Hello Vladimir,
To check the latest patch available in SMP for your JAVA or ABAP system , you can follow below independent steps :-
1. In MOPZ itself (under operation/enhancement pack ), when you will try to upgrade your SP level (of netweaver / solution manager or any application selected in MOPZ ) or EHP level ,on selecting automatic calculation, it always checks the latest patches available in SMP and adjust the same in download manager. So, it overcomes the manual efforts in finding each and every peripheral components in SMP individually.
2. Secondly , as Billy has suggested , you can get the details in EWA report for that system (satellite system) by configuring it in your solution manager.
Regards,
Nilutpal.