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- ADS_9731 abstract "ADS 9731 is a star system that consists of six stars. Four of the stars are visually separate in the sky, forming a visual star system, which was resolved using adaptive optics in 1995. Two of these stars were themselves found to be spectroscopic binaries in 1998, resulting in a total of six known stars in the system. It is one of very few multiple star systems known to have at least six members. The components are organised thus: Aa and Ab are yellow-white main sequence stars of spectral types F4V and F5V and 1.35 and 1.32 solar masses respectively, which orbit each other every 3.27 days. This pair is in a 450-year orbit with star B, a star of spectral type G4V that has around the same mass as the Sun. Star C is a yellow white star of spectral type F3V around 1.41 times as massive as the sun, which has just started brightening and moving off the main sequence. It is in a 1000-year orbit with a pair of stars, Da and Db, a yellow-white main sequence star of spectral type F7V and a red dwarf of spectral type M3V. Da and Db take 14.28-days to orbit each other. Finally the system of stars C and Dab, and the system of stars Aab and B, take over 20,000 years to orbit each other.The combined light from the whole system results in an integrated V magnitude of 6.9. The parallax measured by the Hipparcos satellite indicates that the system is relatively nearby at around 110 parsecs (360 light-years) from the Sun. However, this distance is highly uncertain because the multiple stars in the system prevented Hipparcos from accurately measuring the parallax; the system may instead be at a distance of about 200 pc (650 ly).The star system has been considered as a possible target for direct imaging searches for exoplanets, but no planets have yet been detected in the system.".
- ADS_9731 wikiPageID "39995985".
- ADS_9731 wikiPageLength "7369".
- ADS_9731 wikiPageOutDegree "15".
- ADS_9731 wikiPageRevisionID "650703393".
- ADS_9731 wikiPageWikiLink Adaptive_optics.
- ADS_9731 wikiPageWikiLink Binary_star.
- ADS_9731 wikiPageWikiLink Category:Corona_Borealis_(constellation).
- ADS_9731 wikiPageWikiLink Category:F-type_main-sequence_stars.
- ADS_9731 wikiPageWikiLink Category:G-type_main-sequence_stars.
- ADS_9731 wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- ADS_9731 wikiPageWikiLink Category:Hipparcos_objects.
- ADS_9731 wikiPageWikiLink Category:M-type_main-sequence_stars.
- ADS_9731 wikiPageWikiLink Category:Multiple_star_systems.
- ADS_9731 wikiPageWikiLink Corona_Borealis.
- ADS_9731 wikiPageWikiLink Epoch_(astronomy).
- ADS_9731 wikiPageWikiLink Hipparcos.
- ADS_9731 wikiPageWikiLink Parallax.
- ADS_9731 wikiPageWikiLink Star_system.
- ADS_9731 wikiPageWikiLink Visual_binary.
- ADS_9731 wikiPageWikiLinkText "ADS 9731".
- ADS_9731 appmagV "6.9".
- ADS_9731 class "F4V, F5V, G4V, F3V, F7V, M3V?".
- ADS_9731 colwidth "25".
- ADS_9731 constell Corona_Borealis.
- ADS_9731 equinox Epoch_(astronomy).
- ADS_9731 pError "5.48".
- ADS_9731 parallax "9.07".
- ADS_9731 wikiPageUsesTemplate Template:Astronomy-stub.
- ADS_9731 wikiPageUsesTemplate Template:Convert.
- ADS_9731 wikiPageUsesTemplate Template:DEC.
- ADS_9731 wikiPageUsesTemplate Template:RA.
- ADS_9731 wikiPageUsesTemplate Template:Reflist.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_astrometry.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_begin.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_catalog.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_character.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_end.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_observe.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_orbit.
- ADS_9731 wikiPageUsesTemplate Template:Starbox_reference.
- ADS_9731 wikiPageUsesTemplate Template:Stars_of_Corona_Borealis.
- ADS_9731 subject Category:Corona_Borealis_(constellation).
- ADS_9731 subject Category:F-type_main-sequence_stars.
- ADS_9731 subject Category:G-type_main-sequence_stars.
- ADS_9731 subject Category:Henry_Draper_Catalogue_objects.
- ADS_9731 subject Category:Hipparcos_objects.
- ADS_9731 subject Category:M-type_main-sequence_stars.
- ADS_9731 subject Category:Multiple_star_systems.
- ADS_9731 hypernym System.
- ADS_9731 type CelestialBody.
- ADS_9731 type Place.
- ADS_9731 type Star.
- ADS_9731 type Catalogue.
- ADS_9731 type Redirect.
- ADS_9731 type Location.
- ADS_9731 type Place.
- ADS_9731 type Thing.
- ADS_9731 comment "ADS 9731 is a star system that consists of six stars. Four of the stars are visually separate in the sky, forming a visual star system, which was resolved using adaptive optics in 1995. Two of these stars were themselves found to be spectroscopic binaries in 1998, resulting in a total of six known stars in the system. It is one of very few multiple star systems known to have at least six members.".
- ADS_9731 label "ADS 9731".
- ADS_9731 sameAs Q5629288.
- ADS_9731 sameAs m.0ggb82v.
- ADS_9731 sameAs Q5629288.
- ADS_9731 wasDerivedFrom ADS_9731?oldid=650703393.
- ADS_9731 isPrimaryTopicOf ADS_9731.
- ADS_9731 name "ADS 9731".