code: def earth_tilt(t):
      
      dp, de = t._nutation_angles
      c_terms = equation_of_the_equinoxes_complimentary_terms(t.tt) / ASEC2RAD
  
      d_psi = dp * 1e-7 + t.psi_correction
      d_eps = de * 1e-7 + t.eps_correction
  
      mean_ob = mean_obliquity(t.tdb)
      true_ob = mean_ob + d_eps
  
      mean_ob /= 3600.0
      true_ob /= 3600.0
  
      eq_eq = d_psi * cos(mean_ob * DEG2RAD) + c_terms
      eq_eq /= 15.0
  
      return mean_ob, true_ob, eq_eq, d_psi, d_eps
docs: Return a tuple of information about the earth's axis and position.
  
      `t` - A Time object.
  
      The returned tuple contains five items:
  
      ``mean_ob`` - Mean obliquity of the ecliptic in degrees.
      ``true_ob`` - True obliquity of the ecliptic in degrees.
      ``eq_eq`` - Equation of the equinoxes in seconds of time.
      ``d_psi`` - Nutation in longitude in arcseconds.
      ``d_eps`` - Nutation in obliquity in arcseconds.