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- Rho1_Arae abstract "Rho1 Arae is the Bayer designation for a star in the southern constellation of Ara. Unusually for a star with a Bayer designation, it was not catalogued by Bayer in his Uranometria. It was instead first catalogued by Nicolas Lacaille, in his Coelum Australe Stelliferum published in 1763. This star gained the Bayer designation of Rho1 Arae in Bode's Uranographia, published in 1801. Rho1 Arae is one of the dimmest stars with a Bayer designation, having an apparent visual magnitude of just +6.275 According to the Bortle Dark-Sky Scale, this means the star is just barely visible to the naked eye in dark rural skies. Based upon parallax measurements, it is about 640 light-years (200 parsecs) distant from the Sun, give or take a 50 light-year margin of error.This is a spectroscopic binary system, which means that the presence of an orbiting companion is indicated by shifts in the spectrum. However, because the primary component is spinning rapidly with a projected rotational velocity of 370 ± 10, it is difficult to obtain reliable orbital elements. The orbital period has been estimated at 0.439 days. The spectrum of this system matches a stellar classification of B3 Vnpe, which may indicate the primary is a B-type main sequence star. The 'e' suffix indicates the presence of emission lines, indicating this is a Be star. For Rho1 Arae, the emission lines are prominent and variable.Rho1 Arae has a peculiar velocity of 27.4 ± 4.9 km/s relative to its neighbors, making it a runaway star system. A scenario that it was ejected from the Scorpius-Centaurus OB association as a result of a past supernova explosion seems unlikely because of its binarity.".
- Rho1_Arae thumbnail Ara_IAU.svg?width=300.
- Rho1_Arae wikiPageExternalLink AladinPreview?-c=16+56+08.8405-50+40+29.244&ident=V*+V846+Ara&submit=Aladin+previewer.
- Rho1_Arae wikiPageExternalLink VizieR-S?HIP%2082868.
- Rho1_Arae wikiPageExternalLink VizieR-S?HR%206274.
- Rho1_Arae wikiPageID "35831510".
- Rho1_Arae wikiPageLength "7721".
- Rho1_Arae wikiPageOutDegree "44".
- Rho1_Arae wikiPageRevisionID "649626499".
- Rho1_Arae wikiPageWikiLink Apparent_magnitude.
- Rho1_Arae wikiPageWikiLink Apparent_visual_magnitude.
- Rho1_Arae wikiPageWikiLink Ara_(constellation).
- Rho1_Arae wikiPageWikiLink B(e)_star.
- Rho1_Arae wikiPageWikiLink B-type_main-sequence_star.
- Rho1_Arae wikiPageWikiLink B-type_main_sequence_star.
- Rho1_Arae wikiPageWikiLink Bayer_designation.
- Rho1_Arae wikiPageWikiLink Be_star.
- Rho1_Arae wikiPageWikiLink Binary_star.
- Rho1_Arae wikiPageWikiLink Bortle_Dark-Sky_Scale.
- Rho1_Arae wikiPageWikiLink Bortle_scale.
- Rho1_Arae wikiPageWikiLink Boss_General_Catalogue.
- Rho1_Arae wikiPageWikiLink Bright_Star_Catalogue.
- Rho1_Arae wikiPageWikiLink Category:Ara_(constellation).
- Rho1_Arae wikiPageWikiLink Category:Bayer_objects.
- Rho1_Arae wikiPageWikiLink Category:Emission-line_stars.
- Rho1_Arae wikiPageWikiLink Category:HR_objects.
- Rho1_Arae wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Rho1_Arae wikiPageWikiLink Category:Hipparcos_objects.
- Rho1_Arae wikiPageWikiLink Category:Objects_named_with_variable_star_designations.
- Rho1_Arae wikiPageWikiLink Constellation.
- Rho1_Arae wikiPageWikiLink Durchmusterung.
- Rho1_Arae wikiPageWikiLink Emission_line.
- Rho1_Arae wikiPageWikiLink Henry_Draper_Catalogue.
- Rho1_Arae wikiPageWikiLink Hipparcos.
- Rho1_Arae wikiPageWikiLink Hipparcos_Catalogue.
- Rho1_Arae wikiPageWikiLink Johann_Bayer.
- Rho1_Arae wikiPageWikiLink Johann_Elert_Bode.
- Rho1_Arae wikiPageWikiLink Lacaille.
- Rho1_Arae wikiPageWikiLink Margin_of_error.
- Rho1_Arae wikiPageWikiLink New_Catalogue_of_Suspected_Variable_Stars.
- Rho1_Arae wikiPageWikiLink Nicolas_Louis_de_Lacaille.
- Rho1_Arae wikiPageWikiLink Orbital_elements.
- Rho1_Arae wikiPageWikiLink Orbital_period.
- Rho1_Arae wikiPageWikiLink Parallax.
- Rho1_Arae wikiPageWikiLink Peculiar_velocity.
- Rho1_Arae wikiPageWikiLink Projected_rotational_velocity.
- Rho1_Arae wikiPageWikiLink Runaway_star.
- Rho1_Arae wikiPageWikiLink Scorpius-Centaurus_Association.
- Rho1_Arae wikiPageWikiLink Scorpius–Centaurus_Association.
- Rho1_Arae wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- Rho1_Arae wikiPageWikiLink Spectral_line.
- Rho1_Arae wikiPageWikiLink Spectroscopic_binary.
- Rho1_Arae wikiPageWikiLink Spectrum.
- Rho1_Arae wikiPageWikiLink Star.
- Rho1_Arae wikiPageWikiLink Stellar_classification.
- Rho1_Arae wikiPageWikiLink Stellar_kinematics.
- Rho1_Arae wikiPageWikiLink Stellar_rotation.
- Rho1_Arae wikiPageWikiLink Supernova.
- Rho1_Arae wikiPageWikiLink Uranographia.
- Rho1_Arae wikiPageWikiLink Uranometria.
- Rho1_Arae wikiPageWikiLink File:Ara_IAU.svg.
- Rho1_Arae wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Rho1_Arae wikiPageWikiLinkText "Rho1 Arae".
- Rho1_Arae wikiPageWikiLinkText "ρ¹ Arae".
- Rho1_Arae ageMyr "18.4".
- Rho1_Arae appmagV "6.275".
- Rho1_Arae bV "+0.008".
- Rho1_Arae class "B3 Vnpe".
- Rho1_Arae constell Ara_(constellation).
- Rho1_Arae epoch "J2000".
- Rho1_Arae gravity "3.75".
- Rho1_Arae hasPhotoCollection Rho1_Arae.
- Rho1_Arae luminosity "1418".
- Rho1_Arae mass "6.3".
- Rho1_Arae pError "0.39".
- Rho1_Arae parallax "5.06".
- Rho1_Arae propMoDec "–9.79".
- Rho1_Arae propMoRa "–7.66".
- Rho1_Arae radialV "+19".
- Rho1_Arae rotationalVelocity "370".
- Rho1_Arae temperature "19800".
- Rho1_Arae uB "–0.691".
- Rho1_Arae wikiPageUsesTemplate Template:Convert.
- Rho1_Arae wikiPageUsesTemplate Template:Reflist.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_astrometry.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_begin.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_catalog.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_character.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_detail.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_end.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_image.
- Rho1_Arae wikiPageUsesTemplate Template:Starbox_observe.
- Rho1_Arae wikiPageUsesTemplate Template:Stars_of_Ara.
- Rho1_Arae subject Category:Ara_(constellation).
- Rho1_Arae subject Category:Bayer_objects.
- Rho1_Arae subject Category:Emission-line_stars.
- Rho1_Arae subject Category:HR_objects.
- Rho1_Arae subject Category:Henry_Draper_Catalogue_objects.
- Rho1_Arae subject Category:Hipparcos_objects.
- Rho1_Arae subject Category:Objects_named_with_variable_star_designations.