J1407b is a gas giant and is believed to be several times the mass of Jupiter (estimated at 10 to 40 times Jupiter’s mass). Its most remarkable feature is its enormous ring system, which is about 200 times larger than Saturn's rings. 

J1407b is located about 434 light-years from Earth, orbiting the star J1407 in the constellation Centaurus.

There’s no solid surface on J1407b—it's mostly a swirling mass of gas. However, its atmosphere could have complex weather patterns, clouds, and storms. The primary visual feature is its enormous ring system. 

As a gas giant, J1407b is primarily composed of hydrogen and helium, much like Jupiter and Saturn. It likely has a small rocky or metallic core surrounded by thick layers of gas. 

Though no moons have been directly observed yet, it's highly likely that moons could be forming within the planet’s massive rings. The ring system itself hints at the possibility of the formation of exomoons, but their existence is yet to be confirmed. 

J1407b boasts an enormous ring system much larger than Saturn's, spanning up to 90 million kilometers. This unique feature invites questions about moon formation and planetary ring dynamics. 

Discovery Method: Transit Method

Year Discovered: 2012

Details: J1407b was discovered through the transit method, observed using the SuperWASP (Wide Angle Search for Planets) telescope. The planet is notable for its enormous ring system, which is much larger than Saturn’s, indicating complex and fascinating characteristics for such exoplanets.