Parsec to Earth's Polar Radius Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Parsec to Earth's Polar Radius
To convert pc to light-years: multiply by 3.2616. To convert pc to AU: multiply by 206,265.
1 pc = 3.0857 × 10¹⁶ m = 3.2616 ly = 206,265 AU ≈ 30.857 trillion km.
For example, 1 Parsec (pc) = 4854208335 Earth's Polar Radius (R⊕ (polar)).
Parsec to Earth's Polar Radius — Common Values
| Parsec (pc) | Earth's Polar Radius (R⊕ (polar)) |
|---|---|
| 0.1 | 485420833.5 |
| 0.5 | 2427104168 |
| 1 | 4854208335 |
| 2 | 9708416671 |
| 5 | 24271041680 |
| 10 | 48542083350 |
| 25 | 121355208400 |
| 50 | 242710416800 |
| 100 | 485420833500 |
| 500 | 2.427104e+12 |
| 1000 | 4.854208e+12 |
About Parsec (pc)
Definition
The parsec is an astronomical unit of length defined as the distance at which one astronomical unit subtends an angle of one arcsecond.
Mathematical Relationship
1 pc = 3.0857 × 10¹⁶ m = 3.2616 ly = 206,265 AU ≈ 30.857 trillion km.
Conversion Formula
To convert pc to light-years: multiply by 3.2616. To convert pc to AU: multiply by 206,265.
Practical Applications
Stellar catalogs, galaxy surveys, and cosmological distance calculations.
Interesting Facts
No known star is within 1 parsec of the Sun. Proxima Centauri is 1.30 pc away, making it the nearest star.
Common Mistakes
Pronouncing or interpreting 'parsec' as a unit of time (famously misused in Star Wars). It is strictly a distance unit.
Educational Tips
The parsec is defined geometrically: if a star's parallax (apparent shift over 6 months) is 1 arcsecond, it's 1 pc away.
About Earth's Polar Radius (R⊕ (polar))
Definition
The Earth's polar radius is the distance from Earth's center to either pole, approximately 6,356.752 km.
Mathematical Relationship
R⊕(polar) = 6,356,752.3 m. It is about 21.385 km shorter than the equatorial radius.
Conversion Formula
To convert Earth polar radii to meters: multiply by 6,356,752.3.
Practical Applications
Geodetic calculations, gravity modeling, and precise cartography near the poles.
Interesting Facts
At the poles, you are about 21 km closer to Earth's center than at the equator — you weigh very slightly more!
Common Mistakes
Approximating Earth as a perfect sphere — the difference between equatorial and polar radii matters for precision applications.
Educational Tips
Earth's shape (oblate spheroid) is like a slightly squished ball — wider at the equator, flatter at the poles.