diff --git a/src/data/defs.txt b/src/data/defs.txt
index 67b4003..194fcba 100644
--- a/src/data/defs.txt
+++ b/src/data/defs.txt
@@ -159,8 +159,16 @@ actor 0 0 0
                 orbitaround jupiter 221900e3
                 collider handcrafted
                 density 10000000000
-                scale 3e3
-                angularmomentum 0 0.03 0
+                scale 2e3
+                angularmomentum 0.4 2.0 0.3
+            actor -40e3 0 90e3 metis
+                name Moonlet
+                relativeto jupiter
+                orbitaround jupiter 221900e3
+                collider handcrafted
+                density 10000000000
+                scale 4e3
+                angularmomentum 0.02 0.01 0.0
         actor 0 0 0 io
             name Io
             id io