XZ Tauri

XZ Tauri is a binary system approximately away in the constellation Taurus. The system consists of two T Tauri stars orbiting each other about 6 billion kilometers apart. The system made news in 2000 when a superflare was observed in the system.
A third star, component C, has been observed at a separation of, but subsequent observations failed to find it. The T Tauri star HL Tauri, away, is also sometimes listed as a companion.
The discovery by Pelageya Fedorovna Shajn, that XZ Tauri is a variable star, was announced in 1928.