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  2. Binary star - Wikipedia

    en.wikipedia.org/wiki/Binary_star

    A binary star or binary star system is a system of two stars that are ... After a sufficient number of observations are recorded over a period of time, ...

  3. KIC 9832227 - Wikipedia

    en.wikipedia.org/wiki/KIC_9832227

    KIC 9832227 is a contact binary star system in the constellation Cygnus, located about 2,060 light-years away. It is also identified as an eclipsing binary with an orbital period of almost 11 hours.

  4. Star system - Wikipedia

    en.wikipedia.org/wiki/Star_system

    A star system of two stars is known as a binary star, binary star system or ... multiple stars will in time theoretically ... with a period of 547,000 (+66,000 ...

  5. Algol variable - Wikipedia

    en.wikipedia.org/wiki/Algol_variable

    The period, or time span between two primary minima, is very regular over moderate periods of time (months to years), being determined by the revolution period of the binary, the time it takes for the two components to once orbit around each other. Most Algol variables are quite close binaries, and therefore their periods are short, typically a ...

  6. Sirius - Wikipedia

    en.wikipedia.org/wiki/Sirius

    Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU [e] (roughly the distance between the Sun and Uranus) and a period of 50.1 years. The brighter component, termed Sirius A, is a main-sequence star of spectral type early A , with an estimated surface temperature of 9,940 K . [ 14 ]

  7. Researchers find binary stars orbiting near Milky Way's ... - AOL

    www.aol.com/news/researchers-binary-stars...

    The newly-discovered binary star system, ... Binary star system detected for 1st time near supermassive black hole. Show comments. Advertisement. Advertisement. In Other News. Entertainment.

  8. WR 20a - Wikipedia

    en.wikipedia.org/wiki/WR_20a

    WR 20a is an eclipsing binary star belonging to or recently (0.5 millions years before present) ejected from the young, massive cluster Westerlund 2. [8] It was discovered in 2004 to be one of the most massive binary systems known, for which the masses of the components have been accurately measured.

  9. Visual binary - Wikipedia

    en.wikipedia.org/wiki/Visual_binary

    For a visual binary system, measurements taken need to specify, in arc-seconds, the apparent angular separation on the sky and the position angle – which is the angle measured eastward from North in degrees – of the companion star relative to the primary star. Taken over a period of time, the apparent relative orbit of the visual binary ...