I know this will work in 10.4.2 :
select
syscolumns.name as [Column],
syscolumns.colid
from
sysobjects, syscolumns
where
sysobjects.id = syscolumns.id and
sysobjects.name = 'Nodes' and
colid > 82
But I'm hoping someone has a better way of extracting a list of custom properties.