4.3 parsec to light years how to#

You can find metric conversion tables for SI units, as well as English units, currency, and other data. More specifically, a light year is defined as the distance that a photon would travel, in free space and infinitely far away from any gravitational or magnetic fields, in one Julian year (365.25 days of 86400 seconds each).Ĭ provides an online conversion calculator for all types of measurement units. It stands for 'parallax of one arc second', and is approximately 19,131,554,073,600 (19 trillion) miles.Ī light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 × 1012 kilometres (9.46 petametres, or about 5.88 × 1012 (nearly six trillion) miles). For example, the nearest star system to earth is Alpha Centauri, which is at a distance of 4.3.

4.3 parsec to light years how to#

The parsec (symbol pc) is a unit of length used in astronomy. How to Measure Light Years Parsec: Another Unit of Distance. The unit most commonly used in professional astronomy is the parsec (symbol: pc, about 3.26 light-years) which derives from astrometry it is the distance at which one astronomical unit (au) subtends an angle of one second of arc. Light years to parsecs, or enter any two units below: Enter two units to convert From: A light-year, alternatively spelled light year. You can do the reverse unit conversion from