Top Results for Ultrashort Period
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55 Cancri e is a rocky exoplanet orbiting a sun-like star approximately 40 light-years away. Its extremely short orbital period of just 17.8 hours – due to its proximity of 0.015 astronomical units – makes it notable for studying planetary formation around similar stars. The planet’s surface is beli...
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...
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...
CoRoT-7b is an extrasolar planet discovered in 2009 by the French-led CoRoT space telescope, notable for being the first confirmed rocky exoplanet. It orbits a G-type main-sequence star in the constellation Monoceros at a very close distance. This proximity results in an extremely short orbital peri...
Kepler-78b is an Earth-sized rocky exoplanet announced in 2013, notable for being the first exoplanet confirmed to possess an Earth-like density and an iron-rock composition. It was discovered using data from NASA's Kepler space telescope and orbits a K-type star. The planet completes an orbit aroun...
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...
Announced in 2011, Kepler-10b was the first confirmed rocky exoplanet discovered by NASA's Kepler space telescope. It is an ultrashort-period planet, completing a full orbit around its host star in less than a single Earth day. With a density comparable to solid iron, it is categorized as a super-Ea...
HD 3167 b is a transiting super-Earth orbiting the K-type star HD 3167. It completes an orbit in roughly 23 hours and has a radius about 1.6 times that of Earth, placing it among the short-period rocky or volatile-rich planets found by transit surveys. Its bright host star and repeated transits make...
K2-229b is a confirmed rocky exoplanet discovered from transits in data from NASA's K2 mission and announced in 2018. It is slightly larger than Earth but has a high measured density, consistent with a composition containing an unusually large iron core and often compared with Mercury's interior. Th...
Frequently Asked Questions
What leads the Ultrashort Period ranking?
55 Cancri e currently leads the Ultrashort Period results with a displayed score of 8.28/10. This is an editorial ranking result for the items included on this page, not a universal verdict for every use case.
How should I read the score and confidence label?
The 0 to 10 score is Lunoo's ranking judgment. Strong confidence means 10 or more recorded comparison checks, some means 2 to 9, and provisional means fewer than 2.
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