parallax second in Russian
parallax second in Russian
[[паралла́кс]] [[углово́й]] [[секунда|секу́нды]]
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.