No there isn’t. The easy way to check is to go to the System Attribute Inspector and type ‘Alias’ in the search box. Note the latter matches from string start and not on partial fragment.
find() always returns all originals and aliases in scope of the query. So if you do a
find for a given (unique) $Name and file out the original the remaining list should be all the aliases. So (not tested) something like:
$MyAliasCount = find($Name=="Test note"&$IsAlias).count