Kepler-36 [SEP] constellation
Kepler-36
Kepler-36 is a star in the constellation of Cygnus with two known planets. It has an anomalously large radius, meaning that it is a subgiant.
Planetary system.
On June 21, 2012, the discovery of two planets orbiting the star was announced. The planets, a super-Earth and a "mini-Neptune" are unusual in that they have very close orbits; their semi-major axes differ by only 0.013 AU. The outer planet orbits only 11% further than the inner one.
K2-239
K2-239 (also designated EPIC 248545986) is a small red dwarf star in the constellation Sextans about 49 parsecs (160 light-years) away from Earth. Observed by the Kepler Space Telescope during Campaign 14 of its K2 "Second Light" mission, it was found to have three hot, likely rocky Earth-sized planets in orbit around it.
Stellar characteristics.
K2-239 is a small red dwarf star of spectral class M3V. It is 40% the mass and 36%