Hase (Sternbild) - 7 Angebote vergleichen

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Kapitel: Hase, Messier 79, Gliese 229, Nihal, Arneb, 2mass J05591914-1404488, 2mass J05233822-1403022, 2mass J05361998-1920396, 2mass J06050196-2342270, Hd 33283. Aus Wikipedia. Nicht dargestellt. Auszug: Gliese 229 (also written as Gl 229 or GJ 229) is a red dwarf star about 19 light years away in the constellation Lepus. It has 58% of the mass of the Sun, 69% of the Sun's radius, and a very low projected rotation velocity of 1 km/s at the stellar equator. The star is known to be a low activity flare star, which means it undergoes random increases in luminosity because of magnetic activity at the surface. The spectrum shows emission lines of calcium in the H and K bands. The emission of X-rays has been detected from the corona of this star. These may be caused by magnetic loops interacting with the gas of the star's outer atmosphere. No large-scale star spot activity has been detected. In 1994 a substellar companion was imaged and in 1995 it was confirmed. Gliese 229B is a brown dwarf orbiting the star; although it is too small to sustain hydrogen-burning nuclear fusion, with a mass of 20 to 50 times that of Jupiter it is still too massive to be a planet. Gliese 229B was the first confirmed substellar mass object. This object has a surface temperature of 950 K. The space velocity components of this star are U = +12, V = -11 and W = -12 km/S. The orbit of this star through the Milky Way galaxy has an eccentricity of 0.07 and an orbital inclination of 0.005. ...http://booksllc.net/?l=de.

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Hase, Messier 79, Gliese 229, Nihal, Arneb, 2MASS J05591914-1404488, 2MASS J05233822-1403022, 2MASS J05361998-1920396, 2MASS J06050196-2342270, HD 33283, Hase, Messier 79, Gliese 229, Nihal, Arneb, 2MASS J05591914-1404488, 2MASS J05233822-1403022, 2MASS J05361998-1920396, 2MASS J06050196-2342270, HD 33283.

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