About Lupin's boggart

[wherr009]

No: HPFGUIDX 129960

--- In HPforGrownups at yahoogroups.com, "pippin_999" <foxmoth at q...> wrote:
> Many people have asked why there should be any doubt
> about the identity of Lupin's boggart.
> 
> I would consider it solved, except that in OOP it's still being
> called a silvery orb
> ---

snip:

wherr009

I can see where you are coming from with this, but my big question is;

If the silvery orb is not the moon, then what is it?  And further more what is it that would 
point to Lupin being ESE?