description Gliese 876 d Overview
Gliese 876 d is a super-Earth exoplanet orbiting the red dwarf star Gliese 876, located approximately 15 light-years from Earth. Discovered in 2005 through radial velocity measurements, it was among the first super-Earth-mass planets identified around a main-sequence star. The planet has a minimum mass of approximately 5.9 times that of Earth and orbits very close to its host star with a period of less than two days. Gliese 876 hosts at least four known planets, including gas giant companions.
help Gliese 876 d FAQ
What is Gliese 876 d?
Gliese 876 d is a super-Earth orbiting the red dwarf star Gliese 876. It was among the early super-Earth-mass planets found around a main-sequence star.
How far away is Gliese 876 d?
The Gliese 876 system is about 15 light-years from Earth. Its relative proximity makes the system an important nearby example of a planetary system around a red dwarf.
How was Gliese 876 d found?
Gliese 876 d was discovered in 2005 through radial-velocity measurements. The method detects the small back-and-forth movement that an orbiting planet induces in its star.
Is Gliese 876 d potentially habitable?
It is generally not treated as an Earth-like habitable-world candidate because it orbits very close to its red dwarf and receives intense stellar radiation. Its importance is mainly scientific, as an early example of a low-mass planet around a main-sequence star.
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