diff --git a/javascript/newsim.js b/javascript/newsim.js
index 8b7dec4..008676e 100644
--- a/javascript/newsim.js
+++ b/javascript/newsim.js
@@ -18,9 +18,9 @@ let Settings = {
 
 function getMass(type){
     switch (type){
-        case entityTypes.COMET: return 1400.0;
-        case entityTypes.METERORITE_SMALL: return 500.0;
-        case entityTypes.METERORITE_LARGE: return 1000.0;
+        case entityTypes.COMET: return Settings.mass[entityTypes.COMET]
+        case entityTypes.METERORITE_SMALL: return Settings.mass[entityTypes.METERORITE_SMALL];
+        case entityTypes.METERORITE_LARGE: return Settings.mass[entityTypes.METERORITE_LARGE];
     }
 }