urn:nasa:pds:mess_mascs:data_cdr:umc_ob3_99_13223_090645_sci 1.0 1.11.0.0 Product_Observational 2019-10-07 1.0 This label was modified to convert to PDS4. 2013-08-11T09:06:45Z 2013-08-11T09:11:06Z Science Calibrated Ultraviolet Atmosphere Atmospheres Structure MESSENGER Mission urn:nasa:pds:context:investigation:mission.messenger data_to_investigation MESS MASCS Instrument urn:nasa:pds:context:instrument:instrument.mascs__mess is_instrument MESSENGER Spacecraft urn:nasa:pds:context:instrument_host:spacecraft.mess is_instrument_host MERCURY Planet urn:nasa:pds:context:target:planet.mercury data_to_target Mercury Orbit Year 3 2/018536005.125 2/018536266.197 UVVSCMUVSCI PIPE-MASCS2CDR 9.3 CK msgr20130810.bc CK msgr20130811.bc CK msgr20130812.bc FK msgr_dyn_v600.tf FK msgr_v231.tf IK msgr_mascs_v100.ti LSK naif0011.tls PCK pck00010_MSGR_v21.tpc SCLK messenger_2548.tsc SPK msgr_20040803_20150430_od431sc_2.bsp All MESSENGER geometry data are contained in a separate data set. This data set was cumulatively delivered in conjunction with each archive delivery as described in the MESSENGER Data Management and Archiving Plan (DMAP). This data set contains geometry data in the form of SPICE kernels. The data set is archived by the PDS NAIF Node in the MESSSP_1000 volume, PDS data set ID MESS-E/V/H/SPICE-6-V1.0. It is available from the NAIF online archives at http://naif.jpl.nasa.gov. urn:nasa:pds:mess_mascs:document:uvvs_cdr_ds.cat data_to_document data set catalog file urn:nasa:pds:mess_mascs:document:uvvsscic.fmt data_to_document format file containing column information umc_ob3_99_13223_090645_sci.dat umc_ob3_99_13223_090645_sci_file 691088 919 umc_ob3_99_13223_090645_sci_table_binary 0 919 This table contains MESSENGER UVVS spectra collected by the MUV detector and instrument engineering data. Detailed descriptions for the parameters defined below are contained in the CDR SIS document. The complete column definitions are contained in an external file found in the LABEL directory of the archive volume. 36 17 752 STEP_NUMBER 1 1 UnsignedMSB2 2 Step in the observation. PER STEP column. 3 1 0 3 24 PLANET_SUN_VECTOR_TG 1 3 IEEE754MSBDouble 8 Derived (x,y,z) vector giving center-to-center planet- sun position in target body-fixed coordinate system. Unit = kilometers. PER STEP column. 3 1 0 27 24 PLANET_SC_VECTOR_TG 1 27 IEEE754MSBDouble 8 Derived (x,y,z) vector giving center-to-center planet- spacecraft position in target body-fixed coordinate system. Unit = kilometers. PER STEP column. 3 1 0 51 24 BORESIGHT_UNIT_VECTOR_CENTER_TG 1 51 IEEE754MSBDouble 8 Derived (x,y,z) vector giving look direction of MASCS UVVS center in target body-fixed coordinate system. Unit = N/A. PER STEP column. 3 1 0 75 24 BORESIGHT_UNIT_VECTOR_C1_TG 1 75 IEEE754MSBDouble 8 Derived (x,y,z) vector giving look direction of MASCS UVVS corner 1 in target body-fixed coordinate system. Unit = N/A. PER STEP column. 3 1 0 99 24 BORESIGHT_UNIT_VECTOR_C2_TG 1 99 IEEE754MSBDouble 8 Derived (x,y,z) vector giving look direction of MASCS UVVS corner 2 in target body-fixed coordinate system. Unit = N/A. PER STEP column. 3 1 0 123 24 BORESIGHT_UNIT_VECTOR_C3_TG 1 123 IEEE754MSBDouble 8 Derived (x,y,z) vector giving look direction of MASCS UVVS corner 3 in target body-fixed coordinate system. Unit = N/A. PER STEP column. 3 1 0 147 24 BORESIGHT_UNIT_VECTOR_C4_TG 1 147 IEEE754MSBDouble 8 Derived (x,y,z) vector giving look direction of MASCS UVVS corner 4 in target body-fixed coordinate system. Unit = N/A. PER STEP column. 3 1 0 171 24 SURFACE_TANGENT_VECTOR_CENTER 1 171 IEEE754MSBDouble 8 Vector from center of target planet through tangent line (a radial line which intersects the boresight look direction at a 90 deg. angle) to the planet surface, with a magnitude equal to the planet radius, UVVS Center. In target body-fixed coordinate system. Unit = kilometers. PER STEP column. 3 1 0 195 24 SURFACE_TANGENT_VECTOR_C1 1 195 IEEE754MSBDouble 8 Vector from center of target planet through tangent line (a radial line which intersects the boresight look direction at a 90 deg. angle) to the planet surface, with a magnitude equal to the planet radius, UVVS Corner 1. In target body-fixed coordinate system. Unit = kilometers. PER STEP column. 3 1 0 219 24 SURFACE_TANGENT_VECTOR_C2 1 219 IEEE754MSBDouble 8 Vector from center of target planet through tangent line (a radial line which intersects the boresight look direction at a 90 deg. angle) to the planet surface, with a magnitude equal to the planet radius, UVVS Corner 2. In target body-fixed coordinate system. Unit = kilometers. PER STEP column. 3 1 0 243 24 SURFACE_TANGENT_VECTOR_C3 1 243 IEEE754MSBDouble 8 Vector from center of target planet through tangent line (a radial line which intersects the boresight look direction at a 90 deg. angle) to the planet surface, with a magnitude equal to the planet radius, UVVS Corner 3. In target body-fixed coordinate system. Unit = kilometers. PER STEP column. 3 1 0 267 24 SURFACE_TANGENT_VECTOR_C4 1 267 IEEE754MSBDouble 8 Vector from center of target planet through tangent line (a radial line which intersects the boresight look direction at a 90 deg. angle) to the planet surface, with a magnitude equal to the planet radius, UVVS Corner 4. In target body-fixed coordinate system. Unit = kilometers. PER STEP column. 5 1 0 291 40 RA_SET 1 291 IEEE754MSBDouble 8 Right ascension of UVVS footprint center, and 4 corners - 5 total values. Format: (center, corner 1, corner 2, corner 3, corner 4). Unit = degrees. PER STEP column. 5 1 0 331 40 DEC_SET 1 331 IEEE754MSBDouble 8 Declination of UVVS footprint center, and 4 corners - 5 total values. Format: (center, corner 1, corner 2, corner 3, corner 4). Unit = degrees. PER STEP column. 5 1 0 371 40 TARGET_LATITUDE_SET 1 371 IEEE754MSBDouble 8 For exosphere observations, this indicates the latitudes below the tangent points of the UVVS field-of-view center and corners. For surface observations, this indicates the latitudes at the locations where the field-of-view center and corners intersect the planet surface. Format: (center, corner 1, corner 2, corner 3, corner 4). Unit = degrees. PER STEP column. 5 1 0 411 40 TARGET_LONGITUDE_SET 1 411 IEEE754MSBDouble 8 For exosphere observations, this indicates the longitudes below the tangent points of the UVVS field-of-view center and corners. For surface observations, this indicates the longitudes at the locations where the field-of-view center and corners intersect the planet surface. Format: (center, corner 1, corner 2, corner 3, corner 4). Unit = degrees. PER STEP column. 5 1 0 451 40 TARGET_ALTITUDE_SET 1 451 IEEE754MSBDouble 8 For exosphere observations, this indicates the altitudes of the actual field-of-view center and corner tangent points above the surface along a radial line. For surface observations, these altitudes have a value of 0. Format: (center, corner 1, corner 2, corner 3, corner 4). Unit = kilometers. PER STEP column. SLIT_ROTATION_ANGLE 2 491 IEEE754MSBDouble 8 Angle of long dimension of the slit with the surface tangent line. Unit = degrees. PER STEP column. ALONG_TRACK_FOOTPRINT_SIZE 3 499 IEEE754MSBDouble 8 Derived length of UVVS footprint along track, accounting for smear across surface. Unit = meters. PER STEP column. ACROSS_TRACK_FOOTPRINT_SIZE 4 507 IEEE754MSBDouble 8 Derived width of UVVS footprint across track, accounting for jitter across surface. Unit = meters. PER STEP column. FOOTPRINT_AZIMUTH 5 515 IEEE754MSBDouble 8 Derived angle of footprint smear relative to a N-S line. 0 is North, plus/minus 180 is South, sign denotes east (clockwise) or west rotation of azimuth from North. Unit = degrees. PER STEP column. INCIDENCE_ANGLE 6 523 IEEE754MSBDouble 8 Derived solar incidence angle of footprint center. Unit = degrees. PER STEP column. EMISSION_ANGLE 7 531 IEEE754MSBDouble 8 Derived emission angle of footprint center. Unit = degrees. PER STEP column. PHASE_ANGLE 8 539 IEEE754MSBDouble 8 Derived phase angle of footprint center. Unit = degrees. PER STEP column. SLANT_RANGE_TO_CENTER 9 547 IEEE754MSBDouble 8 Derived slant range from s/c to footprint center (equal to s/c NADIR_ALTITUDE in nadir pointing case). Unit = kilometers. PER STEP column. SUBSPACECRAFT_LATITUDE 10 555 IEEE754MSBDouble 8 Derived subspacecraft latitude on planet surface. Unit = degrees. PER STEP column. SUBSPACECRAFT_LONGITUDE 11 563 IEEE754MSBDouble 8 Derived subspacecraft longitude on planet surface. Unit = degrees. PER STEP column. NADIR_ALTITUDE 12 571 IEEE754MSBDouble 8 Derived spacecraft altitude above nadir point. Unit = kilometers. PER STEP column. SUBSOLAR_LATITUDE 13 579 IEEE754MSBDouble 8 Derived subsolar latitude on planet surface. Unit = degrees. PER STEP column. SUBSOLAR_LONGITUDE 14 587 IEEE754MSBDouble 8 Derived subsolar longitude on planet surface. Unit = degrees. PER STEP column. SOLAR_DISTANCE 15 595 IEEE754MSBDouble 8 Derived subsolar distance to footprint center on planet surface. Unit = kilometers. PER STEP column. PLANET_TRUE_ANOMALY 16 603 IEEE754MSBDouble 8 MIDSTEP_TIME 17 611 IEEE754MSBDouble 8 A calculated value indicating the mission elapsed time since launch at the middle of an individual UVVS step. Unit = seconds. This is a double precision value. The formula used is: MIDSTEP_TIME = (N-1)*(INT_TIME+STEP_TIME)/3000 + SC_TIME + PACKET_SUBSECONDS*5/1000 + (INT_TIME/3000)/2 where N is the Nth step in an observation sequence, and the other values are contained in the UVVS Science Header CDR. PER STEP column. STEP_UTC_TIME 18 619 ASCII_String 17 UTC time in YYDOYTHH:MM:SS.00 format derived from the MIDSTEP_TIME using SPICE kernels. PER STEP column. GRATING_OFFSET 19 636 IEEE754MSBSingle 4 Number of grating steps offset from nominal as noted in GRATING_OFFSET.TAB, located in the CALIB directory. A correction for this was implemented in PDS delivery 16. PER STEP column. STEP_POSITION 20 640 SignedMSB4 4 Actual grating position calculated by start position + (step number * step size) + offset. PER STEP column. STEP_WAVELENGTH 21 644 IEEE754MSBSingle 4 RAW_STEP_DATA 22 648 UnsignedMSB2 2 COUNT_RATE 23 650 IEEE754MSBSingle 4 DEAD_CORRECTED_COUNT_RATE 24 654 IEEE754MSBSingle 4 Count rate corrected for nonlinearity due to dead-time. Unit = counts/second. PER STEP column. DARK_RATE 25 658 IEEE754MSBSingle 4 Dark count rate at step from model/module. Unit = counts/second. PER STEP column. SCATTERED_LIGHT_RATE 26 662 IEEE754MSBSingle 4 Scattered light at step from model/module. Unit = counts/second. PER STEP column. FULLY_CORRECTED_COUNT_RATE 27 666 IEEE754MSBSingle 4 Count rate corrected for dark, scattered light, dead time, etc. Unit = counts/second. PER STEP column. FULLY_CORRECTED_COUNT_RATE_UNCERTAINTY 28 670 IEEE754MSBSingle 4 Uncertainty for count rate, equivalent to instrument shot noise. Unit = counts/second. PER STEP column. STEP_RADIANCE_KR 29 674 IEEE754MSBSingle 4 Calibrated radiance value at step. Unit = kiloRayleighs/nanometer. PER STEP column. STEP_RADIANCE_W 30 678 IEEE754MSBSingle 4 Calibrated radiance value at step. Unit = W/(m^2 steradian micron). PER STEP column. STEP_RADIANCE_SIGNAL_TO_NOISE 31 682 IEEE754MSBSingle 4 Signal to noise ratio for the step radiance values. PMT_TEMPERATURE 32 686 IEEE754MSBSingle 4 PMT temperature in degrees C. DATA_QUALITY_INDEX 33 690 ASCII_String 21 21 character index of data quality. Each digit signifies quality factor of measurements. PER STEP column. Format: A-BCDEF-GHIJ-KLM-NOPQ A: SBOS trip 0 = no trip 1 = trip 9 = Unknown. No information found from MASCS HK EDR for the time period START_TIME to STOP TIME. B: Footprint center on planet 0 = not on planet 1 = on planet C: Footprint C1 on planet 0 = not on planet 1 = on planet D: Footprint C2 on planet 0 = not on planet 1 = on planet E: Footprint C3 on planet 0 = not on planet 1 = on planet F: Footprint C4 on planet 0 = not on planet 1 = on planet G: Partial scan (macro cutoff) 0 = No partial scan. 1 = Partial scan. H: Temperature 1 flag for this UVVS detector 0 = Temperature does not exceed 25 deg C threshold. 1 = Temperature exceeds 25 deg C threshold but less than 45 deg C threshold. 2 = Temperature exceeds 45 deg C threshold. 9 = Unknown. No information found from MASCS HK EDR for the time period START_TIME to STOP TIME. I: UVVS noise spike flag 0 = No noise spike detected. 1 = Noise spike detected. J: VIRS operating flag 0 = VIRS is not scanning during readout. 1 = VIRS is scanning during readout. 9 = Unknown. No information found from MASCS HK EDR for the time period START_TIME to STOP TIME. K: Buffer overflow flag 0 = No buffer overflow. 1 = Buffer overflow. L: Background subtraction method # = Method used M: Background quality flag (not yet implemented) 0 = Not yet implemented. 1 = Inside TBD threshold. N: SPICE Version Epoch. Indicates what SPICE is used to determine pointing fields in CDR. \\Predict\\ SPICE may change one or more times before settling on \\Final\\ pointing solutions about 2 weeks from data acquisition. 0 = No SPICE 1 = Predict 2 = Actual O: Bad data identifier for UVVS. Bad data encompass when a Solar Energetic Particle event interacts with the instrument causing noisy data that should not be used. There are also times when the instrument wavelength fiducial misregisters. The data is compromised when these events happen and should not be used. 0 = Good Data 1 = Bad Data P-Q: Spares SC_TIME 34 711 UnsignedMSB4 4 Spacecraft time in integer seconds that is transmitted to the MESSENGER subsystems by the Integrated Electronics Module. This is assigned as the start time of the UVVS observation. A UVVS observation is defined as all the scan data contained within one UVVS science packet. This is due to the highly configurable nature of the instrument, i.e. it can be commanded to take multiple scans over multiple wavelengths. Unit is in mission elapsed time which is the number of seconds since launch. PER OBSERVATION column. OBSERVATION_TYPE 35 715 ASCII_String 30 Describes the type of observation being executed at this MIDSTEP time. PER STEP column. ORBIT_NUMBER 36 745 IEEE754MSBDouble 8 Orbit number is a unique identifier for a given orbit of the MESSENGER spacecraft around Mercury. Orbit number is defined as starting at apoherm and is calculated using the MIDSTEP_TIME value and appropriate SPICE kernels. Orbit numbering does not start until MESSENGER performs the Mercury orbit insertion. Until that time the value for orbit number is 0. umc_ob3_99_13223_090645_sci.lbl umc_ob3_99_13223_090645_sci_pds3file 2336 umc_ob3_99_13223_090645_sci_pds3file_stream 0 2708 7-Bit ASCII Text Carriage-Return Line-Feed