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51 Pegasi b, officially named Dimidium / d ɪ ˈ m ɪ d i ə m /, is an extrasolar planet approximately 50 light-years (15 parsecs) away in the constellation of Pegasus. It was the first exoplanet to be discovered orbiting a main-sequence star, [ 3 ] the Sun-like 51 Pegasi , and marked a breakthrough in astronomical research.
Together with Michel Mayor in 1995, he discovered 51 Pegasi b, the first extrasolar planet orbiting a Sun-like star, 51 Pegasi. [3] For this discovery, he shared the 2019 Nobel Prize in Physics with Mayor and Jim Peebles. [4] [5] In 2021, he was announced as the founding director of the Center for the Origin and Prevalence of Life at ETH Zurich ...
51 Pegasi b (51 Peg b) was the first discovered exoplanet around a main-sequence star. It orbits very close to the star, experiences estimated temperatures around 1,200 °C (1,500 K; 2,200 °F) and has a mass at least half that of Jupiter .
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Together with Didier Queloz in 1995, he discovered 51 Pegasi b, the first extrasolar planet orbiting a sun-like star, 51 Pegasi. [6] For this achievement, they were awarded the 2019 Nobel Prize in Physics "for the discovery of an exoplanet orbiting a solar-type star" [ 7 ] resulting in "contributions to our understanding of the evolution of the ...
First planet discovered via radial velocity: 51 Pegasi b: 51 Pegasi: 1995 First convincing exoplanet discovered around a Sun-like star. [2] While the minimum mass of HD 114762 b was high enough (11 Jupiter-masses) that it could be a brown dwarf, 51 Peg b's minimum mass meant that it almost certainly was near the mass of Jupiter.
51 Pegasi was the first Sun-like star discovered to have an exoplanet companion; [45] 51 Pegasi b (unofficially named Bellerophon, [46] officially named Dimidium [47]) is a hot Jupiter close to its star, completing an orbit every four days.
51 Pegasi b: In 1995 this became the first exoplanet orbiting a main-sequence star to have its existence confirmed.It is a hot Jupiter with a 4.2-day orbit. [12]47 Ursae Majoris b: In 1996 this Jupiter-like planet was the first long-period planet discovered, orbiting at 2.11 AU from the star with the eccentricity of 0.049.