Source Code

These source-code files are part of a reconstructed copy of Luminary 97, the original release of the Apollo 11 Lunar Module (LM) Apollo Guidance Computer (AGC) software.

The reconstruction began with source code of Luminary 99 revision 1 previously transcribed from a digitized copy of that program. The code was then updated by undoing changes described in original Luminary memos 83 and 85, using asterisks indicating changed lines in the listing as a guide. The reconstruction was verified by matching memory-bank checksums to those listed in drawing 2021152D. Note that page numbers in the reconstructed code match those on the Luminary 099 revision 001 printout, although the added code would likely have changed page numbers for a real Luminary 97 listing.

Comments from the original source code are prefixed with a single '#' symbol, whereas comments added later are prefixed by "##" or "###". Report any errors noted by creating an issue report at the Virtual AGC project's GitHub repository.

047696,000002:                                                                                                  ## Copyright:   Public domain.
047697,000003:                                                                                                  ## Filename:    PLANETARY_INERTIAL_ORIENTATION.agc
047698,000004:                                                                                                  ## Purpose:     A section of Luminary revision 97.
047699,000005:                                                                                                  ##              It is part of the reconstructed source code for the
047700,000006:                                                                                                  ##              original release of the flight software for the Lunar 
047701,000007:                                                                                                  ##              Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
047702,000008:                                                                                                  ##              The code has been recreated from a copy of Luminary 99
047703,000009:                                                                                                  ##              revision 001, using asterisks indicating changed lines in
047704,000010:                                                                                                  ##              the listing and Luminary Memos #83 and #85, which list 
047705,000011:                                                                                                  ##              changes between Luminary 97 and 98, and 98 and 99. The
047706,000012:                                                                                                  ##              code has been adapted such that the resulting bugger words
047707,000013:                                                                                                  ##              exactly match those specified for Luminary 97 in NASA drawing
047708,000014:                                                                                                  ##              2021152D, which gives relatively high confidence that the
047709,000015:                                                                                                  ##              reconstruction is correct.
047710,000016:                                                                                                  ## Reference:   pp. 1140-1148
047711,000017:                                                                                                  ## Assembler:   yaYUL
047712,000018:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
047713,000019:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
047714,000020:                                                                                                  ## Mod history: 2019-07-28 MAS  Created from Luminary 99.
047715,000021: 

Page 1140

047717,000023:                                                                                                  #  ..... RP-TO-R SUBROUTINE .....
047718,000024:                                                                                                  #  SUBROUTINE TO CONVERT RP (VECTOR IN PLANETARY COORDINATE SYSTEM, EITHER
047719,000025:                                                                                                  #  EARTH-FIXED OR MOON-FIXED) TO R (SAME VECTOR IN THE BASIC REF. SYSTEM)
047720,000026: 
047721,000027:                                                                                                  #        R = MT(T) * (RP + LP X RP)      MT = M MATRIX TRANSPOSE
047722,000028: 
047723,000029:                                                                                                  #  CALLING SEQUENCE
047724,000030:                                                                                                  #        L       CALL
047725,000031:                                                                                                  #        L+1             RP-TO-R
047726,000032: 
047727,000033:                                                                                                  #  SUBROUTINES USED
047728,000034:                                                                                                  #        EARTHMX, MOONMX, EARTHL
047729,000035: 
047730,000036:                                                                                                  #        ITEMS AVAILABLE FROM LAUNCH DATA
047731,000037:                                                                                                  #                504LM = THE LIBRATION VECTOR L OF THE MOON AT TIME TIMSUBL, EXPRESSED
047732,000038:                                                                                                  #                        IN THE MOON-FIXED COORD. SYSTEM         RADIANS B0
047733,000039: 
047734,000040:                                                                                                  #        ITEMS NECESSARY FOR SUBR. USED (SEE DESCRIPTION OF SUBR.)
047735,000041: 
047736,000042:                                                                                                  #  INPUT
047737,000043:                                                                                                  #        MPAC = 0 FOR EARTH, NON-ZERO FOR MOON
047738,000044:                                                                                                  #        0-5D = RP VECTOR
047739,000045:                                                                                                  #        6-7D = TIME
047740,000046: 
047741,000047:                                                                                                  #  OUTPUT
047742,000048:                                                                                                  #        MPAC = R VECTOR METERS B-29 FOR EARTH, B-27 FOR MOON
047743,000049: 
047744,000050: 26,2000                                           SETLOC   PLANTIN1                              
047745,000051: 26,2000                                           BANK                                           
047746,000052: 
047747,000053: 26,3716                                           COUNT*   $$/LUROT                              
047748,000054: 
047749,000055: 26,3716           46020        RP-TO-R            STQ      BHIZ                                  
047750,000056: 26,3717           00050                                    RPREXIT                               
047751,000057: 26,3720           55733                                    RPTORA                                
047752,000058: 26,3721           77624                           CALL                                           #  COMPUTE M MATRIX FOR MOON
047753,000059: 26,3722           51720                                    MOONMX                                #  LP=LM FOR MOON  RADIANS B0
047754,000060: 26,3723           77775                           VLOAD                                          
047755,000061: 26,3724           02013                                    504LM                                 
047756,000062: 26,3725           53235        RPTORB             VXV      VAD                                   
047757,000063: 26,3726           00001                                    504RPR                                
047758,000064: 26,3727           00001                                    504RPR                                
047759,000065: 26,3730           52105                           VXM      GOTO                                  
047760,000066: 26,3731           00025                                    MMATRIX                               #  MPAC=R=MT(T)*(RP+LPXRP)
047761,000067: 26,3732           51706                                    RPRPXXXX                              #  RESET PUSHLOC TO 0 BEFORE EXITING
047762,000068: 26,3733           77624        RPTORA             CALL                                           #  EARTH COMPUTATIONS
047763,000069: 26,3734           55743                                    EARTHMX                               #  M MATRIX B-1
047764,000070: 26,3735           77624                           CALL                                           
047765,000071: 26,3736           15753                                    EARTHL                                #  L VECTOR RADIANS B0
047766,000072: 26,3737           76521                           MXV      VSL1                                  #  LP=M(T)*L  RAD B-0
047767,000073: 26,3740           00025                                    MMATRIX                               

Page 1141

047769,000075: 26,3741           77650                           GOTO                                           
047770,000076: 26,3742           55725                                    RPTORB                                
047771,000077: 24,2000                                           SETLOC   PLANTIN                               
047772,000078: 24,2000                                           BANK                                           
047773,000079: 24,3670                                           COUNT*   $$/LUROT                              
047774,000080: 

Page 1142

047776,000082:                                                                                                  #  ..... R-TO-RP SUBROUTINE .....
047777,000083:                                                                                                  #  SUBROUTINE TO CONVERT R (VECTOR IN REFERENCE COORD. SYSTEM) TO RP
047778,000084:                                                                                                  #  (VECTOR IN PLANETARY COORD SYSTEM) EITHER EARTH-FIXED OR MOON-FIXED
047779,000085: 
047780,000086:                                                                                                  #        RP = M(T) * (R - L X R)
047781,000087: 
047782,000088:                                                                                                  #  CALLING SEQUENCE
047783,000089:                                                                                                  #        L       CALL
047784,000090:                                                                                                  #        L+1             R-TO-RP
047785,000091: 
047786,000092:                                                                                                  #  SUBROUTINES USED
047787,000093:                                                                                                  #        EARTHMX, MOONMX, EARTHL
047788,000094: 
047789,000095:                                                                                                  #  INPUT
047790,000096:                                                                                                  #        MPAC = 0 FOR EARTH, NON-ZERO FOR MOON
047791,000097:                                                                                                  #        0-5D = R VECTOR
047792,000098:                                                                                                  #        6-7D = TIME
047793,000099: 
047794,000100:                                                                                                  #        ITEMS AVAILABLE FROM LAUNCH DATA
047795,000101:                                                                                                  #                504LM = THE LIBRATION VECTOR L OF THE MOON AT TIME TIMSUBL, EXPRESSED
047796,000102:                                                                                                  #                        IN THE MOON-FIXED COORD. SYSTEM   RADIANS B0
047797,000103: 
047798,000104:                                                                                                  #        ITEMS NECESSARY FOR SUBROUTINES USED (SEE DESCRIPTION OF SUBR.)
047799,000105: 
047800,000106:                                                                                                  #  OUTPUT
047801,000107:                                                                                                  #        MPAC = RP VECTOR METERS B-29 FOR EARTH, B-27 FOR MOON
047802,000108: 
047803,000109: 24,3670           46020        R-TO-RP            STQ      BHIZ                                  
047804,000110: 24,3671           00050                                    RPREXIT                               
047805,000111: 24,3672           51712                                    RTORPA                                
047806,000112: 24,3673           77624                           CALL                                           
047807,000113: 24,3674           51720                                    MOONMX                                
047808,000114: 24,3675           61375                           VLOAD    VXM                                   
047809,000115: 24,3676           02013                                    504LM                                 #  LP=LM
047810,000116: 24,3677           00025                                    MMATRIX                               
047811,000117: 24,3700           77772                           VSL1                                           #  L = MT(T)*LP          RADIANS B0
047812,000118: 24,3701           51235        RTORPB             VXV      BVSU                                  
047813,000119: 24,3702           00001                                    504RPR                                
047814,000120: 24,3703           00001                                    504RPR                                
047815,000121: 24,3704           77721                           MXV                                            #  M(T)*(R-LXR)          B-2
047816,000122: 24,3705           00025                                    MMATRIX                               
047817,000123: 24,3706           40372        RPRPXXXX           VSL1     SETPD                                 
047818,000124: 24,3707           00001                                    0D                                    
047819,000125: 24,3710           77650                           GOTO                                           
047820,000126: 24,3711           00050                                    RPREXIT                               
047821,000127: 24,3712           77624        RTORPA             CALL                                           #  EARTH COMPUTATIONS
047822,000128: 24,3713           55743                                    EARTHMX                               
047823,000129: 24,3714           77624                           CALL                                           
047824,000130: 24,3715           15753                                    EARTHL                                
047825,000131: 24,3716           77650                           GOTO                                           #  MPAC=L=(-AX,-AY,0)    RAD B-0
047826,000132: 24,3717           51701                                    RTORPB                                
047827,000133: 

Page 1143

047829,000135:                                                                                                  #  ..... MOONMX SUBROUTINE .....
047830,000136:                                                                                                  #  SUBROUTINE TO COMPUTE THE TRANSFORMATION MATRIX M FOR THE MOON
047831,000137: 
047832,000138:                                                                                                  #  CALLING SEQUENCE
047833,000139:                                                                                                  #        L       CALL
047834,000140:                                                                                                  #        L+1             MOONMX
047835,000141: 
047836,000142:                                                                                                  #  SUBROUTINES USED
047837,000143:                                                                                                  #        NEWANGLE
047838,000144: 
047839,000145:                                                                                                  #  INPUT
047840,000146:                                                                                                  #        6-7D = TIME
047841,000147: 
047842,000148:                                                                                                  #        ITEMS AVAILABLE FROM LAUNCH DATA
047843,000149:                                                                                                  #                BSUBO, BDOT
047844,000150:                                                                                                  #                TIMSUBO, NODIO, NODDOT, FSUBO, FDOT
047845,000151:                                                                                                  #                COSI = COS(I)   B-1
047846,000152:                                                                                                  #                SINI = SIN(I)   B-1
047847,000153:                                                                                                  #                  I IS THE ANGLE BETWEEN THE MEAN LUNAR EQUATORIAL PLANE AND THE
047848,000154:                                                                                                  #                  PLANE OF THE ECLIPTIC (1 DEGREE 32.1 MINUTES)
047849,000155: 
047850,000156:                                                                                                  #  OUTPUT
047851,000157:                                                                                                  #        MMATRIX = 3X3 M MATRIX B-1      (STORED IN VAC AREA)
047852,000158: 
047853,000159: 24,3720           40220        MOONMX             STQ      SETPD                                 
047854,000160: 24,3721           00051                                    EARTHMXX                              
047855,000161: 24,3722           00011                                    8D                                    
047856,000162: 24,3723           77770                           AXT,1                                          #  B REQUIRES SL 0, SL 5 IN NEWANGLE
047857,000163: 24,3724           00005                                    5                                     
047858,000164: 24,3725           65345                           DLOAD    PDDL                                  #  PD 10D        8-9D=BSUBO
047859,000165: 24,3726           14017                                    BSUBO                                 #                10-11D=BDOT
047860,000166: 24,3727           14011                                    BDOT                                  
047861,000167: 24,3730           45006                           PUSH     CALL                                  #  PD 12D
047862,000168: 24,3731           53743                                    NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= B   REVS B0
047863,000169: 24,3732           71406                           PUSH     COS                                   #  PD 10D
047864,000170: 24,3733           14041                           STODL    COB                                   #  PD 8D         COS(B) B-1
047865,000171: 24,3734           77756                           SIN                                            #                SIN(B) B-1
047866,000172: 24,3735           14043                           STODL    SOB                                   #  SETUP INPUT FOR NEWANGLE
047867,000173: 24,3736           14015                                    FSUBO                                 #                        8-9D=FSUBO
047868,000174: 24,3737           41525                           PDDL     PUSH                                  #  PD 10D THEN 12D       10-11D=FDOT
047869,000175: 24,3740           14007                                    FDOT                                  
047870,000176: 24,3741           45170                           AXT,1    CALL                                  #  F REQUIRES SL 1, SL 6 IN NEWANGLE
047871,000177: 24,3742           00004                                    4                                     
047872,000178: 24,3743           53743                                    NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= F REVS B0
047873,000179: 24,3744           14027                           STODL    AVECTR     +2                         #  SAVE F TEMP
047874,000180: 24,3745           14013                                    NODIO                                 #                        8-9D=NODIO
047875,000181: 24,3746           41525                           PDDL     PUSH                                  #  PD 10D THEN 12D       10-11D=NODDOT
047876,000182: 24,3747           14005                                    NODDOT                                #                        MPAC=T
047877,000183: 24,3750           45170                           AXT,1    CALL                                  #  NODE REQUIRES SL 0, SL 5 IN NEWANGLE
047878,000184: 24,3751           00005                                    5                                     
047879,000185: 24,3752           53743                                    NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= NODI REVS B0

Page 1144

047881,000187: 24,3753           71406                           PUSH     COS                                   #  PD 10D        8-9D= NODI REVS B0
047882,000188: 24,3754           77606                           PUSH                                           #  PD 12D        10-11D= COS(NODI) B-1
047883,000189: 24,3755           00025                           STORE    AVECTR                                
047884,000190: 24,3756           76405                           DMP      SL1R                                  
047885,000191: 24,3757           00041                                    COB                                   #                         COS(NODI) B-1
047886,000192: 24,3760           14035                           STODL    BVECTR     +2                         #  PD 10D  20-25D=AVECTR= COB*SIN(NODI)
047887,000193: 24,3761           76405                           DMP      SL1R                                  #                         SOB*SIN(NODI)
047888,000194: 24,3762           00043                                    SOB                                   
047889,000195: 24,3763           14037                           STODL    BVECTR     +4                         #  PD 8D
047890,000196: 24,3764           41556                           SIN      PUSH                                  #  PD 10D                -SIN(NODI) B-1
047891,000197: 24,3765           77676                           DCOMP                                          #          26-31D=BVECTR= COB*COS(NODI)
047892,000198: 24,3766           14033                           STODL    BVECTR                                #  PD 8D                  SOB*COS(NODI)
047893,000199: 24,3767           00027                                    AVECTR     +2                         #  MOVE F FROM TEMP LOC. TO 504F
047894,000200: 24,3770           14007                           STODL    504F                                  
047895,000201: 24,3771           76405                           DMP      SL1R                                  
047896,000202: 24,3772           00041                                    COB                                   
047897,000203: 24,3773           77650                           GOTO                                           
047898,000204: 24,3774           53671                                    MOONMXA                               
047899,000205: 
047900,000206: 25,3671                                           BANK     25                                    
047901,000207: 25,2000                                           SETLOC   PLANTIN3                              
047902,000208: 25,2000                                           BANK                                           
047903,000209: 25,3671                                           COUNT*   $$/LUROT                              
047904,000210: 
047905,000211: 25,3671           14027        MOONMXA            STODL    AVECTR     +2                         
047906,000212: 25,3672           00011                                    SINNODI                               #  8-9D=SIN(NODI) B-1
047907,000213: 25,3673           76405                           DMP      SL1R                                  
047908,000214: 25,3674           00043                                    SOB                                   
047909,000215: 25,3675           14031                           STODL    AVECTR     +4                         #                         0
047910,000216: 25,3676           06522                                    HI6ZEROS                              #        8-13D= CVECTR= -SOB  B-1
047911,000217: 25,3677           57525                           PDDL     DCOMP                                 #  PD 10D                COB
047912,000218: 25,3700           00043                                    SOB                                   
047913,000219: 25,3701           63325                           PDDL     PDVL                                  #  PD 12D THEN PD 14D
047914,000220: 25,3702           00041                                    COB                                   
047915,000221: 25,3703           00033                                    BVECTR                                
047916,000222: 25,3704           63361                           VXSC     PDVL                                  #  PD 20D        BVECTR*SINI  B-2
047917,000223: 25,3705           14003                                    SINI                                  
047918,000224: 25,3706           00011                                    CVECTR                                
047919,000225: 25,3707           53361                           VXSC     VAD                                   #  PD 14D        CVECTR*COSI  B-2
047920,000226: 25,3710           14001                                    COSI                                  
047921,000227: 25,3711           77772                           VSL1                                           
047922,000228: 25,3712           24041                           STOVL    MMATRIX    +12D                       #  PD 8D  M2=BVECTR*SINI+CVECTR*COSI  B-1
047923,000229: 25,3713           63361                           VXSC     PDVL                                  #  PD 14D
047924,000230: 25,3714           14003                                    SINI                                  #                CVECTR*SINI  B-2
047925,000231: 25,3715           00033                                    BVECTR                                
047926,000232: 25,3716           52361                           VXSC     VSU                                   #  PD 8D         BVECTR*COSI  B-2
047927,000233: 25,3717           14001                                    COSI                                  
047928,000234: 25,3720           65372                           VSL1     PDDL                                  #  PD 14D
047929,000235: 25,3721           00007                                    504F                                  #  8-13D=DVECTR=BVECTR*COSI-CVECTR*SINI  B-1
047930,000236: 25,3722           74346                           COS      VXSC                                  

Page 1145

047932,000238: 25,3723           00011                                    DVECTR                                
047933,000239: 25,3724           73525                           PDDL     SIN                                   #  PD 20D  14-19D= DVECTR*COSF  B-2
047934,000240: 25,3725           00007                                    504F                                  
047935,000241: 25,3726           52361                           VXSC     VSU                                   #  PD 14D          AVECTR*SINF  B-2
047936,000242: 25,3727           00025                                    AVECTR                                
047937,000243: 25,3730           77772                           VSL1                                           
047938,000244: 25,3731           14033                           STODL    MMATRIX    +6                         #  M1= AVECTR*SINF-DVECTR*COSF  B-1
047939,000245: 25,3732           00007                                    504F                                  
047940,000246: 25,3733           74356                           SIN      VXSC                                  #  PD 8D
047941,000247: 25,3734           71525                           PDDL     COS                                   #  PD 14D  8-13D=DVECTR*SINF B-2
047942,000248: 25,3735           00007                                    504F                                  
047943,000249: 25,3736           53361                           VXSC     VAD                                   #  PD 8D         AVECTR*COSF B-2
047944,000250: 25,3737           00025                                    AVECTR                                
047945,000251: 25,3740           57572                           VSL1     VCOMP                                 
047946,000252: 25,3741           34025                           STCALL   MMATRIX                               #  M0= -(AVECTR*COSF+DVECTR*SINF)  B-1
047947,000253: 25,3742           00051                                    EARTHMXX                              
047948,000254: 
047949,000255:                                                                                                  #  COMPUTE X=X0+(XDOT)(T+T0)
047950,000256:                                                                                                  #  8-9D= XO (REVS B-0), PUSHLOC SET AT 12D
047951,000257:                                                                                                  #  10-11D=XDOT (REVS/CSEC) SCALED B+23 FOR WEARTH,B+28 FOR NODDOT AND BDOT
047952,000258:                                                                                                  #                        AND B+27 FOR FDOT
047953,000259:                                                                                                  #   X1=DIFFERENCE IN 23 AND SCALING OF XDOT, =0 FOR WEARTH, 5 FOR NODDOT AND
047954,000260:                                                                                                  #                                        BDOT AND 4 FOR FDOT
047955,000261:                                                                                                  #  6-7D=T (CSEC B-28), TIMSUBO= (CSEC B-42 TRIPLE PREC.)
047956,000262: 
047957,000263: 25,3743           54345        NEWANGLE           DLOAD    SR                                    #  ENTER PD 12D
047958,000264: 25,3744           00007                                    6D                                    
047959,000265: 25,3745           20617                                    14D                                   
047960,000266: 25,3746           72371                           TAD      TLOAD                                 #  CHANGE MODE TO TP
047961,000267: 25,3747           01707                                    TIMSUBO                               
047962,000268: 25,3750           00155                                    MPAC                                  
047963,000269: 25,3751           14017                           STODL    TIMSUBM                               #  T+T0 CSEC B-42
047964,000270: 25,3752           00020                                    TIMSUBM    +1                         
047965,000271: 25,3753           77605                           DMP                                            #  PD 10D        MULT BY XDOT IN 10-11D
047966,000272: 25,3754           43257                           SL*      DAD                                   #  PD 8D         ADD XO IN 8-9D AFTER SHIFTING
047967,000273: 25,3755           20206                                    5,1                                   #                SUCH THAT SCALING IS B-0
047968,000274: 25,3756           67206                           PUSH     SLOAD                                 #  PD 10D  SAVE PARTIAL (X0+XDOT*T) IN 8-9D
047969,000275: 25,3757           00017                                    TIMSUBM                               
047970,000276: 25,3760           41261                           SL       DMP                                   
047971,000277: 25,3761           20212                                    9D                                    
047972,000278: 25,3762           00013                                    10D                                   #  XDOT
047973,000279: 25,3763           43257                           SL*      DAD                                   #  PD 8D         SHIFT SUCH THAT THIS PART OF X
047974,000280: 25,3764           20213                                    10D,1                                 #                IS SCALED REVS/CSEC B-0
047975,000281: 25,3765           77600                           BOV                                            #  TURN OFF OVERFLOW IF SET BY SHIFT
047976,000282: 25,3766           53767                                    +1                                    #  INSTRUCTION BEFORE EXITING
047977,000283: 25,3767           77616                           RVQ                                            #  MPAC=X= X0+(XDOT)(T+T0)  REVS B0
047978,000284: 

Page 1146

047980,000286:                                                                                                  #  ..... EARTHMX SUBROUTINE .....
047981,000287:                                                                                                  #  SUBROUTINE TO COMPUTE THE TRANSFORMATION MATRIX M FOR THE EARTH
047982,000288: 
047983,000289:                                                                                                  #  CALLING SEQUENCE
047984,000290:                                                                                                  #        L       CALL
047985,000291:                                                                                                  #        L+1             EARTHMX
047986,000292: 
047987,000293:                                                                                                  #  SUBROUTINES USED
047988,000294:                                                                                                  #        NEWANGLE
047989,000295: 
047990,000296:                                                                                                  #  INPUT
047991,000297:                                                                                                  #        INPUT AVAILABLE FROM LAUNCH DATA        AZO  REVS B-0
047992,000298:                                                                                                  #                                                TEPHEM  CSEC B-42
047993,000299:                                                                                                  #        6-7D= TIME CSEC B-28
047994,000300: 
047995,000301:                                                                                                  #  OUTPUT
047996,000302:                                                                                                  #        MMATRIX= 3X3 M MATRIX B-1       (STORED IN VAC AREA)
047997,000303: 
047998,000304: 26,3743                                           BANK     26                                    
047999,000305: 26,2000                                           SETLOC   PLANTIN1                              
048000,000306: 26,2000                                           BANK                                           
048001,000307: 26,3743                                           COUNT*   $$/LUROT                              
048002,000308: 
048003,000309: 26,3743           40220        EARTHMX            STQ      SETPD                                 #  SET 8-9D=AZO
048004,000310: 26,3744           00051                                    EARTHMXX                              
048005,000311: 26,3745           00011                                    8D                                    #  10-11D=WEARTH
048006,000312: 26,3746           77770                           AXT,1                                          #  FOR SL 5, AND SL 10 IN NEWANGLE
048007,000313: 26,3747           00000                                    0                                     
048008,000314: 26,3750           65345                           DLOAD    PDDL                                  #  LEAVING PD SET AT 12D FOR NEWANGLE
048009,000315: 26,3751           01712                                    AZO                                   
048010,000316: 26,3752           14021                                    WEARTH                                
048011,000317: 26,3753           45006                           PUSH     CALL                                  
048012,000318: 26,3754           53743                                    NEWANGLE                              
048013,000319: 26,3755           41401                           SETPD    PUSH                                  #  18-19D=504AZ
048014,000320: 26,3756           00023                                    18D                                   #                         COS(AZ)   SIN(AZ)     0
048015,000321: 26,3757           65346                           COS      PDDL                                  #  20-37D=  MMATRIX=     -SIN(AZ)   COS(AZ)     0    B-1
048016,000322: 26,3760           00023                                    504AZ                                 #                            0         0        1
048017,000323: 26,3761           65356                           SIN      PDDL                                  
048018,000324: 26,3762           06522                                    HI6ZEROS                              
048019,000325: 26,3763           73525                           PDDL     SIN                                   
048020,000326: 26,3764           00023                                    504AZ                                 
048021,000327: 26,3765           65276                           DCOMP    PDDL                                  
048022,000328: 26,3766           00023                                    504AZ                                 
048023,000329: 26,3767           63346                           COS      PDVL                                  
048024,000330: 26,3770           06522                                    HI6ZEROS                              
048025,000331: 26,3771           41525                           PDDL     PUSH                                  
048026,000332: 26,3772           06520                                    HIDPHALF                              
048027,000333: 26,3773           77650                           GOTO                                           
048028,000334: 26,3774           00051                                    EARTHMXX                              
048029,000335: 

Page 1147

048031,000337:                                                                                                  #  ..... EARTHL SUBROUTINE .....
048032,000338:                                                                                                  #  SUBROUTINE TO COMPUTE L VECTOR FOR EARTH
048033,000339: 
048034,000340:                                                                                                  #  CALLING SEQUENCE
048035,000341:                                                                                                  #        L       CALL
048036,000342:                                                                                                  #        L+1             EARTHL
048037,000343: 
048038,000344:                                                                                                  #  INPUT
048039,000345:                                                                                                  #        AXO,AYO SET AT LAUNCH TIME WITH AYO IMMEDIATELY FOLLOWING AXO IN CORE
048040,000346: 
048041,000347:                                                                                                  #  OUTPUT
048042,000348:                                                                                                  #                -AX
048043,000349:                                                                                                  #        MPAC=   -AY     RADIANS B-0
048044,000350:                                                                                                  #                  0
048045,000351: 
048046,000352: 06,3753                                           BANK     06                                    
048047,000353: 06,2000                                           SETLOC   EARTHLOC                              
048048,000354: 06,2000                                           BANK                                           
048049,000355: 06,3753                                           COUNT*   $$/LUROT                              
048050,000356: 
048051,000357: 06,3753           57545        EARTHL             DLOAD    DCOMP                                 
048052,000358: 06,3754           01716                                    AXO                                   
048053,000359: 06,3755           14017                           STODL    504LPL                                
048054,000360: 06,3756           01714                                    -AYO                                  
048055,000361: 06,3757           14021                           STODL    504LPL     +2                         
048056,000362: 06,3760           24007                                    LO6ZEROS                              
048057,000363: 06,3761           24023                           STOVL    504LPL     +4                         
048058,000364: 06,3762           00017                                    504LPL                                
048059,000365: 06,3763           77616                           RVQ                                            
048060,000366: 

Page 1148

048062,000368:                                                                                                  #  CONSTANTS AND ERASABLE ASSIGNMENTS
048063,000369: 
048064,000370: 06,3764  12,2004               1B1                =        DP1/2                                 #  1  SCALED B-1
048065,000371: 06,3764  0000050               RPREXIT            =        S1                                    #  R-TO-RP AND RP-TO-R SUBR EXIT
048066,000372: 06,3764  0000051               EARTHMXX           =        S2                                    #  EARTHMX, MOONMX SUBR. EXITS
048067,000373: 06,3764                        504RPR             =        0D                                    #  6 REGS        R OR RP VECTOR
048068,000374: 06,3764                        SINNODI            =        8D                                    #  2             SIN(NODI)
048069,000375: 06,3764                        DVECTR             =        8D                                    #  6             D VECTOR MOON
048070,000376: 06,3764                        CVECTR             =        8D                                    #  6             C VECTR MOON
048071,000377: 06,3764                        504AZ              =        18D                                   #  2             AZ
048072,000378: 06,3764                        TIMSUBM            =        14D                                   #  3             TIME SUB M (MOON) T+T0 IN GETAZ
048073,000379: 06,3764                        504LPL             =        14D                                   #  6             L OR LP VECTOR
048074,000380: 06,3764                        AVECTR             =        20D                                   #  6             A VECTOR (MOON)
048075,000381: 06,3764                        BVECTR             =        26D                                   #  6             B VECTOR (MOON)
048076,000382: 06,3764                        MMATRIX            =        20D                                   #  18            M MATRIX
048077,000383: 06,3764                        COB                =        32D                                   #  2             COS(B) B-1
048078,000384: 06,3764                        SOB                =        34D                                   #  2             SIN(B) B-1
048079,000385: 06,3764                        504F               =        6D                                    #  2             F(MOON)
048080,000386: 

End of include-file PLANETARY_INERTIAL_ORIENTATION.agc.  Parent file is MAIN.agc