\begintext
 DynAstVO ephemeris
\begindata
NAIF_BODY_NAME+= ( '874493')
NAIF_BODY_CODE+= ( 20874493)
NAIF_BODY_NAME+= ( '2020 XJ15')
NAIF_BODY_CODE+= ( 20874493)
\begintext
  DynAstVO magnitude parameters.
\begindata
BODY20874493_MAG_HG = ( 21.210 0.150 )