MOA-2007-BLG-197Lb is a

brown dwarf Brown dwarfs (also called failed stars) are substellar objects that are not massive enough to sustain nuclear fusion of ordinary hydrogen ( 1H) into helium in their cores, unlike a main-sequence star. Instead, they have a mass between the most ...

discovered in August 2015 by the

MOA Moa are extinct giant flightless birds native to New Zealand. The term has also come to be used for chicken in many Polynesian cultures and is found in the names of many chicken recipes, such as Kale moa and Moa Samoa. Moa or MOA may also refe ...

collaboration. It is the first brown dwarf found by the microlensing method to orbit a solar-type star.

References

Exoplanets discovered in 2015 Exoplanets detected by microlensing Brown dwarfs {{Brown-dwarf-stub