Astronomical Unit to Parsec Conversion
Convert between Astronomical Unit and Parsec quickly and accurately.
How to Convert Astronomical Unit to Parsec
Conversion Formula
Example
Convert 15 AU to pc:
Unit Information
Learn about the length units you're converting between
Astronomical Unit
AU
Definition
An astronomical unit (symbol: AU) is a unit of length used in astronomy, equal to the average distance between Earth and the Sun. It is approximately 149.6 million kilometers (93 million miles). The AU is the standard unit for measuring distances within the solar system.
History/Origin
The astronomical unit was first estimated by ancient astronomers using observations of planetary positions. The modern value was determined through radar measurements of Venus and Mercury in the 1960s. It was redefined in 2012 to be exactly 149,597,870,700 meters.
Current Use
The astronomical unit is used throughout astronomy for measuring distances within the solar system, planetary orbits, and spacecraft trajectories. It is essential for space mission planning, planetary science, and understanding the scale of our solar system.
Multiplier
149597870691
Offset
0
Parsec
pc
Definition
A parsec (symbol: pc) is a unit of length used in astronomy, equal to approximately 3.26 light-years or 30.86 trillion kilometers. It is based on the parallax method of measuring stellar distances and is commonly used for distances to nearby stars.
History/Origin
The parsec was introduced in 1913 by the British astronomer Herbert Hall Turner. The name comes from "parallax of one arcsecond" and is based on the trigonometric parallax method. It became the standard unit for stellar distances in astronomy.
Current Use
Parsecs are used in astronomy for measuring distances to stars, star clusters, and nearby galaxies. They are essential for stellar astronomy, galactic structure studies, and understanding the scale of our galaxy. The unit is particularly useful for distances measured using parallax methods.
Multiplier
3E+16
Offset
0
Astronomical Unit to Parsec Conversion Table
| Astronomical Unit [AU] | Parsec [pc] |
|---|---|
| 1 AU | 0.000005 pc |
| 10 AU | 0.000048 pc |
| 25 AU | 0.000121 pc |
| 50 AU | 0.000242 pc |
| 100 AU | 0.000485 pc |
| 0 AU | 0E+0 pc |
| -10 AU | -0.000048 pc |
| -40 AU | -0.000194 pc |
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