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A multiple star system consists of two or more stars that appear from Earth to be close to one another in the sky. [dubious – discuss] This may result from the stars actually being physically close and gravitationally bound to each other, in which case it is a physical multiple star, or this closeness may be merely apparent, in which case it is an optical multiple star [a] Physical multiple ...
Albireo is the star in the head of the constellation of Cygnus (bottom). β Cygni (Latinised to Beta Cygni) is the system's Bayer designation. The brighter of the two components is designated β¹ Cygni or Beta Cygni A and the fainter β² Cygni or Beta Cygni B. The origin of the star system's traditional name Albireo is unclear.
The stars with the most confirmed planets are the Sun (the Solar System's star) and Kepler-90, with 8 confirmed planets each, followed by TRAPPIST-1 with 7 planets. The 1,033 multiplanetary systems are listed below according to the star's distance from Earth. Proxima Centauri, the closest star to the Solar System, has three planets (b, c and d).
Alpha Centauri (α Centauri, α Cen, or Alpha Cen) is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus (α Centauri A), Toliman (α Centauri B), and Proxima Centauri (α Centauri C). [14] Proxima Centauri is the closest star to the Sun at 4.2465 light-years (1.3020 pc).
The star system was the method of creating, promoting and exploiting stars in Hollywood films from the 1920s until the 1960s. Movie studios had selected promising young actors and glamorise and create personas for them, often inventing new names and even new backgrounds.
Nu Scorpii (ν Scorpii, abbreviated Nu Sco, ν Sco) is a multiple star system in the constellation of Scorpius. It is most likely a septuple star system, [5] consisting of two close groups (designated Nu Scorpii AB and CD) that are separated by 41 arcseconds. [5] Based on parallax measurements, [7] it is approximately 470 light-years from the Sun.
Bennu is both an old and a new asteroid. Like all of the millions of other objects in the asteroid belt, it formed 4.5 billion years ago when our solar system was just accreting. But its loose ...
In 1921, Joel Stebbins announced that observations from 1917 through 1921 had shown that the star is an eclipsing binary. [14] AR Cassiopeiae A is an Algol-type eclipsing binary with an orbital period of about 6.07 days. [4] Its primary is a B-type main-sequence star, and the secondary an A-type main-sequence star. The secondary star may be an ...