Category

Planetary systems with four confirmed planets

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red dwarf star in the constellation of Ophiuchus

star in the constellation Ara

star in the constellation Pegasus

star in the constellation Aquarius

star in the constellation Piscis Austrinus

Kepler-51 is a Sun-like star that is about 500 million years old. It is orbited by four planets—Kepler-51b, c, d and e—first three of which are super-puffs and have the lowest known densities of any known exoplanet. The transiting planets in the system (b, c and d) are similar in radius to gas giants like Jupiter, but have unusually small masses for their size, only a few times greater than Earth's.

star in the constellation Ara

Kepler-223 (KOI-730, KIC 10227020) is a G8 star with an extrasolar planetary system discovered by the Kepler mission. Studies indicate that the Kepler-223 star system consists of 4 planets orbiting the star.

XO-2 is a binary star system about away in the constellation Lynx. It consists of two components, XO-2N and XO-2S, both of which host planetary systems.

TOI-700 is a red dwarf 101.4 light-years away from Earth located in the Dorado constellation that hosts TOI-700 d, the first Earth-sized exoplanet in the habitable zone discovered by the Transiting Exoplanet Survey Satellite (TESS).

Kepler-107 is a star about away in the constellation Cygnus. No stellar companions were found as of 2016.

star in the constellation Hercules

K2-72 (also designated EPIC 206209135) is a cool red dwarf star of spectral class M2V located about away from the Earth in the constellation of Aquarius. It is known to host four planets, all similar in size to Earth, with one of them residing within the habitable zone.

Kepler-26 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension Declination . With an apparent visual magnitude of 15.5, this star is too faint to be seen with the naked eye. ==Planetary system== The two planets, Kepler-26b and Kepler-26c, were discovered by transit method in late 2011, and classified as small (sub-Neptune) gas giants in 2016. In 2012, the planetary candidate Kepler-26d was also detected, and confirmed in 2014. The planet Kepler-26e was discovered on a much wider orbit in 2014.

thumb | right | alt=Comparative sizes of Sun and Kepler-24. | Comparative sizes of Sun and Kepler-24. Kepler-24 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension , Declination . With an apparent visual magnitude of 15.5, this star is too faint to be seen with the naked eye.

Kepler-68 is a Sun-like main sequence star located away in the constellation Cygnus. It is known to have at least four planets orbiting around it. The third planet has a mass similar to Jupiter but orbits within the habitable zone.

WASP-47 is a star similar in size and brightness to the Sun about 881 light-years away in the constellation Aquarius. It lies within the Kepler K2 campaign field 3. It was first noticed to have a hot Jupiter exoplanet orbiting every 4 days in 2012 by the Wide Angle Search for Planets (WASP) team. While it was thought to be a typical hot Jupiter system, three more planets were found in 2015: an outer gas giant within the habitable zone, a hot Neptune exterior to the hot Jupiter's orbit and a super-Earth interior to the hot Jupiter's orbit. WASP-47 is the only planetary system known to have both

Kepler-89 is a star with four confirmed planets. Kepler-89 is a possible wide binary star.

high proper-motion star in the constellation Lynx

Kepler-65 is a subgiant star slightly more massive than the Sun and has at least four planets.

star in the constellation Pisces

TOI-561 is an old, metal-poor, Sun-like star, known to have multiple small planets. It is an orange dwarf, estimated to be 10.5 billion years old, and about 79% the mass and 85% the radius of the Sun. It is located in the constellation Sextans, near the border with Leo.

star in the constellation Boötes