_sidebar.md

@@ -23,7 +23,7 @@
 [Satellite](Satellite)<br>
 [Satellite Reference System](SatteliteReferenceSystem)<br>
 [Visibility Cone](VisibilityCone)<br>
-[Terrestrial Reference System](TerrestrialReferenceSystem)<br>
+[Central Body Reference System](CentralBodyReferenceSystem)<br>
 </details>
 
 <details>