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- Theta_Aurigae abstract "Theta Aurigae (θ Aur, θ Aurigae) is a binary star in the constellation Auriga. Rarely used proper names for this star include Mahasim, the latter from the Arabic المِعْصَم al-micşam "wrist" (of the charioteer), which was also used for Eta Aurigae. It is known as 五車四 (the Fourth Star of the Five Chariots) in Chinese. Based upon parallax measurements, the distance to this star is about 166 light-years (51 parsecs).The primary component is a large star with more than three times the mass of the Sun and over five times the Sun's radius. It is radiating 263 times the Sun's luminosity from its outer atmosphere at an effective temperature of 10,400 K, giving it the white hue of an A-type star. The star has a stellar classification of A0pSi, with the 'pSi' suffix indicating it is a chemically peculiar star with an abnormal abundance of silicon.The primary is classified an Alpha2 Canum Venaticorum type variable star and has a surface magnetic field of about 1 kG. Its projected rotational velocity is 55 km s−1, with the star completing a rotation in only 3.6 days. The axis of rotation is inclined by an angle of 51◦ ± 6 to the line of sight from the Earth.There is a +7.2 magnitude companion, 4.5 magnitudes fainter than the primary, located at an angular separation of 3.91 arcseconds along a position angle of 304.9° as of 2002. This is an F-type main sequence star with a stellar classification in the range F2-5 V. The mean combined apparent magnitude of the system is +2.65 but the variation of the primary causes the system's brightness ranges from magnitude +2.62 to +2.70 with a period of 1.37 days. The system is an X-ray source with a luminosity of 9.49 × 1026 erg s−1.".
- Theta_Aurigae thumbnail Auriga_IAU.svg?width=300.
- Theta_Aurigae wikiPageExternalLink AladinPreview?-c=V*+tet+Aur&ident=V*+tet+Aur&submit=Aladin+previewer.
- Theta_Aurigae wikiPageExternalLink VizieR-S?CCDM%20J05597%2b3713A.
- Theta_Aurigae wikiPageExternalLink VizieR-S?HR%202095.
- Theta_Aurigae wikiPageID "2890968".
- Theta_Aurigae wikiPageLength "8209".
- Theta_Aurigae wikiPageOutDegree "38".
- Theta_Aurigae wikiPageRevisionID "656907879".
- Theta_Aurigae wikiPageWikiLink A-type_star.
- Theta_Aurigae wikiPageWikiLink Alpha2_Canum_Venaticorum_variable.
- Theta_Aurigae wikiPageWikiLink Alpha²_Canum_Venaticorum_variable.
- Theta_Aurigae wikiPageWikiLink Angular_distance.
- Theta_Aurigae wikiPageWikiLink Angular_separation.
- Theta_Aurigae wikiPageWikiLink Arabic.
- Theta_Aurigae wikiPageWikiLink Arcsecond.
- Theta_Aurigae wikiPageWikiLink Auriga_(constellation).
- Theta_Aurigae wikiPageWikiLink Binary_star.
- Theta_Aurigae wikiPageWikiLink Bonner_Durchmusterung.
- Theta_Aurigae wikiPageWikiLink Bright_Star_Catalogue.
- Theta_Aurigae wikiPageWikiLink Category:A-type_main-sequence_stars.
- Theta_Aurigae wikiPageWikiLink Category:Alpha2_Canum_Venaticorum_variables.
- Theta_Aurigae wikiPageWikiLink Category:Auriga_(constellation).
- Theta_Aurigae wikiPageWikiLink Category:Bayer_objects.
- Theta_Aurigae wikiPageWikiLink Category:Binary_stars.
- Theta_Aurigae wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Theta_Aurigae wikiPageWikiLink Category:Hipparcos_objects.
- Theta_Aurigae wikiPageWikiLink Category:K-type_main-sequence_stars.
- Theta_Aurigae wikiPageWikiLink Category:Stars_with_proper_names.
- Theta_Aurigae wikiPageWikiLink Constellation.
- Theta_Aurigae wikiPageWikiLink Durchmusterung.
- Theta_Aurigae wikiPageWikiLink Effective_temperature.
- Theta_Aurigae wikiPageWikiLink Eta_Aurigae.
- Theta_Aurigae wikiPageWikiLink F-type_main-sequence_star.
- Theta_Aurigae wikiPageWikiLink F-type_main_sequence_star.
- Theta_Aurigae wikiPageWikiLink Five_Chariots.
- Theta_Aurigae wikiPageWikiLink Gauss_(unit).
- Theta_Aurigae wikiPageWikiLink Harvard_Revised_catalogue.
- Theta_Aurigae wikiPageWikiLink Henry_Draper_Catalogue.
- Theta_Aurigae wikiPageWikiLink Hipparcos.
- Theta_Aurigae wikiPageWikiLink Hipparcos_catalogue.
- Theta_Aurigae wikiPageWikiLink Minute_and_second_of_arc.
- Theta_Aurigae wikiPageWikiLink Parallax.
- Theta_Aurigae wikiPageWikiLink Peculiar_star.
- Theta_Aurigae wikiPageWikiLink Position_angle.
- Theta_Aurigae wikiPageWikiLink Projected_rotational_velocity.
- Theta_Aurigae wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- Theta_Aurigae wikiPageWikiLink Smithsonian_Astrophysical_Observatory_catalogue.
- Theta_Aurigae wikiPageWikiLink Stellar_classification.
- Theta_Aurigae wikiPageWikiLink Stellar_magnetic_field.
- Theta_Aurigae wikiPageWikiLink Stellar_rotation.
- Theta_Aurigae wikiPageWikiLink Variable_star.
- Theta_Aurigae wikiPageWikiLink File:Auriga_IAU.svg.
- Theta_Aurigae wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Theta_Aurigae wikiPageWikiLinkText "Mahasim".
- Theta_Aurigae wikiPageWikiLinkText "Theta Aurigae".
- Theta_Aurigae wikiPageWikiLinkText "θ Aur".
- Theta_Aurigae wikiPageWikiLinkText "θ Aurigae".
- Theta_Aurigae absmagV "–1.05".
- Theta_Aurigae appmagV "2.62".
- Theta_Aurigae bV "-0.08".
- Theta_Aurigae class "A0pSi + F2-5V".
- Theta_Aurigae constell Auriga_(constellation).
- Theta_Aurigae epoch "J2000".
- Theta_Aurigae gravity "3.6".
- Theta_Aurigae hasPhotoCollection Theta_Aurigae.
- Theta_Aurigae luminosity "263".
- Theta_Aurigae mass "3.38".
- Theta_Aurigae pError "0.16".
- Theta_Aurigae parallax "19.7".
- Theta_Aurigae propMoDec "-73.79".
- Theta_Aurigae propMoRa "+43.63".
- Theta_Aurigae rI "-0.06".
- Theta_Aurigae radialV "+29.5".
- Theta_Aurigae radius "5.1".
- Theta_Aurigae rotation "312655.68000000005".
- Theta_Aurigae rotationalVelocity "55".
- Theta_Aurigae temperature "10400".
- Theta_Aurigae uB "-0.18".
- Theta_Aurigae variable Alpha2_Canum_Venaticorum_variable.
- Theta_Aurigae variable Alpha²_Canum_Venaticorum_variable.
- Theta_Aurigae wikiPageUsesTemplate Template:Convert.
- Theta_Aurigae wikiPageUsesTemplate Template:Reflist.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_astrometry.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_begin.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_catalog.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_character.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_detail.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_end.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_image.
- Theta_Aurigae wikiPageUsesTemplate Template:Starbox_observe.
- Theta_Aurigae wikiPageUsesTemplate Template:Stars_of_Auriga.
- Theta_Aurigae subject Category:A-type_main-sequence_stars.
- Theta_Aurigae subject Category:Alpha2_Canum_Venaticorum_variables.
- Theta_Aurigae subject Category:Auriga_(constellation).
- Theta_Aurigae subject Category:Bayer_objects.
- Theta_Aurigae subject Category:Binary_stars.
- Theta_Aurigae subject Category:Henry_Draper_Catalogue_objects.
- Theta_Aurigae subject Category:Hipparcos_objects.
- Theta_Aurigae subject Category:K-type_main-sequence_stars.