Gliese 581e / ˈɡliːzə / or Gl 581e is an exoplanet orbiting within the Gliese 581 system, located 20.5 light-years (6.3 parsecs) away from Earth in the Libra constellation. It is the third planet discovered in the system (fourth if the disputed planet candidate Gliese 581d is included) and the first in order from the star.

Mar 7, 2025 · GJ 581 e is a super Earth exoplanet that orbits a M-type star. Its mass is 2.48 Earths, it takes 3.1 days to complete one orbit of its star, and is 0.02799 AU from its star. Its discovery was announced in 2009.

Gliese 581 (/ ˈɡliːzə /) is a red dwarf star of spectral type M3V which hosts a planetary system, 20.5 light-years (6.3 parsecs) away from Earth in the constellation Libra.

Oct 25, 2024 · The planet furthest out, Gliese 581d, orbits its host star in 66.8 days, while Gliese 581 e completes its orbit in 3.15 days.

Planet Gliese 581 e orbits its host star – located only 20.5 light-years away in the constellation Libra (“the Scales”) — in just 3.15 days. “With only 1.9 Earth-masses, it is the least massive exoplanet ever detected and is, very likely, a rocky planet”, says co-author Xavier Bonfils from Grenoble Observatory.

Apr 21, 2009 · Well-known exoplanet researcher Michel Mayor today announced the discovery of the lightest exoplanet found so far. The planet “e” in the famous system Gliese 581 is only about twice the mass...

Gliese 581e, discovered in 2009, has a mass 1.94 times that of Earth and is the smallest planet in the Gliese 581 system. It is also the closest to its star, orbiting once every 3.15 days at a distance from Gliese 581 of 4.5 million km (2.8 million miles).

Apr 21, 2009 · The reigning champ of most Earth-sized planets yet is a world called Gliese 581 e, which circles a star that has four planets total. It is called the smallest because of its mass, which is just...

Revisiting the GJ 581 multi-planetary system with new Doppler measurements from CARMENES, HARPS, and HIRES. The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades. The CARMENES search for exoplanets around M dwarfs .

Gliese 581e, discovered in 2009, has a mass 1.94 times that of Earth and is the smallest planet in the Gliese 581 system. It is also the closest to its star, orbiting once every 3.15 days at a distance from Gliese 581 of 4.5 million km (2.8 million miles).