WISEA J120037.79−784508.3, also called W1200−7845 or 2MASS J12003792−7845082, is a brown dwarf with a primordial disk 333.73 ± 3.13 lightyears from Earth in the 3.7+4.6−1.4 Myr-old ε Chamaeleontis association, currently making it the closest known brown dwarf with an associated circumstellar disk. It was discovered by citizen scientists in 2020 volunteering for the Disk Detective project.