diff --git a/docs/TODO b/docs/TODO
index 3db82cb..3e2473b 100644
--- a/docs/TODO
+++ b/docs/TODO
@@ -9,21 +9,21 @@ If you see modifications to this file in git status, IGNORE them and do not comm
     - remember to periodically check the reference docs against new changes
 
 === Simulation Config Files ===
-    - decide on an easier to read format, likely TOML or JSON
     - the config_loader module needs to be refactored, and likely needs some
         logic moved to the bodies module (which should probably be renamed
         simulation)
     - config file validation
         - check for unrealistic orbital parameters
-        - update remaining configs/* to new format
-        - we need to keep an example with a binary system
         - relative coordinates for child bodies
-    - do we still need the --headless option now that we have a full test harness?
 
 === Simulation/Physics ===
     - remove bodies on non closed orbits after they are a certain distance from
         the root body, or bary-center
     - add tests for each orbit type
+    - add and test moons around planets
+    - add and test 'satellite' objects that should not be in parents or have a
+        SOI
+    - move the example binary system config to test configs, and make some tests
 
 === CTAGS ===
     - previously we've used the Makefile to generate tags when building,