WD 1054–226, also known as LP 849-31, is a relatively cool magnitude 16 white dwarf star with a hydrogen atmosphere, in the small southern constellation of Crater[3] located approximately 117 light years away at right ascension 10h57' and declination −22°53' (J2000 epoch).

[4] In 2022 it was reported that the flux of light coming from the star varies continually due to partial obscuring by a ring.

The explanation of this strong 65th harmonic is unknown and the authors of the paper say that the phenomenon is puzzling.

[5][1] The researchers have hypothesized that the clumps are being influenced by a moon-sized object, possibly an exoplanet.

If this is confirmed, it would be the first time that a planet has been found orbiting in the habitable zone of a white dwarf.