Convert Sidereal Months to Attoseconds
Convert Sidereal Months (sid.mo) to Attoseconds (as) instantly and accurately.
Conversion Formula
as = sid.mo × 2.360591570e+24
About Sidereal Months
The sidereal month = Moon's orbital period relative to the fixed stars = 27.3217 days = 2,360,591.6 s - the shortest lunar month. It is ~2.21 days shorter than the synodic month (29.53 d) because Earth advances ~27° along its orbit in the same period; the Moon must travel further to re-align with the Sun. Used in GPS orbit design, tidal modelling, and lunar laser ranging. 1 sid.mo = 27.3217 d.
About Attoseconds
An attosecond (as) = 10⁻¹⁸ s - the timescale of electron dynamics in atoms. The Bohr-model orbital period in hydrogen is ~152 as. Electron tunnelling through atomic potential barriers takes a few hundred as. The 2023 Nobel Prize in Physics (Agostini, Krausz, L'Huillier) honoured methods for generating sub-100 as pulses via high-harmonic generation in Ti:sapphire lasers. 1 as = 10⁻¹⁸ s = 1,000 zs.
Quick Reference Table
| Sidereal Months (sid.mo) | Attoseconds (as) |
|---|---|
| 1 sid.mo | 2.361 × 1024 as |
| 2 sid.mo | 4.721 × 1024 as |
| 5 sid.mo | 1.18 × 1025 as |
| 10 sid.mo | 2.361 × 1025 as |
| 25 sid.mo | 5.901 × 1025 as |
| 50 sid.mo | 1.18 × 1026 as |
| 100 sid.mo | 2.361 × 1026 as |