Win32_LoggedOnUser - The Win32_LoggedOnUser association represents the relationship between a session and the user account using that session. Although the association will usually be one to one - users are possible that involve more than one session. At the termination of the session the association instance is deleted.

Win32_LoggedOnUser
The Win32_LoggedOnUser association represents the relationship between a session and the user account using that session. Although the association will usually be one to one - users are possible that involve more than one session. At the termination of the session the association instance is deleted.
NameSpace Path
\ROOT\CIMV2
PROPERTY	SMS_REPORT	CIMTYPE	DESCRIPTION
Antecedent		Reference	The Antecedent reference is the Account used in the initiation of this session. The account could be either a user account or a system account.
Dependent		Reference	The Dependent reference is the session that the account is currently using.
SAMPLE DATA INSTANCE
[LOCALE(1033): ToInstance Amended] instance of Win32_LoggedOnUser { Antecedent = "\\\\.\\root\\cimv2:Win32_Account.Domain=\"SCCM01\",Name=\"SYSTEM\""; Dependent = "\\\\.\\root\\cimv2:Win32_LogonSession.LogonId=\"999\""; };