Constants & Units · constant
Astronomical unit
au = 1.495 978 707 × 10¹¹ m
- Unit
- m
- Value
- 1.495 978 707 × 10¹¹
- Exact
- yes
- Note
- The Earth–Sun distance, fixed by definition since 2012 rather than measured.
- Symbol
- au
- Category
- Astronomical
- Numeric
- 149597870700
- Uncertainty
- exact (defined)
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