Convert Julian Years to Anomalistic Months
Convert Julian Years (a_J) to Anomalistic Months (anom.mo) instantly and accurately.
Conversion Formula
anom.mo = a_J × 13.25552354
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 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
| Julian Years (a_J) | Anomalistic Months (anom.mo) |
|---|---|
| 1 a_J | 13.2555 anom.mo |
| 2 a_J | 26.511 anom.mo |
| 5 a_J | 66.2776 anom.mo |
| 10 a_J | 132.555 anom.mo |
| 25 a_J | 331.388 anom.mo |
| 50 a_J | 662.776 anom.mo |
| 100 a_J | 1325.55 anom.mo |