\begintext
 DynAstVO ephemeris
\begindata
NAIF_BODY_NAME+= ( '884943')
NAIF_BODY_CODE+= ( 20884943)
NAIF_BODY_NAME+= ( '2017 YC8')
NAIF_BODY_CODE+= ( 20884943)
\begintext
  DynAstVO magnitude parameters.
\begindata
BODY20884943_MAG_HG = ( 18.988 0.150 )