urn:nasa:pds:lro_lola_rdr:data_calibrated:lolardr_253180750_dat 2.0 1.17.0.0 Product_Observational 2026-08-28 2.0 Improved geolocation with a clock correction and GRGM1200B orbits 2024-03-15 1.0 Initial version 2025-11-14T07:50:27.270Z 2025-11-14T09:47:17.271Z Lunar Reconnaissance Orbiter Mission urn:nasa:pds:context:investigation:mission.lunar_reconnaissance_orbiter data_to_investigation LOLA Lunar Reconnaissance Orbiter Host urn:nasa:pds:context:instrument_host:spacecraft.lro is_instrument_host Lunar Orbiter Laser Altimeter for LRO Instrument urn:nasa:pds:context:instrument:lro.lola is_instrument Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon data_to_target RDR V2.0 73754 SIXTH EXTENDED SCIENCE MISSION 497289112 497296122 GODDARD SPACE FLIGHT CENTER SC_B LASER_2 ENABLED NOFIRE GAINS_DIS THRESHOLDS_DIS RGATES_FSW SWINPUTS_FSW APID005_2025315_0071174 rdr_data processing_information_to_data_object LOLA_RDR 5.15 moon_pa_de421_1900-2050.bpc moon_080317.tf moon_assoc_me.tf naif0012.tls de421.bsp lro_frames_2014049_v01.tf lro_clkcor_2026238_v00.tsc LRO_ES_159_GRGM1200B_L600.bsp moc42_2025317_2025318_v01.bc moc42_2025318_2025319_v01.bc moc42_2025319_2025320_v01.bc 2025-11-14T07:50:27.270Z 2025-11-14T09:47:17.271Z Moon MEAN EARTH/POLAR AXIS OF DE421 urn:nasa:pds:lro_lola_edr:data_raw:lolaedr253180750_dat data_to_raw_product GRVFLD.LLGM-1 data_to_raw_source_product LOLA Science Team Team identifier for the gravity model source product lolardr_253180750.dat rdr_data 2026-08-27T20:20:44 0 196308 This product contains time-ordered, calibrated, geolocated data reduced by the LRO Lunar Orbiter Laser Altimeter (LOLA) Science Operations Center at NASA Goddard Space Flight Center. Orbit and geometry data describing the observations has been supplied by the LRO Flight Dynamics Facility and the LOLA Science Team. 67 0 256 MET_Seconds 1 1 SignedLSB4 4 LRO Data Unit (DU) mission elapsed time (MET) passed to LOLA at the LRO 1 PPS (one pulse per second) tick. The MET time is the uniform time scale on board LRO. In the event of a clock reset, an offset will be added to the DU time to maintain continuity. -1 Subseconds 2 5 UnsignedLSB4 4 Laser transmit time as fractional seconds of MET time, roughly 9.4872 ms after the shot reference time T0. If no fire is detected, set to T0, the 28-Hz minor frame start. Transmit_Time 3 9 UnsignedLSB4 4 Laser transmit time in Terrestrial Dynamical Time (TDT, aka TT) at the LRO spacecraft, in seconds from the J2000 epoch. The LRO Project counts time from 2001-01-01T00:00:00, thus a constant offset of 365*86400 + 43200 has been added to match J2000. TDT is the independent argument of apparent geocentric ephemerides. TDB, barycentric coordinate time, varies from TDT only by periodic variations. TDT is related to Coordinated Universal Time (UTC) through International Atomic Time (TAI) and leap seconds. TDT = TAI + 32.184 seconds. TAI = UTC + leap seconds (34 seconds in 2009) Time is stored as an integer number of seconds. Transmit_Time_Fractional_Seconds 4 13 UnsignedLSB4 4 A 32-bit fractional number of seconds. Laser_Energy 5 17 SignedLSB4 4 nanojoules Laser transmit energy. -1 Transmit_Width 6 21 SignedLSB4 4 picoseconds Laser transmit pulse width. -1 Scaled_Spacecraft_Longitude 7 25 SignedLSB4 4 Spacecraft Center-of-Mass position in Moon-fixed coordinates of longitude in the range -180 to 180 degrees. Stored as Degrees * (10**7). -2147483648 Scaled_Spacecraft_Latitude 8 29 SignedLSB4 4 Spacecraft Center-of-Mass position in Moon-fixed coordinates of latitude, in the range -90 to 90 degrees. Stored as Degrees * (10**7). -2147483648 Spacecraft_Radius 9 33 UnsignedLSB4 4 millimeters Spacecraft Center-of-Mass position in Moon-centered radial coordinates. 4294967295 Selenoid_Radius 10 37 UnsignedLSB4 4 millimeters Equipotential radius (geoid) at Spot 1, relative to an equipotential surface whose mean equatorial radius is 1737.4 kilometers. 4294967295 Longitude_1 11 41 SignedLSB4 4 The planetocentric longitude of the spot 1 centroid, in the range -180 to 180 degrees. Negative values should be adjusted by adding 360 degrees to conform with LRO conventions. Stored as Degrees * (10**7). -2147483648 Latitude_1 12 45 SignedLSB4 4 The planetocentric latitude of the spot 1 centroid, in the range -90 to 90 degrees. Stored as Degrees * (10**7). -2147483648 Radius_1 13 49 SignedLSB4 4 millimeters The distance from the Moon center to the Spot 1 centroid. -1 Range_1 14 53 UnsignedLSB4 4 millimeters LOLA half of 2-way range (c/2 times time-of-flight) to the spot 1 centroid. 4294967295 Pulse_1 15 57 SignedLSB4 4 picoseconds Pulse width of spot 1 return at THRESHOLD_1. -1 Energy_1 16 61 UnsignedLSB4 4 zeptojoules Received Energy of detected return. Background_1 17 65 UnsignedLSB4 4 counts Background noise counts at detector 1 using the noise counter interval. The Earth and lunar events, as well as glitches resulting from the energy measurement are included as counts. Threshold_1 18 69 UnsignedLSB4 4 nanovolts Threshold at detector 1. Gain_1 19 73 UnsignedLSB4 4 Gain at detector 1 scaled by 1.E6. Shot_Flag_1 20 77 UnsignedLSB4 4 Describes the probability that spot 1 is a lunar range and its associated quality using flags in the least significant byte. Any values other than 0 should be regarded as an invalid measurement. bit 0 = ground/not ground bit 1 = xmt LE bit 2 = xmt TE bit 3 = rcv LE bit 4 = rcv TE bit 5 = xmt energy invalid bit 6 = autoedit flag bit 7 = Pointing not found from spacecraft C-Kernel The next most significant byte gives the RMU phase status for TX and RX: bit 8 = RMU Phase of receive channel, A=0, B=1 (unflipped) bit 9 = RMU Phase of transmit pulse, A=0, B=1 (unflipped) bit 10= TDC status invalid, rare but serious bit 11= set to 1 if signal NOT acquired by FSW on last packet bits 12-15 are reserved for manual editing and give reasons bit 0 is set These are not always recorded by the manual editing software. bit 12= failed n-sigma edit criteria on altitude bit 13= failed slope edit criteria bit 14= just bad bit 15= weird The succeeding two bytes represent an unsigned 16-bit value. Bits 16-31 may be used as a relative indicator of range uncertainty. Longitude_2 21 81 SignedLSB4 4 The planetocentric longitude of the spot 2 centroid, in the range -180 to 180 degrees. Negative values should be adjusted by adding 360 degrees to conform with LRO conventions. Stored as Degrees * (10**7). -2147483648 Latitude_2 22 85 SignedLSB4 4 The planetocentric latitude of the spot 2 centroid, in the range -90 to 90 degrees. Stored as Degrees * (10**7). -2147483648 Radius_2 23 89 SignedLSB4 4 millimeters The distance from the Moon center to the Spot 2 centroid. -1 Range_2 24 93 UnsignedLSB4 4 millimeters LOLA half of 2-way range (c/2 times time-of-flight) to the spot 2 centroid. 4294967295 Pulse_2 25 97 SignedLSB4 4 picoseconds Pulse width of spot 2 return at THRESHOLD_2. -1 Energy_2 26 101 UnsignedLSB4 4 zeptojoules Received Energy of detected return. Background_2 27 105 UnsignedLSB4 4 counts Background noise counts at detector 2 using the noise counter interval. Threshold_2 28 109 UnsignedLSB4 4 nanovolts Threshold at detector 2. Gain_2 29 113 UnsignedLSB4 4 Gain at detector 2 scaled by 1.E6. Shot_Flag_2 30 117 UnsignedLSB4 4 Describes the probability that spot 2 is a lunar range and its associated quality as described for SHOT_FLAG_1. Longitude_3 31 121 SignedLSB4 4 The planetocentric longitude of the spot 3 centroid, in the range -180 to 180 degrees. Negative values should be adjusted by adding 360 degrees to conform with LRO conventions. Stored as Degrees * (10**7). -2147483648 Latitude_3 32 125 SignedLSB4 4 The planetocentric latitude of the spot 3 centroid, in the range -90 to 90 degrees. Stored as Degrees * (10**7). -2147483648 Radius_3 33 129 SignedLSB4 4 millimeters The distance from the Moon center to the Spot 3 centroid. -1 Range_3 34 133 UnsignedLSB4 4 millimeters LOLA half of 2-way range (c/2 times time-of-flight) to the spot 3 centroid. 4294967295 Pulse_3 35 137 SignedLSB4 4 picoseconds Pulse width of spot 3 return at THRESHOLD_3. -1 Energy_3 36 141 UnsignedLSB4 4 zeptojoules Received Energy of detected return 3. Background_3 37 145 UnsignedLSB4 4 counts Background noise counts at detector 3. Threshold_3 38 149 UnsignedLSB4 4 nanovolts Threshold at detector 3. Gain_3 39 153 UnsignedLSB4 4 Gain at detector 3 scaled by 1.E6. Shot_Flag_3 40 157 UnsignedLSB4 4 Describes the probability that spot 3 is a lunar range and its associated quality as described for SHOT_FLAG_1. Longitude_4 41 161 SignedLSB4 4 The planetocentric longitude of the spot 4 centroid, in the range -180 to 180 degrees. Negative values should be adjusted by adding 360 degrees to conform with LRO conventions. Stored as Degrees * (10**7). -2147483648 Latitude_4 42 165 SignedLSB4 4 The planetocentric latitude of the spot 4 centroid, in the range -90 to 90 degrees. Stored as Degrees * (10**7). -2147483648 Radius_4 43 169 SignedLSB4 4 millimeters The distance from the Moon center to the Spot 4 centroid. -1 Range_4 44 173 UnsignedLSB4 4 millimeters LOLA half of 2-way range (c/2 times time-of-flight) to the spot 4 centroid. 4294967295 Pulse_4 45 177 SignedLSB4 4 picoseconds Pulse width of spot 4 return at THRESHOLD_4. -1 Energy_4 46 181 UnsignedLSB4 4 zeptojoules Received Energy of detected return 4. Background_4 47 185 UnsignedLSB4 4 counts Background noise counts at detector 4. Threshold_4 48 189 UnsignedLSB4 4 nanovolts Threshold at detector 4. Gain_4 49 193 UnsignedLSB4 4 Gain at detector 4 scaled by 1.E6. Shot_Flag_4 50 197 UnsignedLSB4 4 Describes the probability that spot 4 is a lunar range and its associated quality as described for SHOT_FLAG_1. Longitude_5 51 201 SignedLSB4 4 The planetocentric longitude of the spot 5 centroid, in the range -180 to 180 degrees. Negative values should be adjusted by adding 360 degrees to conform with LRO conventions. Stored as Degrees * (10**7). -2147483648 Latitude_5 52 205 SignedLSB4 4 The planetocentric latitude of the spot 5 centroid, in the range -90 to 90 degrees. Stored as Degrees * (10**7). -2147483648 Radius_5 53 209 SignedLSB4 4 millimeters The distance from the Moon center to the Spot 5 centroid. -1 Range_5 54 213 UnsignedLSB4 4 millimeters LOLA half of 2-way range (c/2 times time-of-flight) to the spot 5 centroid. 4294967295 Pulse_5 55 217 SignedLSB4 4 picoseconds Pulse width of spot 5 return at THRESHOLD_5. -1 Energy_5 56 221 UnsignedLSB4 4 zeptojoules Received Energy of detected return 5. Background_5 57 225 UnsignedLSB4 4 counts Background noise counts at detector 5. Threshold_5 58 229 UnsignedLSB4 4 nanovolts Threshold at detector 5. Gain_5 59 233 UnsignedLSB4 4 Gain at detector 5 scaled by 1.E6. Shot_Flag_5 60 237 UnsignedLSB4 4 Describes the probability that spot 5 is a lunar range and its associated quality as described for SHOT_FLAG_1. Off_Nadir_Angle 61 241 UnsignedLSB2 2 Angle from nadir to detector 1 boresight. Scaled value: Radians * 20000. 65535 Emission_Angle 62 243 UnsignedLSB2 2 Angle from vertical to detector 1. Scaled value: Radians * 20000. 65535 Solar_Incidence 63 245 UnsignedLSB2 2 Angle from vertical to Sun. Scaled value: Radians * 20000. 65535 Solar_Phase 64 247 UnsignedLSB2 2 Angle from detector 1 boresight to Sun. Scaled value: Radians * 20000. 65535 Earth_Range 65 249 UnsignedLSB4 4 Time from T0 to Earth return as a 32-bit fractional number of seconds. Earth_Pulse 66 253 UnsignedLSB2 2 picoseconds Pulse width of Earth return. Short ground pulses typically do not exceed 32 ns, but values should be read as unsigned. 65535 Earth_Energy 67 255 UnsignedLSB2 2 attojoule Energy of Earth return. Energy saturates at ~3 fJ. 65535 lolardr_253180750.lbl 0 PDS3 PDS3 label Carriage-Return Line-Feed