Celestine API Documentation - v0.2.0
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    Variable OBLIQUITY_COEFFICIENTSConst

    OBLIQUITY_COEFFICIENTS: { c0: number; c1: number; c2: number; c3: number } = ...

    Coefficients for mean obliquity polynomial (degrees).

    Type Declaration

    • c0: number

      Constant term: 23°26'21.448" in degrees

    • c1: number

      Linear term: -46.8150"/century in degrees/century

    • c2: number

      Quadratic term: -0.00059"/century² in degrees/century²

    • c3: number

      Cubic term: +0.001813"/century³ in degrees/century³

    ε = ε₀ + ε₁·T + ε₂·T² + ε₃·T³ where T is Julian centuries from J2000.0

    More precise than just using the constant J2000 value.

    IAU 1976 / Lieske et al. (1977)

    Meeus, "Astronomical Algorithms", Eq. 22.2, p. 147

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