Convert kilometers, astronomical units (AU), light-years, or parsecs with detailed step-by-step calculations and LaTeX-rendered formulas for clarity.
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Exact Conversion Relations
| Relation | Exact Value |
|---|---|
| 1 AU | 149 597 870 700 m (exact, IAU 2012) |
| 1 ly | 9 460 730 472 580 800 m (exact, Julian year) |
| 1 pc | 30 856 775 814 913 700 m (exact) |
| 1 ly in AU | 63 239.726 AU (approx.) |
| 1 pc in AU | 206 265 AU (exact) |
| 1 pc in ly | 3.26156 ly (approx.) |
- Kilometer (km): Metric unit, 1000 meters.
- Astronomical Unit (AU): Exactly 149 597 870 700 meters (IAU definition).
- Light-year (ly): Distance light travels in one Julian year (365.25 days) in vacuum; uses c = 299 792 458 m/s exactly.
- Parsec (pc): Distance where 1 AU subtends 1 arcsecond; exactly 648 000/π AU.