KPL/SCLK MRO SCLK File =========================================================================== This file is a SPICE spacecraft clock (SCLK) kernel containing information required for MRO spacecraft on-board clock to UTC conversion. Production/History of this SCLK file -------------------------------------------------------- This file was generated by the NAIF utility program MAKCLK, version 3.5.2, from the most recent MRO spacecraft SCLKvSCET file (see corresponding section of the description for the SCLKvSCET SFDU header and MAKCLK setup file). Usage -------------------------------------------------------- This file must be loaded into the user's program by a call to the FURNSH subroutine CALL FURNSH( 'this_file_name' ) in order to use the SPICELIB SCLK family of subroutines to convert MRO spacecraft on-board clock to ET and vice versa. SCLK Format -------------------------------------------------------- The on-board clock, the conversion for which is provided by this SCLK file, consists of two fields: SSSSSSSSSS:FFF where: SSSSSSSSSS -- count of on-board seconds FFF -- count of fractions of a second with one fraction being 1/256 of a second; normally this field value is within 0..255 range. References -------------------------------------------------------- 1. SCLK Required Reading Document 2. MAKCLK User's Guide Document 3. SFOC SCLKvSCET SIS Document Inquiries -------------------------------------------------------- If you have any questions regarding this file contact NAIF at JPL Charles H. Acton, Jr (818) 354-3869 Chuck.Acton@jpl.nasa.gov Boris V. Semenov (818) 354-8136 Boris.Semenov@jpl.nasa.gov SCLKvSCET File SFDU Header -------------------------------------------------------- MISSION-NAME=MARS-RECONNAISSANCE-ORBITER; SPACECRAFT-NAME=MARS-RECONNAISSANCE-ORBITER; DATA-SET-ID=SCLK-SCET; FILE-NAME=MRO-SCLKSCET.00117; PRODUCT-CREATION-TIME=2026-02-20T00:00:00; PRODUCT-VERSION-ID=117; PRODUCER-ID=SCT; APPLICABLE-START-TIME=1980-001T00:00:00; APPLICABLE-STOP-TIME=2038-001T00:00:00; MISSION-ID=28; SPACECRAFT-ID=74; MAKCLK Setup File -------------------------------------------------------- SCLKSCET_FILE = MRO_SCLKSCET.00117 OLD_SCLK_KERNEL = /sdma/naif/ops/projects/MRO/scet/bin/mro_template.tsc FILE_NAME = MRO_SCLKSCET.00117.tsc NAIF_SPACECRAFT_ID = -74 LEAPSECONDS_FILE = /sdma/naif/ops/projects/MRO/lsk/mro.tls PARTITION_TOLERANCE = 10 LOG_FILE = MRO_SCLKSCET.00117.log Kernel Data -------------------------------------------------------- \begindata SCLK_KERNEL_ID = ( @2026-02-23/23:42:03.84 ) SCLK_DATA_TYPE_74 = ( 1 ) SCLK01_TIME_SYSTEM_74 = ( 2 ) SCLK01_N_FIELDS_74 = ( 2 ) SCLK01_MODULI_74 = ( 4294967296 256 ) SCLK01_OFFSETS_74 = ( 0 0 ) SCLK01_OUTPUT_DELIM_74 = ( 1 ) SCLK_PARTITION_START_74 = ( 0.0000000000000E+00 2.0692823040000E+11 2.2260603392000E+11 2.2729527552000E+11 2.3561205939200E+11 2.3780137548800E+11 2.3917296793600E+11 2.3960615987200E+11 2.4179319500800E+11 2.4813067136000E+11 2.5633706112000E+11 2.5737636633600E+11 2.6501157401600E+11 2.7159871590400E+11 2.7626595737600E+11 2.8004752460800E+11 2.9335648051200E+11 3.1175723596800E+11 3.2440413849600E+11 3.2554585753600E+11 3.2683671756800E+11 3.2693853619200E+11 3.2957112524800E+11 3.3290006118400E+11 3.3297686067200E+11 3.3313229184000E+11 3.3638496512000E+11 3.4404585907200E+11 3.4572777420800E+11 3.4610202009600E+11 3.7274017792000E+11 ) SCLK_PARTITION_END_74 = ( 2.0692822929300E+11 2.2260603390000E+11 2.2729527549700E+11 2.3561205930600E+11 2.3780137544900E+11 2.3917296792500E+11 2.3960615982500E+11 2.4179319498300E+11 2.4813067132700E+11 2.5633706110600E+11 2.5737636629200E+11 2.6501157399500E+11 2.7159871588000E+11 2.7626595732800E+11 2.8004752462700E+11 2.9335648049900E+11 3.1175723590000E+11 3.2440413829600E+11 3.2554585747400E+11 3.2683671745900E+11 3.2693853624700E+11 3.2957112519000E+11 3.3290006112500E+11 3.3297686071700E+11 3.3313229176900E+11 3.3638496487900E+11 3.4404585898400E+11 3.4572777415200E+11 3.4610202006300E+11 3.7274017793200E+11 1.0995116277750E+12 ) SCLK01_COEFFICIENTS_74 = ( 0.0000000000000E+00 -6.3119514881600E+08 1.0000000000000E+00 1.2098765056000E+10 -5.8393434781600E+08 1.0000000000000E+00 2.0171981312000E+10 -5.5239834681600E+08 1.0000000000000E+00 2.8245197568000E+10 -5.2086234581600E+08 1.0000000000000E+00 4.4413748224000E+10 -4.5770394481600E+08 1.0000000000000E+00 6.4629966080000E+10 -3.7873434381600E+08 1.0000000000000E+00 8.0798516736000E+10 -3.1557594281600E+08 1.0000000000000E+00 8.8871732992000E+10 -2.8403994181600E+08 1.0000000000000E+00 1.0097049804800E+11 -2.3677914081600E+08 1.0000000000000E+00 1.0904371430400E+11 -2.0524313981600E+08 1.0000000000000E+00 1.1711693056000E+11 -1.7370713881600E+08 1.0000000000000E+00 1.2925993241600E+11 -1.2627353781600E+08 1.0000000000000E+00 1.4135869747200E+11 -7.9012736816000E+07 1.0000000000000E+00 1.5350169932800E+11 -3.1579135816000E+07 9.9999999999626E-01 2.0692822929300E+11 1.7711824685900E+08 9.9999852023164E-01 2.0700659831700E+11 1.7742437540600E+08 1.0000000000000E+00 2.0701189034900E+11 1.7744504740600E+08 1.0000000226389E+00 2.0740766916500E+11 1.7899105844100E+08 1.0000000201904E+00 2.0814306986900E+11 1.8186371749900E+08 1.0000000150408E+00 2.0844943607700E+11 1.8306046051700E+08 1.0000000132783E+00 2.0937485457300E+11 1.8667537656500E+08 1.0000000070773E+00 2.0948336990100E+11 1.8709926456800E+08 1.0000000106838E+00 2.1005844855700E+11 1.8934566559200E+08 9.9999997549027E-01 2.1012111735700E+11 1.8959046558600E+08 1.0000000000000E+00 2.1012650871700E+11 1.8961152558600E+08 9.9999872490489E-01 2.1014538103700E+11 1.8968524549200E+08 1.0000000061688E+00 2.1051887198100E+11 1.9114419450100E+08 1.0000000031304E+00 2.1100953975700E+11 1.9306086550700E+08 1.0000000020774E+00 2.1187215735700E+11 1.9643046551400E+08 1.0000000000000E+00 2.1338249156500E+11 2.0233020851400E+08 9.9999903576062E-01 2.1340081066900E+11 2.0240176744500E+08 9.9999999979331E-01 2.1463939959700E+11 2.0724000544400E+08 9.9999949258425E-01 2.1465907575700E+11 2.0731686540500E+08 9.9999999523305E-01 2.1524981086100E+11 2.0962442439400E+08 9.9999999390912E-01 2.1672086289300E+11 2.1537072135900E+08 9.9999999172986E-01 2.1771141495700E+11 2.1924006532700E+08 9.9999999091646E-01 2.1974058001300E+11 2.2716649125500E+08 9.9999904776985E-01 2.1985214967700E+11 2.2760230984000E+08 9.9999999090157E-01 2.2260603279300E+11 2.3835966566400E+08 9.9999998312114E-01 2.2526024079300E+11 2.4872766548900E+08 9.9999998135288E-01 2.2645463439300E+11 2.5339326540200E+08 9.9999998168063E-01 2.2729527437000E+11 2.5667701525200E+08 9.9999998094590E-01 2.2873286566600E+11 2.6229260614500E+08 9.9999997705480E-01 2.3430021568200E+11 2.8404006664600E+08 9.9999997696065E-01 2.3561205815600E+11 2.8916445119200E+08 9.9999997716838E-01 2.3643057233200E+11 2.9236177211900E+08 9.9999997615993E-01 2.3780137421300E+11 2.9771646683900E+08 9.9999997596158E-01 2.3808891341300E+11 2.9883966681200E+08 9.9999997661369E-01 2.3917296665000E+11 3.0307424967000E+08 9.9999996666604E-01 2.3960615853900E+11 3.0476640543000E+08 9.9999900775628E-01 2.4039383597900E+11 3.0784326737700E+08 9.9999906859216E-01 2.4081408583500E+11 3.0948486684800E+08 9.9999916040942E-01 2.4120132218700E+11 3.1099750757800E+08 9.9999917286095E-01 2.4179319365000E+11 3.1330950356800E+08 9.9999997132958E-01 2.4257895134600E+11 3.1637886948000E+08 9.9999996979812E-01 2.4773253803400E+11 3.3651006687200E+08 9.9999996778956E-01 2.4813066996900E+11 3.3806526969300E+08 9.9999996913538E-01 2.4819702440100E+11 3.3832446668500E+08 9.9999996880886E-01 2.5080699662500E+11 3.4851967036700E+08 9.9999996809006E-01 2.5633705971500E+11 3.7012147862300E+08 9.9999996574055E-01 2.5653881433900E+11 3.7090958259600E+08 9.9999996297776E-01 2.5737636488700E+11 3.7418126430300E+08 9.9999996157694E-01 2.5742300373500E+11 3.7436344729600E+08 9.9999996310760E-01 2.5994189602300E+11 3.8420286993300E+08 9.9999996214355E-01 2.6254541551100E+11 3.9437286754800E+08 9.9999994833919E-01 2.6306077730300E+11 3.9638599944400E+08 9.9999995814220E-01 2.6501157254600E+11 4.0400629304300E+08 9.9999995647018E-01 2.6556438918600E+11 4.0616573294900E+08 9.9999995525593E-01 2.6823629651400E+11 4.1660287048200E+08 9.9999995498477E-01 2.7159871441000E+11 4.2973731479700E+08 9.9999995058672E-01 2.7283692394600E+11 4.3457407055800E+08 9.9999995009204E-01 2.7626595583400E+11 4.4796872570200E+08 9.9999995056608E-01 2.7993760460200E+11 4.6231110299300E+08 9.9999906323305E-01 2.8004752308500E+11 4.6274047166500E+08 9.9999995127939E-01 2.8088823527700E+11 4.6602450350500E+08 9.9999995067969E-01 2.8476558311700E+11 4.8117039275800E+08 9.9999936539106E-01 2.8482609281300E+11 4.8140675860800E+08 9.9999994916894E-01 2.8676506497300E+11 4.8898086822300E+08 9.9999994803892E-01 2.8951419930900E+11 4.9971967366500E+08 9.9999936715673E-01 2.8960683521300E+11 5.0008153243600E+08 9.9999994520999E-01 2.9137299636500E+11 5.0698059905800E+08 9.9999861190744E-01 2.9148328295700E+11 5.0741140546000E+08 9.9999993983758E-01 2.9335647897600E+11 5.1472857696900E+08 9.9999993443361E-01 2.9347361228800E+11 5.1518612893900E+08 9.9999994402935E-01 2.9893018624000E+11 5.3650086974600E+08 9.9999994336138E-01 3.0006467712000E+11 5.4093247449500E+08 9.9999994197216E-01 3.0331608217600E+11 5.5363327475800E+08 9.9999994020072E-01 3.0395823027200E+11 5.5614166560800E+08 9.9999993934296E-01 3.0672684544000E+11 5.6695656795200E+08 9.9999987843425E-01 3.0773976243200E+11 5.7091327447100E+08 9.9999987927052E-01 3.0800693811200E+11 5.7195692934500E+08 9.9999913018966E-01 3.0810229683200E+11 5.7232942402100E+08 9.9999929846274E-01 3.0822636723200E+11 5.7281407368100E+08 9.9999987843555E-01 3.0828322585600E+11 5.7303617765400E+08 9.9999990549992E-01 3.0835907763200E+11 5.7333247362600E+08 9.9999994480704E-01 3.0884609638400E+11 5.7523489052100E+08 9.9999994591542E-01 3.1015249484800E+11 5.8033800924500E+08 9.9999991404611E-01 3.1019716992000E+11 5.8051252123000E+08 9.9999988113311E-01 3.1175723436400E+11 5.8660652224000E+08 9.9999988279539E-01 3.1249549868400E+11 5.8949036690200E+08 9.9999988514458E-01 3.1318645446000E+11 5.9218941259200E+08 9.9999988948542E-01 3.1392076486000E+11 5.9505781227500E+08 9.9999999323101E-01 3.1410986233200E+11 5.9579647427000E+08 9.9999999396431E-01 3.1508539231600E+11 5.9960713824700E+08 9.9999999028872E-01 3.1756333382000E+11 6.0928659715300E+08 9.9999998590660E-01 3.2001554578800E+11 6.1886555001800E+08 9.9999998385306E-01 3.2129975161200E+11 6.2388197893700E+08 9.9999998187853E-01 3.2440413669200E+11 6.3600848293600E+08 9.9999997516538E-01 3.2468245733200E+11 6.3709567290900E+08 9.9999997959691E-01 3.2554585567000E+11 6.4046832259800E+08 9.9999998171141E-01 3.2683671559300E+11 6.4551074408000E+08 9.9999839628646E-01 3.2693853427200E+11 6.4590847265700E+08 9.9999997022075E-01 3.2700730713600E+11 6.4617711664900E+08 9.9999998163187E-01 3.2780172736000E+11 6.4928032059200E+08 9.9999998083866E-01 3.2957112327000E+11 6.5619202323300E+08 9.9999959613693E-01 3.2961486087000E+11 6.5636287316400E+08 9.9999988811799E-01 3.2974757203800E+11 6.5688127610600E+08 9.9999998028120E-01 3.3034476858200E+11 6.5921407506000E+08 9.9999997700457E-01 3.3290005914700E+11 6.6919567860000E+08 9.9999888405558E-01 3.3297685868000E+11 6.6949567644100E+08 9.9999998080173E-01 3.3313228977700E+11 6.7010282915200E+08 9.9999997492524E-01 3.3638496281600E+11 6.8280858289200E+08 9.9999997344391E-01 3.3729112012800E+11 6.8634825979800E+08 9.9999997274982E-01 3.3985580006400E+11 6.9636654052500E+08 9.9999997319537E-01 3.4195692876800E+11 7.0457407430500E+08 9.9999997423367E-01 3.4404585668000E+11 7.1273394875100E+08 9.9999939044774E-01 3.4408029508000E+11 7.1286847366900E+08 9.9999996527773E-01 3.4423512388000E+11 7.1347327364800E+08 9.9999997454873E-01 3.4478833732000E+11 7.1563426359300E+08 9.9999997050139E-01 3.4572777176000E+11 7.1930392926600E+08 9.9999918681528E-01 3.4580553022400E+11 7.1960767301900E+08 9.9999997056189E-01 3.4610201761500E+11 7.2076582685600E+08 9.9999861104074E-01 3.4618256135900E+11 7.2108045041900E+08 9.9999997136965E-01 3.4651339963100E+11 7.2237278738200E+08 9.9999996921556E-01 3.4937406523100E+11 7.3354726203800E+08 9.9999996678183E-01 3.6248303444700E+11 7.8475417133700E+08 9.9999996342804E-01 3.6688597127900E+11 8.0195314270800E+08 9.9999996038866E-01 3.7252799137500E+11 8.2399228283500E+08 9.9999839270883E-01 3.7260428372700E+11 8.2429029935600E+08 9.9999827085877E-01 3.7274017545100E+11 8.2482112548500E+08 9.9999995400000E-01 ) \begintext