Planē (mythology) referred to, as an abstract concept, in Christian and Gnostic philosophy. Planē (mythology) Planē or "Plane" (, pronounced "pla-neh"), in ancient Greek religion, was an abstract goddess, the personification of the concept of error (her name deriving from the Greek term for 'wandering' [see planet ] ). Though her mythology is obscure, it is known that she was present at the musical competition between the god Apollo and the satyr Marsyas. She is depicted in that scene, looking on in horror at the sight of Marsyas about to be flayed for losing, in a few 4th century mosaics in the
57 Mnemosyne 57 Mnemosyne Mnemosyne ( ; minor planet designation: 57 Mnemosyne) is a large main belt asteroid. It is an S-type asteroid in composition. It was discovered by Robert Luther on 22 September 1859 from Düsseldorf. Its name was chosen by Martin Hoek, director of the Utrecht Observatory, in reference to Mnemosyne, a Titaness in Greek mythology. The orbital period of this asteroid is close to a 2:1 commensurability with Jupiter, which made it useful for perturbation measurements to derive the mass of the planet. Photometry measurements made at the Oakley Observatory during 2006 produced a lightcurve with a rotation period