urn:nasa:pds:mex_marsis_optim:geometry:columns_geom 1.0 1.16.0.0 Product_Observational 2007-12-23T17:54:47.7325Z 2021-05-28T06:18:41.0348Z MARS EXPRESS Mission urn:esa:psa:context:investigation:mission.mars_express data_to_investigation MARS EXPRESS Host urn:esa:psa:context:instrument_host:spacecraft.mex is_instrument_host MARSIS Instrument urn:esa:psa:context:instrument:mex.marsis is_instrument Mars Planet urn:nasa:pds:context:target:planet.mars data_to_target columns_geom.tab 0 PDS DSV 1 Column headings of geom tables containing geographic and geometric properties at each radargram frame. 1 Carriage-Return Line-Feed Comma 14 0 Frame 1 ASCII_String Radargram frame Ephemeris Time 2 ASCII_String Ephemeris time of observation Time 3 ASCII_String UTC date and time of observation Latitude 4 ASCII_String Degree Spacecraft footprint latitude on ellipsoid Longitude 5 ASCII_String Degree Spacecraft footprint longitude on ellipsoid Altitude 6 ASCII_String km Spacecraft altitude above ellipsoid SZA 7 ASCII_String Solar zenith angle Channel 1 8 ASCII_String MHz Central frequency used by channel 1 Channel 2 9 ASCII_String MHz Central frequency used by channel 2 X 10 ASCII_String km Spacecraft X position Y 11 ASCII_String km Spacecraft Y position Z 12 ASCII_String km Spacecraft Z position Radial velocity 13 ASCII_String km/s Spacecraft radial velocity Tangential velocity 14 ASCII_String km/s Spacecraft tangential velocity