What is a double star?
A double star (or multiple star) is a set of two (or more) stars that appear next to each other. True binaries or multiples are stars that are physically close and are bound together by gravity. Optical binaries or multiples are stars that are just lined up just right so that the appear to be close, but are actually at different distances (sometimes vastly so).
Double Stars by Constellation
Initial data compiled by Kevin Muenzler, Eagle Creek Observatory, referring to Burgham's Celestial Handbooks and his own observations.
- Andromeda
- Antlia
- Apus
- Aquarius
- Aquila
- Ara
- Aries
- Auriga
- Bootes
- Caelum
- Camelopardalis
- Chamaeleon
- Cancer
- Canes Venatici
- Canis Major
- Canis Minor
- Capricornus
- Carnia
- Cassiopeia
- Centaurus
- Cepheus
- Cetus
- Columbia
- Coma Berenices
- Corona Australis
- Corona Borealis
- Corvus
- Crater
- Crux
- Cygnus
- Delphinus
- Dorado
- Draco
- Equuleus
- Eridanus
- Fornax
- Gemini
- Grus
- Hercules
- Horologium
- Hydra
- Hydrus
- Indus
- Lacerta
- Leo
- Leo Minor
- Lepus
- Libra
- Lupus
- Lynx
- Lyra
- Mensa
- Microscopium
- Monoceros
- Musca
- Norma
- Ophiucus
- Orion
- Pavo
- Pegasus
- Perseus
- Phoenix
- Pictor
- Pisces
- Pisces Austrinus
- Puppis
- Pyxis
- Reticulum
- Sagitta
- Sagittarius
- Sculptor
- Scorpius
- Scutum
- Serpens
- Sextans
- Taurus
- Telescopium
- Triangulum
- Triangulum Astrale
- Tucana
- Ursa Major
- Ursa Minor
- Vela
- Virgo
- Volans
- Vulpecula