Barnard b is a terrestrial exoplanet that orbits a M-type star. Its mass is 0.37 Earths, it takes 3.2 days to complete one orbit of its star, and is 0.02294 AU from its star. Its discovery was announced in 2024.

Barnard's Star b, or Barnard b, is a sub-Earth-mass exoplanet closely orbiting Barnard's Star, a nearby red dwarf star six light-years from Earth. The planet was discovered using radial velocity observations from the ESPRESSO spectrograph on the Very Large Telescope, and was announced on 1 October 2024. [2]

2024年10月2日 · Around a red dwarf known as Barnard's star, which lies just 5.96 light-years away, astronomers have found evidence of an exoplanet. And not just any exoplanet. This fascinating world, known as Barnard b, is tiny, clocking in with a minimum mass of 37 percent of the mass of Earth.

Barnard's Star is a small red dwarf star in the constellation of Ophiuchus. At a distance of 5.96 light-years (1.83 pc) from Earth, it is the fourth-nearest-known individual star to the Sun after the three components of the Alpha Centauri system, and is the closest star in the northern celestial hemisphere. [15] .

2024年10月1日 · González Hernández and colleagues discovered Barnard b using the Very Large Telescope (VLT), an array of four telescopes located on the mountain Cerro Paranal in the Atacama Desert of...

2024年10月3日 · Scientists discovered that Barnard’s Star wobbles a full 20 inches (50 cm) per second — five times Earth’s effect on the Sun — placing Barnard b well within the detection range of ESPRESSO.

2024年11月17日 · For a century, exoplanet hunters have “discovered” planets around a nearby star, only to retract the claims. But the latest find is for real. An artist’s impression of the Barnard Star b, the...

2024年10月5日 · Known as Barnard b, it’s placed a whopping twenty times closer to its star than planet Mercury is to our Sun. With a scorching temperature of around 257 degrees Fahrenheit (125 degrees Celsius) on the surface, it whirls around its star every 3.15 days.

2018年11月14日 · Barnard's Star b is about 3.2 times more massive than our home planet, making it a "super-Earth" — a class of worlds significantly larger than Earth but smaller than ice giants such as...

2024年10月8日 · The planet, dubbed “Barnard b,” orbits its star at only 0.02 astronomical unit, 20 times closer than Mercury orbits the Sun. This distance puts it well inside the star’s habitable zone: With a surface temperature of an estimated 400K (260°F), there is certainly no liquid water on its surface, even though the star itself is 2,500 K cooler ...