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- BD_-22°5866 abstract "BD -22°5866 is a quadruple-star system located 166 light years from Earth. The four stars are each about half the mass of the Sun and are approximately 500 million years old. The system is unusual in how closely the four stars are orbiting each other; one pair has an orbital separation of at most .06 AU and an orbital period of under five days, the other pair has a separation of at most .26 AU and a period of about 55 days, and the two pairs are separated by 5.8 AU and have an orbital period of less than nine years.Since current theories of star formation indicate that stars like these could not form in such close proximity to each other, a favored explanation is that there may have been a single gaseous disk that forced them into such small orbits within the first 100,000 years of their evolution. The two pairs are currently moving farther apart due to tidal interaction, indicating that they were once even more closely associated than today.".
- BD_-22°5866 wikiPageID "15167648".
- BD_-22°5866 wikiPageRevisionID "569344959".
- BD_-22°5866 absmagV "12.3".
- BD_-22°5866 appmagV "10.1".
- BD_-22°5866 class "K5".
- BD_-22°5866 constell Aquarius_(constellation).
- BD_-22°5866 dec "-21".
- BD_-22°5866 epoch "J2000".
- BD_-22°5866 propMoDec "193".
- BD_-22°5866 propMoRa "161.7".
- BD_-22°5866 ra "80078.364".
- BD_-22°5866 simbad "BD+-22+5866".
- BD_-22°5866 variable "None".
- BD_-22°5866 subject Category:Aquarius_(constellation).
- BD_-22°5866 subject Category:Durchmusterung_objects.
- BD_-22°5866 subject Category:K-type_stars.
- BD_-22°5866 subject Category:Multiple_star_systems.
- BD_-22°5866 type CelestialBody.
- BD_-22°5866 type Star.
- BD_-22°5866 type PhysicalBody.
- BD_-22°5866 comment "BD -22°5866 is a quadruple-star system located 166 light years from Earth. The four stars are each about half the mass of the Sun and are approximately 500 million years old.".
- BD_-22°5866 label "BD -22°5866".
- BD_-22°5866 label "BD-22 5866".
- BD_-22°5866 label "BD−22°5866".
- BD_-22°5866 sameAs BD_-22%C2%B05866.
- BD_-22°5866 sameAs BD-22_5866.
- BD_-22°5866 sameAs Q2443665.
- BD_-22°5866 sameAs Q2443665.
- BD_-22°5866 wasDerivedFrom BD_-22°5866?oldid=569344959.