51 Pegasi b, officially named Dimidium / dɪˈmɪdiəm /, 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.

2024年10月24日 · 51 Pegasi b is a gas giant exoplanet that orbits a G-type star. Its mass is 0.46 Jupiters, it takes 4.2 days to complete one orbit of its star, and is 0.0527 AU from its star. Its discovery was announced in 1995.

51 Pegasi b, the first extrasolar planet confirmed to orbit a sunlike star. It was the first planet found through the wobble it induced in its parent star, and its discovery led to that of thousands more extrasolar planets.

2019年10月8日 · 51 Pegasi b, also called "Dimidium," was the first exoplanet discovered orbiting a Sun-like star in 1995. In 2019, its discoverers, Michel Mayor and Didier Queloz, shared the Nobel Prize in Physics. Here the astronomers talk about the discovery of …

Dimidio 1 (anteriormente llamado 51 Pegasi b o Belerofonte) es un planeta extrasolar, del tipo júpiter caliente, que orbita a la estrella Helvetios.

2019年10月16日 · Its planet, dubbed at the time 51 Pegasi b and now given the name Dimidium by the International Astronomical Union (though some astronomers cling to its informal name of Bellerophon), is a...

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.

51 Pegasi, fifth-magnitude star located 48 light-years away from Earth in the constellation Pegasus, the first sunlike star confirmed to possess a planet. 51 Pegasi became the focus of attention in 1995 when Swiss astronomers Michel Mayor and Didier Queloz announced the detection of a planet, 51 Pegasi b, orbiting it.

2019年10月16日 · Through their survey, the authors found a strange object orbiting the star 51 Pegasi, something twice the size of Jupiter, but about 7 times closer to its star than Mercury is to our sun. This object is now known as 51 Peg b.

Evidence for a spectroscopic direct detection of reflected light from 51 Pegasi b On the Eccentricity Distribution of Short-Period Single-Planet Systems Inclination