Convert Earth's polar radius to parsec
Please provide values below to convert Earth's polar radius [R_p] to parsec [pc], or Convert parsec to Earth's polar radius.
How to Convert Earth's Polar Radius to Parsec
1 R_p = 2.0600831203379e-10 pc
Example: convert 15 R_p to pc:
15 R_p = 15 × 2.0600831203379e-10 pc = 3.09012468050685e-09 pc
Earth's Polar Radius to Parsec Conversion Table
| Earth's polar radius | parsec |
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Earth's Polar Radius
The Earth's polar radius is the distance from the center of the Earth to the North or South Pole, approximately 6,356.8 kilometers.
History/Origin
The fact that the Earth is an oblate spheroid, flattened at the poles, has been known since the 18th century. Modern measurements are made with high precision.
Current Use
The Earth's polar radius is a key parameter in geodesy and is used to define the Earth's shape and gravitational field.
Parsec
A parsec is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years. It is the distance at which one astronomical unit subtends an angle of one arcsecond.
History/Origin
The term "parsec" is a portmanteau of "parallax" and "second," coined by British astronomer Herbert Hall Turner in 1913.
Current Use
The parsec is the preferred unit of distance in astronomy and astrophysics for expressing the distances to stars and galaxies.