Gliese 581 c also known as Wolf 562 c

Gliese 581 c also known as Wolf 562 c and HIP 74995 c, is a "super-earth" or large terrestrial extrasolar planet orbiting the red dwarf star Gliese 581. Assuming the planet's mass is close to the lower limit determined by radial velocity measurements (the true mass is unknown), it would be the smallest known extrasolar planet around a main sequence star to date. Gliese 581 c generated a lot of interest as it was initially reported to be the first potentially Earth-like planet in the habitable zone of its star, with a temperature right for liquid water on its surface and hence, potentially capable of supporting life as we know it. However, subsequent study that took into account the heating effect of the planet’s atmosphere now appears to make this less likely. Gliese 581 d, the third planet in the system, is now regarded as more likely to harbor life.The planet is astronomically close, at 20.4 light years (193 trillion km or 119 trillion miles) from Earth in the direction of the constellation of Libra. This distance, along with the declination and right ascension coordinates, give the planet's exact location in our galaxy. Its star is identified as Gliese 581 by its number in the Gliese Catalogue of Nearby Stars; it is the 87th closest star system to the Sun that we know of.