AS3 No keyboard input registering - actionscript-3

Question

so I want an object to orbit around another, but I want it to do it only when the right arrow key is pressed. When I run this program, the orbiter doesn't move at all, even when the right arrow key is pressed and it doesn't trace!
Any help is greatly appreciated!
PS Do I have to use an event listener with KEY_DOWN or can I return a number and check it?
var orbiter:Orbiter = new Orbiter();
var origin:Origin = new Origin();
var angle:Number = 0;
var speed:Number = 1.5;
var radius:Number = 75;
origin.x= 100;
origin.y =100;
addChild(orbiter);
addChild(origin);
stage.addEventListener(Event.ENTER_FRAME, Orbit_Brah);
function Orbit_Brah(event:Event):void
{
var nLeftOrRight = CheckKeyDown;
if (nLeftOrRight == 1)
{
angle += speed;
var rad:Number = angle * (Math.PI / 180);
orbiter.x = origin.x + radius * Math.cos(rad);
orbiter.y = origin.y + radius * Math.sin(rad);
orbiter.rotation = (Math.atan2(orbiter.y-origin.y, orbiter.x-origin.x) * 180 / Math.PI);
}
}
function CheckKeyDown(event:KeyboardEvent):int
{
if (event.keyCode == Keyboard.RIGHT)
{
trace ("Key Press Registered");
return 1;
}
return 0;
}

Answer 1

You will need to add a listener to fetch the info from the KeyboardEvents. Store the info in a variable and use it in your update loop. You may also want to use KeyboardEvent.KEY_UP to check when the keys are released as well. Something like this.
stage.addEventListener(Event.ENTER_FRAME, Update);
stage.addEventListener(KeyboardEvent.KEY_DOWN, OnKeyboardDownHandler);
stage.addEventListener(KeyboardEvent.KEY_UP, OnKeyboardUpHandler);
function Update(pEvent : Event) : void
{
// update code here using stored info
if(_isMovingRight)
{
//
}
}
function OnKeyboardDownHandler(pEvent : KeyboardEvent) : void
{
switch(pEvent.keyCode)
{
case Keyboard.RIGHT:
_isMovingRight = true;
break;
}
}
function OnKeyboardUpHandler(pEvent : KeyboardEvent) : void
{
switch(pEvent.keyCode)
{
case Keyboard.RIGHT:
_isMovingRight = false;
break;
}
}

Answer 2

You're trying too hard. All you need to do after your declarations is:
stage.addEventListener(KeyboardEvent.KEY_DOWN, Orbit_Brah);
function Orbit_Brah(e)
{
if (e.keyCode == Keyboard.RIGHT)
{
angle += speed;
var rad:Number = angle * (Math.PI / 180);
orbiter.x = origin.x + radius * Math.cos(rad);
orbiter.y = origin.y + radius * Math.sin(rad);
orbiter.rotation = (Math.atan2(orbiter.y-origin.y, orbiter.x-origin.x) * 180 / Math.PI);
}
}
That still leaves you with one little math problem, which will be obvious when you run the code, but you can take care of that.