Gliese 229 (also written as Gl 229 or GJ 229) is a multiple system composed of a red dwarf and two brown dwarfs, [4] [13] located 18.8 light years away in the constellation Lepus. The primary component has 58% of the mass of the Sun, [5] 55% of the Sun's radius, [9] and a very low projected rotation velocity of 1 km/s at the stellar equator. [12]

Mar 14, 2025 · GJ 229 A c is a Neptune-like exoplanet that orbits a M-type star. Its mass is 8.58137 Earths, it takes 121.9 days to complete one orbit of its star, and is 0.384 AU from its star. Its discovery was announced in 2020.

Apr 2, 2025 · Gliese 229 is a red main sequence star in the constellation of Lepus. It is too faint to be seen in the southern hemisphere night sky without a telescope. Gliese 229 distance from Earth is 18.77 light years away.

Oct 16, 2024 · Gliese 229B is located 19 light-years away where it orbits a red dwarf called Gliese 229. In 1995, it became the first-known brown dwarf, introducing astronomers to failed stars.

Nov 29, 1995 · The brown dwarf, called Gliese 229B (GL229B), is a small companion to the cool red star Gliese 229, located 19 light-years from Earth in the constellation Lepus. Estimated to be 20 to 50 times the mass of Jupiter, GL229B is too massive and hot to be classified as a planet as we know it, but too small and cool to shine like a star.

Oct 22, 2024 · For 29 years, astronomers thought they were a single brown dwarf named Gliese 229 B. But new observations have revealed Gliese 229 B – the first-known brown dwarf – is actually 2 brown dwarfs,...

Nov 29, 1995 · The brown dwarf, called GL229B, orbits the red dwarf star Gliese 229, located approximately 18 light-years away in the constellation Lepus. The brown dwarf is about 20-50 times the mass of Jupiter, but is so dense it is about the same diameter as Jupiter (80,000 miles).

Oct 16, 2024 · This artwork highlights a pair of recently uncovered brown dwarf twins, named Gliese 229 Ba and Gliese 229 Bb. Gliese 229 B, discovered in 1995, was the first-ever confirmed brown dwarf, but until now astronomers thought they were observing a single body not two.

Oct 10, 2024 · GJ 229 A c is a Confirmed extrasolar planet (exoplanet) that orbits the star Gliese 229 in the constellation of Lepus

Gliese 229 (also designated as Gl 229 or GJ 229) is a binary system that has a red dwarf and the first brown dwarf discovered by astronomers. It is located 18.8 light years away in the constellation Lepus.