Tyl is the name of the star Epsilon Draconis. Tyl belongs to the spectral class K0 and possesses an apparent brightness of +3,8 likes. Tyl is approx.. removes 147 light-years (Hipparcos data base). Tyl is already in telescopes off approx.. 10 centimeters of lens aperture dissolvable double star. Only the +7.3 bright companion likes from Tyl is in a angle angle of 3,2"with a position angle of 21 degrees. It is of the spectral type K5.
Epsilon Eridani has been the target of intense scrutiny by SETI projects, including the first, Project Ozma.
Moreover, Epsilon Eri provides a window into what conditions may have been like in the neighborhood of the Sun at a time when life was first beginning to emerge on the young Earth.
The presence of Epsilon Eridani C was disclosed by researchers at the University of Rochester using a new technique that does not use direct light from the star, but rather light radiating from the dust surrounding it.
Epsilon Eridani is a chromospherically active star, whose spectral line shapes, magnetic field, and photospheric temperature vary much more over time than most main sequence stars (Gray and Baliunas, 1995).
Cochran of the University of Texas McDonald Observatory announced the discovery of this nearby extra-Solar planet around Epsilon Eridani on August 7, 2000, at the 24th General Assembly of the International Astronomical Union in Manchester, England (United Kingdom).
The distance from Epsilon Eridani where an Earth-type rocky planet may have liquid water on its surface may have to be between 0.47 and 0.91 AU (Jones and Sleep, 2003) -- between the orbital distances of Mercury and Earth in the Solar System.
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