Greatly reduce the amount of Near Earth asteroids that get spawned.

Also at the same time try to make sense of the Kop asteroid system.

GameData/RealSolarSystem/RSSKopernicus/Asteroids/Asteroids.cfg

@@ -27,22 +27,25 @@
 
     Asteroid
     {
-        name = Asteroids
-        interval = 15
-        probability = 66
-        minUntrackedLifetime = 1
-        maxUntrackedLifetime = 20
-        spawnGroupMinLimit = 4
-        spawnGroupMaxLimit = 8
-
+        name = RandomSunOrbitingAsteroids
+        interval = 30       // how often to check and create asteroids, in seconds
+        probability = 33    // % chance that an attempt is made to generate new asteroid for current interval
+        minUntrackedLifetime = 1    // minimum number of days that the object will stay alive, unless tracked
+        maxUntrackedLifetime = 20   // maximum number of days that the object will stay alive, unless tracked
+        spawnGroupMinLimit = 4    // Another randomization step applied when current count is between min and max. Lowers the success % the closer current count gets to max.
+        spawnGroupMaxLimit = 8    // Max number of asteroid that can be spawned from this group
+
+        // When a spawn attempt is made the next location is randomly taken from the 3 possible types: Around, Nearby or Flyby.
+        // If the rolled type isn't configured then nothing happens.
+        // For some reason there's also a chance to roll type number 4 which also means that generation doesn't happen.
         Locations
         {
             Around
             {
                 Body
                 {
                     body = Sun
-                    probability = 50
+                    probability = 1   // Not used unless there's more than 1 of the same type defined within a group
                     reached = False
 
                     semiMajorAxis
@@ -82,20 +85,38 @@
                     }
                 }
             }
+        }
+    }
+
+    Asteroid
+    {
+        name = EarthFlybyAsteroids
+        interval = 30
+        probability = 15
+        minUntrackedLifetime = 1
+        maxUntrackedLifetime = 20
+        spawnGroupMinLimit = 1
+        spawnGroupMaxLimit = 3
 
+        Locations
+        {
             Flyby
             {
                 Body
                 {
                     body = Kerbin
-                    probability = 50
+                    probability = 1
                     minDuration = 15
                     maxDuration = 60
                     reached = False
                 }
             }
         }
+    }
 
+    // All groups have same sizes
+    @Asteroid,*
+    {
         Size
         {
             key = 0   0