API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Nov 07, 2025 1967-040F Spacecraft / (Earth) -102770 Discarded Titan 3C Transtage rocket body ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sat Nov 8 01:03:17 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.251107.p260203 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-NOV-07. PREDICTS-> 2026-FEB-02 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 07.75 +13 08 03.7 73.133297 0.947207 n.a. n.a. 1.005259709146 -0.4826733 0.00073462105386 0.2846177 27.2259 /L 152.7548 19.0/ 12.4288 n.a. n.a. 90.032273 102.59597 19.592334 2025-Apr-24 19:40 m 00 18 07.25 +13 04 47.1 71.878406 2.753957 n.a. n.a. 1.005257807017 -0.4657751 0.00073573541516 0.2717504 26.9940 /L 152.9869 19.0/ 12.3816 n.a. n.a. 88.062244 102.90890 19.132509 2025-Apr-24 19:50 Am 00 19 05.36 +13 01 30.0 70.599836 4.552950 n.a. n.a. 1.005255972503 -0.4489466 0.00073679943457 0.2594972 26.7677 /L 153.2133 19.0/ 12.3352 n.a. n.a. 86.133026 103.23999 18.685712 2025-Apr-24 20:00 Am 00 20 02.10 +12 58 12.3 69.295081 6.342948 n.a. n.a. 1.005254205328 -0.4321851 0.00073781556864 0.2478550 26.5470 /L 153.4341 19.0/ 12.2896 n.a. n.a. 84.246152 103.58962 18.253005 2025-Apr-24 20:10 Am 00 20 57.51 +12 54 53.9 67.961543 8.122630 n.a. n.a. 1.005252505230 -0.4154882 0.00073878625992 0.2368198 26.3318 /L 153.6494 19.0/ 12.2446 n.a. n.a. 82.403206 103.95812 17.835462 2025-Apr-24 20:20 Nm 00 21 51.61 +12 51 34.6 66.596524 9.890581 n.a. n.a. 1.005250871954 -0.3988533 0.00073971393303 0.2263867 26.1220 /L 153.8593 19.0/ 12.2005 n.a. n.a. 80.605819 104.34571 17.434159 2025-Apr-24 20:30 Nm 00 22 44.43 +12 48 14.3 65.197219 11.645286 n.a. n.a. 1.005249305257 -0.3822779 0.00074060099080 0.2165497 25.9175 /L 154.0640 19.0/ 12.1570 n.a. n.a. 78.855656 104.75254 17.050165 2025-Apr-24 20:40 Nm 00 23 35.99 +12 44 52.8 63.760709 13.385118 n.a. n.a. 1.005247804906 -0.3657597 0.00074144981013 0.2073019 25.7181 /L 154.2634 19.0/ 12.1142 n.a. n.a. 77.154404 105.17864 16.684530 2025-Apr-24 20:50 Cm 00 24 26.33 +12 41 30.0 62.283953 15.108330 n.a. n.a. 1.005246370675 -0.3492962 0.00074226273804 0.1986353 25.5238 /L 154.4578 19.0/ 12.0720 n.a. n.a. 75.503767 105.62393 16.338275 2025-Apr-24 21:00 Cm 00 25 15.49 +12 38 05.9 60.763790 16.813043 n.a. n.a. 1.005245002351 -0.3328851 0.00074304208755 0.1905410 25.3345 /L 154.6473 19.0/ 12.0305 n.a. n.a. 73.905447 106.08815 16.012375 2025-Apr-24 21:10 Cm 00 26 03.48 +12 34 40.2 59.196935 18.497233 n.a. n.a. 1.005243699728 -0.3165242 0.00074379013361 0.1830088 25.1499 /L 154.8319 19.0/ 11.9896 n.a. n.a. 72.361137 106.57092 15.707747 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-26 19:20 r 00 22 00.26 +12 45 35.3 74.435393 -0.222214 n.a. n.a. 1.005789301110 -0.4338372 0.00074513432451 0.2201751 27.8684 /L 152.1116 14.7/ 1.4089 n.a. n.a. 89.028342 102.54704 15.349855 2025-Apr-26 19:30 00 22 59.03 +12 42 21.6 73.190175 1.598460 n.a. n.a. 1.005787594812 -0.4174965 0.00074598931290 0.2072910 27.6418 /L 152.3383 14.5/ 1.3884 n.a. n.a. 87.133848 102.85043 14.775559 2025-Apr-26 19:40 00 23 56.46 +12 39 07.4 71.923385 3.412177 n.a. n.a. 1.005785953904 -0.4012118 0.00074679388298 0.1950132 27.4207 /L 152.5596 14.4/ 1.3684 n.a. n.a. 85.275169 103.17175 14.212211 2025-Apr-26 19:50 A 00 24 52.58 +12 35 52.7 70.632534 5.217763 n.a. n.a. 1.005784378168 -0.3849806 0.00074755046199 0.1833396 27.2050 /L 152.7754 14.2/ 1.3488 n.a. n.a. 83.453941 103.51143 13.660983 2025-Apr-26 20:00 A 00 25 47.41 +12 32 37.2 69.315047 7.013967 n.a. n.a. 1.005782867392 -0.3688008 0.00074826146601 0.1722667 26.9947 /L 152.9859 14.1/ 1.3296 n.a. n.a. 81.671852 103.86979 13.123084 2025-Apr-26 20:10 A 00 26 40.98 +12 29 20.9 67.968255 8.799448 n.a. n.a. 1.005781421378 -0.3526700 0.00074892929608 0.1617905 26.7896 /L 153.1911 14.0/ 1.3109 n.a. n.a. 79.930637 104.24712 12.599754 2025-Apr-26 20:20 Nm 00 27 33.30 +12 26 03.5 66.589385 10.572773 n.a. n.a. 1.005780039931 -0.3365861 0.00074955633428 0.1519055 26.5896 /L 153.3912 13.8/ 1.2927 n.a. n.a. 78.232067 104.64358 12.092261 2025-Apr-26 20:30 Nm 00 28 24.41 +12 22 45.0 65.175554 12.332405 n.a. n.a. 1.005778722870 -0.3205469 0.00075014493965 0.1426057 26.3946 /L 153.5863 13.7/ 1.2749 n.a. n.a. 76.577938 105.05928 11.601887 2025-Apr-26 20:40 Nm 00 29 14.34 +12 19 25.3 63.723758 14.076690 n.a. n.a. 1.005777470021 -0.3045501 0.00075069744423 0.1338837 26.2046 /L 153.7764 13.6/ 1.2574 n.a. n.a. 74.970065 105.49417 11.129922 2025-Apr-26 20:50 Cm 00 30 03.11 +12 16 04.2 62.230869 15.803853 n.a. n.a. 1.005776281216 -0.2885937 0.00075121614890 0.1257314 26.0195 /L 153.9616 13.5/ 1.2404 n.a. n.a. 73.410266 105.94809 10.677655 2025-Apr-26 21:00 Cm 00 30 50.75 +12 12 41.7 60.693633 17.511979 n.a. n.a. 1.005775156299 -0.2726755 0.00075170331930 0.1181392 25.8391 /L 154.1422 13.3/ 1.2239 n.a. n.a. 71.900356 106.42072 10.246353 2025-Apr-26 21:10 Cm 00 31 37.29 +12 09 17.5 59.108668 19.199006 n.a. n.a. 1.005774095121 -0.2567935 0.00075216118175 0.1110971 25.6633 /L 154.3181 13.2/ 1.2077 n.a. n.a. 70.442131 106.91157 9.8372523 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-28 19:20 r 00 27 38.70 +12 20 01.4 74.464146 0.470461 n.a. n.a. 1.006305284303 -0.3733932 0.00075505979151 0.1441419 28.3805 /L 151.5989 42.0/ 1.8426 n.a. n.a. 86.625235 102.73012 10.328508 2025-Apr-28 19:30 00 28 35.74 +12 16 50.2 73.207916 2.296745 n.a. n.a. 1.006303819793 -0.3575891 0.00075561102497 0.1317945 28.1635 /L 151.8161 41.9/ 1.8703 n.a. n.a. 84.831103 103.03997 9.6496687 2025-Apr-28 19:40 00 29 31.51 +12 13 38.3 71.929715 4.115732 n.a. n.a. 1.006302418554 -0.3418263 0.00075611396073 0.1200442 27.9517 /L 152.0280 41.8/ 1.8981 n.a. n.a. 83.069963 103.36780 8.9809474 2025-Apr-28 19:50 00 30 26.04 +12 10 25.8 70.626990 5.926231 n.a. n.a. 1.006301080425 -0.3261028 0.00075657098845 0.1088884 27.7451 /L 152.2348 41.8/ 1.9259 n.a. n.a. 81.343580 103.71399 8.3236512 2025-Apr-28 20:00 A 00 31 19.35 +12 07 12.3 69.297101 7.726974 n.a. n.a. 1.006299805253 -0.3104165 0.00075698448544 0.0983237 27.5436 /L 152.4364 41.7/ 1.9536 n.a. n.a. 79.653764 104.07881 7.6791415 2025-Apr-28 20:10 A 00 32 11.46 +12 03 57.9 67.937310 9.516604 n.a. n.a. 1.006298592895 -0.2947653 0.00075735681266 0.0883453 27.3471 /L 152.6330 41.7/ 1.9813 n.a. n.a. 78.002365 104.46250 7.0488302 2025-Apr-28 20:20 N 00 33 02.38 +12 00 42.5 66.544772 11.293664 n.a. n.a. 1.006297443213 -0.2791472 0.00075769031083 0.0789478 27.1555 /L 152.8247 41.6/ 2.0089 n.a. n.a. 76.391260 104.86518 6.4341745 2025-Apr-28 20:30 N 00 33 52.16 +11 57 25.7 65.116524 13.056593 n.a. n.a. 1.006296356079 -0.2635603 0.00075798729629 0.0701245 26.9687 /L 153.0116 41.5/ 2.0365 n.a. n.a. 74.822350 105.28687 5.8366696 2025-Apr-28 20:40 N 00 34 40.81 +11 54 07.6 63.649480 14.803709 n.a. n.a. 1.006295331372 -0.2480025 0.00075825005699 0.0618680 26.7867 /L 153.1937 41.5/ 2.0639 n.a. n.a. 73.297544 105.72747 5.2578395 2025-Apr-28 20:50 C 00 35 28.35 +11 50 48.1 62.140427 16.533203 n.a. n.a. 1.006294368981 -0.2324720 0.00075848084832 0.0541694 26.6094 /L 153.3712 41.5/ 2.0913 n.a. n.a. 71.818753 106.18673 4.6992260 2025-Apr-28 21:00 C 00 36 14.83 +11 47 27.0 60.586017 18.243126 n.a. n.a. 1.006293468799 -0.2169668 0.00075868188902 0.0470193 26.4365 /L 153.5441 41.4/ 2.1185 n.a. n.a. 70.387876 106.66425 4.1623750 2025-Apr-28 21:10 C 00 37 00.26 +11 44 04.2 58.982772 19.931374 n.a. n.a. 1.006292630729 -0.2014849 0.00075885535708 0.0404069 26.2682 /L 153.7126 41.4/ 2.1456 n.a. n.a. 69.006787 107.15947 3.6488210 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-30 19:20 00 33 04.68 +11 54 51.4 74.455872 1.201299 n.a. n.a. 1.006808735251 -0.3149774 0.00076353770865 0.0685672 28.9847 /L 150.9942 70.0/ 13.3094 n.a. n.a. 84.635758 102.89062 5.0126140 2025-Apr-30 19:30 00 34 00.30 +11 51 42.2 73.189025 3.031943 n.a. n.a. 1.006807503610 -0.2996386 0.00076378771975 0.0567071 28.7760 /L 151.2029 69.9/ 13.3833 n.a. n.a. 82.932224 103.20632 4.2318714 2025-Apr-30 19:40 00 34 54.71 +11 48 32.3 71.899730 4.854956 n.a. n.a. 1.006806333418 -0.2843278 0.00076399134950 0.0454351 28.5724 /L 151.4066 69.9/ 13.4570 n.a. n.a. 81.259379 103.53995 3.4609600 2025-Apr-30 19:50 00 35 47.93 +11 45 21.5 70.585375 6.669133 n.a. n.a. 1.006805224569 -0.2690429 0.00076415095087 0.0347483 28.3738 /L 151.6054 69.8/ 13.5304 n.a. n.a. 79.619091 103.89182 2.7013329 2025-Apr-30 20:00 A 00 36 39.99 +11 42 09.8 69.243257 8.473187 n.a. n.a. 1.006804176962 -0.2537822 0.00076426886302 0.0246428 28.1800 /L 151.7993 69.8/ 13.6036 n.a. n.a. 78.013267 104.26218 1.9545108 2025-Apr-30 20:10 A 00 37 30.91 +11 38 57.0 67.870569 10.265739 n.a. n.a. 1.006803190505 -0.2385438 0.00076434740736 0.0151135 27.9911 /L 151.9884 69.8/ 13.6765 n.a. n.a. 76.443849 104.65118 1.2220783 2025-Apr-30 20:20 A 00 38 20.70 +11 35 42.9 66.464392 12.045310 n.a. n.a. 1.006802265112 -0.2233257 0.00076438888351 0.0061547 27.8068 /L 152.1728 69.7/ 13.7491 n.a. n.a. 74.912804 105.05889 0.5056785 2025-Apr-30 20:30 N 00 39 09.40 +11 32 27.5 65.021687 13.810310 n.a. n.a. 1.006801400705 -0.2081263 0.00076439556528 -0.0022408 27.6272 /L 152.3525 69.7/ 13.8213 n.a. n.a. 73.422113 105.48527 -0.192994 2025-Apr-30 20:40 N 00 39 57.02 +11 29 10.7 63.539284 15.559028 n.a. n.a. 1.006800597214 -0.1929436 0.00076436969647 -0.0100808 27.4522 /L 152.5276 69.7/ 13.8931 n.a. n.a. 71.973763 105.93013 -0.872204 2025-Apr-30 20:50 N 00 40 43.60 +11 25 52.3 62.013883 17.289620 n.a. n.a. 1.006799854575 -0.1777758 0.00076431348686 -0.0173744 27.2816 /L 152.6983 69.7/ 13.9646 n.a. n.a. 70.569739 106.39315 -1.530182 2025-Apr-30 21:00 C 00 41 29.15 +11 22 32.2 60.442043 19.000098 n.a. n.a. 1.006799172732 -0.1626212 0.00076422910796 -0.0241316 27.1154 /L 152.8647 69.6/ 14.0355 n.a. n.a. 69.212007 106.87385 -2.165147 2025-Apr-30 21:10 C 00 42 13.72 +11 19 10.4 58.820190 20.688315 n.a. n.a. 1.006798551638 -0.1474779 0.00076411868897 -0.0303634 26.9535 /L 153.0267 69.6/ 14.1060 n.a. n.a. 67.902506 107.37157 -2.775312 >..... 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 ***************************************************************************************************************************************************************************************************************************************************