4546B

4546B is an exoplanet orbiting the star Kepler-1649. It is located approximately 300 light-years away in the constellation Cygnus. This planet was discovered by NASA's Kepler Space Telescope. 4546B is roughly 1.06 times the size of Earth. It orbits Kepler-1649 within its star's habitable zone, the region where conditions might be suitable for liquid water to exist on a planet's surface.

The planet completes one orbit around its star every 19.5 Earth days. Kepler-1649 is a red dwarf star, smaller and cooler than our Sun. This means that the habitable zone around Kepler-1649 is much closer to the star than Earth's habitable zone is to the Sun. 4546B receives about 75% of the light energy that Earth receives from the Sun.

Based on its size and the amount of starlight it receives, 4546B is considered a potentially habitable exoplanet. However, many factors influence a planet's actual habitability, including its atmospheric composition, presence of a magnetic field, and geological activity, which are currently unknown for 4546B. Further observations and research are needed to better understand this distant world.