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Xi Ursae Majoris
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Xi Ursae Majoris is a quintuple star system 28.5 light-years away in the constellation of Ursa Major. It has the traditional name Alula Australis; Xi Ursae Majoris is the Bayer designation, which is L
Double star Xi Ursae Majoris.(θ):156.6° (ρ):2.1 arc"
Double star Xi Ursae Majoris.(θ):156.6° (ρ):2.1 arc"
Star system
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A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction. It may sometimes be used to refer to a single star. A large group of stars bound by
The Algol three-star system imaged in the near-infrared by the CHARA interferometer with 0.5 mas resolution in 2009. The shape of Algol C is an artifa
The Algol three-star system imaged in the near-infrared by the CHARA interferometer with 0.5 mas resolution in 2009. The shape of Algol C is an artifact.
Artist's impression of the orbits of HD 188753, a triple star system.
Artist's impression of the orbits of HD 188753, a triple star system.
Star system named DI Cha. While only two stars are apparent, it is actually a quadruple system containing two sets of binary stars.
Star system named DI Cha. While only two stars are apparent, it is actually a quadruple system containing two sets of binary stars.
Sirius A (center), with its white dwarf companion, Sirius B (lower left) taken by the Hubble Space Telescope.
Sirius A (center), with its white dwarf companion, Sirius B (lower left) taken by the Hubble Space Telescope.