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Mars time-scale constants and conversion methods (MSD, MTC, Ls, LMST, LTST, Mars Year).
Constants§
- MARS_
EOT_ COEFF_ 2LS - Equation-of-Time coefficients for LTST (from NASA GISS Mars24 / AM2000).
- MARS_
EOT_ COEFF_ 4LS - MARS_
EOT_ COEFF_ 6LS - MARS_
LS_ ALPHA_ FMS0 - MARS_
LS_ ALPHA_ FMS_ RATE - MARS_
LS_ M0 - Areocentric solar longitude (Ls) constants from the current NASA GISS Mars24 algorithm (AM2000 short series, updated 2025-01-07).
- MARS_
LS_ M_ RATE - MARS_
REF_ TT - Precomputed numerical values of the Mars reference epoch on the TT scale (seconds since J2000).
- MARS_
REF_ TT_ ATTOS - MARS_
SOL_ ATTOS - Martian mean sol length in attoseconds (88_775.24414688 s × 10¹⁸, integer matching the current NASA divisor).
- MARS_
SOL_ LENGTH_ SEC - mean length of one Martian sol in Earth seconds. Current NASA GISS Mars24 value (updated 2025-01-07): 1.0274912517 Earth days.
- MARS_
TROPICAL_ YEAR_ DAYS - Length of one Mars tropical year in Earth days (NASA GISS Mars24, 2025).
- MARS_
YEAR_ EPOCH_ JD - Mars Year epoch: JD 2435208.456 TT (northern vernal equinox Ls = 0° on 1955 April 11).