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- 32_Cygni abstract "32 Cygni (32 Cyg, Omicron2 Cyg, ο2 Cyg) is the Flamsteed designation for a binary star system in the Cygnus constellation. It is a 4th magnitude star, which can be seen with the naked eye under suitably dark skies. Parallax measurements give an estimated distance of 1,100 light-years (320 parsecs) from the Earth. However, Schröder et al. (2007) suggest the actual value, after correcting for Malmquist bias, may be closer to 1,174 light-years (360 parsecs).The primary component in this system, 32 Cygni A, has a stellar classification of K4–5 Ib, indicating that it is a lower luminosity supergiant star. Its effective temperature of 3,840 K lies in the range for K-type stars, giving it an orange hue. This star has more four than times the mass of the Sun and the outer envelope has expanded to about 184 times the Sun's radius. It is radiating 6,600 times the luminosity of the Sun.The companion star, 32 Cygni B, is smaller than the primary, with four times the Sun's mass and three times the Sun's radius. It has a much higher effective temperature of 16,200 K and is radiating over 300 times the Sun's luminosity. This star has the blue-white hue of a B-type star, with a stellar classification of B6–7 IV–V. The luminosity class 'IV–V' fits a star that has nearly exhausted the hydrogen at its core and begun to evolve off the main sequence to become a subgiant star.The two stars form an eclipsing binary system (variable star designation: V1488 Cyg) similar to Algol. The orbital plane of the two stars is nearly aligned with the line of sight from the Earth, so that the giant star eclipses the secondary component once per orbit. During an eclipse, emission lines can be seen in the spectrum of this system. These originate in the stellar wind escaping from the giant star. In a volume around the B star, this wind becomes ionized, resulting in a circumstellar H II region. The giant star is losing mass at the rate of 1.3 × 10−8 times the mass of the Sun per year, or the equivalent of the Sun's mass every 77 million years.".
- 32_Cygni thumbnail Cygnus_IAU.svg?width=300.
- 32_Cygni wikiPageExternalLink 32-cygni.shtml.
- 32_Cygni wikiPageID "16774850".
- 32_Cygni wikiPageLength "9381".
- 32_Cygni wikiPageOutDegree "45".
- 32_Cygni wikiPageRevisionID "701437243".
- 32_Cygni wikiPageWikiLink Algol.
- 32_Cygni wikiPageWikiLink Bayer_designation.
- 32_Cygni wikiPageWikiLink Binary_star.
- 32_Cygni wikiPageWikiLink Bortle_scale.
- 32_Cygni wikiPageWikiLink Bright_Star_Catalogue.
- 32_Cygni wikiPageWikiLink Category:Algol_variables.
- 32_Cygni wikiPageWikiLink Category:B-type_subgiants.
- 32_Cygni wikiPageWikiLink Category:Bayer_objects.
- 32_Cygni wikiPageWikiLink Category:Cygnus_(constellation).
- 32_Cygni wikiPageWikiLink Category:Flamsteed_objects.
- 32_Cygni wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- 32_Cygni wikiPageWikiLink Category:K-type_supergiants.
- 32_Cygni wikiPageWikiLink Constellation.
- 32_Cygni wikiPageWikiLink Cygnus_(constellation).
- 32_Cygni wikiPageWikiLink Durchmusterung.
- 32_Cygni wikiPageWikiLink Effective_temperature.
- 32_Cygni wikiPageWikiLink Flamsteed_designation.
- 32_Cygni wikiPageWikiLink H_II_region.
- 32_Cygni wikiPageWikiLink Henry_Draper_Catalogue.
- 32_Cygni wikiPageWikiLink Hipparcos.
- 32_Cygni wikiPageWikiLink Ion.
- 32_Cygni wikiPageWikiLink Light-year.
- 32_Cygni wikiPageWikiLink Main_sequence.
- 32_Cygni wikiPageWikiLink Malmquist_bias.
- 32_Cygni wikiPageWikiLink Minute_and_second_of_arc.
- 32_Cygni wikiPageWikiLink Orbital_plane_(astronomy).
- 32_Cygni wikiPageWikiLink Parallax.
- 32_Cygni wikiPageWikiLink Parsec.
- 32_Cygni wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- 32_Cygni wikiPageWikiLink Solar_luminosity.
- 32_Cygni wikiPageWikiLink Solar_mass.
- 32_Cygni wikiPageWikiLink Solar_radius.
- 32_Cygni wikiPageWikiLink Spectral_line.
- 32_Cygni wikiPageWikiLink Stellar_classification.
- 32_Cygni wikiPageWikiLink Stellar_wind.
- 32_Cygni wikiPageWikiLink Subgiant.
- 32_Cygni wikiPageWikiLink Supergiant.
- 32_Cygni wikiPageWikiLink Variable_star_designation.
- 32_Cygni wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- 32_Cygni wikiPageWikiLink File:Cygnus_IAU.svg.
- 32_Cygni wikiPageWikiLinkText "32 Cygni".
- 32_Cygni age "Under 20 million".
- 32_Cygni appmagV "3.98".
- 32_Cygni axisUnitless Minute_and_second_of_arc.
- 32_Cygni axisUnitless "5.5".
- 32_Cygni bV "+1.52".
- 32_Cygni class "K4–5 Ib + B6–7 IV–V".
- 32_Cygni component "32".
- 32_Cygni constell Cygnus_(constellation).
- 32_Cygni eccentricity "0.3".
- 32_Cygni epoch "J2000".
- 32_Cygni gravity "0.78".
- 32_Cygni inclination "65.5".
- 32_Cygni luminosity "302".
- 32_Cygni luminosity "6600".
- 32_Cygni mass "4.13".
- 32_Cygni mass "7.45".
- 32_Cygni metalFe "–0.43".
- 32_Cygni name "32".
- 32_Cygni pError "0.6".
- 32_Cygni parallax "3.08".
- 32_Cygni periarg "218.2".
- 32_Cygni periastron "2433141.8".
- 32_Cygni periodUnitless "9.916992E7".
- 32_Cygni propMoDec "+2.33".
- 32_Cygni propMoRa "+5.30".
- 32_Cygni radialV "-14.4".
- 32_Cygni radius "184".
- 32_Cygni radius "3".
- 32_Cygni temperature "16200".
- 32_Cygni temperature "3840".
- 32_Cygni uB "+1.03".
- 32_Cygni variable "Eclipsing binary".
- 32_Cygni wikiPageUsesTemplate Template:DEC.
- 32_Cygni wikiPageUsesTemplate Template:RA.
- 32_Cygni wikiPageUsesTemplate Template:Reflist.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_astrometry.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_begin.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_catalog.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_character.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_detail.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_end.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_image.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_observe.
- 32_Cygni wikiPageUsesTemplate Template:Starbox_orbit.
- 32_Cygni wikiPageUsesTemplate Template:Stars_of_Cygnus.
- 32_Cygni subject Category:Algol_variables.
- 32_Cygni subject Category:B-type_subgiants.
- 32_Cygni subject Category:Bayer_objects.
- 32_Cygni subject Category:Cygnus_(constellation).
- 32_Cygni subject Category:Flamsteed_objects.
- 32_Cygni subject Category:Henry_Draper_Catalogue_objects.
- 32_Cygni subject Category:K-type_supergiants.