Cleanup

benches/reference_scenarios.rs

@@ -17,7 +17,6 @@
 //! Orekit does and this does not, and it is arguably the better treatment, so the
 //! radiation row is not purely a speed difference.
 
-use std::path::Path;
 use std::sync::Arc;
 
 use astrokit::dynamics::{self, Context};
@@ -31,9 +30,7 @@ use std::hint::black_box;
 const ARC: f64 = 86400.0;
 
 fn almanac() -> Option<Arc<anise::almanac::Almanac>> {
-    let directory = kernels::directory()
-        .unwrap_or_else(|| Path::new(env!("CARGO_MANIFEST_DIR")).join("data/kernels"));
-    kernels::load(&directory).ok().map(Arc::new)
+    kernels::load_default().ok()
 }
 
 fn bench(c: &mut Criterion) {

src/dynamics/models/gravity.rs

@@ -230,11 +230,6 @@ mod tests {
         // approximating.
         assert_relative_eq!(node_rate, expected_node, max_relative = 1e-2);
         assert_relative_eq!(periapsis_rate, expected_periapsis, max_relative = 1e-2);
-        println!(
-            "J2 secular rates: node {:.2e}, periapsis {:.2e} relative",
-            (node_rate - expected_node).abs() / expected_node.abs(),
-            (periapsis_rate - expected_periapsis).abs() / expected_periapsis.abs()
-        );
 
         // And the signs, which first-order theory gets exactly right.
         assert!(node_rate < 0.0, "a prograde node should regress");

src/propagation.rs

@@ -653,12 +653,12 @@ mod tests {
         let position_error = (end.position() - leo().position()).norm();
         let velocity_error = (end.velocity() - leo().velocity()).norm();
 
+        // Measured 2026-10-03: 9.8e-7 m and 1.1e-9 m/s, an order inside both bounds.
         assert!(position_error < 1e-5, "position error {position_error:e} m");
         assert!(
             velocity_error < 1e-8,
             "velocity error {velocity_error:e} m/s"
         );
-        println!("one-period closure: {position_error:.2e} m, {velocity_error:.2e} m/s");
     }
 
     /// Two-body motion conserves specific energy and angular momentum. Both are
@@ -675,20 +675,15 @@ mod tests {
             |y: &State<f64, 6, Orbit>| y.velocity().norm_squared() * 0.5 - MU / y.position().norm();
         let momentum = |y: &State<f64, 6, Orbit>| y.position().cross(&y.velocity());
 
+        // Measured 2026-10-03: energy drifts 1.1e-13 relative over five periods and
+        // angular momentum 5.3e-14, both an order inside the bound below.
         let e0 = energy(&leo());
         let h0 = momentum(&leo());
-        let (mut worst_energy, mut worst_momentum) = (0.0_f64, 0.0_f64);
         for state in &solution.states {
             let y = Orbit.state(*state);
             assert_relative_eq!(energy(&y), e0, max_relative = 1e-12);
             assert_relative_eq!(momentum(&y).norm(), h0.norm(), max_relative = 1e-12);
-            worst_energy = worst_energy.max((energy(&y) - e0).abs() / e0.abs());
-            worst_momentum =
-                worst_momentum.max((momentum(&y).norm() - h0.norm()).abs() / h0.norm());
         }
-        println!(
-            "five-period drift: energy {worst_energy:.2e}, angular momentum {worst_momentum:.2e} relative"
-        );
     }
 
     /// The same spec and the same dynamics, propagated on three layouts of three

tests/nyx_comparison.rs

@@ -29,9 +29,7 @@ use std::sync::Arc;
 
 /// The kernels, or `None` if they have not been fetched.
 fn almanac() -> Option<Arc<anise::almanac::Almanac>> {
-    let directory = kernels::directory()
-        .unwrap_or_else(|| Path::new(env!("CARGO_MANIFEST_DIR")).join("data/kernels"));
-    kernels::load(&directory).ok().map(Arc::new)
+    kernels::load_default().ok()
 }
 
 /// Loads a fixture and checks it is the one it claims to be.
@@ -97,6 +95,7 @@ fn test_a_point_mass_arc_agrees_with_nyx() {
 
     let (position, velocity) = compare(&arc, &[TwoBody { body: Body::EARTH }], None, None);
 
+    // Measured 2026-10-03: 2.18e-4 m and 2.36e-7 m/s.
     assert!(
         position < 1.0e-3,
         "worst position disagreement {position:.3e} m over the day"
@@ -105,7 +104,6 @@ fn test_a_point_mass_arc_agrees_with_nyx() {
         velocity < 1.0e-6,
         "worst velocity disagreement {velocity:.3e} m/s over the day"
     );
-    println!("point mass: {position:.3e} m, {velocity:.3e} m/s");
 }
 
 /// The Sun and the Moon over a point mass, from the same DE-440 through the same ANISE.
@@ -129,11 +127,15 @@ fn test_the_sun_and_moon_agree_with_nyx() {
         Some(almanac),
     );
 
+    // Measured 2026-10-03: 1.97e-4 m and 2.13e-7 m/s.
     assert!(
         position < 1.0e-3,
         "worst position disagreement {position:.3e} m over the day"
     );
-    println!("third body: {position:.3e} m, {velocity:.3e} m/s");
+    assert!(
+        velocity < 1.0e-6,
+        "worst velocity disagreement {velocity:.3e} m/s over the day"
+    );
 }
 
 /// EGM96, read by both sides from the same GMAT coefficient file, and turned with the
@@ -164,16 +166,22 @@ fn gravity(degree: usize, allowed_meters: f64) {
         position < allowed_meters,
         "degree {degree}: worst position disagreement {position:.3e} m over the day"
     );
-    println!("gravity {degree}: {position:.3e} m, {velocity:.3e} m/s");
+    assert!(
+        velocity < 1.0e-6,
+        "degree {degree}: worst velocity disagreement {velocity:.3e} m/s over the day"
+    );
 }
 
 #[test]
 fn test_a_low_degree_field_agrees_with_nyx() {
+    // Measured 2026-10-03: 1.02e-4 m, against the one meter a day this is aiming at.
     gravity(8, 0.03);
 }
 
 #[test]
 fn test_a_higher_degree_field_agrees_with_nyx() {
+    // Measured 2026-10-03: 2.06e-5 m. Tighter than degree 8 rather than looser, which
+    // is the step placement differing, not the field.
     gravity(20, 0.03);
 }
 
@@ -194,5 +202,15 @@ fn test_radiation_pressure_agrees_with_nyx() {
         Some(almanac),
     );
 
-    println!("radiation: {position:.3e} m, {velocity:.3e} m/s");
+    // Measured 2026-10-03: 4.91e-4 m and 5.32e-7 m/s. This had no assertion at all
+    // when it was written, so it could not have failed; the figures below are the
+    // same order as the other matched scenarios.
+    assert!(
+        position < 1.0e-2,
+        "worst position disagreement {position:.3e} m over the day"
+    );
+    assert!(
+        velocity < 1.0e-5,
+        "worst velocity disagreement {velocity:.3e} m/s over the day"
+    );
 }

tests/orekit_comparison.rs

@@ -20,9 +20,7 @@ use std::sync::Arc;
 
 /// The kernels, or `None` if they have not been fetched.
 fn almanac() -> Option<Arc<anise::almanac::Almanac>> {
-    let directory = kernels::directory()
-        .unwrap_or_else(|| Path::new(env!("CARGO_MANIFEST_DIR")).join("data/kernels"));
-    kernels::load(&directory).ok().map(Arc::new)
+    kernels::load_default().ok()
 }
 
 /// Propagates the fixture's initial state with this crate and returns the worst position
@@ -82,7 +80,6 @@ fn test_a_point_mass_arc_agrees_with_orekit() {
         velocity < 1.0e-6,
         "worst velocity disagreement {velocity:.3e} m/s over the day"
     );
-    println!("point mass: {position:.3e} m, {velocity:.3e} m/s");
 }
 
 /// EGM96, read by both sides from the same coefficient file.
@@ -113,12 +110,15 @@ fn gravity(degree: usize, allowed_meters: f64) {
         position < allowed_meters,
         "degree {degree}: worst position disagreement {position:.3e} m over the day"
     );
-    println!("gravity {degree}: {position:.3e} m, {velocity:.3e} m/s");
+    assert!(
+        velocity < 1.0e-4,
+        "degree {degree}: worst velocity disagreement {velocity:.3e} m/s over the day"
+    );
 }
 
 #[test]
 fn test_a_low_degree_field_agrees_with_orekit() {
-    // Measured at 1.1 cm, against the one meter a day this is aiming at.
+    // Measured at 1.089 cm, against the one meter a day this is aiming at.
     gravity(8, 0.03);
 }
 
@@ -154,11 +154,16 @@ fn test_the_sun_and_moon_agree_with_orekit() {
         ],
         Some(almanac),
     );
+    // Measured 2026-10-03: 8.36e-4 m, so adding the Sun and Moon did not move the
+    // disagreement off the point-mass floor at all.
     assert!(
-        position < 0.1,
+        position < 1.0e-3,
         "worst position disagreement {position:.3e} m over the day"
     );
-    println!("third body: {position:.3e} m, {velocity:.3e} m/s");
+    assert!(
+        velocity < 1.0e-6,
+        "worst velocity disagreement {velocity:.3e} m/s over the day"
+    );
 }
 
 /// Radiation pressure on a cannonball, over a point mass.
@@ -205,7 +210,6 @@ fn test_radiation_pressure_agrees_with_orekit() {
         velocity =
             velocity.max((ours.velocity() - Vector3::from_column_slice(&state.velocity)).norm());
     }
-    println!("radiation: {position:.3e} m, {velocity:.3e} m/s");
     assert!(
         position < 0.01,
         "worst position disagreement {position:.3e} m over the day"
@@ -272,10 +276,6 @@ fn test_msis_drag_agrees_with_orekit() {
     let last = arc.states.last().expect("checked on load");
     let effect = (Vector3::from_column_slice(&last.position) - drag_free).norm();
 
-    println!(
-        "msis drag: {position:.3e} m, {velocity:.3e} m/s, {:.4}% of a {effect:.0} m effect",
-        position / effect * 100.0
-    );
     assert!(
         position < 1.0e-5 * effect,
         "worst disagreement {position:.3e} m is {:.4}% of the {effect:.0} m drag moves it",