   #helper method to summarizeKnownObjects
   averageSeenKnownPoints: (seenKnown) ->
     HALF_WINDOW_HEIGHT = 256
-    HALF_WINDOW_WIDTH =  190
+    SCALING_FACTOR =  190  #aribtirary value less than HALF_WINDOW_HEIGHT
     #average the values of x and y
     seenKnown.x = seenKnown.x_accum /seenKnown.counter
     seenKnown.y = seenKnown.y_accum /seenKnown.counter

  summarizeKnownObjects: ->
    objectsData = @Subject.current?.metadata?.known_objects
    seenKnowns = new Object  
    for frame in ['0001', '0002', '0003', '0004'] when objectsData[frame] isnt undefined 
      for knownObject in [objectsData[frame]...]  when knownObject.good_known 
        objectName = knownObject.object
        if seenKnowns[objectName]
          @updateSeenObject(seenKnowns[objectName], knownObject)
        else # first time seen
          seenKnowns[objectName] = @firstSeen(knownObject)
      #if we found known object show message
      @knownAsteroidMessage.show()

    # grab the point reference before scale
    seenKnown.P_ref = x:  seenKnown.x, y:  seenKnown.y
    #apply scaling 
    seenKnown.x =  seenKnown.x/HALF_WINDOW_HEIGHT * SCALING_FACTOR
    seenKnown.y =  seenKnown.y/HALF_WINDOW_HEIGHT * SCALING_FACTOR
    seenKnown

  appendMetadata: ->
