J1407b

J1407b is a substellar object, either a free-floating planet or brown dwarf, with a large circumplanetary disk or ring system. It was first detected by automated telescopes in 2007 when its disk eclipsed the star V1400 Centauri, causing a series of dimming events for 56 days. The eclipse by J1407b was not discovered until 2010 by Mark Pecaut and Eric Mamajek, and the discovery was announced in a journal paper published in 2012. J1407b's disk spans a radius of about 90 million kilometers (56 million miles) and consists of many rings and gaps which may indicate moons are forming in orbit around the object. It was initially thought to be orbiting V1400 Centauri, but more recent studies suggest that J1407b is more likely to be an unbound object that coincidentally passed in front of the star. J1407b may have been observed via high-resolution imaging in 2017, which may suggest the object is less than 6 Jupiter masses.