Source Code

These source-code files are part of a reconstructed copy of Luminary 178, the final release of the Apollo 14 Lunar Module (LM) Apollo Guidance Computer (AGC) software.

The reconstruction began with source code of Zerlina 56, Luminary 210, and Luminary 131, previously transcribed from digitized copies of those programs. The code was created by combining the three, using Zerlina 56 as a base, since it was based off of Luminary 183. The differences between the three were carefully merged using the Luminary memos as a guide, with all changes made after Luminary 178 being backed out. The reconstruction was verified by matching memory-bank checksums to those listed in drawing 2021152N. Note that page numbers in the reconstructed code match those for the baseline log section mentioned in each file's changelog; the page numbers for a real Luminary 178 listing would be different.

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.

048029,000002:                                                                                                  ## Copyright:   Public domain.
048030,000003:                                                                                                  ## Filename:    PLANETARY_INERTIAL_ORIENTATION.agc
048031,000004:                                                                                                  ## Purpose:     A section of Luminary revision 178.
048032,000005:                                                                                                  ##              It is part of the reconstructed source code for the final
048033,000006:                                                                                                  ##              release of the flight software for the Lunar Module's
048034,000007:                                                                                                  ##              (LM) Apollo Guidance Computer (AGC) for Apollo 14. The
048035,000008:                                                                                                  ##              code has been recreated from copies of Zerlina 56, Luminary
048036,000009:                                                                                                  ##              210, and Luminary 131, as well as many Luminary memos.
048037,000010:                                                                                                  ##              It has been adapted such that the resulting bugger words
048038,000011:                                                                                                  ##              exactly match those specified for Luminary 178 in NASA
048039,000012:                                                                                                  ##              drawing 2021152N, which gives relatively high confidence
048040,000013:                                                                                                  ##              that the reconstruction is correct.
048041,000014:                                                                                                  ## Reference:   pp. 1131-1139
048042,000015:                                                                                                  ## Assembler:   yaYUL
048043,000016:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
048044,000017:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
048045,000018:                                                                                                  ## Mod history: 2019-08-14 MAS  Created from Zerlina 56.
048046,000019: 

Page 1131

048048,000021:                                                                                                  #  ..... RP-TO-R SUBROUTINE .....
048049,000022:                                                                                                  #  SUBROUTINE TO CONVERT RP (VECTOR IN PLANETARY COORDINATE SYSTEM,EITHER
048050,000023:                                                                                                  #   EARTH-FIXED OR MOON-FIXED) TO R (SAME VECTOR IN THE BASIC REF. SYSTEM)
048051,000024: 
048052,000025:                                                                                                  #   R=MT(T)*(RP+LPXRP)    MT = M MATRIX TRANSPOSE
048053,000026: 
048054,000027:                                                                                                  #  CALLING SEQUENCE
048055,000028:                                                                                                  #   L       CALL
048056,000029:                                                                                                  #   L+1            RP-TO-R
048057,000030: 
048058,000031:                                                                                                  #  SUBROUTINES USED
048059,000032:                                                                                                  #   EARTHMX,MOONMX,EARTHL
048060,000033: 
048061,000034:                                                                                                  #     ITEMS AVAILABLE FROM LAUNCH DATA
048062,000035:                                                                                                  #      504LM= THE LIBRATION VECTOR L OF THE MOON AT TIME TIMSUBL,EXPRESSED
048063,000036:                                                                                                  #      IN THE MOON-FIXED COORD. SYSTEM   RADIANS  B0
048064,000037:                                                                                                  #        ITEMS NECESSARY FOR SUBR. USED (SEE DESCRIPTION OF SUBR.)
048065,000038: 
048066,000039:                                                                                                  #  INPUT
048067,000040:                                                                                                  #   MPAC= 0 FOR EARTH,NON-ZERO FOR MOON
048068,000041:                                                                                                  #   0-5D= RP VECTOR
048069,000042:                                                                                                  #   6-7D= TIME
048070,000043: 
048071,000044:                                                                                                  #  OUTPUT
048072,000045:                                                                                                  #   MPAC= R VECTOR METERS B-29 FOR EARTH, B-27 FOR MOON
048073,000046: 
048074,000047: 26,2000                                           SETLOC   PLANTIN1                              
048075,000048: 26,2000                                           BANK                                           
048076,000049: 
048077,000050: 26,3720                                           COUNT*   $$/LUROT                              
048078,000051: 
048079,000052: 26,3720           46020        RP-TO-R            STQ      BHIZ                                  
048080,000053: 26,3721           00050                                    RPREXIT                               
048081,000054: 26,3722           55735                                    RPTORA                                
048082,000055: 26,3723           77624                           CALL                                           #  COMPUTE M MATRIX FOR MOON
048083,000056: 26,3724           51672                                    MOONMX                                #  LP=LM FOR MOON  RADIANS B0
048084,000057: 26,3725           77775                           VLOAD                                          
048085,000058: 26,3726           02013                                    504LM                                 
048086,000059: 26,3727           53235        RPTORB             VXV      VAD                                   
048087,000060: 26,3730           00001                                    504RPR                                
048088,000061: 26,3731           00001                                    504RPR                                
048089,000062: 26,3732           52105                           VXM      GOTO                                  
048090,000063: 26,3733           00025                                    MMATRIX                               #  MPAC=R=MT(T)*(RP+LPXRP)
048091,000064: 26,3734           51660                                    RPRPXXXX                              #  RESET PUSHLOC TO 0 BEFORE EXITING
048092,000065: 26,3735           77624        RPTORA             CALL                                           #  EARTH COMPUTATIONS
048093,000066: 26,3736           55745                                    EARTHMX                               #  M MATRIX B-1
048094,000067: 26,3737           77624                           CALL                                           
048095,000068: 26,3740           15761                                    EARTHL                                #  L VECTOR RADIANS B0
048096,000069: 26,3741           76521                           MXV      VSL1                                  #  LP=M(T)*L  RAD B-0
048097,000070: 26,3742           00025                                    MMATRIX                               

Page 1132

048099,000072: 26,3743           77650                           GOTO                                           
048100,000073: 26,3744           55727                                    RPTORB                                
048101,000074: 24,2000                                           SETLOC   PLANTIN                               
048102,000075: 24,2000                                           BANK                                           
048103,000076: 24,3642                                           COUNT*   $$/LUROT                              
048104,000077: 

Page 1133

048106,000079:                                                                                                  #  ..... R-TO-RP SUBROUTINE .....
048107,000080:                                                                                                  #  SUBROUTINE TO CONVERT R (VECTOR IN REFERENCE COORD. SYSTEM) TO RP
048108,000081:                                                                                                  #   (VECTOR IN PLANETARY COORD SYSTEM) EITHER EARTH-FIXED OR MOON-FIXED
048109,000082: 
048110,000083:                                                                                                  #   RP=M(T)*(R-LXR)
048111,000084: 
048112,000085:                                                                                                  #  CALLING SEQUENCE
048113,000086:                                                                                                  #   L       CALL
048114,000087:                                                                                                  #   L+1            R-TO-RP
048115,000088: 
048116,000089:                                                                                                  #  SUBROUTINES USED
048117,000090:                                                                                                  #   EARTHMX,MOONMX,EARTHL
048118,000091: 
048119,000092:                                                                                                  #  INPUT
048120,000093:                                                                                                  #   MPAC= 0 FOR EARTH,NON-ZERO FOR MOON
048121,000094:                                                                                                  #   0-5D= R VECTOR
048122,000095:                                                                                                  #   6-7D= TIME
048123,000096: 
048124,000097:                                                                                                  #     ITEMS AVAILABLE FROM LAUNCH DATA
048125,000098:                                                                                                  #      504LM= THE LIBRATION VECTOR L OF THE MOON AT TIME TIMSUBL,EXPRESSED
048126,000099:                                                                                                  #      IN THE MOON-FIXED COORD. SYSTEM   RADIANS B0
048127,000100:                                                                                                  #        ITEMS NECESSARY FOR SUBROUTINES USED (SEE DESCRIPTION OF SUBR.)
048128,000101: 
048129,000102:                                                                                                  #  OUTPUT
048130,000103:                                                                                                  #   MPAC=RP VECTOR METERS B-29 FOR EARTH, B-27 FOR MOON
048131,000104: 
048132,000105: 24,3642           46020        R-TO-RP            STQ      BHIZ                                  
048133,000106: 24,3643           00050                                    RPREXIT                               
048134,000107: 24,3644           51664                                    RTORPA                                
048135,000108: 24,3645           77624                           CALL                                           
048136,000109: 24,3646           51672                                    MOONMX                                
048137,000110: 24,3647           61375                           VLOAD    VXM                                   
048138,000111: 24,3650           02013                                    504LM                                 #  LP=LM
048139,000112: 24,3651           00025                                    MMATRIX                               
048140,000113: 24,3652           77772                           VSL1                                           #   L=MT(T)*LP  RADIANS B0
048141,000114: 24,3653           51235        RTORPB             VXV      BVSU                                  
048142,000115: 24,3654           00001                                    504RPR                                
048143,000116: 24,3655           00001                                    504RPR                                
048144,000117: 24,3656           77721                           MXV                                            #  M(T)*(R-LXR) B-2
048145,000118: 24,3657           00025                                    MMATRIX                               
048146,000119: 24,3660           40372        RPRPXXXX           VSL1     SETPD                                 
048147,000120: 24,3661           00001                                    0D                                    
048148,000121: 24,3662           77650                           GOTO                                           
048149,000122: 24,3663           00050                                    RPREXIT                               
048150,000123: 24,3664           77624        RTORPA             CALL                                           #  EARTH COMPUTATIONS
048151,000124: 24,3665           55745                                    EARTHMX                               
048152,000125: 24,3666           77624                           CALL                                           
048153,000126: 24,3667           15761                                    EARTHL                                
048154,000127: 24,3670           77650                           GOTO                                           #  MPAC=L=(-AX,-AY,0) RAD B-0
048155,000128: 24,3671           51653                                    RTORPB                                
048156,000129: 

Page 1134

048158,000131:                                                                                                  #  ..... MOONMX SUBROUTINE .....
048159,000132:                                                                                                  #  SUBROUTINE TO COMPUTE THE TRANSFORMATION MATRIX M FOR THE MOON
048160,000133: 
048161,000134:                                                                                                  #  CALLING SEQUENCE
048162,000135:                                                                                                  #   L       CALL
048163,000136:                                                                                                  #   L+1            MOONMX
048164,000137: 
048165,000138:                                                                                                  #  SUBROUTINES USED
048166,000139:                                                                                                  #   NEWANGLE
048167,000140: 
048168,000141:                                                                                                  #  INPUT
048169,000142:                                                                                                  #   6-7D= TIME
048170,000143:                                                                                                  #     ITEMS AVAILABLE FROM LAUNCH DATA
048171,000144:                                                                                                  #      BSUBO,BDOT
048172,000145:                                                                                                  #      TIMSUBO,NODIO,NODDOT,FSUBO,FDOT
048173,000146:                                                                                                  #      COSI= COS(I) B-1
048174,000147:                                                                                                  #      SINI= SIN(I) B-1
048175,000148:                                                                                                  #        I  IS THE ANGLE BETWEEN THE MEAN LUNAR EQUATORIAL PLANE AND THE
048176,000149:                                                                                                  #        PLANE OF THE ECLIPTIC  (1 DEGREE  32.1 MINUTES)
048177,000150: 
048178,000151:                                                                                                  #  OUTPUT
048179,000152:                                                                                                  #   MMATRIX= 3X3 M MATRIX B-1   (STORED IN VAC AREA)
048180,000153: 
048181,000154: 24,3672           40220        MOONMX             STQ      SETPD                                 
048182,000155: 24,3673           00051                                    EARTHMXX                              
048183,000156: 24,3674           00011                                    8D                                    
048184,000157: 24,3675           77770                           AXT,1                                          #  B REQUIRES SL 0, SL 5 IN NEWANGLE
048185,000158: 24,3676           00005                                    5                                     
048186,000159: 24,3677           65345                           DLOAD    PDDL                                  #  PD 10D            8-9D=BSUBO
048187,000160: 24,3700           14017                                    BSUBO                                 #                    10-11D= BDOT
048188,000161: 24,3701           14011                                    BDOT                                  
048189,000162: 24,3702           45006                           PUSH     CALL                                  #  PD 12D
048190,000163: 24,3703           51741                                    NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= B  REVS B0
048191,000164: 24,3704           71406                           PUSH     COS                                   #  PD 10D
048192,000165: 24,3705           14041                           STODL    COB                                   #  PD 8D    COS(B) B-1
048193,000166: 24,3706           77756                           SIN                                            #           SIN(B) B-1
048194,000167: 24,3707           14043                           STODL    SOB                                   #            SETUP INPUT FOR NEWANGLE
048195,000168: 24,3710           14015                                    FSUBO                                 #                      8-9D=FSUBO
048196,000169: 24,3711           41525                           PDDL     PUSH                                  #  PD 10D THEN 12D   10-11D=FDOT
048197,000170: 24,3712           14007                                    FDOT                                  
048198,000171: 24,3713           45170                           AXT,1    CALL                                  #  F REQUIRES SL 1, SL 6 IN NEWANGLE
048199,000172: 24,3714           00004                                    4                                     
048200,000173: 24,3715           51741                                    NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= F REVS B0
048201,000174: 24,3716           14027                           STODL    AVECTR     +2                         #  SAVE F TEMP
048202,000175: 24,3717           14013                                    NODIO                                 #                      8-9D=NODIO
048203,000176: 24,3720           41525                           PDDL     PUSH                                  #  PD 10D THEN 12D   10-11D=NODDOT
048204,000177: 24,3721           14005                                    NODDOT                                #                      MPAC=T
048205,000178: 24,3722           45170                           AXT,1    CALL                                  #  NODE REQUIRES SL 0, SL 5 IN NEWANGLE
048206,000179: 24,3723           00005                                    5                                     
048207,000180: 24,3724           51741                                    NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= NODI REVS B0

Page 1135

048209,000182: 24,3725           71406                           PUSH     COS                                   #  PD 10D   8-9D= NODI  REVS  B0
048210,000183: 24,3726           77606                           PUSH                                           #  PD 12D 10-11D= COS(NODI)  B-1
048211,000184: 24,3727           00025                           STORE    AVECTR                                
048212,000185: 24,3730           76405                           DMP      SL1R                                  
048213,000186: 24,3731           00041                                    COB                                   #                          COS(NODI)    B-1
048214,000187: 24,3732           14035                           STODL    BVECTR     +2                         #  PD 10D   20-25D=AVECTR= COB*SIN(NODI)
048215,000188: 24,3733           76405                           DMP      SL1R                                  #                          SOB*SIN(NODI)
048216,000189: 24,3734           00043                                    SOB                                   
048217,000190: 24,3735           14037                           STODL    BVECTR     +4                         #  PD 8D
048218,000191: 24,3736           41556                           SIN      PUSH                                  #  PD 10D                 -SIN(NODI)   B-1
048219,000192: 24,3737           52076                           DCOMP    GOTO                                  #           26-31D=BVECTR= COV*COS(NODI)
048220,000193: 24,3740           53703                                    MOONMXA                               
048221,000194: 25,3703                                           BANK     25                                    
048222,000195: 25,2000                                           SETLOC   PLANTIN3                              
048223,000196: 25,2000                                           BANK                                           
048224,000197: 25,3703                                           COUNT*   $$/LUROT                              
048225,000198: 
048226,000199: 25,3703           14033        MOONMXA            STODL    BVECTR                                #  PD 8D                    SOB*COS(NODI)
048227,000200: 25,3704           00027                                    AVECTR     +2                         #  MOVE F FROM TEMP LOC. TO 504F
048228,000201: 25,3705           14007                           STODL    504F                                  
048229,000202: 25,3706           76405                           DMP      SL1R                                  
048230,000203: 25,3707           00041                                    COB                                   
048231,000204: 25,3710           14027                           STODL    AVECTR     +2                         
048232,000205: 25,3711           00011                                    SINNODI                               #  8-9D=SIN(NODI)  B-1
048233,000206: 25,3712           76405                           DMP      SL1R                                  
048234,000207: 25,3713           00043                                    SOB                                   
048235,000208: 25,3714           14031                           STODL    AVECTR     +4                         #                           0
048236,000209: 25,3715           06470                                    HI6ZEROS                              #          8-13D= CVECTR= -SOB  B-1
048237,000210: 25,3716           57525                           PDDL     DCOMP                                 #  PD 10D                  COB
048238,000211: 25,3717           00043                                    SOB                                   
048239,000212: 25,3720           63325                           PDDL     PDVL                                  #  PD 12D THEN PD 14D
048240,000213: 25,3721           00041                                    COB                                   
048241,000214: 25,3722           00033                                    BVECTR                                
048242,000215: 25,3723           63361                           VXSC     PDVL                                  #  PD 20D         BVECTR*SINI  B-2
048243,000216: 25,3724           14003                                    SINI                                  
048244,000217: 25,3725           00011                                    CVECTR                                
048245,000218: 25,3726           53361                           VXSC     VAD                                   #  PD 14D         CVECTR*COSI  B-2
048246,000219: 25,3727           14001                                    COSI                                  
048247,000220: 25,3730           77772                           VSL1                                           
048248,000221: 25,3731           24041                           STOVL    MMATRIX    +12D                       #  PD 8D  M2=BVECTR*SINI+CVECTR*COSI  B-1
048249,000222: 25,3732           63361                           VXSC     PDVL                                  #  PD 14D
048250,000223: 25,3733           14003                                    SINI                                  #                 CVECTR*SINI  B-2
048251,000224: 25,3734           00033                                    BVECTR                                
048252,000225: 25,3735           52361                           VXSC     VSU                                   #  PD 8D          BVECTR*COSI  B-2
048253,000226: 25,3736           14001                                    COSI                                  
048254,000227: 25,3737           65372                           VSL1     PDDL                                  #  PD 14D
048255,000228: 25,3740           00007                                    504F                                  #  8-13D=DVECTR=BVECTR*COSI-CVECTR*SINI B-1
048256,000229: 25,3741           74346                           COS      VXSC                                  
048257,000230: 25,3742           00011                                    DVECTR                                
048258,000231: 25,3743           73525                           PDDL     SIN                                   #  PD 20D  14-19D= DVECTR*COSF  B-2

Page 1136

048260,000233: 25,3744           00007                                    504F                                  
048261,000234: 25,3745           52361                           VXSC     VSU                                   #  PD 14D          AVECTR*SINF  B-2
048262,000235: 25,3746           00025                                    AVECTR                                
048263,000236: 25,3747           77772                           VSL1                                           
048264,000237: 25,3750           14033                           STODL    MMATRIX    +6                         #  M1= AVECTR*SINF-DVECTR*COSF  B-1
048265,000238: 25,3751           00007                                    504F                                  
048266,000239: 25,3752           74356                           SIN      VXSC                                  #  PD 8D
048267,000240: 25,3753           71525                           PDDL     COS                                   #  PD 14D  8-13D=DVECTR*SINF B-2
048268,000241: 25,3754           00007                                    504F                                  
048269,000242: 25,3755           53361                           VXSC     VAD                                   #  PD 8D         AVECTR*COSF B-2
048270,000243: 25,3756           00025                                    AVECTR                                
048271,000244: 25,3757           57572                           VSL1     VCOMP                                 
048272,000245: 25,3760           34025                           STCALL   MMATRIX                               #  M0= -(AVECTR*COSF+DVECTR*SINF)  B-1
048273,000246: 25,3761           00051                                    EARTHMXX                              
048274,000247:                                                                                                  #  COMPUTE X=X0+(XDOT)(T+T0)
048275,000248:                                                                                                  #  8-9D= XO (REVS B-0),PUSHLOC SET AT 12D
048276,000249:                                                                                                  #  10-11D=XDOT (REVS/CSEC) SCALED B+23 FOR WEARTH,B+28 FOR NODDOT AND BDOT
048277,000250:                                                                                                  #                          AND B+27 FOR FDOT
048278,000251:                                                                                                  #   X1=DIFFERENCE IN 23 AND SCALING OF XDOT,=0 FOR WEARTH,5 FOR NODDOT AND
048279,000252:                                                                                                  #                                           BDOT AND 4 FOR FDOT
048280,000253:                                                                                                  #  6-7D=T (CSEC B-28), TIMSUBO= (CSEC B-42 TRIPLE PREC.)
048281,000254: 
048282,000255: 24,3741                                           BANK     24                                    
048283,000256: 24,2000                                           SETLOC   PLANTIN                               
048284,000257: 24,2000                                           BANK                                           
048285,000258: 
048286,000259: 24,3741           54345        NEWANGLE           DLOAD    SR                                    #  ENTER PD 12D
048287,000260: 24,3742           00007                                    6D                                    
048288,000261: 24,3743           20617                                    14D                                   
048289,000262: 24,3744           72371                           TAD      TLOAD                                 #  CHANGE MODE TO TP
048290,000263: 24,3745           01707                                    TIMSUBO                               
048291,000264: 24,3746           00155                                    MPAC                                  
048292,000265: 24,3747           14017                           STODL    TIMSUBM                               #  T+T0 CSEC B-42
048293,000266: 24,3750           00020                                    TIMSUBM    +1                         
048294,000267: 24,3751           77605                           DMP                                            #  PD 10D  MULT BY XDOT IN 10-11D
048295,000268: 24,3752           43257                           SL*      DAD                                   #  PD 8D   ADD XO IN 8-9D AFTER SHIFTING
048296,000269: 24,3753           20206                                    5,1                                   #          SUCH THAT SCALING IS B-0
048297,000270: 24,3754           67206                           PUSH     SLOAD                                 #  PD 10D SAVE PARTIAL (X0+XDOT*T) IN 8-9D
048298,000271: 24,3755           00017                                    TIMSUBM                               
048299,000272: 24,3756           41261                           SL       DMP                                   
048300,000273: 24,3757           20212                                    9D                                    
048301,000274: 24,3760           00013                                    10D                                   #  XDOT
048302,000275: 24,3761           43257                           SL*      DAD                                   #  PD 8D   SHIFT SUCH THAT THIS PART OF X
048303,000276: 24,3762           20213                                    10D,1                                 #          IS SCALED REVS/CSEC B-0
048304,000277: 24,3763           77600                           BOV                                            #  TURN OFF OVERFLOW IF SET BY SHIFT
048305,000278: 24,3764           51765                                    +1                                    #  INSTRUCTION BEFORE EXITING
048306,000279: 24,3765           77616                           RVQ                                            #  MPAC=X= X0+(XDOT)(T+T0)  REVS B0
048307,000280: 

Page 1137

048309,000282:                                                                                                  #  ..... EARTHMX SUBROUTINE .....
048310,000283:                                                                                                  #  SUBROUTINE TO COMPUTE THE TRANSFORMATION MATRIX M FOR THE EARTH
048311,000284: 
048312,000285:                                                                                                  #  CALLING SEQUENCE
048313,000286:                                                                                                  #   L       CALL
048314,000287:                                                                                                  #   L+1            EARTHMX
048315,000288: 
048316,000289:                                                                                                  #  SUBROUTINES USED
048317,000290:                                                                                                  #   NEWANGLE
048318,000291: 
048319,000292:                                                                                                  #  INPUT
048320,000293:                                                                                                  #     INPUT AVAILABLE FROM LAUNCH DATA     AZO  REVS B-0
048321,000294:                                                                                                  #                                          TEPHEM  CSEC B-42
048322,000295:                                                                                                  #   6-7D= TIME CSEC B-28
048323,000296: 
048324,000297:                                                                                                  #  OUTPUT
048325,000298:                                                                                                  #   MMATRIX= 3X3 M MATRIX B-1   (STORED IN VAC AREA)
048326,000299: 
048327,000300: 26,3745                                           BANK     26                                    
048328,000301: 26,2000                                           SETLOC   PLANTIN1                              
048329,000302: 26,2000                                           BANK                                           
048330,000303: 26,3745                                           COUNT*   $$/LUROT                              
048331,000304: 
048332,000305: 26,3745           40220        EARTHMX            STQ      SETPD                                 #  SET   8-9D=AZO
048333,000306: 26,3746           00051                                    EARTHMXX                              
048334,000307: 26,3747           00011                                    8D                                    #  10-11D=WEARTH
048335,000308: 26,3750           77770                           AXT,1                                          #  FOR SL 5, AND SL 10  IN NEWANGLE
048336,000309: 26,3751           00000                                    0                                     
048337,000310: 26,3752           65345                           DLOAD    PDDL                                  #    LEAVING PD SET AT 12D FOR NEWANGLE
048338,000311: 26,3753           14023                                    AZO                                   
048339,000312: 26,3754           14021                                    WEARTH                                
048340,000313: 26,3755           45006                           PUSH     CALL                                  
048341,000314: 26,3756           51741                                    NEWANGLE                              
048342,000315: 26,3757           41401                           SETPD    PUSH                                  #  18-19D=504AZ
048343,000316: 26,3760           00023                                    18D                                   #                     COS(AZ) SIN(AZ) 0
048344,000317: 26,3761           65346                           COS      PDDL                                  #  20-37D=  MMATRIX= -SIN(AZ) COS(AZ) 0 B-1
048345,000318: 26,3762           00023                                    504AZ                                 #                      0       0      1
048346,000319: 26,3763           65356                           SIN      PDDL                                  
048347,000320: 26,3764           06470                                    HI6ZEROS                              
048348,000321: 26,3765           73525                           PDDL     SIN                                   
048349,000322: 26,3766           00023                                    504AZ                                 
048350,000323: 26,3767           65276                           DCOMP    PDDL                                  
048351,000324: 26,3770           00023                                    504AZ                                 
048352,000325: 26,3771           63346                           COS      PDVL                                  
048353,000326: 26,3772           06470                                    HI6ZEROS                              
048354,000327: 26,3773           41525                           PDDL     PUSH                                  
048355,000328: 26,3774           06466                                    HIDPHALF                              
048356,000329: 26,3775           77650                           GOTO                                           
048357,000330: 26,3776           00051                                    EARTHMXX                              
048358,000331: 

Page 1138

048360,000333:                                                                                                  #  ..... EARTHL SUBROUTINE .....
048361,000334:                                                                                                  #  SUBROUTINE TO COMPUTE L VECTOR FOR EARTH
048362,000335: 
048363,000336:                                                                                                  #  CALLING SEQUENCE
048364,000337:                                                                                                  #   L       CALL
048365,000338:                                                                                                  #   L+1            EARTHL
048366,000339: 
048367,000340:                                                                                                  #  INPUT
048368,000341:                                                                                                  #   AXO,AYO SET AT LAUNCH TIME WITH AYO IMMEDIATELY FOLLOWING AXO IN CORE
048369,000342: 
048370,000343:                                                                                                  #  OUTPUT
048371,000344:                                                                                                  #            -AX
048372,000345:                                                                                                  #    MPAC=   -AY    RADIANS B-0
048373,000346:                                                                                                  #              0
048374,000347: 
048375,000348: 06,3761                                           BANK     06                                    
048376,000349: 06,2000                                           SETLOC   EARTHLOC                              
048377,000350: 06,2000                                           BANK                                           
048378,000351: 06,3761                                           COUNT*   $$/LUROT                              
048379,000352: 
048380,000353: 06,3761           57545        EARTHL             DLOAD    DCOMP                                 
048381,000354: 06,3762           01714                                    AXO                                   
048382,000355: 06,3763           14017                           STODL    504LPL                                
048383,000356: 06,3764           01712                                    -AYO                                  
048384,000357: 06,3765           14021                           STODL    504LPL     +2                         
048385,000358: 06,3766           24007                                    LO6ZEROS                              
048386,000359: 06,3767           24023                           STOVL    504LPL     +4                         
048387,000360: 06,3770           00017                                    504LPL                                
048388,000361: 06,3771           77616                           RVQ                                            
048389,000362: 

Page 1139

048391,000364:                                                                                                  #  CONSTANTS AND ERASABLE ASSIGNMENTS
048392,000365: 06,3772  12,2004               1B1                =        DP1/2                                 #  1  SCALED B-1
048393,000366: 06,3772  0000050               RPREXIT            =        S1                                    #  R-TO-RP AND RP-TO-R SUBR EXIT
048394,000367: 06,3772  0000051               EARTHMXX           =        S2                                    #  EARTHMX,MOONMX SUBR. EXITS
048395,000368: 06,3772                        504RPR             =        0D                                    #  6 REGS  R OR RP VECTOR
048396,000369: 06,3772                        SINNODI            =        8D                                    #  2       SIN(NODI)
048397,000370: 06,3772                        DVECTR             =        8D                                    #  6       D VECTOR MOON
048398,000371: 06,3772                        CVECTR             =        8D                                    #  6       C VECTR MOON
048399,000372: 06,3772                        504AZ              =        18D                                   #  2      AZ
048400,000373: 06,3772                        TIMSUBM            =        14D                                   #  3       TIME SUB M (MOON) T+T0 IN GETAZ
048401,000374: 06,3772                        504LPL             =        14D                                   #  6       L OR LP VECTOR
048402,000375: 06,3772                        AVECTR             =        20D                                   #  6       A VECTOR (MOON)
048403,000376: 06,3772                        BVECTR             =        26D                                   #  6       B VECTOR (MOON)
048404,000377: 06,3772                        MMATRIX            =        20D                                   #  18      M MATRIX
048405,000378: 06,3772                        COB                =        32D                                   #  2       COS(B) B-1
048406,000379: 06,3772                        SOB                =        34D                                   #  2       SIN(B) B-1
048407,000380: 06,3772                        504F               =        6D                                    #  2       F(MOON)

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