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Stars visible (1) | Earth, Solar System and Universe.

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Alcor: little bright star belonging to the Big Dipper, which forms, together with Mizar, a dual system visible to the naked eye.
Aldebaran: Star of the constellation of Taurus which, with an apparent magnitude of 1.1, is one of the brightest in the sky. Also known as eye or heart of the bull, is a 53 year old light-years from Earth and has a 90 times the Sun's luminosity.
ALGOL: Star b of the constellation of Perseus. With a period of rotation of 69 hours, it is a double system that provides aspect of variable, but it is actually a binary eclipsante, i.e., their periodic variations in brightness are due to the mutual filing of its components.
Arthur: Star of Bootes, situated in the extension of the tail of Ursa Major. Spectral type K0 and visual magnitude 0.2, it has a diameter of 22 times that of the Sun.
Betelgeuse: Star of the constellation of Orion, the brighter and red, whose magnitude oscillates between 0.2 and 0.9. It is a semiregular variable, with 2.07 days.
Goat: brightest star in the constellation of the Coachman, of spectral type G, and the fourth in the sky by its apparent luminosity of 0.2.
Wavelets: visible group of Pleiades Stars.
Canicula.: brightest star in the greater Can, call SIRIUS today.
Capella or Capela: main star in the constellation of the Coachman, of magnitude 1.
Beaver: Star of the constellation of Gemini. It is a double, with a period of 350 years star, and its components have magnitudes of 2 and 2.9, respectively.
Deneb: Star of the constellation of the Swan. It is a supergiant, magnitude 1.3, located 1,000 a.l. of the Earth.
Denebola: second most important (b) star in the constellation of Leo, of magnitude 2.
Spike: main star in the constellation of Virgo. It's a dual system with a period of 4 days. Located about 160 a.l. of the Earth, it has a magnitude of 1.21 and belongs to the spectral type B2.
Polaris: Star located within 1 ° of the Northern celestial pole and is a useful reference to locate the direction of North. It is currently a star of magnitude 2 located in the constellation of Ursa minor. However, because of the precession, towards the 13,000 year this position will be occupied by the star Vega.
Formalhaut: main star in the constellation of the southern fish. Located 23 a.l., it has a magnitude of 1.3 and belongs to the spectral class A3. It is visible from the northern hemisphere in autumn.
Lynx or Lynx: (Alpha Lyncis) star of the third magnitude, the brightest in the constellation of the same name, located in the northern hemisphere, between the driver and the Big Dipper, South of the giraffe and North of Cancer

Translation for educational purposes authorized by: Astronomía: Tierra, Sistema Solar y Universo

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