\begintext
 DynAstVO ephemeris
\begindata
NAIF_BODY_NAME+= ( '894855')
NAIF_BODY_CODE+= ( 20894855)
NAIF_BODY_NAME+= ( '2018 PG21')
NAIF_BODY_CODE+= ( 20894855)
\begintext
  DynAstVO magnitude parameters.
\begindata
BODY20894855_MAG_HG = ( 19.223 0.150 )