description GJ 273 c Overview
GJ 273 c is a small exoplanet orbiting GJ 273, also known as Luyten's Star, a nearby red dwarf. It was reported in 2017 from radial-velocity observations made with the HARPS spectrograph and identified as part of a multi-planet system that includes GJ 273 b. GJ 273 c travels closer to its host star than planet b and therefore receives more stellar radiation. It is generally described as a super-Earth-sized or lower-mass planet, not as a gas giant.
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What is GJ 273 c?
GJ 273 c is a small exoplanet orbiting the nearby red dwarf GJ 273, also called Luyten's Star. It is one of several known planets in that system.
How was GJ 273 c discovered?
GJ 273 c was identified from radial-velocity observations made with the HARPS spectrograph. The method detects the gravitational pull that the planet exerts on its star.
When was GJ 273 c reported?
GJ 273 c was reported in 2017. The discovery formed part of the study of the multi-planet system around Luyten's Star.
Does GJ 273 c orbit the same star as GJ 273 b?
Yes. Both GJ 273 c and GJ 273 b orbit the red dwarf GJ 273, or Luyten's Star. They are separate planets in the same nearby system.
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