API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Apr 23, 2025 1967-040F Spacecraft / (Earth) -102770 Discarded Titan 3C Transtage rocket body ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Wed May 14 22:37:19 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: Titan-3C RB (spacecraft) (-102770) {source: 1967-040F} Center body name: Earth (399) {source: DE441} Center-site name: Swan Reach Imaging, Glenalta ******************************************************************************* Start time : A.D. 2025-Apr-19 00:00:00.0000 UT Stop time : A.D. 2025-May-01 00:00:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 139.5701, -34.5440227, .056888 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 139.5701,5259.32258,-3596.34777 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : ITRF93 {East-longitude positive} Center radii : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Target primary : Earth Vis. interferer : MOON (R_eq= 1737.400) km {source: DE441} Rel. light bend : Sun {source: DE441} Rel. lght bnd GM: 1.3271E+11 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Calendar mode : Mixed Julian/Gregorian RTS-only print : NO EOP file : eop.250514.p250810 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-MAY-14. PREDICTS-> 2025-AUG-09 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation ( 0.0deg=YES),Airmass (>38.000=NO), Daylight (YES) Table cut-offs 2: Solar elongation ( 12.0,180.0=YES),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) *************************************************************************************************************************************************************************************************************************************************** Date__(UT)__HR:MN R.A._____(ICRF)_____DEC Azi____(a-app)___Elev APmag S-brt r rdot delta deldot S-O-T /r S-T-O T-O-M/MN_Illu% RA_3sigma DEC_3sigma Sky_motion Sky_mot_PA RelVel-ANG *************************************************************************************************************************************************************************************************************************************************** $$SOE >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2025-Apr-20 19:30 r 00 04 47.41 +14 01 03.3 72.903557 -0.243939 n.a. n.a. 1.004179213391 -0.6378321 0.00070584288450 0.4517803 26.7025 /L 153.2793 70.5/ 52.5124 n.a. n.a. 97.971192 102.02880 28.386867 2025-Apr-20 19:40 m 00 05 52.47 +13 57 38.8 71.675364 1.543590 n.a. n.a. 1.004176691685 -0.6193604 0.00070762600733 0.4374646 26.4438 /L 153.5381 70.6/ 52.4680 n.a. n.a. 95.715841 102.32206 28.113697 2025-Apr-20 19:50 Am 00 06 55.94 +13 54 14.2 70.424015 3.324234 n.a. n.a. 1.004174243843 -0.6009991 0.00070935299750 0.4237870 26.1915 /L 153.7905 70.7/ 52.4237 n.a. n.a. 93.511149 102.63267 27.854912 2025-Apr-20 20:00 Am 00 07 57.85 +13 50 49.3 69.147151 5.096776 n.a. n.a. 1.004171869430 -0.5827446 0.00071102640934 0.4107449 25.9454 /L 154.0367 70.8/ 52.3797 n.a. n.a. 91.358161 102.96106 27.611295 2025-Apr-20 20:10 Am 00 08 58.25 +13 47 24.0 67.842328 6.859921 n.a. n.a. 1.004169568025 -0.5645934 0.00071264878423 0.3983346 25.7055 /L 154.2768 70.9/ 52.3358 n.a. n.a. 89.258003 103.30763 27.383599 2025-Apr-20 20:20 Nm 00 09 57.16 +13 43 58.0 66.507008 8.612288 n.a. n.a. 1.004167339220 -0.5465421 0.00071422264693 0.3865515 25.4716 /L 154.5108 71.1/ 52.2920 n.a. n.a. 87.211872 103.67268 27.172533 2025-Apr-20 20:30 Nm 00 10 54.62 +13 40 31.3 65.138552 10.352399 n.a. n.a. 1.004165182622 -0.5285873 0.00071575050176 0.3753899 25.2435 /L 154.7390 71.2/ 52.2483 n.a. n.a. 85.221022 104.05646 26.978754 2025-Apr-20 20:40 Nm 00 11 50.66 +13 37 03.6 63.734213 12.078673 n.a. n.a. 1.004163097850 -0.5107260 0.00071723482873 0.3648434 25.0212 /L 154.9614 71.3/ 52.2045 n.a. n.a. 83.286755 104.45911 26.802856 2025-Apr-20 20:50 Cm 00 12 45.32 +13 33 34.9 62.291135 13.789416 n.a. n.a. 1.004161084535 -0.4929549 0.00071867807963 0.3549043 24.8045 /L 155.1782 71.4/ 52.1607 n.a. n.a. 81.410410 104.88065 26.645352 2025-Apr-20 21:00 Cm 00 13 38.63 +13 30 05.1 60.806346 15.482809 n.a. n.a. 1.004159142323 -0.4752709 0.00072008267406 0.3455642 24.5932 /L 155.3896 71.5/ 52.1168 n.a. n.a. 79.593348 105.32100 26.506664 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-22 19:30 r 00 11 03.55 +13 34 04.3 73.039876 0.336283 n.a. n.a. 1.004722552634 -0.5557830 0.00072126191014 0.3656772 26.9129 /L 153.0684 45.2/ 31.2051 n.a. n.a. 93.636695 102.30216 24.125767 2025-Apr-22 19:40 m 00 12 05.59 +13 30 44.6 71.797734 2.134288 n.a. n.a. 1.004720358019 -0.5381618 0.00072270103225 0.3521386 26.6684 /L 153.3130 45.3/ 31.1539 n.a. n.a. 91.536191 102.60523 23.763759 2025-Apr-22 19:50 Am 00 13 06.14 +13 27 24.5 70.532219 3.924948 n.a. n.a. 1.004718233896 -0.5206289 0.00072408712364 0.3392250 26.4299 /L 153.5517 45.3/ 31.1033 n.a. n.a. 89.480788 102.92612 23.415604 2025-Apr-22 20:00 Am 00 14 05.25 +13 24 04.0 69.240895 5.707036 n.a. n.a. 1.004716179920 -0.5031813 0.00072542268570 0.3269337 26.1973 /L 153.7844 45.4/ 31.0533 n.a. n.a. 87.471810 103.26522 23.082225 2025-Apr-22 20:10 Am 00 15 02.94 +13 20 42.8 67.921240 7.479245 n.a. n.a. 1.004714195754 -0.4858160 0.00072671020654 0.3152608 25.9704 /L 154.0113 45.5/ 31.0039 n.a. n.a. 85.510644 103.62290 22.764531 2025-Apr-22 20:20 Nm 00 15 59.23 +13 17 21.0 66.570632 9.240178 n.a. n.a. 1.004712281074 -0.4685301 0.00072795215721 0.3042017 25.7493 /L 154.2326 45.6/ 30.9551 n.a. n.a. 83.598736 103.99943 22.463411 2025-Apr-22 20:30 Nm 00 16 54.16 +13 13 58.2 65.186350 10.988341 n.a. n.a. 1.004710435566 -0.4513208 0.00072915098773 0.2937505 25.5337 /L 154.4483 45.7/ 30.9068 n.a. n.a. 81.737574 104.39501 22.179723 2025-Apr-22 20:40 Nm 00 17 47.77 +13 10 34.3 63.765558 12.722130 n.a. n.a. 1.004708658930 -0.4341853 0.00073030912324 0.2839006 25.3235 /L 154.6586 45.7/ 30.8590 n.a. n.a. 79.928682 104.80973 21.914281 2025-Apr-22 20:50 Cm 00 18 40.08 +13 07 09.3 62.305307 14.439826 n.a. n.a. 1.004706950875 -0.4171209 0.00073142895997 0.2746443 25.1187 /L 154.8635 45.8/ 30.8116 n.a. n.a. 78.173605 105.24356 21.667843 2025-Apr-22 21:00 Cm 00 19 31.12 +13 03 43.0 60.802527 16.139582 n.a. n.a. 1.004705311120 -0.4001250 0.00073251286118 0.2659729 24.9190 /L 155.0633 45.9/ 30.7645 n.a. n.a. 76.473900 105.69635 21.441099 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-24 19:30 r 00 17 07.77 +13 08 03.6 73.133362 0.947147 n.a. n.a. 1.005259707580 -0.4826747 0.00073462225003 0.2846177 27.2258 /L 152.7549 19.0/ 12.4288 n.a. n.a. 90.032669 102.59595 19.592229 2025-Apr-24 19:40 m 00 18 07.27 +13 04 47.0 71.878472 2.753897 n.a. n.a. 1.005257805446 -0.4657763 0.00073573661133 0.2717503 26.9939 /L 152.9870 19.0/ 12.3816 n.a. n.a. 88.062645 102.90888 19.132392 2025-Apr-24 19:50 Am 00 19 05.38 +13 01 29.9 70.599904 4.552890 n.a. n.a. 1.005255970927 -0.4489476 0.00073680063006 0.2594969 26.7676 /L 153.2134 19.0/ 12.3352 n.a. n.a. 86.133432 103.23996 18.685583 2025-Apr-24 20:00 Am 00 20 02.12 +12 58 12.3 69.295150 6.342888 n.a. n.a. 1.005254203748 -0.4321860 0.00073781676277 0.2478545 26.5469 /L 153.4342 19.0/ 12.2896 n.a. n.a. 84.246562 103.58959 18.252863 2025-Apr-24 20:10 Am 00 20 57.53 +12 54 53.8 67.961614 8.122570 n.a. n.a. 1.005252503646 -0.4154889 0.00073878745199 0.2368192 26.3317 /L 153.6495 19.0/ 12.2446 n.a. n.a. 82.403621 103.95809 17.835307 2025-Apr-24 20:20 Nm 00 21 51.63 +12 51 34.5 66.596597 9.890521 n.a. n.a. 1.005250870368 -0.3988538 0.00073971512234 0.2263859 26.1219 /L 153.8594 19.0/ 12.2005 n.a. n.a. 80.606238 104.34567 17.433990 2025-Apr-24 20:30 Nm 00 22 44.45 +12 48 14.2 65.197295 11.645226 n.a. n.a. 1.005249303670 -0.3822783 0.00074060217661 0.2165487 25.9174 /L 154.0641 19.0/ 12.1570 n.a. n.a. 78.856079 104.75250 17.049980 2025-Apr-24 20:40 Nm 00 23 36.01 +12 44 52.7 63.760787 13.385058 n.a. n.a. 1.005247803317 -0.3657598 0.00074145099171 0.2073007 25.7180 /L 154.2635 19.0/ 12.1142 n.a. n.a. 77.154831 105.17860 16.684328 2025-Apr-24 20:50 Cm 00 24 26.36 +12 41 30.0 62.284034 15.108271 n.a. n.a. 1.005246369086 -0.3492962 0.00074226391464 0.1986340 25.5237 /L 154.4579 19.0/ 12.0720 n.a. n.a. 75.504197 105.62388 16.338056 2025-Apr-24 21:00 Cm 00 25 15.51 +12 38 05.8 60.763873 16.812984 n.a. n.a. 1.005245000762 -0.3328850 0.00074304325842 0.1905394 25.3344 /L 154.6474 19.0/ 12.0305 n.a. n.a. 73.905881 106.08810 16.012137 2025-Apr-24 21:10 Cm 00 26 03.51 +12 34 40.2 59.197020 18.497175 n.a. n.a. 1.005243698140 -0.3165238 0.00074379129797 0.1830071 25.1499 /L 154.8320 19.0/ 11.9896 n.a. n.a. 72.361574 106.57086 15.707490 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-26 19:20 r 00 22 00.54 +12 45 34.7 74.436183 -0.223023 n.a. n.a. 1.005789280608 -0.4337741 0.00074514996487 0.2201142 27.8673 /L 152.1127 14.7/ 1.4089 n.a. n.a. 89.026979 102.54700 15.345721 2025-Apr-26 19:30 00 22 59.30 +12 42 21.0 73.190970 1.597660 n.a. n.a. 1.005787574563 -0.4174330 0.00074600470829 0.2072295 27.6407 /L 152.3394 14.5/ 1.3884 n.a. n.a. 87.132567 102.85038 14.771283 2025-Apr-26 19:40 00 23 56.73 +12 39 06.8 71.924186 3.411387 n.a. n.a. 1.005785933909 -0.4011478 0.00074680903123 0.1949512 27.4196 /L 152.5607 14.4/ 1.3684 n.a. n.a. 85.273964 103.17170 14.207788 2025-Apr-26 19:50 A 00 24 52.85 +12 35 52.1 70.633343 5.216983 n.a. n.a. 1.005784358429 -0.3849163 0.00074756536089 0.1832770 27.2040 /L 152.7765 14.2/ 1.3488 n.a. n.a. 83.452809 103.51136 13.656409 2025-Apr-26 20:00 A 00 25 47.68 +12 32 36.6 69.315865 7.013197 n.a. n.a. 1.005782847911 -0.3687360 0.00074827611332 0.1722036 26.9936 /L 152.9870 14.1/ 1.3296 n.a. n.a. 81.670790 103.86972 13.118354 2025-Apr-26 20:10 A 00 26 41.25 +12 29 20.3 67.969083 8.798689 n.a. n.a. 1.005781402156 -0.3526049 0.00074894368957 0.1617267 26.7885 /L 153.1922 14.0/ 1.3109 n.a. n.a. 79.929641 104.24704 12.594866 2025-Apr-26 20:20 Nm 00 27 33.57 +12 26 02.9 66.590225 10.572026 n.a. n.a. 1.005780020970 -0.3365205 0.00074957047165 0.1518412 26.5885 /L 153.3923 13.8/ 1.2927 n.a. n.a. 78.231132 104.64350 12.087210 2025-Apr-26 20:30 Nm 00 28 24.68 +12 22 44.5 65.176407 12.331670 n.a. n.a. 1.005778704172 -0.3204808 0.00075015881862 0.1425408 26.3936 /L 153.5873 13.7/ 1.2749 n.a. n.a. 76.577062 105.05918 11.596670 2025-Apr-26 20:40 Nm 00 29 14.61 +12 19 24.7 63.724626 14.075968 n.a. n.a. 1.005777451587 -0.3044836 0.00075071106246 0.1338183 26.2036 /L 153.7774 13.6/ 1.2574 n.a. n.a. 74.969244 105.49406 11.124536 2025-Apr-26 20:50 Cm 00 30 03.38 +12 16 03.7 62.231753 15.803144 n.a. n.a. 1.005776263049 -0.2885267 0.00075122950404 0.1256653 26.0184 /L 153.9627 13.5/ 1.2404 n.a. n.a. 73.409497 105.94797 10.672096 2025-Apr-26 21:00 Cm 00 30 51.02 +12 12 41.1 60.694536 17.511285 n.a. n.a. 1.005775138400 -0.2726080 0.00075171640899 0.1180726 25.8380 /L 154.1432 13.3/ 1.2239 n.a. n.a. 71.899635 106.42060 10.240619 2025-Apr-26 21:10 Cm 00 31 37.56 +12 09 16.9 59.109590 19.198328 n.a. n.a. 1.005774077493 -0.2567255 0.00075217400358 0.1110298 25.6622 /L 154.3191 13.2/ 1.2077 n.a. n.a. 70.441454 106.91145 9.8313400 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-28 19:20 r 00 27 39.38 +12 20 00.7 74.465922 0.468313 n.a. n.a. 1.006305234048 -0.3732062 0.00075509744578 0.1439684 28.3778 /L 151.6017 42.0/ 1.8426 n.a. n.a. 86.619553 102.73027 10.316497 2025-Apr-28 19:30 00 28 36.42 +12 16 49.5 73.209702 2.294623 n.a. n.a. 1.006303770288 -0.3574019 0.00075564797903 0.1316203 28.1608 /L 151.8188 41.9/ 1.8703 n.a. n.a. 84.825631 103.04012 9.6372985 2025-Apr-28 19:40 00 29 32.19 +12 13 37.7 71.931513 4.113636 n.a. n.a. 1.006302369800 -0.3416389 0.00075615021201 0.1198694 27.9490 /L 152.0307 41.8/ 1.8981 n.a. n.a. 83.064691 103.36795 8.9682116 2025-Apr-28 19:50 00 30 26.72 +12 10 25.1 70.628804 5.924163 n.a. n.a. 1.006301032423 -0.3259152 0.00075660653433 0.1087129 27.7424 /L 152.2374 41.8/ 1.9259 n.a. n.a. 81.338498 103.71414 8.3105429 2025-Apr-28 20:00 A 00 31 20.02 +12 07 11.7 69.298935 7.724935 n.a. n.a. 1.006299758004 -0.3102286 0.00075701932322 0.0981475 27.5409 /L 152.4391 41.7/ 1.9536 n.a. n.a. 79.648863 104.07896 7.6656539 2025-Apr-28 20:10 A 00 32 12.12 +12 03 57.3 67.939167 9.514594 n.a. n.a. 1.006298546399 -0.2945771 0.00075739093963 0.0881684 27.3444 /L 152.6357 41.7/ 1.9813 n.a. n.a. 77.997636 104.46266 7.0349571 2025-Apr-28 20:20 N 00 33 03.05 +12 00 41.8 66.546656 11.291686 n.a. n.a. 1.006297397472 -0.2789587 0.00075772372420 0.0787702 27.1528 /L 152.8274 41.6/ 2.0089 n.a. n.a. 76.386694 104.86534 6.4199100 2025-Apr-28 20:30 N 00 33 52.82 +11 57 25.1 65.118438 13.054646 n.a. n.a. 1.006296311095 -0.2633714 0.00075801999325 0.0699462 26.9661 /L 153.0142 41.5/ 2.0365 n.a. n.a. 74.817938 105.28704 5.8220084 2025-Apr-28 20:40 N 00 34 41.46 +11 54 07.1 63.651428 14.801796 n.a. n.a. 1.006295287146 -0.2478133 0.00075828203467 0.0616889 26.7841 /L 153.1964 41.5/ 2.0639 n.a. n.a. 73.293278 105.72764 5.2427769 2025-Apr-28 20:50 C 00 35 29.01 +11 50 47.5 62.142412 16.531325 n.a. n.a. 1.006294325513 -0.2322824 0.00075851210382 0.0539896 26.6067 /L 153.3738 41.5/ 2.0913 n.a. n.a. 71.814625 106.18691 4.6837578 2025-Apr-28 21:00 C 00 36 15.48 +11 47 26.4 60.588044 18.241285 n.a. n.a. 1.006293426091 -0.2167768 0.00075871241942 0.0468387 26.4339 /L 153.5467 41.4/ 2.1185 n.a. n.a. 70.383876 106.66445 4.1464980 2025-Apr-28 21:10 C 00 37 00.91 +11 44 03.6 58.984845 19.929572 n.a. n.a. 1.006292588784 -0.2012945 0.00075888515938 0.0402255 26.2656 /L 153.7152 41.4/ 2.1456 n.a. n.a. 69.002909 107.15968 3.6325327 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-30 19:20 00 33 05.76 +11 54 52.2 74.458255 1.197626 n.a. n.a. 1.006808657087 -0.3146650 0.00076359494396 0.0682801 28.9803 /L 150.9985 70.0/ 13.3094 n.a. n.a. 84.625582 102.89086 4.9919399 2025-Apr-30 19:30 00 34 01.36 +11 51 43.0 73.191424 3.028310 n.a. n.a. 1.006807426705 -0.2993263 0.00076384379195 0.0564193 28.7717 /L 151.2072 69.9/ 13.3833 n.a. n.a. 82.922372 103.20657 4.2106427 2025-Apr-30 19:40 00 34 55.76 +11 48 33.1 71.902150 4.851363 n.a. n.a. 1.006806257773 -0.2840155 0.00076404625594 0.0451466 28.5681 /L 151.4109 69.9/ 13.4570 n.a. n.a. 81.249835 103.54021 3.4391691 2025-Apr-30 19:50 00 35 48.98 +11 45 22.4 70.587821 6.665582 n.a. n.a. 1.006805150183 -0.2687307 0.00076420468881 0.0344591 28.3695 /L 151.6097 69.8/ 13.5304 n.a. n.a. 79.609840 103.89210 2.6789727 2025-Apr-30 20:00 A 00 36 41.04 +11 42 10.7 69.245735 8.469678 n.a. n.a. 1.006804103835 -0.2534700 0.00076432142963 0.0243528 28.1758 /L 151.8036 69.8/ 13.6036 n.a. n.a. 78.004296 104.26247 1.9315748 2025-Apr-30 20:10 A 00 37 31.95 +11 38 57.8 67.873084 10.262274 n.a. n.a. 1.006803118637 -0.2382315 0.00076439879977 0.0148228 27.9868 /L 151.9926 69.8/ 13.6765 n.a. n.a. 76.435145 104.65149 1.1985608 2025-Apr-30 20:20 A 00 38 21.74 +11 35 43.8 66.466949 12.041891 n.a. n.a. 1.006802194502 -0.2230134 0.00076443909877 0.0058632 27.8026 /L 152.1770 69.7/ 13.7491 n.a. n.a. 74.904352 105.05923 0.4815744 2025-Apr-30 20:30 N 00 39 10.43 +11 32 28.5 65.024292 13.806938 n.a. n.a. 1.006801331354 -0.2078139 0.00076444460036 -0.0025331 27.6231 /L 152.3567 69.7/ 13.8213 n.a. n.a. 73.413901 105.48563 -0.217689 2025-Apr-30 20:40 N 00 39 58.05 +11 29 11.6 63.541943 15.555706 n.a. n.a. 1.006800529122 -0.1926310 0.00076441754831 -0.0103739 27.4480 /L 152.5318 69.7/ 13.8931 n.a. n.a. 71.965779 105.93052 -0.897492 2025-Apr-30 20:50 N 00 40 44.62 +11 25 53.3 62.016601 17.286351 n.a. n.a. 1.006799787743 -0.1774631 0.00076436015233 -0.0176683 27.2775 /L 152.7025 69.7/ 13.9646 n.a. n.a. 70.561970 106.39358 -1.556067 2025-Apr-30 21:00 C 00 41 30.17 +11 22 33.2 60.444827 18.996883 n.a. n.a. 1.006799107162 -0.1623082 0.00076427458391 -0.0244263 27.1113 /L 152.8688 69.6/ 14.0355 n.a. n.a. 69.204441 106.87432 -2.191627 2025-Apr-30 21:10 C 00 42 14.73 +11 19 11.4 58.823047 20.685157 n.a. n.a. 1.006798487328 -0.1471647 0.00076416297218 -0.0306590 26.9494 /L 153.0308 69.6/ 14.1060 n.a. n.a. 67.895132 107.37208 -2.802388 >..... Daylight Cut-off Requested .....< $$EOE *************************************************************************************************************************************************************************************************************************************************** Column meaning: TIME Times PRIOR to 1962 are UT1, a mean-solar time closely related to the prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1 using integer leap-seconds for 1972 and later years. Conversion from the internal Barycentric Dynamical Time (TDB) of solar system dynamics to the non-uniform civil UT time-scale requested for output has not been determined for UTC times after the next July or January 1st. Therefore, the last known leap-second is used as a constant over future intervals. Time tags refer to the UT time-scale conversion from TDB on Earth regardless of observer location within the solar system, although clock rates may differ due to the local gravity field and no analog to "UT" may be defined for that location. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. CALENDAR SYSTEM Mixed calendar mode was active such that calendar dates after AD 1582-Oct-15 (if any) are in the modern Gregorian system. Dates prior to 1582-Oct-5 (if any) are in the Julian calendar system, which is automatically extended for dates prior to its adoption on 45-Jan-1 BC. The Julian calendar is useful for matching historical dates. The Gregorian calendar more accurately corresponds to the Earth's orbital motion and seasons. A "Gregorian-only" calendar mode is available if such physical events are the primary interest. NOTE: "n.a." in output means quantity "not available" at the print-time. SOLAR PRESENCE (OBSERVING SITE) Time tag is followed by a blank, then a solar-presence condition code: '*' Daylight (refracted solar upper-limb on or above apparent horizon) 'C' Civil twilight/dawn 'N' Nautical twilight/dawn 'A' Astronomical twilight/dawn ' ' Night OR geocentric ephemeris LUNAR PRESENCE WITH TARGET RISE/TRANSIT/SET EVENT MARKER (OBSERVING SITE) The solar-presence code column is immediately followed by another marker: 'm' Refracted upper-limb of Moon on or above apparent horizon ' ' Refracted upper-limb of Moon below apparent horizon OR geocentric The lunar presence marker (an ongoing state) can be over-ridden by a target event marker if an event has occurred since the last output step: 'r' Rise (target body on or went above cut-off RTS elevation) 'e' Elevation max (target body maximum elevation angle has occurred) 't' Transit (target body at or passed through observer meridian) 's' Set (target body on or went below cut-off RTS elevation) RTS MARKERS (TVH) Rise and set are with respect to the reference ellipsoid true visual horizon defined by the elevation cut-off angle. Horizon dip and yellow-light refraction (Earth only) are considered. Accuracy is < or = to twice the requested search step-size. 'R.A._____(ICRF)_____DEC' = Astrometric right ascension and declination of the target center with respect to the observing site (coordinate origin) in the reference frame of the planetary ephemeris (ICRF). Compensated for down-leg light-time delay aberration. Units: RA in hours-minutes-seconds of time, HH MM SS.ff{ffff} DEC in degrees-minutes-seconds of arc, sDD MN SC.f{ffff} 'Azi____(a-app)___Elev' = Airless apparent azimuth and elevation of target center. Compensated for light-time, the gravitational deflection of light, stellar aberration, precession and nutation. Azimuth is measured clockwise from north: North(0) -> East(90) -> South(180) -> West(270) -> North (360) Elevation angle is with respect to a plane perpendicular to the reference surface local zenith direction. TOPOCENTRIC ONLY. Units: DEGREES 'APmag S-brt' = The targets' approximate apparent visual magnitude and surface brightness. For planets and natural satellites, output is restricted to solar phase angles covered by observational data. Outside the observed phase angle range, "n.a." may be output to avoid extrapolation beyond the limit of model validity. For Earth-based observers, the estimated dimming due to atmospheric absorption (extinction) is available as a separate, requestable quantity. Surface brightness is the average airless visual magnitude of a square-arcsecond of the illuminated portion of the apparent disk. It is computed only if the target radius is known. Units: MAGNITUDES & MAGNITUDES PER SQUARE ARCSECOND 'r rdot' = The Sun's apparent range ("r", light-time aberrated) and range-rate ("rdot") relative to the target center, as seen by the observer. A positive "rdot" means the target center was moving away from the Sun, negative means moving toward the Sun. Units: AU and KM/S 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S 'S-O-T /r' = Sun-Observer-Target apparent SOLAR ELONGATION ANGLE seen from the observers' location at print-time. The '/r' column provides a code indicating the targets' apparent position relative to the Sun in the observers' sky, as described below: Case A: For an observing location on the surface of a rotating body, that body rotational sense is considered: /T indicates target TRAILS Sun (evening sky: rises and sets AFTER Sun) /L indicates target LEADS Sun (morning sky: rises and sets BEFORE Sun) Case B: For an observing point that does not have a rotational model (such as a spacecraft), the "leading" and "trailing" condition is defined by the observers' heliocentric ORBITAL motion: * If continuing in the observers' current direction of heliocentric motion would encounter the targets' apparent longitude first, followed by the Sun's, the target LEADS the Sun as seen by the observer. * If the Sun's apparent longitude would be encountered first, followed by the targets', the target TRAILS the Sun. Two other codes can be output: /* indicates observer is Sun-centered (undefined) /? Target is aligned with Sun center (no lead or trail) The S-O-T solar elongation angle is numerically the minimum separation angle of the Sun and target in the sky in any direction. It does NOT indicate the amount of separation in the leading or trailing directions, which would be defined along the equator of a spherical coordinate system. Units: DEGREES 'S-T-O' = The Sun-Target-Observer angle; the interior vertex angle at target center formed by a vector from the target to the apparent center of the Sun (at reflection time on the target) and the apparent vector from target to the observer at print-time. Slightly different from true PHASE ANGLE (requestable separately) at the few arcsecond level in that it includes stellar aberration on the down-leg from target to observer. Units: DEGREES 'T-O-M/MN_Illu%' = Target-Observer-Moon LUNAR ELONGATION angle and illuminated percentage. The apparent lunar elongation angle between target body center and Moon center, seen from the observing site, along with fraction of the lunar disk illuminated by the Sun. A negative lunar elongation angle indicates the target center is behind the Moon. Units: DEGREES & PERCENT 'RA_3sigma DEC_3sigma' = Uncertainty in Right-Ascension and Declination. Output values are the formal +/- 3 standard-deviations (sigmas) around nominal position. Units: ARCSECONDS 'Sky_motion Sky_mot_PA RelVel-ANG' = Total apparent angular rate of the target in the plane-of-sky. "Sky_mot_PA" is the position angle of the target's direction of motion in the plane-of-sky, measured counter-clockwise from the apparent of-date north pole direction. "RelVel-ANG" is the flight path angle of the target's relative motion with respect to the observer's line-of-sight, in the range [-90,+90], where positive values indicate motion away from the observer, negative values are toward the observer: -90 = target is moving directly toward the observer 0 = target is moving at right angles to the observer's line-of-sight +90 = target is moving directly away from the observer UNITS: ARCSECONDS/MINUTE, DEGREES, DEGREES Computations by ... Solar System Dynamics Group, Horizons On-Line Ephemeris System 4800 Oak Grove Drive, Jet Propulsion Laboratory Pasadena, CA 91109 USA General site: https://ssd.jpl.nasa.gov/ Mailing list: https://ssd.jpl.nasa.gov/email_list.html System news : https://ssd.jpl.nasa.gov/horizons/news.html User Guide : https://ssd.jpl.nasa.gov/horizons/manual.html Connect : browser https://ssd.jpl.nasa.gov/horizons/app.html#/x API https://ssd-api.jpl.nasa.gov/doc/horizons.html command-line telnet ssd.jpl.nasa.gov 6775 e-mail/batch https://ssd.jpl.nasa.gov/ftp/ssd/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ***************************************************************************************************************************************************************************************************************************************************