PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2006-04-01 INTERCHANGE_FORMAT = ASCII NOTE = "Errata for Cassini ISS Cartographic Map Volumes." END_OBJECT = TEXT END This document contains comments and errors concerning the Cassini ISS cartographic map volumes archive collection. This errata file is modified as problems/issues are encountered during the active mission lifetime, and result in changes or corrections, or notes worthy to the end user. For the most up-to-date version of this file look on the internet web site of the PDS Imaging Node: http://pds-imaging.jpl.nasa.gov/ ------------------------------------------------------------------------- 1. Longitude System Discrepancy The IAU (International Astronomical Union) cartography working group recommended to use the longitude system as defined by Davies and Katayama (1983). This recommendation is described in Seidelmann et al., 2007 and means that crater Salih should have a fixed longitude of 5 degrees West. The ISS team was not aware of this recommendation during the preparation of the Enceladus atlas and noted now that there is a slight difference (about 0.9 degrees) between the longitudes given in this atlas and the IAU definition. Crater Salih is hardly visible in the Cassini images and it is therefore difficult to estimate the exact difference. Fortunately, crater Salih will be imaged with better resolution during the upcoming Enceladus flybys in 2008. The ISS team will use these coming images to determine the exact shift between the current atlas and the IAU definition and will release a corrected (shifted) version of this atlas in 2009. References: Davies, M. E. and Katayama, F. Y., The control networks of Mimas and Enceladus, Icarus, 53, 332-340, 1983. Seidelmann, P. K. and 14 co-authors, Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements: 2006, Celestial Mech. Dyn. Astr., 98, 155-180, 2007.