/usr/include/orbit-2.0/orbit/orb-core/ is in liborbit2-dev 1:2.14.19-0.3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/orbit-2.0/orbit/orb-core/allocators.h
/usr/include/orbit-2.0/orbit/orb-core/corba-any-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-any.h
/usr/include/orbit-2.0/orbit/orb-core/corba-context-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-context.h
/usr/include/orbit-2.0/orbit/orb-core/corba-defs.h
/usr/include/orbit-2.0/orbit/orb-core/corba-environment-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-environment.h
/usr/include/orbit-2.0/orbit/orb-core/corba-nvlist.h
/usr/include/orbit-2.0/orbit/orb-core/corba-object-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-object.h
/usr/include/orbit-2.0/orbit/orb-core/corba-orb-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-orb.h
/usr/include/orbit-2.0/orbit/orb-core/corba-pobj.h
/usr/include/orbit-2.0/orbit/orb-core/corba-policy-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-string.h
/usr/include/orbit-2.0/orbit/orb-core/corba-typecode-type.h
/usr/include/orbit-2.0/orbit/orb-core/corba-typecode.h
/usr/include/orbit-2.0/orbit/orb-core/iop-defs.h
/usr/include/orbit-2.0/orbit/orb-core/orb-core-types.h
/usr/include/orbit-2.0/orbit/orb-core/orb-core.h
/usr/include/orbit-2.0/orbit/orb-core/orb-types.h
/usr/include/orbit-2.0/orbit/orb-core/orbit-interface.h
/usr/include/orbit-2.0/orbit/orb-core/orbit-object.h
/usr/include/orbit-2.0/orbit/orb-core/orbit-small.h