definition parllactic second
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A unit of length, used in astronomy, defined as the distance from the Earth of an object that exhibits a parallax of 1 arcsecond. It is approximately equal to 3.08568025 × 1013 kilometers, or 3.2616 light-years
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- parallax second (plural parallax seconds) A unit of length, used in astronomy, defined as the distance from the Earth of an object that exhibits a parallax of 1 arcsecond. It is approximately equal to 3.08568025 × 1013 kilometers, or 3.2616 light-years.
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