\begintext
 DynAstVO ephemeris
\begindata
NAIF_BODY_NAME+= ( '884793')
NAIF_BODY_CODE+= ( 20884793)
NAIF_BODY_NAME+= ( '2017 VR12')
NAIF_BODY_CODE+= ( 20884793)
\begintext
  DynAstVO magnitude parameters.
\begindata
BODY20884793_MAG_HG = ( 20.420 0.150 )