Gliese 667

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Gliese 667 (also GJ 667, HR 6426 ) is a multiple star system consisting of three stars in the constellation Scorpio. It is located 6.8 parsecs or 22.1 light-years away from Earth. The part of the system red dwarf Gliese 667 C accompany at least five exoplanets. The components A and B form a binary star system with an orbital period of about 42 years; the large half- axis measures 1 ", 8 For the couple a metallicity of [Fe / H] ☉ ≈ -0.6 was measured, so it is a metal- poor compared to the solar system. The components A and B are both K- main sequence star, Gliese 667 A is a member of spectral type K3 and Gliese 667 B of spectral type K5. The pair AB was recognized and recorded in the 19th century as a double star. Gliese 667 C is a red dwarf of spectral type M2 and is of the pair AB least 230 AU from.

Exoplanets around Gliese 667 C

The number of known exoplanets could be increased several times by several analyzes. On 25 June 2013, the European Southern Observatory reported evidence of up to seven planets, five of which are secured. For this purpose, data from several telescopes were analyzed together. Among the confirmed planet, there are three " super-Earths " in the habitable zone. Such planets are more massive than the Earth and are considered potentially habitable - they are at such a distance from the star that the existence of liquid water on their surfaces is possible. The three super-Earths discovered Gliese 667 Cc, Cf and Ce have, however, in contrast to the Earth probably all a tidally locked to. You orbiting Gliese 667C every 28, 39 or 62 days.