Shells formed about both hemispheres of positrons are symmetrical about its axis. So axis of positron is also the axis of deuteron. Deuterons are independent subatomic particles. They float around in free space. They may develop linear or angular motions due to external forces.
Deuterons have combined mass of a proton and a neutron.
They have all field forces of positron. They are 3D objects with mass, matter field and inertia. They obey all inertial laws. They may be considered as self-sustaining matter bodies. Deuterons attract each other due to gravity.