Convert Earth's polar radius to Earth's equatorial radius
Please provide values below to convert Earth's polar radius [R_p] to Earth's equatorial radius [R_e], or Convert Earth's equatorial radius to Earth's polar radius.
1 R_p = 0.996647187102 R_e. To convert Earth's polar radius to Earth's equatorial radius, multiply the value by 0.996647187102; to go the other way, divide by it (1 R_e = 1.00336409207 R_p). Both units measure length and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 R_p = 0.996647187102 R_e
- 1 R_e = 1.00336409207 R_p
- 10 R_p = 9.96647187102 R_e
- 100 R_p = 99.6647187102 R_e
How to Convert Earth's Polar Radius to Earth's Equatorial Radius
1 R_p = 0.996647187101814 R_e
Example: convert 15 R_p to R_e:
15 R_p = 15 × 0.996647187101814 R_e = 14.9497078065272 R_e
Earth's Polar Radius to Earth's Equatorial Radius Conversion Table
| Earth's polar radius | Earth's equatorial radius |
|---|---|
| 1 R_p | 0.996647187102 R_e |
| 2 R_p | 1.9932943742 R_e |
| 3 R_p | 2.98994156131 R_e |
| 5 R_p | 4.98323593551 R_e |
| 10 R_p | 9.96647187102 R_e |
| 20 R_p | 19.932943742 R_e |
| 50 R_p | 49.8323593551 R_e |
| 100 R_p | 99.6647187102 R_e |
| 500 R_p | 498.323593551 R_e |
| 1000 R_p | 996.647187102 R_e |
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.
Earth's Equatorial Radius
The Earth's equatorial radius is the distance from the center of the Earth to the equator, approximately 6,378.1 kilometers.
History/Origin
The size and shape of the Earth have been a subject of study since ancient times. Modern measurements are made using satellite geodesy.
Current Use
The Earth's equatorial radius is a fundamental parameter in geodesy, geophysics, and astronomy. It is used in cartography and for defining the shape of the Earth.
Frequently Asked Questions
What is 1 Earth's polar radius in Earth's equatorial radius?
1 Earth's polar radius (R_p) = 0.996647187102 Earth's equatorial radius (R_e).
How do you convert Earth's polar radius to Earth's equatorial radius?
Multiply the Earth's polar radius value by 0.996647187102. For example, 25 R_p × 0.996647187102 = 24.9161796775 R_e.
What is 10 Earth's polar radius in Earth's equatorial radius?
10 R_p = 9.96647187102 R_e.
Which unit is larger, the Earth's polar radius or the Earth's equatorial radius?
The Earth's equatorial radius is the larger unit: 1 R_p equals only 0.996647187102 R_e.