Sidereal

Sidereal ( Latin sidus 'star', 'star'; Greek  σίδηρος sideros 'iron', 'steel'; made from it) stands for:

• the reference to the fixed stars in astronomy
  • Sidereal period , the time it takes for a celestial body to make one true revolution or orbit, as opposed to the synodic period
  • Sidereal year ( sidereal year ), the true duration of one orbit of the earth around the sun
  • Sidereal month , the duration of one orbit of the moon around the earth (27,322 days)
  • Sidereal day , the time of the recurring culmination of a fictional, infinitely distant fixed star (without its own movement)

Astrology:

• Sidereal zodiac , it is based on the ecliptic constellations such as Aries

Occultism:

• something resulting from alien forces, see Paracelsus
• sidereal body, a term used by Paracelsus, see astral body and etheric body
• Sidereal pendulum , an instrument of various esoteric teachings

See also:

• Siderite (iron spar), the name of the mineral is derived from sideros
• Synodic period

Wiktionary: sidereal  - explanations of meanings, word origins, synonyms, translations

This is a disambiguation page for differentiating between several terms identified with the same word.