The first three planets orbit closer to the star than the inner edge of the habitable zone, with planets d and (g) orbiting within it. Breaking News .
Gliese 581 is a red dwarf in the constellation Libra. Finder map – field width 7°, stars to magnitude +11. Models of the habitable zone of Gliese 581 show that it extends from about 0.1 to 0.5 AU taking in part of the orbit of Gliese 581d. In late 2010, US astronomers annoucent a planet in the habitable zone. Multiply by the 2.65 ratio of total radiation intensity onto Gliese 581 C to that of earth, and this means 11% as much intensity of that wavelength on Gliese 581 C as on Earth. This statement has been challenged by the European HARPS team.
(See a 2MASS Survey image of Gl 581 from the NASA Star and Exoplanet Database.) Gliese 581c is a super-Earth planet that was discovered in 2007. Gliese 581 c is likely to have a runaway greenhouse effect. Gliese 581 is a dim red dwarf star, like Gliese 623 A (M2.5V) and B (M5.8Ve) at lower right. Even though Gliese 581 is rather faint, it is also very red, and it is possible that color alone will identify the star for you once you have located the field. Gliese 581c / ˈ ɡ l iː z ə / (Gl 581c or GJ 581c) is a planet orbiting within the Gliese 581 system.It is the second planet discovered in the system and the third in order from the star. It is the 89th closest star to the Solar System. It resides in the Gliese 581 system, which at 20 light-years from Earth is relatively close to our planet (in celestial terms).
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