Top Results for Hot Jupiter

HD 209458 b is a giant exoplanet orbiting a Sun-like star approximately 153 light-years away. It gained significant attention as the first planet detected through the transit method in 1999. Scientists identified an escaping hydrogen atmosphere, marking the initial confirmation of such atmospheric l...

KELT-9b is a giant exoplanet orbiting the star HD 189733A. It’s notable as the hottest known planet, boasting a dayside temperature exceeding 4,000 Kelvin – hotter than many stars. This ultrahot Jupiter was discovered by the Kentucky Extrasolar Traniting Survey (KELT) in 2017 and is of interest to a...

HD 189733 b is a gas giant exoplanet orbiting a Sun-like star approximately 63 light-years away. It’s notable for possessing a surprisingly detailed atmosphere, allowing scientists to study extreme weather conditions. High-speed winds composed of iron and silicate particles have been observed within...

WASP-76b is an exoplanet orbiting a distant star, classified as a “hot Jupiter.” Its notable characteristic is its extremely dense atmosphere containing iron vapor. Observations reveal iron rain occurring on the planet’s nightside due to temperature variations. This phenomenon, confirmed through spe...

WASP-96b is a giant exoplanet orbiting a star approximately 843 light-years away. Its atmosphere was studied extensively using the James Webb Space Telescope, yielding one of the earliest publicly available datasets for analyzing exoplanetary atmospheres. This data provides valuable insights into th...

WASP-39b is a giant exoplanet orbiting a Sun-like star approximately 700 light-years away. The James Webb Space Telescope’s detailed observations in 2022 revealed its substantial atmosphere containing key molecules such as carbon dioxide, sulfur dioxide, and water vapor. This data provides valuable...

51 Pegasi b is a gas giant exoplanet orbiting the Sun-like star 51 Pegasi. Its discovery in 1995 marked the first confirmation of an exoplanet around such a star. This “hot Jupiter” planet’s existence was determined through radial velocity measurements, offering scientists a crucial early example fo...

HD 189733 is a K-type main-sequence star located approximately 64 light-years away in the constellation Vulpecula. The star hosts a hot Jupiter exoplanet, HD 189733 b, discovered in 2005, which became the first exoplanet to have its atmospheric composition directly characterized through transmission...

WASP-12b is a massive exoplanet orbiting the star WASP-12. This “hot Jupiter” exhibits an exceptionally short orbital period of approximately one Earth day due to its tight proximity to the star. The planet’s rapid movement and intense heat make it a valuable subject for studying atmospheric process...

TrES-2b is a giant exoplanet orbiting the star GSC 03549-02807. It’s notable as the darkest known exoplanet, reflecting extremely little light – less than one percent. This makes it a valuable subject for studying planetary atmospheres and extreme conditions. Astronomers and researchers interested i...

WASP-121b is an exoplanet classified as a giant, resembling a hot Jupiter. Its notable characteristic is its extremely short orbital period of approximately 1.27 days around its host star. This rapid transit and intense heat—with dayside temperatures exceeding 2400 K—have allowed scientists to detec...

WASP-189b is a giant exoplanet orbiting a young A-type star. It’s notable for being one of the hottest known exoplanets, reaching dayside temperatures around 3400 Kelvin. Its ultrashort orbital period makes it an ideal target for studying atmospheric processes and transiting planets. Astronomers and...

WASP-12 is a star in the constellation Auriga that hosts WASP-12b, a hot Jupiter exoplanet with an orbital period of approximately one Earth day. The planet is being tidally disrupted by gravitational forces from its host star, causing material to stream from the planet and be accreted by the star....

WASP-43b is a hot Jupiter exoplanet discovered in 2011 by the Wide Angle Search for Planets survey. It orbits an active K-type orange dwarf star located approximately 80 light-years from Earth. The planet is notable for its extremely close orbit, completing a full revolution around its host star in...

WASP-17b is a giant exoplanet announced in 2009 by the Wide Angle Search for Planets consortium. It holds the distinction of being the first exoplanet confirmed to orbit in a retrograde direction, moving in the opposite direction of its host star's rotation. Classified as a hot Jupiter, it is also n...

WASP-18b is an ultrashort-period hot Jupiter exoplanet discovered by the Wide Angle Search for Planets survey in 2009. It has a mass roughly 10 times that of Jupiter and completes an orbit around its F-class host star in less than one day. Because it orbits closely to its star, the planet is subject...

HAT-P-7b is a hot Jupiter exoplanet located in the Cygnus constellation, notable for its retrograde orbit around its host star. It was initially discovered by the Hungarian-made Automated Telescope Network project before being observed by NASA's Kepler space telescope. Kepler detected the planet's r...

Tau Boötis is an F-type main-sequence star located roughly 51 light-years from Earth in the constellation of Boötes. The star is widely recognized in astronomical studies for harboring the exoplanet Tau Boötis b, a massive hot Jupiter discovered in 1996 by Geoff Marcy and R. Paul Butler. This planet...

Tau Boötis b is an exoplanet categorized as a hot Jupiter, orbiting the F-type star Tau Boötis. Discovered in 1996 using the radial velocity method, it was one of the earliest exoplanets found around a sun-like star. The planet is tidally locked to its host star and was among the first exoplanets to...

Upsilon Andromedae b is a hot Jupiter exoplanet discovered in 1996 orbiting the F-type main-sequence star Upsilon Andromedae A, located approximately 44 light-years from Earth. It was the first planet detected in this system, which subsequently became the first confirmed multi-planet system discover...

WASP-19b is a hot Jupiter exoplanet with one of the shortest known orbital periods of any exoplanet, completing an orbit around its G-type host star in approximately 0.789 days, or roughly 19 hours. It was discovered by the Wide Angle Search for Planets (WASP) survey and its discovery was published...

HAT-P-32b is an inflated hot Jupiter exoplanet orbiting the G-type or F-type star HAT-P-32. Discovered in 2011, it is situated in the northern constellation of Andromeda. The planet has one of the largest known radii for its mass class, resulting in an extremely low density. Its significant atmosphe...

A highly inflated hot Saturn orbiting a subgiant star with one of the lowest densities among known exoplanets, making it a frequently cited benchmark for atmospheric modeling.

HAT-P-13b is a transiting hot Jupiter discovered by the HATNet survey and announced in 2009. It circles its Sun-like host star in a short-period orbit, while the same system contains a more distant and substantially more eccentric companion detected through radial-velocity measurements. The system h...

Kepler-7b is a transiting hot Jupiter discovered during NASA's Kepler mission. It has a large radius relative to its mass, giving it an unusually low average density, and it orbits very close to its host star. Measurements of changes in reflected starlight across its orbit revealed an unevenly brigh...

HAT-P-2b is a confirmed gas-giant exoplanet that crosses the disk of its host star, HAT-P-2, an F-type star. It has a mass of about nine Jupiters, completes an orbit in roughly 5.6 days, and follows an unusually eccentric path with an eccentricity near 0.52. The planet was identified by the HATNet t...

WASP-79b is an inflated hot-Jupiter exoplanet that passes in front of its host star, allowing astronomers to study its atmosphere through changes in the observed starlight. Observations with the Hubble Space Telescope and the James Webb Space Telescope have reported atmospheric water vapor. Its larg...

HD 217107 b is a giant exoplanet orbiting the G-type star HD 217107. It completes one orbit in about 7.1 days, placing it in the hot-Jupiter class of close-in giant planets. The planet was discovered through radial-velocity measurements reported in 1998, during the early period of confirmed exoplane...

HD 130322 b is a giant exoplanet orbiting the K-type star HD 130322. It was discovered through stellar radial-velocity measurements and announced in 1999 by a team led by Michel Mayor and Didier Queloz's collaborator Stéphane Udry. The planet completes an orbit in about 10.7 days, so it is classifie...