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OBJECT = COLUMN NAME = "SCET_FRAME_WHOLE" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Number of integer seconds in the spacecraft clock count at which the current frame started" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SCET_FRAME_FRAC" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 2 DESCRIPTION = "Number of 2^-16 seconds in the spacecraft clock count at which the current frame started" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "GEOMETRY_EPHEMERIS_TIME" DATA_TYPE = IEEE_REAL START_BYTE = 7 BYTES = 8 DESCRIPTION = "Number of seconds elapsed since Jan 1, 2000, 12:00 UTC corresponding to SCET_FRAME + 4 * PRI, the time at which data collection for the current frame started" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "GEOMETRY_EPOCH" DATA_TYPE = CHARACTER START_BYTE = 15 BYTES = 23 ITEMS = 23 ITEM_BYTES = 1 DESCRIPTION = "Time expressed in UTC format corresponding to GEOMETRY_EPHEMERIS_TIME" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "MARS_SOLAR_LONGITUDE" DATA_TYPE = IEEE_REAL START_BYTE = 38 BYTES = 8 DESCRIPTION = "Angle between the Mars-Sun line at the time corresponding to GEOMETRY_EPHEMERIS_TIME and the Mars-Sun line at the vernal equinox, in degrees" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "MARS_SUN_DISTANCE" DATA_TYPE = IEEE_REAL START_BYTE = 46 BYTES = 8 DESCRIPTION = "Distance from the centre of Mars to centre of the Sun at the time corresponding to GEOMETRY_EPHEMERIS_TIME, in Km" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ORBIT_NUMBER" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 54 BYTES = 4 DESCRIPTION = "Number of the current orbital revolution of the Mars Express spacecraft around Mars at the time corresponding to GEOMETRY_EPHEMERIS_TIME" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "TARGET_NAME" DATA_TYPE = CHARACTER START_BYTE = 58 BYTES = 6 ITEMS = 6 ITEM_BYTES = 1 DESCRIPTION = "Name of the celestial body being observed by MARSIS at the time corresponding to GEOMETRY_EPHEMERIS_TIME" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "TARGET_SC_POSITION_VECTOR" DATA_TYPE = IEEE_REAL START_BYTE = 64 BYTES = 24 ITEMS = 3 ITEM_BYTES = 8 DESCRIPTION = "Position vector of the Mars Express spacecraft in the reference frame of the target body at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in Km (along x, y, z axes)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SPACECRAFT_ALTITUDE" DATA_TYPE = IEEE_REAL START_BYTE = 88 BYTES = 8 DESCRIPTION = "Distance from the Mars Express spacecraft to the reference surface of the target body measured normal to the surface at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in Km" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SUB_SC_LONGITUDE" DATA_TYPE = IEEE_REAL START_BYTE = 96 BYTES = 8 DESCRIPTION = "East longitude of the point on the target body that lies closest to the Mars Express spacecraft at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in degrees and in the [ 0 -360 ] range" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SUB_SC_LATITUDE" DATA_TYPE = IEEE_REAL START_BYTE = 104 BYTES = 8 DESCRIPTION = "Planetocentric latitude of the point on the target body that lies directly beneath the Mars Express spacecraft at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in degrees" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "TARGET_SC_VELOCITY_VECTOR" DATA_TYPE = IEEE_REAL START_BYTE = 112 BYTES = 24 ITEMS = 3 ITEM_BYTES = 8 DESCRIPTION = "Mars Express spacecraft velocity vector in the reference frame of the target body at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in Km/s" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "TARGET_SC_RADIAL_VELOCITY" DATA_TYPE = IEEE_REAL START_BYTE = 136 BYTES = 8 DESCRIPTION = "Radial component of the Mars Express spacecraft velocity vector in the reference frame of the target body at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in Km/s" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "TARGET_SC_TANG_VELOCITY" DATA_TYPE = IEEE_REAL START_BYTE = 144 BYTES = 8 DESCRIPTION = "Tangential component of the Mars Express spacecraft velocity vector in the reference frame of the target body at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in Km/s" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "LOCAL_TRUE_SOLAR_TIME" DATA_TYPE = IEEE_REAL START_BYTE = 152 BYTES = 8 DESCRIPTION = "Angle between the extension of the vector from the Sun to Mars and the projection on Mars' ecliptic plane of a vector from the center of the target body and the point on the target body surface that lies directly beneath the Mars Express spacecraft at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed on a 24-hour clock with decimal fractions of the hour" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SOLAR_ZENITH_ANGLE" DATA_TYPE = IEEE_REAL START_BYTE = 160 BYTES = 8 DESCRIPTION = "Angle between the zenith and the apparent position of the Sun measured at the point on the target body surface that lies directly beneath the Mars Express spacecraft at the time corresponding to GEOMETRY_EPHEMERIS_TIME, expressed in degrees" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DIPOLE_UNIT_VECTOR" DATA_TYPE = IEEE_REAL START_BYTE = 168 BYTES = 24 ITEMS = 3 ITEM_BYTES = 8 DESCRIPTION = "Unit vector directed along MARSIS dipole Antenna in the reference frame of the target body at the time corresponding to GEOMETRY_EPHEMERIS_TIME" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "MONOPOLE_UNIT_VECTOR" DATA_TYPE = IEEE_REAL START_BYTE = 192 BYTES = 24 ITEMS = 3 ITEM_BYTES = 8 DESCRIPTION = "Unit vector directed along MARSIS monopole Antenna in the reference frame of the target body at the time corresponding to GEOMETRY_EPHEMERIS_TIME" END_OBJECT = COLUMN |