".
- HD_84810 variable Cepheid_variable.
- HD_84810 subject Category:Bayer_objects.
- HD_84810 subject Category:Carina_(constellation).
- HD_84810 subject Category:Cepheid_variables.
- HD_84810 subject Category:G-type_supergiants.
- HD_84810 subject Category:Henry_Draper_Catalogue_objects.
- HD_84810 type CelestialBody.
- HD_84810 type Star.
- HD_84810 type PhysicalBody.
- HD_84810 comment "HD 84810, also known as l Carinae (l Car), is a star in the southern constellation of Carina. It has a mean apparent magnitude of +3.4, making it readily visible to the naked eye and one of the brighter members of Carina. Based upon parallax measurements, it is approximately 1,600 light-years (490 parsecs) from Earth.From the characteristics of its spectrum, l Carinae has a stellar classification of G5 Iab/Ib.".
- HD_84810 label "HD 84810".
- HD_84810 label "HD 84810".
- HD_84810 label "HD 84810".
- HD_84810 label "HD 84810".
- HD_84810 label "HD 84810".
- HD_84810 label "海石四".
- HD_84810 sameAs HD_84810.
- HD_84810 sameAs HD_84810.
- HD_84810 sameAs HD_84810.
- HD_84810 sameAs m.0d158y.
- HD_84810 sameAs Q2715955.
- HD_84810 sameAs Q2715955.
- HD_84810 wasDerivedFrom HD_84810?oldid=601528892.
- HD_84810 isPrimaryTopicOf HD_84810.
- HD_84810 name "l Carinae".