Best K Star
WASP-107b is an exoplanet orbiting a K-type star. It’s a super-Neptune with a remarkably low density, making it one of the least dense planets discovered to date. Observations reveal significant helium escaping from its atmosphere. This planet is of interest to astronomers studying planetary formati...
HD 219134 b is a rocky super-Earth exoplanet located approximately 21 light-years away in the constellation Cassiopeia. Discovered in 2015, it is notable for being one of the closest transiting exoplanets to our solar system, making it a valuable target for atmospheric study. The planet orbits its K...
Kepler-444 b is a rocky sub-Earth exoplanet orbiting the ancient K-type star Kepler-444, a system estimated to be approximately 11 billion years old. Discovered through transit photometry by NASA's Kepler space telescope and announced in 2015, it is the innermost of five known planets in the system....
Epsilon Eridani b is a gas giant exoplanet orbiting the nearby K-type star Epsilon Eridani, located approximately 10.5 light-years from the Solar System. Evidence for the planet was identified through long-term radial velocity monitoring of the star, with results reported around 2000. The planet has...
HD 219134 c is a transiting exoplanet orbiting HD 219134, a nearby K-type main-sequence star about 21 light-years from Earth. Announced in 2015, it is classified as a super-Earth and completes a close, short-period orbit, making it much hotter than Earth despite the host star's relatively modest tem...
Kepler-444 c is a small transiting exoplanet in the five-planet Kepler-444 system. It is smaller than Earth and orbits close to its K-type host star, so it is not considered an Earth-like habitable world. The system is notable because its star is more than 11 billion years old, demonstrating that sy...
HD 40307 g was reported in 2012 as a super-Earth candidate detected through radial-velocity measurements of the nearby K-type star HD 40307. Its proposed orbit placed it within or near the star's habitable zone, prompting interest in whether temperatures could permit liquid water under suitable atmo...
A Venus-sized rocky exoplanet discovered in 2015, notable as part of an ancient eleven-billion-year-old planetary system orbiting an orange dwarf star in the Milky Way.
A sub-Earth exoplanet confirmed in 2015, notable for orbiting within the ancient Kepler-444 star system that is over eleven billion years old, more than twice our solar system's age.
Discovered by NASA's TESS satellite in 2019, HD 21749 b is a sub-Neptune exoplanet notable for having one of the longest orbital periods of any planet found by the initial TESS mission.
A mini-Neptune exoplanet discovered in 2015, notable for having a mass similar to Uranus and orbiting the nearby star HD 219134, which is approximately 21 light-years away.
Discovered in 2018, Wolf 503 b is a super-Earth exoplanet notable for orbiting a nearby orange dwarf star, making it a prime candidate for future atmospheric study by space telescopes.
Announced in 2019, HD 21749 c is an Earth-sized exoplanet discovered by NASA's TESS satellite, notable for being the first roughly Earth-sized planet found by the TESS mission.
The innermost of three super-Earths discovered in 2008 around K-type star HD 40307, approximately 42 light-years away, with an orbital period of just 4.3 days.
A massive exoplanet discovered in 2015, notable for being a long-period gas giant in the HD 219134 system, orbiting its K-type star at a distance of over three astronomical units.
HD 192310 b is a Neptune-mass exoplanet orbiting the nearby K-type star HD 192310 about 29 light-years away, discovered in 2011 using radial-velocity data from the Keck and HARPS spectrographs.
HD 128311 c is a gas giant exoplanet orbiting the K-type star HD 128311 about 53 light-years away, announced in 2005 and orbiting in a 2:1 mean-motion resonance with HD 128311 b.
HD 128311 b is a gas giant exoplanet orbiting the K-type star HD 128311 about 53 light-years away, discovered in 2002 via radial-velocity measurements from the Anglo-Australian Planet Search.
The outermost of the three originally detected super-Earths around HD 40307, announced in 2008, completing its orbit every 20.4 days with a minimum mass near 9.5 Earth masses.
A super-Earth in the HD 40307 system discovered in 2008, orbiting every 9.6 days, and part of one of the first confirmed triple super-Earth systems found.
HD 219134 f is an exoplanet orbiting the nearby K-dwarf star HD 219134, notable for being part of one of the closest multi-planet systems to Earth, located 21 light-years away.
HD 27442 b is a Jupiter-mass planet orbiting the subgiant Epsilon Reticuli (HD 27442) with a ~428-day period, discovered in 2000 by Butler et al.
