SPICE Data for Viking Mission (Orbiters and Landers) (06/1996 to 07/1980) -------------------------------------------------------- This set of data consists of the SPICE kernels for the two Viking orbiters (VO), made using assorted available data products and no small amount of trial and error, and two SPK files for the landed location of the Viking Landers. NAIF keep this VO data at this location for NAIF's staff convenience only. NAIF recommends the users looking for VO SPICE data obtain it from the VO SPICE PDS data set available on this server at https://naif.jpl.nasa.gov/pub/naif/pds/data/vo1_vo2-m-spice-6-v1.0/vosp_1000