A binary star (or binary star system) is a star system that contains two stars, usually locked in motion with each other by gravity. The orbits of planets and moons in a binary system are usually complex, with life in the vicinity adapted to the double stars' output.
A variation on this type of system is an optical binary, where two stars that are not otherwise in motion with each other, may appear to be companions because they fall along the same line-of-sight to a distant observer. In such cases the observer might assign names to the stars as if they were paired in a system, when in fact they are actually quite distant from each other.
Binary stars[]
This article or subsection has an associated category. | binary star systems |
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0-9[]
1 Centauri • 11 Leonis Minoris • 1440 Ophiuchi • 15 Sagittae • 15 Trianguli • 16 Cygni • 38 Lyncis • 39 Leonis • 4408 Trianguli • 47 Ursae Majoris • 51 Pegasi • 53 Aquarii • 58 Ophiuchi • 61 Cygni • 61 Virginis • 70 Virginis • 82 Eridani
A[]
Acamar • Achernar • Adhara • Adhil • Akritiri • Algorab • Alpha Andromedae • Alpha Caeli • Alpha Coronae Borealis • Alpha Draconis • Alpha Fornacis • Alpha Gruis • Alpha Hydri • Alpha Ophiuchi • Alpha Persei • Alpha Phoenicis • Alpha Trianguli • Alpha Volantis • Alphax • Antares • AR-558 • Arakis • Arbuk • Arken • Atbar • Avenal • Avior
B[]
Balosnee • Banea • Ba'neth • Barnard's Star • Belak • Benecia • Berengaria • Beta Comae Berenices • Beta Herculani • Beta Herculis • Beta Leonis Minoris • Beta Lyrae • Beta Pictoris • Beta Piscis Australis • Beta Reticuli • Beta Trianguli • Bhea • B'Moth
C[]
Calder • Cassiopeia Delta • Chal • Chara • Chi Draconis • Chi Eridani • Ciatella • Cor Caroli • Cursa
D[]
Dalmine • Delavi • Delta Aquilae • Delta Herculis • Delta Muscae • Delta Trianguli • Denobula Triaxa • Dinaal • Dopa • Dopteria • Dorvan • Draylon • Dreon
E[]
Elora • Ellison's Star • Enthara • Epsilon Anubis • Epsilon Boötis • Epsilon Eridani • Epsilon Ionis • Epsilon Librae • Epsilon Phoenicis • Epsilon Scorpii • Epsilon Sculptoris • Eta Cassiopeia • Eta Corvi • Eta Crucis • Eta Horologii • Eta Ursae Majoris
F[]
Fina • FGC-983 • FGC-486237 • FGC-531672 • FGC-505183 • Fomalhaut
G[]
Gacrux • Gaia • Gamma 400 • Gamma Coronae Australis • Gamma Crateris • Gamma Equulei • Gamma Eridon • Gamma Leporis • Gamma Ophiuchi • Gamma Serpentis • Ganalda • Gand • Garenor • Gema • Gorath
H[]
Haakona • Hanon • H'atoria • Heronius • Heva • Hiemdal-Maat • Hupyria
I[]
Iccobar • Ilidaria • Imhotep • Iota Carinae • Iota Crucis • Iota Horologii • Iota Pavonis • Iota Persei • Iota Piscium
J[]
K[]
Kappa Geminorum • Kappa Persei • Kappa Tucanae • Karemma • Kartella • Keloda • Kendi • Kendren • Kep Salu-Ketoi • K'hotan-K'ushui • Kobheeria • Kobliad • Korma • Kostolain • Kotaki • Kradin-Vori • Krenim • Kressari • Kurill • Kyana
L[]
Lambda Crateris • Lambda Serpentis • Lambda Ursae Majoris • La'voti • Legira • Lokirrim • Lytasia
M[]
Makar • Mari • Mariah • Markonia • Markov-Kalto • Maxia Zeta • Mempa • Merak • Mokra • Mu Andromedae • Mu Cassiopiae • Mu Ceti • Mu Leonis • Mu Virginis • Mylea
N[]
Nakan • Narendra • Nashira • Natori • Nausicaa • Nechani • Neethia • Nehru • Nequencia • New Earth • New France • Norvala • Nu Octantis • Nuu'Bar
O[]
Olmerak • Omega Fornacis • Omega Leonis • Omicron Persei • Omega Sagittarii • Oomaru-Yaan • Organia • Orias • Oshionian
P[]
Pallas 14 • Parada • Pendari • Phi Virginis • Pi Canis Majoris • Pi Piscis Australis • Pilar-Tholus • Porakas • Portas • Procyon • Psi Velorum
Q[]
R[]
Rator • Renavi • Rho Capricorni • Rho Coronae Borealis • Rho Puppis • Rho Tucanae • Rho Virginis • Rilnar • Rivos • Rog • Romulus • Rura Penthe • Rymus
S[]
Salgorax-Neptor • Sampalo • Sarpeidon • Setlik • Sigma Geminorum • Sheratan • Sikaris • Sinuiji-Ekinus • Sirius • Sky Spirit • Sobras • Somraw • Spica • Stakoron
T[]
Taresia • Tarod • Tau Ursae Majoris • Tekara • Tellun • Terrellia • Theta Centauri • Theta Cygni • Theta Draconis • Theta Eridani • Theta Indi • Theta Pegasi • Tikopai-Tutakai • Toffa • Topin • Torat • Torga • Torman • Torros • Tohvun • Trakia • Trill • Turei
U[]
Ultima Thule • Upsilon Ursae Majoris • Uxal
V[]
Valeria • Valt • Varala • Velos • Vendor • Vor'cha
W[]
X[]
Xi Herculis • Xi Hydrae • Xi Ophiuchi • Xyrillia
Y[]
Z[]
Zahl • Zakdorn • Zeta Boötis • Zeta Centauri • Zeta Gruis • Zeta Herculis • Zeta Leporis • Zeta Perseus • Zeta Reticuli • Zeta Serpentis • Zeta Trianguli Australis • Zeta Volantis • Zeta-2 Reticuli • Zibal • Zindar-Za'faran