Earth's Equatorial Radius to Parsec Conversion
Convert between Earth's Equatorial Radius and Parsec quickly and accurately.
How to Convert Earth's Equatorial Radius to Parsec
Conversion Formula
Example
Convert 15 R⊕ to pc:
Unit Information
Learn about the length units you're converting between
Earth's Equatorial Radius
R⊕
Definition
Earth's equatorial radius (symbol: R⊕) is a unit of length used in astronomy and geophysics, equal to the radius of Earth at the equator. It is approximately 6,378 kilometers (3,963 miles). This unit is used as a reference for measuring distances in space and planetary science.
History/Origin
Earth's equatorial radius was first accurately measured by Eratosthenes in ancient Greece using geometric methods. Modern measurements use satellite geodesy and radar ranging. The current value is precisely determined through international cooperation and advanced measurement techniques.
Current Use
Earth's equatorial radius is used in astronomy for expressing distances to planets and moons, in space mission planning, and in planetary science for comparing the sizes of celestial bodies. It serves as a fundamental reference unit in space exploration and astrophysics.
Multiplier
6378160
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
Earth's Equatorial Radius to Parsec Conversion Table
| Earth's Equatorial Radius [R⊕] | Parsec [pc] |
|---|---|
| 1 R⊕ | 2E-10 pc |
| 10 R⊕ | 2E-9 pc |
| 25 R⊕ | 5E-9 pc |
| 50 R⊕ | 1E-8 pc |
| 100 R⊕ | 2E-8 pc |
| 0 R⊕ | 0E+0 pc |
| -10 R⊕ | -2E-9 pc |
| -40 R⊕ | -8E-9 pc |
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