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- HD_120987 abstract "HD 120987 (y Cen or y Centauri) is a star located in the constellation Centaurus. HD 120987 is a quintuple star system located 50 pc (163 light years) from the Sun. The system is located at RA 13h 53m 32.8s, and Dec -35 deg 39 arcmin 51 arcsec. The entire system has an apparent visual magnitude of +5.54, and an absolute magnitude of +2.03. The system is both a visual and spectroscopic binary. The system is centered on the AB component, which contains two F4V dwarf stars, with 3 other stars further out.HD 120987 A is the primary, an F4V dwarf of apparent visual magnitude +6.2, and absolute visual magnitude of +2.7. The star has an effective temperature of 6900 Kelvin and is 1.5 solar masses.HD 120987 B is an F4V dwarf of apparent visual magnitude +6.4, and absolute visual magnitude of +2.9. The star has a mass of 1.5 solar masses, and effective temperature 6900 Kelvin. The star is a spectroscopic binary with HD 120987 A, and was first discovered by AH Howe, in 1889. The angular separation is less than one arcsec. HD 120987 AB orbit each other with a true separation of approximately 0.8 AU.HD 120987 C is a white dwarf of apparent visual magnitude of +12.5. HD 120987 AC orbits the AB pair with angular separation of 27.5 arcsec. The star was first discovered by SW Burnham. HD 120987 AC orbits the AB pair at a distance of 24 AUs, less than the distance of Uranus from the Sun.HD 120987 D is a white dwarf of apparent visual magnitude of +14.5. y Centuari AD orbits the AB pair with angular separation of 30 arcsec. The star was first discovered by Robert T.A. Innes. HD 120987 AD orbits the AB pair at a distance of about 26 AUs, within the orbit of Neptune.HD 120987 E is located 66 arcsec from the primary. It has an apparent visual magnitude of 8.51, and was first discovered by William Herschel. It is a visual binary to HD 120987 A, and was the first component of the quintuple system discovered. HD 120987 AE orbits the AB pair at a distance of 57 AUs, or about twice the distance of Neptune from the Sun.".
- HD_120987 wikiPageExternalLink starview?object_type=1&object_id=3204.
- HD_120987 wikiPageExternalLink sim-basic?Ident=HD+120987&submit=SIMBAD+search.
- HD_120987 wikiPageExternalLink sim-id?Ident=%402228202&Name=CD-35%20%209089&submit=submit.
- HD_120987 wikiPageExternalLink sim-id?Ident=%402228204&Name=CD-35%20%209090C&submit=submit.
- HD_120987 wikiPageExternalLink sim-id?Ident=%402228205&Name=CD-35%20%209090D&submit=submit.
- HD_120987 wikiPageExternalLink search.pl?object=HR5222.
- HD_120987 wikiPageID "36021288".
- HD_120987 wikiPageLength "2955".
- HD_120987 wikiPageOutDegree "23".
- HD_120987 wikiPageRevisionID "630263035".
- HD_120987 wikiPageWikiLink Absolute_magnitude.
- HD_120987 wikiPageWikiLink Binary_star.
- HD_120987 wikiPageWikiLink Category:Bayer_objects.
- HD_120987 wikiPageWikiLink Category:Centaurus_(constellation).
- HD_120987 wikiPageWikiLink Category:F-type_main-sequence_stars.
- HD_120987 wikiPageWikiLink Category:HR_objects.
- HD_120987 wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- HD_120987 wikiPageWikiLink Centaurus.
- HD_120987 wikiPageWikiLink Constellation.
- HD_120987 wikiPageWikiLink Dwarf_star.
- HD_120987 wikiPageWikiLink Kelvin.
- HD_120987 wikiPageWikiLink Light-year.
- HD_120987 wikiPageWikiLink Minute_and_second_of_arc.
- HD_120987 wikiPageWikiLink Neptune.
- HD_120987 wikiPageWikiLink Robert_T._A._Innes.
- HD_120987 wikiPageWikiLink Solar_mass.
- HD_120987 wikiPageWikiLink Star.
- HD_120987 wikiPageWikiLink Star_system.
- HD_120987 wikiPageWikiLink Sun.
- HD_120987 wikiPageWikiLink Uranus.
- HD_120987 wikiPageWikiLink White_dwarf.
- HD_120987 wikiPageWikiLink William_Herschel.
- HD_120987 wikiPageWikiLinkText "HD 120987".
- HD_120987 wikiPageWikiLinkText "y Cen".
- HD_120987 wikiPageUsesTemplate Template:About.
- HD_120987 wikiPageUsesTemplate Template:Stars_of_Centaurus.
- HD_120987 subject Category:Bayer_objects.
- HD_120987 subject Category:Centaurus_(constellation).
- HD_120987 subject Category:F-type_main-sequence_stars.
- HD_120987 subject Category:HR_objects.
- HD_120987 subject Category:Henry_Draper_Catalogue_objects.
- HD_120987 hypernym Star.
- HD_120987 type Star.
- HD_120987 comment "HD 120987 (y Cen or y Centauri) is a star located in the constellation Centaurus. HD 120987 is a quintuple star system located 50 pc (163 light years) from the Sun. The system is located at RA 13h 53m 32.8s, and Dec -35 deg 39 arcmin 51 arcsec. The entire system has an apparent visual magnitude of +5.54, and an absolute magnitude of +2.03. The system is both a visual and spectroscopic binary.".
- HD_120987 label "HD 120987".
- HD_120987 sameAs Q5097802.
- HD_120987 sameAs m.0j_342t.
- HD_120987 sameAs Q5097802.
- HD_120987 sameAs HD_120987.
- HD_120987 wasDerivedFrom HD_120987?oldid=630263035.
- HD_120987 isPrimaryTopicOf HD_120987.