- n. A unit of length used to measure the distances of stars from Earth, defined as the distance from the Earth of a star that has a parallax of 1 arcsecond. Approximately = 3.08568025 × 1016 meters = 3.2616 light-years.
GNU Webster's 1913
- n. An annual parallax of one second of an arc; -- applied to celestial objects outside the solar system. It is used to measure the distance of an astronomical object from the Earth. A star which has an annual parallax of one second of an arc is considered to be one parsec (3.26 light years) distant from the earth. See parsec in the vocabulary.
Sorry, no example sentences found.
‘parallax second’ hasn't been added to any lists yet.
Looking for tweets for parallax second.