HIP 41378 B
HIP 41378 b (also known as EPIC 211311380 b) is an exoplanet orbiting around the F-type star HIP 41378. It has a radius about 2.6 times that of Earth. See also * Lists of exoplanets * Gliese 1132 b, rocky exoplanet with a confirmed atmosphere. * Mu Arae c, in the constellation Ara * Planetary system A planetary system is a set of gravitationally In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interacti ... References Exoplanets discovered in 2016 Transiting exoplanets HIP 41378 {{extrasolar-planet-stub Cancer (constellation) ...
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Astronomical Unit
The astronomical unit (symbol: au, or or AU) is a unit of length, roughly the distance from Earth to the Sun and approximately equal to or 8.3 light-minutes. The actual distance from Earth to the Sun varies by about 3% as Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once each year. The astronomical unit was originally conceived as the average of Earth's aphelion and perihelion; however, since 2012 it has been defined as exactly (see below for several conversions). The astronomical unit is used primarily for measuring distances within the Solar System or around other stars. It is also a fundamental component in the definition of another unit of astronomical length, the parsec. History of symbol usage A variety of unit symbols and abbreviations have been in use for the astronomical unit. In a 1976 resolution, the International Astronomical Union (IAU) had used the symbol ''A'' to denote a length equal to the astronomical ...
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