Binary and Multiple Stars, Part 5
42 entries in the Binary and Multiple Stars, Part 5 compendium.
Pi SculptorisAn aging giant star in Sculptor, possibly part of a binary system.Psi ScorpiiA white binary star in Scorpius with a directly detected companion.Rho PegasiA probable astrometric binary with a white A-type primary.Rho3 ArietisAn astrometric binary in Aries, faintly visible to the naked eye.Sigma AquariiA white subgiant star in Aquarius, possibly an astrometric binary.Sigma CetiA hierarchical triple star system in Cetus.Tau Coronae BorealisA possible binary star in Corona Borealis.Theta ApodisA high-proper-motion red giant with a variable brightness and a binary companion.Theta CirciniA binary Be star system in Circinus with Gamma Cassiopeiae variability.Upsilon SerpentisA-type main-sequence star in Serpens, suspected astrometric binary.Upsilon1 CassiopeiaeA naked-eye astrometric binary in Cassiopeia, 330 light years away.Xi TauriA hierarchical quadruple system with eclipsing and spectroscopic components.Xi2 Canis MajorisA white-hued binary star system in Canis Major.Xi2 SagittariiA naked-eye astrometric binary in Sagittarius, also known as Jian.2MASS J11011926−7732383First brown dwarf binary found with separation over 20 au.2M1510A triple brown dwarf system with an eclipsing binary and a planet candidate.2MASS J05352184−0546085First eclipsing binary brown dwarf system discovered.2MASSW J0920122+351742Triple brown dwarf system with a highly inclined orbit.81 CancriA multiple system with a close binary and a brown dwarf binary.CFBDSIR J145829+101343Binary brown dwarf system with a Y0 companion among the coolest known.CWISEP J1935−1546Cold Y-dwarf binary with auroral methane emission.Epsilon IndiA nearby K-dwarf system with brown dwarfs and a Jovian planet.HD 130948A Sun-like star with two co-orbiting brown dwarfs.Kelu-1A binary brown dwarf system and prototype L dwarf.LP 261-75Triple system with a red dwarf and two brown dwarfs.Luhman 16Closest-known brown dwarf binary, third-nearest system to the Sun.Nu OphiuchiA K-type giant with two brown dwarfs in resonance.Oph 162225-240515Wide brown dwarf binary in Scorpius, first of its kind reported.SDSS J141624.08+134826.7A nearby wide binary of two brown dwarfs in Boötes.UScoCTIO 108A wide binary of two brown dwarfs in Upper Scorpius.VHS J1256−1257A triple brown dwarf system with a highly variable planetary-mass companion.WISE 0146+4234Binary brown dwarf at the T/Y transition in Andromeda.WISE 0458+6434Binary ultracool brown dwarfs, first WISE-discovered brown dwarf.WISE 0535−7500Possible binary Y1 brown dwarf system in Mensa.WISE 1217+1626Binary brown dwarf system of spectral types T9 and Y0.WISE 2150−7520A wide binary brown dwarf system in Octans.WISE J0336−0143Binary Y-type brown dwarfs with masses near the deuterium fusion threshold.WISEPA J101905.63+652954.2Binary cold brown dwarfs with pulsed radio auroral emission.WISEPA J184124.74+700038.0One of the first known binary brown dwarf systems.ZTF J1239+8347First mass-transferring binary brown dwarf system discovered.Low-mass X-ray binaryBinary systems where a compact object accretes from a low-mass star.BV CentauriA dwarf nova with an unusually long period and anomalous outbursts.
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