double star

noun

: two stars that appear near each other in the sky:

a

: two stars that are in very nearly the same line of sight but belong to separate star systems and may be very far apart

b

: binary star

Examples of double star in a Sentence

Recent Examples on the Web

The system in question is the double star V Sagittae located around 10,000 light-years from Earth, containing a white dwarf stellar remnant and its victim companion star, which orbit each other roughly twice every Earth day. —Robert Lea, Space.com, 16 Sep. 2025

The double stars of Albireo are considered a binary star system, just over 400 light-years away, with just one light-year equaling nearly 6 trillion miles. —Mike Lynch, Twin Cities, 14 Sep. 2025

Now take a line down through it to Sadr (where the cross intersects), then Eta Cygni, with the base of the cross marked by Albireo (a double star consisting of a gold and a blue stars that look fabulous in a small telescope). —Jamie Carter, Forbes.com, 26 July 2025

In late July, the meteors radiate near the area of Alpha Capricorni, a double star visible to the naked eye. —Julia Jacobo, ABC News, 24 July 2025

Word History

First Known Use

1767, in the meaning defined above

Rhymes for double star

• abattoir
• alcazar
• autocar
• avatar
• belshazzar
• caviar
• caviare
• cinnabar
• commissar
• condylar
• deodar
• handlebar

Kids Definition

double star

noun

: two stars that appear very near each other

especially : binary star