LP 40-365 is a low-mass white dwarf star in the constellation Ursa Minor.

It travels at high speed through the Milky Way and has a very unusual elemental composition, lacking hydrogen, helium or carbon.

It may have been produced in a subluminous Type Iax supernova that failed to destroy its host star totally.

[2] [4][5] The "LP" name is derived from the Luyten-Palomar proper motion catalogue in which it appeared in the 1960s.

This article about a white dwarf is a stub.