diff --git a/src/cosmic/orbit.rs b/src/cosmic/orbit.rs
index 96e8fa92..55901faa 100644
--- a/src/cosmic/orbit.rs
+++ b/src/cosmic/orbit.rs
@@ -874,12 +874,12 @@ impl Orbit {
     #[cfg(feature = "python")]
     #[getter]
     fn y_km(&self) -> f64 {
-        self.x_km
+        self.y_km
     }
     #[cfg(feature = "python")]
     #[getter]
     fn z_km(&self) -> f64 {
-        self.x_km
+        self.z_km
     }
     #[cfg(feature = "python")]
     #[getter]