PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM LABEL_REVISION_NOTE = " 10 Mar 1999, A.C.Raugh First draft from available information 04 Feb 2002, A.C.Raugh Changed target name to avoid ambiguity 14 Mar 2004, T.L.Brown Added S10 information" OBJECT = TARGET TARGET_NAME = "JANUS" OBJECT = TARGET_INFORMATION TARGET_TYPE = "SATELLITE" PRIMARY_BODY_NAME = "SATURN" ORBIT_DIRECTION = "PROGRADE" ROTATION_DIRECTION = "SYNCHRONOUS" TARGET_DESC = " Janus (or S10 Janus) and Epimetheus are co-orbital satellites of Saturn, they exchange orbits every four years. The following properties are from K.R. Lang, 'Astrophysical Data: Planets and Stars', p.71: Janus Epimetheus Distance from planet center: 151.4 151.5 km 2.510 2.511 planet radii Orbital period: 0.694 0.695 days Eccentricity: 0.009 0.007 degrees Inclination: 0.3 0.1 degrees" END_OBJECT = TARGET_INFORMATION OBJECT = TARGET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "LANG1992" END_OBJECT = TARGET_REFERENCE_INFORMATION END_OBJECT = TARGET END