Convert Picoseconds to Sidereal Years
Convert Picoseconds (ps) to Sidereal Years (a_sid) instantly and accurately.
Conversion Formula
a_sid = ps × 3.168753579e-20
About Picoseconds
A picosecond (ps) = 10⁻¹² s; light travels 0.3 mm. Water molecules reorient via H-bond dynamics in ~1-3 ps, explaining microwave absorption. THz spectroscopy probes ps-scale dynamics in molecular systems. Sub-5 nm CMOS gate delays are a few ps; GaAs HEMTs reach ~0.1 ps. Muon mean lifetime = 2,197 ps. OTDR uses ps pulses for millimetre-resolution fibre-fault location. 1 ps = 10⁻¹² s.
About Sidereal Years
The sidereal year = Earth's orbital period relative to the stars = 365.25636 days = 31,558,149.8 s - about 20 min 24 s longer than the tropical year. The gap arises from precession of the equinoxes (~50 arcsec/year westward drift), which causes the tropical year to end slightly before the sidereal orbit completes. JPL DE440 ephemerides and J2000.0 epoch are anchored to the sidereal frame. 1 a_sid = 365.25636 d.
Quick Reference Table
| Picoseconds (ps) | Sidereal Years (a_sid) |
|---|---|
| 1 ps | 3.169 × 10-20 a_sid |
| 2 ps | 6.338 × 10-20 a_sid |
| 5 ps | 1.584 × 10-19 a_sid |
| 10 ps | 3.169 × 10-19 a_sid |
| 25 ps | 7.922 × 10-19 a_sid |
| 50 ps | 1.584 × 10-18 a_sid |
| 100 ps | 3.169 × 10-18 a_sid |