Convert Megayears to Anomalistic Months
Convert Megayears (Ma) to Anomalistic Months (anom.mo) instantly and accurately.
Conversion Formula
anom.mo = Ma × 13255251.35
About Megayears
A megayear (1 Ma) = 10⁶ yr ≈ 3.156 × 10¹³ s - the timescale of geology and tectonic evolution. The K-Pg mass extinction at 66.0 Ma; Cambrian explosion ~538.8 Ma; Great Oxygenation Event ~2,400 Ma. Plate motion at 2-10 cm/yr = 200-1,000 km per Ma (Atlantic ~3,000 km wider since Pangaea rifting ~200 Ma ago). Background extinction rate measured in extinctions per million species-years. 1 Ma = 10⁶ yr.
About Anomalistic Months
The anomalistic month = interval between successive Moon perigees = 27.5546 days = 2,380,713.2 s. Slightly longer than the sidereal month because the Moon's perigee precesses, completing one revolution in ~8.85 years. Governs 'supermoons': a full moon at perigee appears ~14% wider and 30% brighter. Tidal forces at perigee are ~30% stronger than at apogee. 1 anom.mo = 27.5546 d.
Quick Reference Table
| Megayears (Ma) | Anomalistic Months (anom.mo) |
|---|---|
| 1 Ma | 13255300 anom.mo |
| 2 Ma | 26510500 anom.mo |
| 5 Ma | 66276300 anom.mo |
| 10 Ma | 132553000 anom.mo |
| 25 Ma | 331381000 anom.mo |
| 50 Ma | 662763000 anom.mo |
| 100 Ma | 1.326 × 109 anom.mo |