Oph 11 b is the fainter half of a very wide, very low-mass pair of objects, also known as Oph 1622-2405, and whether it counts as a planet is disputed. The pair are separated by about 243 times Earth's distance from the Sun, then the widest known separation for a binary of such low mass. The NASA Exoplanet Archive lists the fainter one as a planet of about 14 Jupiter masses, about 440 light-years away.
The pair caught attention in 2006, when Ray Jayawardhana and V. Ivanov estimated masses of about 13 to 15 and 7 to 8 Jupiter masses: two planet-mass objects orbiting each other with no star. Other astronomers soon disagreed. Later in 2006 a team led by Laird Close, using the Keck telescope's adaptive optics, took the first separate spectra of the two and estimated 17 and 14 Jupiter masses, concluding the system is unlikely to be a planetary-mass binary, though it has one of the lowest masses and weakest gravitational bonds of any binary known.
In 2007 a team led by K. L. Luhman went further. Their spectra gave later spectral types for both objects than earlier work, implying masses of about 0.055 and 0.019 solar masses, roughly 58 and 20 Jupiter masses, well above the masses of known planets. They also found the pair older than first thought, closer to the Upper Scorpius group than to the young Ophiuchus cloud it appears against. The answer depends on the models used to turn brightness into mass, which are least certain for very young objects. Close's team suggested that wide, fragile pairs like this one tend to be pulled apart as they age.