Which of the known and confirmed exoplanets is the oldest?

PSR B1620–26 is the oldest known Exoplanet; PSR B1620-26 b is an extrasolar planet located approximately 12400 light-years away from Earth in the constellation of Scorpius. It bears the unofficial nicknames "Methuselah" and "the Genesis planet" d... read more

PSR B1620–26 is the oldest known Exoplanet; PSR B1620-26 b is an extrasolar planet located approximately 12,400 light-years away from Earth in the constellation of Scorpius. read more

The Habitable Exoplanets Catalog now has 22 objects of interest including Kapteyn b, the oldest and second closest to Earth potentially habitable exoplanet. Figure 5. Stellar map with the position of all the stars with potentially habitable exoplanets including now Kapteyn's star. read more

PSR B1620-26 b has a mass of 2.5 times that of Jupiter, and orbits at a distance of 23 AU (3.4 billion km), a little larger than the distance between Uranus and the Sun. Each orbit of the planet takes about 100 years. read more