double star
Noun
Meaning
a system of two stars that revolve around each other under their mutual gravitation
Source: WordNetSynonyms
Hypernyms
Related terms
Examples
3 Centauri is a double star with a blue-white hued primary of magnitude 4.6 and a secondary of magnitude 6.1.
Also called Hadar and Agena, Beta Centauri is a double star; the primary is a blue-hued giant star of magnitude 0.6, 525 light-years from Earth.
Eta Sagittarii (η Sgr) is a double star with component magnitudes of 3.18 and 10, while Pi Sagittarii (π Sgr) is actually a triple system whose components have magnitudes 3.7, 3.8, and 6.0.
“Jupiter orbits the sun in 12 years and 60 years, so Jupiter laps … a conjunction like this happens every 20 years, but some of those conjunctions happen when Jupiter and are further apart, so then it does not look like a double star.
A rare double star system has been spotted in the Milky Way.
For example, the total or combined magnitude of the double star Alpha Centauri is 0.27, while its two component stars have magnitudes of +0.01 and +1.33.