sentences:  L2 Puppis was discovered to be variable by Benjamin Apthorp Gould in 1872, and was listed in Uranometria Argentina as 73 G. Puppis with magnitude 5.10v.It has never been given a formal variable star designation, unlike L1 Puppis which is OU Puppis.L2 Puppis varies in apparent magnitude by about 2 magnitudes with a period of 140 days.