diff --git a/.idea/lox-space.iml b/.idea/lox-space.iml
index 7e2df88b..5407fa9f 100644
--- a/.idea/lox-space.iml
+++ b/.idea/lox-space.iml
@@ -12,6 +12,7 @@
       <sourceFolder url="file://$MODULE_DIR$/crates/lox-space/examples" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/crates/lox-space/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/crates/lox_py/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/crates/lox_core/benches" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
       <excludeFolder url="file://$MODULE_DIR$/tools/lox_gen/target" />
     </content>
diff --git a/crates/lox_core/src/bodies.rs b/crates/lox_core/src/bodies.rs
index 83d85832..1f938e81 100644
--- a/crates/lox_core/src/bodies.rs
+++ b/crates/lox_core/src/bodies.rs
@@ -10,11 +10,8 @@ use std::f64::consts::PI;
 
 use crate::time::constants::f64::{SECONDS_PER_DAY, SECONDS_PER_JULIAN_CENTURY};
 
-pub mod barycenters;
-pub mod minor;
-pub mod planets;
-pub mod satellites;
-pub mod sun;
+mod generated;
+pub use generated::*;
 
 /// NaifId is implemented for all bodies.
 pub trait NaifId: Copy {
diff --git a/crates/lox_core/src/bodies/generated.rs b/crates/lox_core/src/bodies/generated.rs
new file mode 100644
index 00000000..bbef07ca
--- /dev/null
+++ b/crates/lox_core/src/bodies/generated.rs
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2023. Helge Eichhorn and the LOX contributors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+//! generated holds trait implementations that have been generated by `lox_gen`, separating
+//! generated code from manual implementations.
+//!
+//! Artifacts in its submodules are intended to be transparently re-exported.
+
+pub mod barycenters;
+pub mod minor;
+pub mod planets;
+pub mod satellites;
+pub mod sun;
diff --git a/crates/lox_core/src/bodies/barycenters.rs b/crates/lox_core/src/bodies/generated/barycenters.rs
similarity index 98%
rename from crates/lox_core/src/bodies/barycenters.rs
rename to crates/lox_core/src/bodies/generated/barycenters.rs
index fa2d6e71..f5afb802 100644
--- a/crates/lox_core/src/bodies/barycenters.rs
+++ b/crates/lox_core/src/bodies/generated/barycenters.rs
@@ -8,7 +8,7 @@
 
 // Auto-generated by `lox_gen`. Do not edit!
 
-use super::{
+use crate::bodies::{
     EarthBarycenter, JupiterBarycenter, MarsBarycenter, MercuryBarycenter, NeptuneBarycenter,
     PlutoBarycenter, PointMass, SaturnBarycenter, UranusBarycenter, VenusBarycenter,
 };
@@ -60,7 +60,7 @@ impl PointMass for PlutoBarycenter {
 #[cfg(test)]
 #[allow(clippy::approx_constant)]
 mod tests {
-    use super::*;
+    use crate::bodies::*;
     #[test]
     fn test_point_mass_1() {
         assert_eq!(
diff --git a/crates/lox_core/src/bodies/minor.rs b/crates/lox_core/src/bodies/generated/minor.rs
similarity index 99%
rename from crates/lox_core/src/bodies/minor.rs
rename to crates/lox_core/src/bodies/generated/minor.rs
index 7fecf53a..0a2c155e 100644
--- a/crates/lox_core/src/bodies/minor.rs
+++ b/crates/lox_core/src/bodies/generated/minor.rs
@@ -8,7 +8,7 @@
 
 // Auto-generated by `lox_gen`. Do not edit!
 
-use super::{
+use crate::bodies::{
     Bennu, Braille, Ceres, Dactyl, Davida, Ellipsoid, Eros, Gaspra, Ida, Itokawa, Kleopatra,
     Lutetia, Mathilde, NutationPrecessionCoefficients, Pallas, PointMass, PolynomialCoefficients,
     Psyche, RotationalElements, Steins, Toutatis, TriAxial, Vesta, WilsonHarrington,
@@ -448,7 +448,7 @@ impl RotationalElements for Bennu {
 #[cfg(test)]
 #[allow(clippy::approx_constant)]
 mod tests {
-    use super::*;
+    use crate::bodies::*;
     #[test]
     fn test_tri_axial_9511010() {
         assert_eq!(Gaspra::polar_radius(), 4.4f64);
diff --git a/crates/lox_core/src/bodies/planets.rs b/crates/lox_core/src/bodies/generated/planets.rs
similarity index 99%
rename from crates/lox_core/src/bodies/planets.rs
rename to crates/lox_core/src/bodies/generated/planets.rs
index 7e45b6d7..50958b02 100644
--- a/crates/lox_core/src/bodies/planets.rs
+++ b/crates/lox_core/src/bodies/generated/planets.rs
@@ -8,7 +8,7 @@
 
 // Auto-generated by `lox_gen`. Do not edit!
 
-use super::{
+use crate::bodies::{
     Earth, Ellipsoid, Jupiter, Mars, Mercury, Neptune, NutationPrecessionCoefficients, Pluto,
     PointMass, PolynomialCoefficients, RotationalElements, Saturn, Spheroid, Uranus, Venus,
 };
@@ -746,7 +746,7 @@ impl RotationalElements for Pluto {
 #[cfg(test)]
 #[allow(clippy::approx_constant)]
 mod tests {
-    use super::*;
+    use crate::bodies::*;
     #[test]
     fn test_point_mass_199() {
         assert_eq!(Mercury::gravitational_parameter(), 22031.868551400003f64);
diff --git a/crates/lox_core/src/bodies/satellites.rs b/crates/lox_core/src/bodies/generated/satellites.rs
similarity index 99%
rename from crates/lox_core/src/bodies/satellites.rs
rename to crates/lox_core/src/bodies/generated/satellites.rs
index 5fb9dda3..cc091e1c 100644
--- a/crates/lox_core/src/bodies/satellites.rs
+++ b/crates/lox_core/src/bodies/generated/satellites.rs
@@ -8,7 +8,7 @@
 
 // Auto-generated by `lox_gen`. Do not edit!
 
-use super::{
+use crate::bodies::{
     Adrastea, Aegaeon, Aegir, Aitne, Albiorix, Amalthea, Ananke, Anthe, Aoede, Arche, Ariel, Atlas,
     Autonoe, Bebhionn, Belinda, Bergelmir, Bestla, Bianca, Caliban, Callirrhoe, Callisto, Calypso,
     Carme, Carpo, Chaldene, Charon, Cordelia, Cressida, Cupid, Cyllene, Daphnis, Deimos, Desdemona,
@@ -4856,7 +4856,7 @@ impl RotationalElements for Styx {
 #[cfg(test)]
 #[allow(clippy::approx_constant)]
 mod tests {
-    use super::*;
+    use crate::bodies::*;
     #[test]
     fn test_point_mass_301() {
         assert_eq!(Moon::gravitational_parameter(), 4902.80011845755f64);
diff --git a/crates/lox_core/src/bodies/sun.rs b/crates/lox_core/src/bodies/generated/sun.rs
similarity index 98%
rename from crates/lox_core/src/bodies/sun.rs
rename to crates/lox_core/src/bodies/generated/sun.rs
index 164f8e7d..b0b41446 100644
--- a/crates/lox_core/src/bodies/sun.rs
+++ b/crates/lox_core/src/bodies/generated/sun.rs
@@ -8,7 +8,7 @@
 
 // Auto-generated by `lox_gen`. Do not edit!
 
-use super::{
+use crate::bodies::{
     Ellipsoid, NutationPrecessionCoefficients, PointMass, PolynomialCoefficients,
     RotationalElements, Spheroid, Sun,
 };
@@ -48,7 +48,7 @@ impl RotationalElements for Sun {
 #[cfg(test)]
 #[allow(clippy::approx_constant)]
 mod tests {
-    use super::*;
+    use crate::bodies::*;
     #[test]
     fn test_point_mass_10() {
         assert_eq!(Sun::gravitational_parameter(), 132712440041.27942f64);
diff --git a/tools/lox_gen/Cargo.lock b/tools/lox_gen/Cargo.lock
index 0d4e824f..dad0f53a 100644
--- a/tools/lox_gen/Cargo.lock
+++ b/tools/lox_gen/Cargo.lock
@@ -20,6 +20,12 @@ version = "0.24.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5418c17512bdf42730f9032c74e1ae39afc408745ebb2acf72fbc4691c17945"
 
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
 [[package]]
 name = "lox_core"
 version = "0.1.0"
@@ -35,6 +41,7 @@ dependencies = [
 name = "lox_gen"
 version = "0.1.0"
 dependencies = [
+ "lazy_static",
  "lox_core",
  "lox_io",
  "proc-macro2",
diff --git a/tools/lox_gen/Cargo.toml b/tools/lox_gen/Cargo.toml
index 72c9b9d4..5943c6dd 100644
--- a/tools/lox_gen/Cargo.toml
+++ b/tools/lox_gen/Cargo.toml
@@ -11,3 +11,4 @@ quote = "1.0"
 lox_io = { path = "../../crates/lox_io" }
 lox_core = { path = "../../crates/lox_core" }
 thiserror = "1.0.50"
+lazy_static = "1.4.0"
diff --git a/tools/lox_gen/src/main.rs b/tools/lox_gen/src/main.rs
index fdcfea02..ca8ee2cd 100644
--- a/tools/lox_gen/src/main.rs
+++ b/tools/lox_gen/src/main.rs
@@ -6,9 +6,10 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+use lazy_static::lazy_static;
 use std::collections::HashSet;
 use std::fs;
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use std::process::Command;
 
 use proc_macro2::{Ident, TokenStream};
@@ -80,14 +81,21 @@ const COPYRIGHT_NOTICE: &str = "/*
 
 const AUTO_GENERATION_NOTICE: &str = "// Auto-generated by `lox_gen`. Do not edit!\n\n";
 
+lazy_static! {
+    static ref TARGET_DIR: PathBuf = {
+        let parent = Path::new(file!()).parent().unwrap();
+        parent.join(Path::new("../../../crates/lox_core/src/bodies/generated/"))
+    };
+}
+
 fn write_file(file: &str, bodies: &[Body], generators: &[Generator], data: &Data) {
-    let path = format!("../../../crates/lox_core/src/bodies/{file}.rs");
     let mut code = String::from(COPYRIGHT_NOTICE);
     code.push_str(AUTO_GENERATION_NOTICE);
     code.push_str(&generate_code(bodies, generators, data));
-    let file = Path::new(file!());
-    let out = file.parent().unwrap().join(path);
+
+    let out = TARGET_DIR.join(format!("{}.rs", file));
     fs::write(&out, code).expect("file should be writeable");
+
     Command::new("rustfmt")
         .args([out.to_str().unwrap()])
         .status()
@@ -108,14 +116,14 @@ fn generate_code(bodies: &[Body], generators: &[Generator], data: &Data) -> Stri
 
     let imports_iter = imports.iter();
     let module = quote! {
-        use super::{#(#imports_iter),*};
+        use crate::bodies::{#(#imports_iter),*};
 
         #code
 
         #[cfg(test)]
         #[allow(clippy::approx_constant)] // at least one parsed constant is close to TAU
         mod tests {
-            use super::*;
+            use crate::bodies::*;
 
             #tests
         }