HR 5568 or Gliese 570 is a triple starsystem 19.2 light years away from Earth. It is in the constellationLibra. It is of apparent magnitude 5.74. The primary star is an orange main sequence dwarf of spectral type K5. A triple star system consists of three gravitationally bound stars. ... A star system or stellar system is a group of stars (and possibly smaller bodies such as planets or asteroids) that orbit one another (a system with planetary bodies orbiting stars, are referred to as solar systems or planetary systems). ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Earth, also known as the Earth or Terra, is the third planet outward from the Sun. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Libra (♎, and Latin for balance) is a constellation of the zodiac. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... Hertzsprung-Russell diagram The main sequence of the Hertzsprung-Russell diagram is the curve where the majority of stars are located in this diagram. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ...
Also known as HR5568 for its relative bright primary, this triple starsystem is located 19.3 (ly) away from Sol.
As a relatively bright star in Earth's night sky, Star A is catalogued as Harvard Revised (HR) 5568, a numbering system derived from the 1908 Revised Harvard Photometry catalogue of stars visible to many Humans with the naked eye.
Some alternative useful star catalogue numbers for the star are: HR5568 C, Gl 570 C, HD 131976 B, BD-20 4123 B, SAO 183039 B, Vys or McC 726 C, and LHS 386 B, and ADS 9446 C. For Star C, the water zone orbit lies near 0.056 AU.
Altair Altair (α Aql / α Aquilae / Alpha Aquilae / Atair) is the brightest star in the constellation Aquila and the twelfth brightest star in the nighttime sky, at visual magnitude 0.
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