# Extract from IERS conventions 2003 (equations 40 and 41)

# Mean Anomaly of the Moon
 F1 ≡ l = 134.96340251° + 1717915923.2178''t + 31.8792''t² + 0.051635''t³ - 0.00024470''t⁴

# Mean Anomaly of the Sun
 F2 ≡ l' = 357.52910918° + 129596581.0481"t - 0.5532"t² + 0.000136"t³ - 0.00001149"t⁴

# L - Ω
 F3 ≡ F = 93.27209062° + 1739527262.8478″t - 12.7512″t² - 0.001037″t³ + 0.00000417″t⁴

# Mean Elongation of the Moon from the Sun
 F4 ≡ D = 297.85019547° + 1602961601.2090″t - 6.3706″t² + 0.006593″t³ - 0.00003169″t⁴

# Mean Longitude of the Ascending Node of the Moon
 F5 ≡ Ω = 125.04455501° - 6962890.5431″t + 7.4722″t² + 0.007702″t³ - 0.00005939″t⁴

# Mean Mercury longitude
 F6 ≡ LMe = 4.402608842 + 2608.7903141574 × t

# Mean Venus longitude
 F7 ≡ LVe = 3.176146697 + 1021.3285546211 × t

# Mean Earth longitude
 F8 ≡ LE  = 1.753470314 +  628.3075849991 × t

# Mean Mars longitude
 F9 ≡ LMa = 6.203480913 +  334.0612426700 × t

# Mean Jupiter longitude
F10 ≡ LJ  = 0.599546497 +   52.9690962641 × t

# Mean Saturn longitude
F11 ≡ LSa = 0.874016757 +   21.3299104960 × t

# Mean Uranus longitude
F12 ≡ LU  = 5.481293872 +    7.4781598567 × t

# Mean Neptune longitude
F13 ≡ LNe = 5.311886287 +    3.8133035638 × t

# General accumulated precession
F14 ≡ pA  = 0.02438175 × t + 0.00000538691 × t²
