Returns the name of the object with the object ID you specify; up to 255 bytes in length.
object_name(object_id[, database_id])
select object_name(208003772)
------------------------------ titles
select object_name(1, 1)
------------------------------ sysobjects
Transact-SQL Users Guide
sp_help in Reference Manual: Procedures
ANSI SQL – Compliance level: Transact-SQL extension.
Any user can execute object_name.