diff --git a/Makefile b/Makefile
index dfc6fd5c0..c1945c17a 100644
--- a/Makefile
+++ b/Makefile
@@ -50,6 +50,7 @@ SWIFTEST_MODULES =   swiftest_globals.f90 \
                      whm_classes.f90 \
                      rmvs_classes.f90 \
                      helio_classes.f90 \
+                     symba_classes.f90 \
                      util.f90 \
                      module_nrutil.f90 \
                      swiftest.f90 
diff --git a/src/modules/helio_classes.f90 b/src/modules/helio_classes.f90
index d97a1608c..b7671883a 100644
--- a/src/modules/helio_classes.f90
+++ b/src/modules/helio_classes.f90
@@ -32,7 +32,6 @@ module helio_classes
 
    !! Helio massive body particle class
    type, public, extends(swiftest_pl) :: helio_pl
-      real(DP),     dimension(:,:), allocatable :: ahi         !!  heliocentric acceleration due to interactions
    contains
       procedure, public :: vh2vb    => helio_coord_vh2vb_pl  !! Convert massive bodies from heliocentric to barycentric coordinates (velocity only)
       procedure, public :: vb2vh    => helio_coord_vb2vh_pl  !! Convert massive bodies from barycentric to heliocentric coordinates (velocity only)
diff --git a/src/modules/swiftest.f90 b/src/modules/swiftest.f90
index 951f2c010..2b8749e2f 100644
--- a/src/modules/swiftest.f90
+++ b/src/modules/swiftest.f90
@@ -9,7 +9,7 @@ module swiftest
    use whm_classes
    use rmvs_classes
    use helio_classes
-   !use symba_classes
+   use symba_classes
    use util
    use module_nrutil
    !use advisor_annotate
diff --git a/src/modules/symba_classes.f90 b/src/modules/symba_classes.f90
new file mode 100644
index 000000000..1b3261f62
--- /dev/null
+++ b/src/modules/symba_classes.f90
@@ -0,0 +1,43 @@
+module symba_classes
+   !! author: The Purdue Swiftest Team - David A. Minton, Carlisle A. Wishard, Jennifer L.L. Pouplin, and Jacob R. Elliott
+   !!
+   !! Definition of classes and methods specific to the Democratic Heliocentric Method
+   !! Adapted from David E. Kaufmann's Swifter routine: helio.f90
+   use swiftest_globals
+   use helio_classes, only : helio_cb, helio_pl, helio_tp, helio_nbody_system
+   implicit none
+
+
+   !********************************************************************************************************************************
+   !  symba_nbody_system class definitions and method interfaces
+   !********************************************************************************************************************************
+   type, public, extends(helio_nbody_system) :: symba_nbody_system
+   contains
+   end type symba_nbody_system
+
+   !********************************************************************************************************************************
+   ! symba_cb class definitions and method interfaces
+   !*******************************************************************************************************************************
+   !> Helio central body particle class
+   type, public, extends(helio_cb) :: symba_cb
+   contains
+   end type symba_cb
+
+   !********************************************************************************************************************************
+   !                                    symba_pl class definitions and method interfaces
+   !*******************************************************************************************************************************
+
+   !! Helio massive body particle class
+   type, public, extends(helio_pl) :: symba_pl
+   contains
+   end type symba_pl
+
+   !********************************************************************************************************************************
+   !                                    symba_tp class definitions and method interfaces
+   !*******************************************************************************************************************************
+
+   !! Helio test particle class
+   type, public, extends(helio_tp) :: symba_tp
+   contains
+   end type symba_tp
+end module symba_classes
\ No newline at end of file