Convert Julian Years to Yoctoseconds
Convert Julian Years (a_J) to Yoctoseconds (ys) instantly and accurately.
Conversion Formula
ys = a_J × 3.155760000e+31
About Julian Years
The Julian year (a_J) = exactly 365.25 days = 31,557,600 s - the IAU standard year for astronomical distances. The light-year is formally 1 ly = c × 1 a_J = 9.461 × 10¹⁵ m (IAU 2012 B2). Julian years differ from Gregorian years by only 648 s (~10.8 min/year); important for high-precision astrometry or calculations spanning centuries. 1 a_J = 365.25 d = 31,557,600 s.
About Yoctoseconds
A yoctosecond (ys) = 10⁻²⁴ s - the smallest named SI prefix time unit. Light travels ~0.3 fm in 1 ys, about one-tenth the proton charge radius. Strong-force quark binding operates on ~1 ys timescales; W and Z boson lifetimes are ~260-290 ys. Lead-lead collisions at the LHC produce quark-gluon plasma that thermalises within a few ys. These timescales are inferred from decay widths via ΔE × Δt ≥ ℏ. 1 ys = 10⁻²⁴ s.
Quick Reference Table
| Julian Years (a_J) | Yoctoseconds (ys) |
|---|---|
| 1 a_J | 3.156 × 1031 ys |
| 2 a_J | 6.312 × 1031 ys |
| 5 a_J | 1.578 × 1032 ys |
| 10 a_J | 3.156 × 1032 ys |
| 25 a_J | 7.889 × 1032 ys |
| 50 a_J | 1.578 × 1033 ys |
| 100 a_J | 3.156 × 1033 ys |