L1551 IRS 5 is a protostellar envelope surrounding a binary protostar system in the constellation of Taurus 450 light-years from Earth.

The binary system itself is known as L1551 NE,[4] and each star is surrounded by protoplanetary disk.

[5] The system is one of Jim Kaler's The 100 greatest stars.

[6] The binary is surrounded by a complex, gas-rich protoplanetary disk system.

This variable star–related article is a stub.