Relax light time validation

anise/src/astro/aberration.rs

@@ -35,6 +35,11 @@ use crate::errors::PhysicsError;
 /// For deep space missions, preliminary analysis would likely require both light time correction and stellar aberration. Mission planning and operations will definitely need converged light-time calculations.
 ///
 /// For more details, <https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/req/abcorr.html>.
+///
+/// # SPICE Validation
+///
+/// The validation test `validate_jplde_de440s_aberration_lt` checks 101,000 pairs of ephemeris computations and shows that the unconverged Light Time computation matches the SPICE computations almost all the time.
+/// More specifically, the 99th percentile of error is less than 5 meters, the 75th percentile is less than one meter, and the median error is less than 2 millimeters.
 #[derive(Copy, Clone, Default, PartialEq, Eq)]
 #[cfg_attr(feature = "python", pyclass)]
 #[cfg_attr(feature = "python", pyo3(module = "anise"))]

anise/tests/ephemerides/validation/type02_chebyshev_jpl_de.rs

@@ -74,6 +74,9 @@ fn validate_jplde_de440s_aberration_lt() {
 
  let validator = Validation {
  file_name: output_file_name,
+ max_q75_err: 1e-3,
+ max_q99_err: 5e-3,
+ max_abs_err: 0.09,
  ..Default::default()
  };