HD 39091 - System
Simulates Pi Mensae, also HD 39091. An eccentric giant was already known; TESS then found an inner transiting super-Earth, its first planet. The super-Earth was TESS's first confirmed planet.
Exoplanets
Hall of Fame
Landmark exoplanet systems: the first confirmed planets, the discoveries that opened each detection method, and the architectures that changed the field. Pulsar planets, 51 Pegasi, transiting hot Jupiters, imaged giants, circumbinary worlds, and compact chains such as TRAPPIST-1. These systems also remain in their planet-count lists.
HD 40307 - System
Simulates HD 40307, a nearby packed system of super-Earths. Several worlds orbit inside a few tenths of an AU around a quiet K dwarf. The star is a quiet K dwarf about 42 light-years away.
HD 45364 - System
Simulates HD 45364, two giant planets locked in a 3:2 mean-motion resonance. They were likely captured into that rhythm while migrating through the disk.
HD 80606 - System
Simulates HD 80606 b, a giant with eccentricity near 0.93. At perihelion it is flash-heated by a factor of hundreds within a few hours. Each close pass lasts only hours before the planet retreats.
HD 82943 - System
Simulates HD 82943, a pair of giant planets in a 2:1 resonance. The inner world completes two orbits for each one of the outer, a Jupiter-Saturn-like lock.
HD 95086 - System
Simulates HD 95086 b, a young giant planet imaged in a debris disk. It is one of the lower-mass planets seen directly, still glowing from formation. It remains one of the lower-mass planets seen directly.
HIP 41378 - System
Simulates HIP 41378 b and c, a rare pair of long-period transiting planets. Most transiting worlds orbit in days; these take weeks to more than a year. Alignments this long are rare, so few such planets transit.
HIP 65426 - System
Simulates HIP 65426 b, the first exoplanet JWST imaged directly. This wide, young giant was a commissioning target for the telescope's coronagraphs. The planet orbits far outside any region we can transit.
HIP 67522 - System
Simulates HIP 67522 b, a Jupiter-sized planet around a 17-million-year-old Sun-like star. Stellar flares and the young planet interact. The planet's radius is still inflated by youth.
HR 2562 - System
Simulates HR 2562 b, a massive companion imaged inside a debris disk. It sits near the planet-brown-dwarf boundary, carving a gap in the dust. The companion was found with the Gemini Planet Imager.
HR 8799 - System
Simulates HR 8799, the first multi-planet system ever photographed. Four young giant planets orbit far outside a debris disk, all seen directly. The four planets were announced together in 2008.
K2-138 - System
Simulates K2-138, a chain of six sub-Neptunes near resonance, found by citizen scientists. The planets form an even, peas-in-a-pod sequence. The star is a K dwarf, and the chain was found in K2 data.
K2-141 - System
Simulates K2-141 b, a lava world on an ultra-short orbit. The dayside is hot enough for a rock-vapor atmosphere that may rain out as magma. A year on the lava world lasts only about 6.7 hours.
K2-18 - System
Simulates K2-18 b, a temperate sub-Neptune in the habitable zone of a red dwarf. It is one of JWST's most studied small-planet atmospheres. Hubble reported water vapor in its thick atmosphere.
K2-22 - System
Simulates K2-22 b, a disintegrating planet. Dust lost from this ultra-short-period world makes the transit look different every time it passes. The orbit is only about nine hours long.
K2-266 - System
Simulates K2-266, a compact system whose innermost planet is strongly misaligned. The ultra-short inner world does not share the outer planets' plane.
KELT-1 - System
Simulates KELT-1 b, a brown dwarf on a hot-Jupiter orbit. At about 27 Jupiter masses it is a bridge between planets and stars, inflated by the heat. It transits, so both its radius and mass are known.
KELT-9 - System
Simulates KELT-9 b, the hottest known giant planet. It orbits an A-type star so closely that molecules on the dayside are torn apart. Dayside temperatures climb past 4000 kelvin.