28° ROSETTA SWT, Data Archiving Working Group, May 19, 2010 VIRTIS PDS ARCHIVES STATUS Maria Teresa Capria and the VIRTIS archiving team 28° ROSETTA SWT, Data Archiving Working Group, May 19, 2010

STATUS OF DELIVERIES Status VOLUME Mission phase DATA_SET_ID ROVIR1001 Commissioning RO-CAL-VIRTIS-2-CVP-V1.0 delivered ROVIR1002 Earth flyby 1 RO-E-VIRTIS-2-EAR1-V1.0 ROVIR1003 Cruise 2 RO-CAL/C-VIRTIS-2-CR2-V1.0 ROVIR1004 Mars swing-by RO-CAL/M-VIRTIS-2-MARS-V1.0 ROVIR1005 Cruise 4-1 RO-X-VIRTIS-2-CR4A-V1.0 ROVIR1006 Steins fly-by RO-A-VIRTIS-2-AST1-V1.0

STATUS OF VIRTIS DATA SETS As a consequence of the Steins data review, a high numbers of RIDS have been received (and accepted). To comply with the requests from the reviewers, we must make changes on the data, ancillary files and documentation. We have decided to update and deliver again all our datasets, from commissioning to Steins. We are also correcting for some ambiguities in the label of raw data. This implied a minor change in the SW generating the data sets. We are a little bit late, because we encountered unexpected difficulties in changing the EGSE SW. We are going to deliver the first updated data set (Commissioning) and have it checked, then the remaining volumes will follow. We are now working on the documentation.

PDS CALIBRATED DATA SETS Calibrated data are ready for the delivery. As soon as we will have delivered the updated raw data sets, the first calibrated data set will be delivered.

GEOMETRY FILES Geometry files are made up by an ASCII label and a qube object (G_qube) without sideplane. The binary section is a long integer, MSB (big endian) encoded array with consistent scaling factors (10000 x angles in degrees, distances in meters). The core of this qube has spatial dimensions (sample, line) consistent with the core of the acquired data qube. Each plane of the qube stores a different geometric information: coordinates (longitude, latitude) computed for every pixel’s corners and center, illumination angles (solar, emission, phase), local true solar time, slant distance, tangent altitude, RA and DEC, SCET time, UTC time (or Julian time), Sun direction’s projection in the instrument’s FOV, subspacecraft point, spacecraft’s relative velocity, etc. These quantities are computed, at the mid-acquisition time of each line, on the IAU reference ellipsoid of the target. Whenever possible and relevant (e.g., Mars), they will be also provided on a DTM.