Question

define 1 parsec .





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Answer 1

Answer:

Explanation:

The parsec is a unit of length used to measure the large distances to astronomical objects outside the Solar System. A parsec is obtained by the use of parallax and trigonometry, and is defined as the distance at which one astronomical unit subtends an angle of one arcsecond, ie. 1/3600th of a degree.

Astronomical units: 2.06265×105 au; 3.26156

Metric (SI) units: 3.0857×1016 m; ~31 petametres

Answer 2

Answer:

1 parsec is the distance from semi major axis of earth which was subtends an angle of 1 second of arc at the centre of sun