What is MOA-192b?

Source - Tyrogthekreeper

MOA-2007-BLG-192Lb (often shortened to MOA-192b) is an extrasolar planet. An extrasolar planet is a planet that is located outside of our solar system. The planet is found 3,000 light years away from Earth, and is located in the constellation of Sagittarius. The planet is 3.3 times the size of earth, with a mass of 1.9708227x1025 kilograms. Theory says the planet is made primarily of rock, ice and gases. Some research suggests that MOA-192b could have a thick atmosphere and it has even been speculated that there could be a liquid ocean on its surface. The planet orbits a brown dwarf or low-mass hydrogen burning star that is about one twentieth the mass of the sun. This brown dwarf is approximately 0.62 AU from the MOA-192b, and the planet has a semi major axis of approximately 0.66 AU.

The planet was named MOA as an indication of the observatory used to find it, 2007 for the year the microlensing event occurred, BLG stands for the bulge, and 192 indicates it is the 192nd microlensing observation by the MOA observatory in that year. The L indicates the lens star as opposed to the background star further in the distance, and an added letter b designates it as an additional object in the star's solar system, resulting in the planet being called MOA-2007-BLG-192Lb.

The diagram shown on the right shows the size of MOA-192b in comparison to the size of the planets in our own Solar System.