parallax second definition

  • noun:
    • A unit of length always assess the distances of performers from Earth, defined as the exact distance from the Earth of a star which includes a parallax of 1 arcsecond. Approximately = 3.08568025 × 1016 meters = 3.2616 light-years.
    • An annual parallax of just one second of an arc; -- placed on celestial objects away from solar power system. It really is used to gauge the distance of an astronomical object from world. A star which includes a yearly parallax of just one second of an arc is considered to-be one parsec (3.26 light-years) distant from planet. See parsec inside vocabulary.

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