Source Code

These source-code files were obtained by digitally photographing an Artemis 72 program listing from a private collection and then modifying pre-existing Comanche 55 (Apollo 11) source files to incorporate changes. Note that the page images presented online are of reduced quality, and that additional images may be available. Report any conversion errors or legibility problems in page images to info@sandroid.org. Notations on the program listing read, in part:

	GAP: ASSEMBLE REVISION 072 OF AGC PROGRAM ARTEMIS 
	BY NASA 2021114-011 11:40 FEB. 26, 1971

	THIS AGC PROGRAM SHALL ALSO BE REFERRED TO AS
				COLOSSUS 3
	THIS PROGRAM IS INTENDED FOR USE IN THE CM AS SPECIFIED
	IN REPORT R-577.  THIS PROGRAM WAS PREPARED UNDER OSR
	PROJECT 55-23890, SPONSORED BY THE MANNED SPACECRAFT
	CENTER OF THE NATIONAL AERONAUTICS AND SPACE
	ADMINISTRATION THROUGH CONTRACT NAS 9-4065 WITH THE
	CHARLES STARK DRAPER LABORATORY, MASSACHUSETTS INSTITUTE OF
	TECHNOLOGY, CAMBRIDGE, MASS.

052999,000002:                                                                                                 #  Copyright:     Public domain.
053000,000003:                                                                                                 #  Filename:      PLANETARY_INERTIAL_ORIENTATION.agc
053001,000004:                                                                                                 #  Purpose:       Part of the source code for Artemis (i.e., Colossus 3),
053002,000005:                                                                                                 #                 build 072.  This is for the Command Module's (CM) 
053003,000006:                                                                                                 #                 Apollo Guidance Computer (AGC), we believe for 
053004,000007:                                                                                                 #                 Apollo 15-17.
053005,000008:                                                                                                 #  Assembler:     yaYUL
053006,000009:                                                                                                 #  Contact:       Sergio Navarro <sergionavarrog@gmail.com>
053007,000010:                                                                                                 #  Website:       www.ibiblio.org/apollo/index.html
053008,000011:                                                                                                 #  Page scans:    www.ibiblio.org/apollo/ScansForConversion/Artemis072/
053009,000012:                                                                                                 #  Mod history:   2009-09-03 SN   Adapted from corresponding Comanche 055 file.
053010,000013:                                                                                                 #                 2009-09-05 JL   Fix typos. Remove code not in Artemis072.
053011,000014:                                                                                                 #                 2010-02-20 RSB  Un-##'d this header.
053012,000015: 

Page 1243

053014,000017:                                                                                                 #  PLANETARY INERTIAL ORIENTATION
053015,000018: 
053016,000019:                                                                                                 #  ..... RP-TO-R SUBROUTINE .....
053017,000020:                                                                                                 #  SUBROUTINE TO CONVERT RP (VECTOR IN PLANETARY COORDINATE SYSTEM, EITHER
053018,000021:                                                                                                 #  EARTH-FIXED OR MOON-FIXED) TO R (SAME VECTOR IN BASIC REF. SYSTEM)
053019,000022: 
053020,000023:                                                                                                 #         R = MT(T) * (RP + LP X RP)      MT = M MATRIX TRANSPOSE
053021,000024: 
053022,000025:                                                                                                 #  CALLING SEQUENCE
053023,000026:                                                                                                 #         L       CALL
053024,000027:                                                                                                 #         L+1             RP-TO-R
053025,000028: 
053026,000029:                                                                                                 #  SUBROUTINES USED
053027,000030:                                                                                                 #         EARTHMX, MOONMX, EARTHL
053028,000031: 
053029,000032:                                                                                                 #         ITEMS AVAILABLE FROM LAUNCH DATA
053030,000033:                                                                                                 #                 504LM = THE LIBRATION VECTOR L OF THE MOON AT TIME TIMSUBL, EXPRESSED
053031,000034:                                                                                                 #                 IN THE MOON-FIXED COORD. SYSTEM         RADIANS  B0
053032,000035: 
053033,000036:                                                                                                 #         ITEMS NECESSARY FOR SUBR. USED (SEE DESCRIPTION OF SUBR.)
053034,000037: 
053035,000038:                                                                                                 #  INPUT
053036,000039:                                                                                                 #         MPAC = 0 FOR EARTH, NON-ZERO FOR MOON
053037,000040:                                                                                                 #         0-5D = RP VECTOR
053038,000041:                                                                                                 #         6-7D = TIME
053039,000042: 
053040,000043:                                                                                                 #  OUTPUT
053041,000044:                                                                                                 #         MPAC = R VECTOR METERS B-29 FOR EARTH, B-27 FOR MOON
053042,000045: 
053043,000046: 26,2000                                          SETLOC   PLANTIN                               
053044,000047: 26,2000                                          BANK                                           
053045,000048: 
053046,000049: 26,3345                                          COUNT*   $$/LUROT                              
053047,000050: 
053048,000051: 26,3345           46020        RP-TO-R           STQ      BHIZ                                  
053049,000052: 26,3346           00050                                   RPREXIT                               
053050,000053: 26,3347           55362                                   RPTORA                                
053051,000054: 26,3350           77624                          CALL                                           #  COMPUTE M MATRIX FOR MOON
053052,000055: 26,3351           55416                                   MOONMX                                #  LP=LM FOR MOON  RADIANS B0
053053,000056: 26,3352           77775                          VLOAD                                          
053054,000057: 26,3353           02012                                   504LM                                 
053055,000058: 26,3354           53235        RPTORB            VXV      VAD                                   
053056,000059: 26,3355           00001                                   504RPR                                
053057,000060: 26,3356           00001                                   504RPR                                
053058,000061: 26,3357           52105                          VXM      GOTO                                  
053059,000062: 26,3360           00025                                   MMATRIX                               #  MPAC=R=MT(T)*(RP+LPXRP)
053060,000063: 26,3361           55406                                   RPRPXXXX                              #  RESET PUSHLOC TO 0 BEFORE EXITING
053061,000064: 26,3362           77624        RPTORA            CALL                                           #  EARTH COMPUTATIONS
053062,000065: 26,3363           55567                                   EARTHMX                               #  M MATRIX B-1
053063,000066:                                                                                                 #  AND L VECTOR RADIANS B0
053064,000067: 26,3364           76521                          MXV      VSL1                                  #  LP=M(T)*L  RAD B-0
053065,000068: 26,3365           00025                                   MMATRIX                               
053066,000069: 26,3366           77650                          GOTO                                           

Page 1244

053068,000071: 26,3367           55354                                   RPTORB                                
053069,000072: 

Page 1245

053071,000074:                                                                                                 #  ..... R-TO-RP SUBROUTINE .....
053072,000075:                                                                                                 #  SUBROUTINE TO CONVERT R (VECTOR IN REFERENCE COORD. SYSTEM) TO RP
053073,000076:                                                                                                 #  (VECTOR IN PLANETARY COORD SYSTEM) EITHER EARTH-FIXED OR MOON-FIXED
053074,000077: 
053075,000078:                                                                                                 #         RP = M(T) * (R - L X R)
053076,000079: 
053077,000080:                                                                                                 #  CALLING SEQUENCE
053078,000081:                                                                                                 #         L       CALL
053079,000082:                                                                                                 #         L+1             R-TO-RP
053080,000083: 
053081,000084:                                                                                                 #  SUBROUTINES USED
053082,000085:                                                                                                 #         EARTHMX, MOONMX, EARTHL
053083,000086: 
053084,000087:                                                                                                 #  INPUT
053085,000088:                                                                                                 #         MPAC = 0 FOR EARTH, NON-ZERO FOR MOON
053086,000089:                                                                                                 #         0-5D = R VECTOR
053087,000090:                                                                                                 #         6-7D = TIME
053088,000091: 
053089,000092:                                                                                                 #         ITEMS AVAILABLE FROM LAUNCH DATA
053090,000093:                                                                                                 #                 504LM = THE LIBRATION VECTOR L OF THE MOON AT TIME TIMSUBL, EXPRESSED
053091,000094:                                                                                                 #                 IN THE MOON-FIXED COORD. SYSTEM   RADIANS B0
053092,000095: 
053093,000096:                                                                                                 #         ITEMS NECESSARY FOR SUBROUTINES USED (SEE DESCRIPTION OF SUBR.)
053094,000097: 
053095,000098:                                                                                                 #  OUTPUT
053096,000099:                                                                                                 #         MPAC = RP VECTOR METERS B-29 FOR EARTH, B-27 FOR MOON
053097,000100: 
053098,000101: 26,3370           46020        R-TO-RP           STQ      BHIZ                                  
053099,000102: 26,3371           00050                                   RPREXIT                               
053100,000103: 26,3372           55412                                   RTORPA                                
053101,000104: 26,3373           77624                          CALL                                           
053102,000105: 26,3374           55416                                   MOONMX                                
053103,000106: 26,3375           61375                          VLOAD    VXM                                   
053104,000107: 26,3376           02012                                   504LM                                 #  LP=LM
053105,000108: 26,3377           00025                                   MMATRIX                               
053106,000109: 26,3400           77772                          VSL1                                           #  L = MT(T)*LP  RADIANS B0
053107,000110: 26,3401           51235        RTORPB            VXV      BVSU                                  
053108,000111: 26,3402           00001                                   504RPR                                
053109,000112: 26,3403           00001                                   504RPR                                
053110,000113: 26,3404           77721                          MXV                                            #  M(T)*(R-LXR)  B-2
053111,000114: 26,3405           00025                                   MMATRIX                               
053112,000115: 26,3406           40372        RPRPXXXX          VSL1     SETPD                                 
053113,000116: 26,3407           00001                                   0D                                    
053114,000117: 26,3410           77650                          GOTO                                           
053115,000118: 26,3411           00050                                   RPREXIT                               
053116,000119: 26,3412           77624        RTORPA            CALL                                           #  EARTH COMPUTATIONS
053117,000120: 26,3413           55567                                   EARTHMX                               
053118,000121: 26,3414           77650                          GOTO                                           #  MPAC=L=(-AX,-AY,0) RAD B-0
053119,000122: 26,3415           55401                                   RTORPB                                
053120,000123: 

Page 1246

053122,000125:                                                                                                 #  ..... MOONMX SUBROUTINE .....
053123,000126:                                                                                                 #  SUBROUTINE TO COMPUTE THE TRANSFORMATION MATRIX M FOR THE MOON
053124,000127: 
053125,000128:                                                                                                 #  CALLING SEQUENCE
053126,000129:                                                                                                 #         L       CALL
053127,000130:                                                                                                 #         L+1             MOONMX
053128,000131: 
053129,000132:                                                                                                 #  SUBROUTINES USED
053130,000133:                                                                                                 #         NEWANGLE
053131,000134: 
053132,000135:                                                                                                 #  INPUT
053133,000136:                                                                                                 #         6-7D = TIME
053134,000137: 
053135,000138:                                                                                                 #         ITEMS AVAILABLE FROM LAUNCH DATA
053136,000139:                                                                                                 #                 BSUBO, BDOT
053137,000140:                                                                                                 #                 TIMSUBO, NODIO, NODDOT, FSUBO, FDOT
053138,000141:                                                                                                 #                 COSI = COS(I) B-1
053139,000142:                                                                                                 #                 SINI = SIN(I) B-1
053140,000143:                                                                                                 #                 I IS THE ANGLE BETWEEN THE MEAN LUNAR EQUATORIAL PLANE AND THE
053141,000144:                                                                                                 #                 PLANE OF THE ECLIPTIC  (1 DEGREE  32.1 MINUTES)
053142,000145: 
053143,000146:                                                                                                 #  OUTPUT
053144,000147:                                                                                                 #         MMATRIX = 3X3 M MATRIX B-1   (STORED IN VAC AREA)
053145,000148: 
053146,000149: 26,3416           40220        MOONMX            STQ      SETPD                                 
053147,000150: 26,3417           00051                                   EARTHMXX                              
053148,000151: 26,3420           00011                                   8D                                    
053149,000152: 26,3421           77770                          AXT,1                                          #  B REQUIRES SL 0, SL 5 IN NEWANGLE
053150,000153: 26,3422           00005                                   5                                     
053151,000154: 26,3423           65345                          DLOAD    PDDL                                  #  PD 10D         8-9D=BSUBO
053152,000155: 26,3424           15647                                   BSUBO                                 #                         10-11D=BDOT
053153,000156: 26,3425           15641                                   BDOT                                  
053154,000157: 26,3426           45006                          PUSH     CALL                                  #  PD 12D
053155,000158: 26,3427           55543                                   NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= B  REVS B0
053156,000159: 26,3430           71406                          PUSH     COS                                   #  PD 10D
053157,000160: 26,3431           14041                          STODL    COB                                   #  PD 8D          COS(B) B-1
053158,000161: 26,3432           77756                          SIN                                            #                 SIN(B) B-1
053159,000162: 26,3433           14043                          STODL    SOB                                   #                 SETUP INPUT FOR NEWANGLE
053160,000163: 26,3434           15645                                   FSUBO                                 #                           8-9D=FSUBO
053161,000164: 26,3435           41525                          PDDL     PUSH                                  #  PD 10D THEN 12D        10-11D=FDOT
053162,000165: 26,3436           15637                                   FDOT                                  
053163,000166: 26,3437           45170                          AXT,1    CALL                                  #  F REQUIRES SL 1, SL 6 IN NEWANGLE
053164,000167: 26,3440           00004                                   4                                     
053165,000168: 26,3441           55543                                   NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= F REVS B0
053166,000169: 26,3442           14027                          STODL    AVECTR     +2                         #  SAVE F TEMP
053167,000170: 26,3443           15643                                   NODIO                                 #                           8-9D=NODIO
053168,000171: 26,3444           41525                          PDDL     PUSH                                  #  PD 10D THEN 12D        10-11D=NODDOT
053169,000172: 26,3445           15635                                   NODDOT                                #                           MPAC=T
053170,000173: 26,3446           45170                          AXT,1    CALL                                  #  NODE REQUIRES SL 0, SL 5 IN NEWANGLE
053171,000174: 26,3447           00005                                   5                                     
053172,000175: 26,3450           55543                                   NEWANGLE                              #  EXIT WITH PD 8D AND MPAC= NODI REVS B0

Page 1247

053174,000177: 26,3451           71406                          PUSH     COS                                   #  PD 10D   8-9D= NODI  REVS  B0
053175,000178: 26,3452           77606                          PUSH                                           #  PD 12D 10-11D= COS(NODI)  B-1
053176,000179: 26,3453           00025                          STORE    AVECTR                                
053177,000180: 26,3454           76405                          DMP      SL1R                                  
053178,000181: 26,3455           00041                                   COB                                   #                           COS(NODI)     B-1
053179,000182: 26,3456           14035                          STODL    BVECTR     +2                         #  PD 10D   20-25D=AVECTR= COB*SIN(NODI)
053180,000183: 26,3457           76405                          DMP      SL1R                                  #                           SOB*SIN(NODI)
053181,000184: 26,3460           00043                                   SOB                                   
053182,000185: 26,3461           14037                          STODL    BVECTR     +4                         #  PD 8D
053183,000186: 26,3462           41556                          SIN      PUSH                                  #  PD 10D          -SIN(NODI)     B-1
053184,000187: 26,3463           77676                          DCOMP                                          #           26-31D=BVECTR= COB*COS(NODI)
053185,000188: 26,3464           14033                          STODL    BVECTR                                #  PD 8D                    SOB*COS(NODI)
053186,000189: 26,3465           00027                                   AVECTR     +2                         #  MOVE F FROM TEMP LOC. TO 504F
053187,000190: 26,3466           14007                          STODL    504F                                  
053188,000191: 26,3467           76405                          DMP      SL1R                                  
053189,000192: 26,3470           00041                                   COB                                   
053190,000193: 26,3471           14027                          STODL    AVECTR     +2                         
053191,000194: 26,3472           00011                                   SINNODI                               #  8-9D=SIN(NODI)  B-1
053192,000195: 26,3473           76405                          DMP      SL1R                                  
053193,000196: 26,3474           00043                                   SOB                                   
053194,000197: 26,3475           14031                          STODL    AVECTR     +4                         #                           0
053195,000198: 26,3476           15336                                   HI6ZEROS                              #           8-13D= CVECTR= -SOB  B-1
053196,000199: 26,3477           57525                          PDDL     DCOMP                                 #  PD 10D           COB
053197,000200: 26,3500           00043                                   SOB                                   
053198,000201: 26,3501           63325                          PDDL     PDVL                                  #  PD 12D THEN PD 14D
053199,000202: 26,3502           00041                                   COB                                   
053200,000203: 26,3503           00033                                   BVECTR                                
053201,000204: 26,3504           63361                          VXSC     PDVL                                  #  PD 20D  BVECTR*SINI  B-2
053202,000205: 26,3505           15633                                   SINI                                  
053203,000206: 26,3506           00011                                   CVECTR                                
053204,000207: 26,3507           53361                          VXSC     VAD                                   #  PD 14D  CVECTR*COSI  B-2
053205,000208: 26,3510           15631                                   COSI                                  
053206,000209: 26,3511           77772                          VSL1                                           
053207,000210: 26,3512           24041                          STOVL    MMATRIX    +12D                       #  PD 8D  M2=BVECTR*SINI+CVECTR*COSI  B-1
053208,000211: 26,3513           63361                          VXSC     PDVL                                  #  PD 14D
053209,000212: 26,3514           15633                                   SINI                                  #                  CVECTR*SINI  B-2
053210,000213: 26,3515           00033                                   BVECTR                                
053211,000214: 26,3516           52361                          VXSC     VSU                                   #  PD 8D           BVECTR*COSI  B-2
053212,000215: 26,3517           15631                                   COSI                                  
053213,000216: 26,3520           65372                          VSL1     PDDL                                  #  PD 14D
053214,000217: 26,3521           00007                                   504F                                  #  8-13D=DVECTR=BVECTR*COSI-CVECTR*SINI B-1
053215,000218: 26,3522           74346                          COS      VXSC                                  
053216,000219: 26,3523           00011                                   DVECTR                                
053217,000220: 26,3524           73525                          PDDL     SIN                                   #  PD 20D  14-19D= DVECTR*COSF  B-2
053218,000221: 26,3525           00007                                   504F                                  
053219,000222: 26,3526           52361                          VXSC     VSU                                   #  PD 14D   AVECTR*SINF  B-2
053220,000223: 26,3527           00025                                   AVECTR                                
053221,000224: 26,3530           77772                          VSL1                                           
053222,000225: 26,3531           14033                          STODL    MMATRIX    +6                         #  M1= AVECTR*SINF-DVECTR*COSF  B-1
053223,000226: 26,3532           00007                                   504F                                  

Page 1248

053225,000228: 26,3533           74356                          SIN      VXSC                                  #  PD 8D
053226,000229: 26,3534           71525                          PDDL     COS                                   #  PD 14D  8-13D=DVECTR*SINF B-2
053227,000230: 26,3535           00007                                   504F                                  
053228,000231: 26,3536           53361                          VXSC     VAD                                   #  PD 8D          AVECTR*COSF B-2
053229,000232: 26,3537           00025                                   AVECTR                                
053230,000233: 26,3540           57572                          VSL1     VCOMP                                 
053231,000234: 26,3541           34025                          STCALL   MMATRIX                               #  M0= -(AVECTR*COSF+DVECTR*SINF)  B-1
053232,000235: 26,3542           00051                                   EARTHMXX                              
053233,000236: 
053234,000237:                                                                                                 #  COMPUTE X=X0+(XDOT)(T+T0)
053235,000238:                                                                                                 #  8-9D= X0 (REVS B-0), PUSHLOC SET AT 12D
053236,000239:                                                                                                 #  10-11D=XDOT (REVS/CSEC) SCALED B+23 FOR WEARTH,B+28 FOR NODDOT AND BDOT
053237,000240:                                                                                                 #                         AND B+27 FOR FDOT
053238,000241:                                                                                                 #  X1=DIFFERENCE IN 23 AND SCALING OF XDOT, =0 FOR WEARTH, 5 FOR NDDOT AND
053239,000242:                                                                                                 #                                         BDOT AND 4 FOR FDOT
053240,000243:                                                                                                 #  6-7D=T (CSEC B-28), TIMSUBO= (CSEC B-42 TRIPLE PREC.)
053241,000244: 
053242,000245: 26,3543           54345        NEWANGLE          DLOAD    SR                                    #  ENTER PD 12D
053243,000246: 26,3544           00007                                   6D                                    
053244,000247: 26,3545           20617                                   14D                                   
053245,000248: 26,3546           72371                          TAD      TLOAD                                 #  CHANGE MODE TO TP
053246,000249: 26,3547           01707                                   TIMSUBO                               
053247,000250: 26,3550           00155                                   MPAC                                  
053248,000251: 26,3551           14017                          STODL    TIMSUBM                               #  T+T0 CSEC B-42
053249,000252: 26,3552           00020                                   TIMSUBM    +1                         
053250,000253: 26,3553           77605                          DMP                                            #  PD 10D  MULT BY XDOT IN 10-11D
053251,000254: 26,3554           43257                          SL*      DAD                                   #  PD 8D   ADD X0 IN 8-9D AFTER SHIFTING
053252,000255: 26,3555           20206                                   5,1                                   #          SUCH THAT SCALING IS B-0
053253,000256: 26,3556           67206                          PUSH     SLOAD                                 #  PD 10D SAVE PARTIAL (X0+XDOT*T) IN 8-9D
053254,000257: 26,3557           00017                                   TIMSUBM                               
053255,000258: 26,3560           41261                          SL       DMP                                   
053256,000259: 26,3561           20212                                   9D                                    
053257,000260: 26,3562           00013                                   10D                                   #  XDOT
053258,000261: 26,3563           43257                          SL*      DAD                                   #  PD 8D   SHIFT SUCH THAT THIS PART OF X
053259,000262: 26,3564           20213                                   10D,1                                 #          IS SCALED REVS/CSEC B-0
053260,000263: 26,3565           43400        HERE              BOV      RVQ                                   #  TURN OFF OVERFLOW IF SET BY SHIFT
053261,000264: 26,3566           55565                                   HERE                                  #         INSTRUCTION BEFORE EXITING.
053262,000265:                                                                                                 #  MPAC=X=X0+(XDOT)(T+T0)  REVS B0
053263,000266: 

Page 1249

053265,000268:                                                                                                 #  ..... EARTHMX SUBROUTINE .....
053266,000269:                                                                                                 #  SUBROUTINE TO COMPUTE THE TRANSFORMATION MATRIX M FOR THE EARTH
053267,000270: 
053268,000271:                                                                                                 #  CALLING SEQUENCE
053269,000272:                                                                                                 #         L       CALL
053270,000273:                                                                                                 #         L+1             EARTHMX
053271,000274: 
053272,000275:                                                                                                 #  SUBROUTINE USED
053273,000276:                                                                                                 #         NEWANGLE
053274,000277: 
053275,000278:                                                                                                 #  INPUT
053276,000279:                                                                                                 #         INPUT AVAILABLE FROM LAUNCH DATA        AZO  REVS B-0
053277,000280:                                                                                                 #                                                 TEPHEM  CSEC B-42
053278,000281:                                                                                                 #         6-7D= TIME CSEC B-28
053279,000282: 
053280,000283:                                                                                                 #  OUTPUT
053281,000284:                                                                                                 #         MMATRIX= 3X3 M MATRIX B-1   (STORED IN VAC AREA)
053282,000285: 
053283,000286: 26,3567           40220        EARTHMX           STQ      SETPD                                 #  SET 8-9D=AZO
053284,000287: 26,3570           00051                                   EARTHMXX                              
053285,000288: 26,3571           00011                                   8D                                    #  10-11D=WEARTH
053286,000289: 26,3572           77770                          AXT,1                                          #  FOR SL 5, AND SL 10  IN NEWANGLE
053287,000290: 26,3573           00000                                   0                                     
053288,000291: 26,3574           65345                          DLOAD    PDDL                                  #    LEAVING PD SET AT 12D FOR NEWANGLE
053289,000292: 26,3575           15653                                   AZO                                   
053290,000293: 26,3576           15651                                   WEARTH                                
053291,000294: 26,3577           45006                          PUSH     CALL                                  
053292,000295: 26,3600           55543                                   NEWANGLE                              
053293,000296: 26,3601           41401                          SETPD    PUSH                                  #  18-19D=504AZ
053294,000297: 26,3602           00023                                   18D                                   #                      COS(AZ) SIN(AZ) 0
053295,000298: 26,3603           65346                          COS      PDDL                                  #  20-37D=  MMATRIX= -SIN(AZ) COS(AZ) 0 B-1
053296,000299: 26,3604           00023                                   504AZ                                 #                       0       0      1
053297,000300: 26,3605           65356                          SIN      PDDL                                  
053298,000301: 26,3606           15336                                   HI6ZEROS                              
053299,000302: 26,3607           73525                          PDDL     SIN                                   
053300,000303: 26,3610           00023                                   504AZ                                 
053301,000304: 26,3611           65276                          DCOMP    PDDL                                  
053302,000305: 26,3612           00023                                   504AZ                                 
053303,000306: 26,3613           63346                          COS      PDVL                                  
053304,000307: 26,3614           15336                                   HI6ZEROS                              
053305,000308: 26,3615           41525                          PDDL     PUSH                                  
053306,000309: 26,3616           15334                                   HIDPHALF                              

Page 1250

053308,000311:                                                                                                 #  ..... EARTHL SUBROUTINE .....
053309,000312:                                                                                                 #  SUBROUTINE TO COMPUTE L VECTOR FOR EARTH
053310,000313: 
053311,000314:                                                                                                 #  CALLING SEQUENCE
053312,000315:                                                                                                 #         L       CALL
053313,000316:                                                                                                 #         L+1             EARTHL
053314,000317: 
053315,000318:                                                                                                 #  INPUT
053316,000319:                                                                                                 #         AXO,AYO SET AT LAUNCH TIME WITH AYO IMMEDIATELY FOLLOWING AXO IN CORE
053317,000320: 
053318,000321:                                                                                                 #  OUTPUT
053319,000322:                                                                                                 #                 -AX
053320,000323:                                                                                                 #         MPAC=   -AY     RADIANS B-0
053321,000324:                                                                                                 #                   0
053322,000325: 
053323,000326: 26,3617           71201        EARTHL            SETPD    DLOAD                                 
053324,000327: 26,3620           00017                                   14D                                   
053325,000328: 26,3621           15336                                   HI6ZEROS                              
053326,000329: 26,3622           65325                          PDDL     PDDL                                  
053327,000330: 26,3623           01712                                   -AYO                                  
053328,000331: 26,3624           01714                                   AXO                                   
053329,000332: 26,3625           55476                          DCOMP    VDEF                                  
053330,000333: 26,3626           77650                          GOTO                                           
053331,000334: 26,3627           00051                                   EARTHMXX                              
053332,000335: 

Page 1251

053334,000337:                                                                                                 #  CONSTANTS AND ERASABLE ASSIGNMENTS
053335,000338: 
053336,000339: 26,3630  04,3757               1B1               =        DP1/2                                 #  1  SCALED B-1
053337,000340: 26,3630           17775 02052  COSI              2DEC*    9.996417320 E-1        B-1*            #  COS(5521.5 SEC.)
053338,000341: 26,3632           00333 10374  SINI              2DEC*    2.676579050 E-2        B-1*            #  SIN(5521.5 SEC.)
053339,000342: 26,3634  0000050               RPREXIT           =        S1                                    #  R-TO-RP AND RP-TO-R SUBR EXIT
053340,000343: 26,3634  0000051               EARTHMXX          =        S2                                    #  EARTHMX,MOONMX SUBR. EXITS
053341,000344: 26,3634                        504RPR            =        0D                                    #  6 REGS  R OR RP VECTOR
053342,000345: 26,3634                        SINNODI           =        8D                                    #  2        SIN(NODI)
053343,000346: 26,3634                        DVECTR            =        8D                                    #  6        D VECTOR MOON
053344,000347: 26,3634                        CVECTR            =        8D                                    #  6        C VECTR MOON
053345,000348: 26,3634                        504AZ             =        18D                                   #  2       AZ
053346,000349: 26,3634                        TIMSUBM           =        14D                                   #  3        TIME SUB M (MOON) T+T0 IN GETAZ
053347,000350: 26,3634                        504LPL            =        14D                                   #  6        L OR LP VECTOR
053348,000351: 26,3634                        AVECTR            =        20D                                   #  6        A VECTOR (MOON)
053349,000352: 26,3634                        BVECTR            =        26D                                   #  6        B VECTOR (MOON)
053350,000353: 26,3634                        MMATRIX           =        20D                                   #  18       M MATRIX
053351,000354: 26,3634                        COB               =        32D                                   #  2        COS(B) B-1
053352,000355: 26,3634                        SOB               =        34D                                   #  2        SIN(B) B-1
053353,000356: 26,3634                        504F              =        6D                                    #  2        F (MOON)
053354,000357: 26,3634           77665 42175  NODDOT            2DEC*    -1.703706128 E-11       B28*            #  REVS/CS.
053355,000358: 26,3636           22211 00636  FDOT              2DEC*    +4.253263471 E-9        B27*            #  REVS/CS.
053356,000359: 26,3640           77777 77767  BDOT              2DEC*    -1.145531390 E-16       B28*            #  REVS/CS.
053357,000360: 26,3642           34076 30363  NODIO             2DEC*    +8.788308600 E-1        B               #  REV.
053358,000361: 26,3644           24760 00133  FSUBO             2DEC*    +6.552737750 E-1        B               #  REV.
053359,000362: 26,3646           02052 35250  BSUBO             2DEC*    +6.511941688 E-2        B               #  REV.
053360,000363: 26,3650           37116 32631  WEARTH            2DEC*    +1.160576171 E-7        B23*            #  REV/CS.
053361,000364: 26,3652           30576 10326  AZO               2DEC*    +7.733314844 E-1        B               #  REVS.

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