Luciferianism is a belief system that venerates the essential characteristics that are affixed to Lucifer

Lucifer

Traditionally, Lucifer is a name that in English generally refers to the devil or Satan before being cast from Heaven, although this is not the original meaning of the term. In Latin, from which the English word is derived, Lucifer means "light-bearer"...

, originally a name referring to the planet Venus

Venus

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows...

 when it rises ahead of the Sun.

Luciferianism is identified by some people as an auxiliary of Satanism

Satanism

Satanism is a group of religions that is composed of a diverse number of ideological and philosophical beliefs and social phenomena. Their shared feature include symbolic association with, admiration for the character of, and even veneration of Satan or similar rebellious, promethean, and...

, due to the popular identification of Lucifer with Satan

Satan

Satan , "the opposer", is the title of various entities, both human and divine, who challenge the faith of humans in the Hebrew Bible...

. Some Luciferians accept this identification or consider Lucifer as the light bearer aspect of Satan.