API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Jun 07, 2026 1985-110B Spacecraft / (Earth) -116292 SL-8 R/B: Discarded rocket body from COSMOS 1704 launch Launched 1985-Nov-28, Plesetsk Missile and Space Complex, USSR/CIS Period: ~104.6 minutes ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sun Jun 7 21:51:25 2026 Pasadena, USA / Horizons ******************************************************************************* Target body name: COSMOS 1704 RB (spacecraft) (-116292) {source: 1985-110B} Center body name: Earth (399) {source: DE441} Center-site name: VdS Remote Observatory, Hakos ******************************************************************************* Start time : A.D. 2025-Aug-07 00:00:00.0000 UT Stop time : A.D. 2025-Aug-21 00:00:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 16.3613, -23.2365766, 1.8515 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 16.3613,5865.52307,-2501.54567 {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.260605.p260901 EOP coverage : DATA-BASED 1962-JAN-20 TO 2026-JUN-05. PREDICTS-> 2026-AUG-31 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-Aug-07 20:10 r 01 06 44.08 -29 03 41.9 120.906237 1.718896 n.a. n.a. 1.014030141760 2.1576689 0.00002331030480 -1.2295267 124.6179 /L 55.3805 67.2/ 97.4373 n.a. n.a. 25164.023 330.51748 -9.835491 >..... Elevation Cut-off Requested .....< 2025-Aug-07 21:50 t 07 48 37.62 -69 40 09.7 178.818923 2.999250 n.a. n.a. 1.014013215377 3.9318984 0.00002256516984 -6.2209245 87.1439 /L 92.8537 85.7/ 97.5704 n.a. n.a. 13829.170 201.73633 -58.76913 2025-Aug-07 22:00 e 21 59 53.42 +18 18 23.5 34.870973 40.564268 n.a. n.a. 1.014021104667 -0.1391017 0.00000918675240 4.1572823 143.4046 /L 36.5965 51.4/ 97.5836 n.a. n.a. 54235.096 357.32872 34.616629 >..... Elevation Cut-off Requested .....< 2025-Aug-07 23:40 r 15 39 45.99 -30 16 26.9 240.842324 9.273473 n.a. n.a. 1.014008252777 1.8462790 0.00001860256956 -2.4952098 104.1118 /T 75.8866 58.5/ 97.7218 n.a. n.a. 30993.426 35.054839 -19.69913 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-08 20:40 e 00 04 56.00 +08 23 08.2 77.163765 7.853387 n.a. n.a. 1.013873694126 -0.0854057 0.00001922189000 2.5626934 131.3014 /L 48.6984 54.6/ 99.7001 n.a. n.a. 29355.509 349.86575 20.592414 >..... Elevation Cut-off Requested .....< 2025-Aug-08 22:20 r 16 58 27.65 -67 44 51.0 201.789109 34.795300 n.a. n.a. 1.013860568728 1.8878783 0.00001020636861 -4.9507295 114.4306 /T 65.5676 60.1/ 99.7461 n.a. n.a. 43808.715 38.614534 -42.48986 2025-Aug-08 22:30 e 20 04 38.39 +61 38 25.0 355.136585 4.647985 n.a. n.a. 1.013859564936 -2.3951661 0.00002097170454 6.2861352 101.1538 /T 78.8463 82.7/ 99.7506 n.a. n.a. 14942.910 6.6294866 58.927198 >..... Elevation Cut-off Requested .....< 2025-Aug-09 00:10 r 16 48 58.92 +12 10 05.9 283.468945 0.575664 n.a. n.a. 1.013850728740 -0.4116165 0.00002391479485 2.1286994 108.4403 /T 71.5589 69.9/ 99.7952 n.a. n.a. 24468.233 15.564234 16.752158 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-09 21:00 r 00 53 28.61 -43 11 47.3 129.356509 20.056182 n.a. n.a. 1.013710538912 1.9268889 0.00001390879109 -2.8108997 126.8700 /L 53.1285 47.8/ 99.5459 n.a. n.a. 39815.778 330.48989 -22.77576 2025-Aug-09 21:10 e 23 29 50.39 +49 11 04.2 34.481414 -0.141069 n.a. n.a. 1.013709745848 -2.3324215 0.00002427924869 5.5913318 108.9068 /L 71.0932 68.1/ 99.5398 n.a. n.a. 16241.183 7.6269687 49.552556 >..... Elevation Cut-off Requested .....< 2025-Aug-09 22:40 r 12 12 55.67 -60 48 04.5 201.365372 2.830058 n.a. n.a. 1.013693646597 3.7083088 0.00002263106320 -5.8598164 83.9937 /T 96.0040 99.2/ 99.4870 n.a. n.a. 16326.741 96.840418 -52.68653 2025-Aug-09 22:50 e 17 50 24.69 +22 56 02.9 310.194112 23.205824 n.a. n.a. 1.013700623161 -0.3574572 0.00001275922489 3.7683028 116.0872 /T 63.9130 70.4/ 99.4812 n.a. n.a. 40927.761 14.058154 30.838922 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-10 19:40 r 00 44 31.61 -22 59 18.4 115.045814 -0.112152 n.a. n.a. 1.013558225141 1.9631431 0.00002457577265 -0.5380728 131.8159 /L 48.1826 32.7/ 97.0397 n.a. n.a. 24175.400 334.28191 -4.283104 >..... Elevation Cut-off Requested .....< 2025-Aug-10 21:20 t 06 26 56.19 -71 12 36.4 173.853922 5.416485 n.a. n.a. 1.013541107752 3.7262993 0.00002093296840 -6.0575331 91.5642 /L 88.4335 89.4/ 96.8357 n.a. n.a. 15868.100 227.27808 -56.46183 2025-Aug-10 21:30 e 22 24 07.53 +25 41 23.1 39.070044 28.761848 n.a. n.a. 1.013548231770 -0.3043343 0.00001129321516 4.6317242 136.2478 /L 43.7531 35.1/ 96.8168 n.a. n.a. 41521.748 355.87367 39.254092 >..... Elevation Cut-off Requested .....< 2025-Aug-10 23:10 r 15 47 09.83 -27 33 07.6 245.443289 13.573399 n.a. n.a. 1.013535149464 1.6539314 0.00001642446423 -2.1427106 102.3665 /T 77.6321 98.5/ 96.6390 n.a. n.a. 35635.888 31.349647 -16.84953 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-11 20:00 r 02 47 35.00 -52 38 01.8 150.185131 -0.530307 n.a. n.a. 1.013386289794 3.7401384 0.00002501763785 -3.9926716 107.7337 /L 72.2639 64.2/ 91.9524 n.a. n.a. 19715.350 297.64963 -33.80779 2025-Aug-11 20:10 e 23 56 33.43 +12 50 35.4 74.133109 3.771599 n.a. n.a. 1.013393550183 -0.2523955 0.00002165972268 2.9190051 133.3980 /L 46.6019 16.9/ 91.9140 n.a. n.a. 25532.512 351.90832 23.589004 >..... Elevation Cut-off Requested .....< 2025-Aug-11 21:50 r 19 01 28.59 -64 49 34.5 191.352978 46.732264 n.a. n.a. 1.013380208046 1.6897176 0.00000847004390 -4.3447188 124.5552 /T 55.4432 78.6/ 91.5612 n.a. n.a. 57590.816 16.157700 -36.38461 2025-Aug-11 22:00 t 20 39 10.60 +64 41 29.0 1.244547 1.951816 n.a. n.a. 1.013378556452 -2.5103582 0.00002272532365 6.3603273 99.7169 /T 80.2831 74.2/ 91.5287 n.a. n.a. 13357.732 7.9417344 60.019202 >..... Elevation Cut-off Requested .....< 2025-Aug-11 23:40 r 16 47 33.19 +17 58 34.9 290.433351 1.848654 n.a. n.a. 1.013369420203 -0.5723952 0.00002294419727 2.7098245 103.7759 /T 76.2234 102.1/ 91.2262 n.a. n.a. 24741.803 13.605948 21.552205 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-12 20:30 r 00 31 05.91 -31 56 57.2 117.649652 17.892463 n.a. n.a. 1.013222903247 1.7227188 0.00001462659364 -1.6388235 135.3759 /L 44.6227 36.0/ 84.5032 n.a. n.a. 40007.755 335.63096 -13.04256 >..... Elevation Cut-off Requested .....< 2025-Aug-12 22:10 r 12 06 33.95 -64 20 44.2 199.818762 6.297870 n.a. n.a. 1.013205845202 3.4831047 0.00002034508526 -5.9558593 84.5721 /T 95.4256 120.1/ 83.9959 n.a. n.a. 17560.939 98.743654 -54.05446 2025-Aug-12 22:20 e 18 14 25.74 +32 55 10.9 324.996839 22.569262 n.a. n.a. 1.013212022122 -0.5195292 0.00001290294193 4.7553627 113.2650 /T 66.7353 89.6/ 83.9495 n.a. n.a. 35917.354 12.320926 40.329433 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-13 20:50 t 04 49 23.40 -70 32 20.2 167.723448 7.685962 n.a. n.a. 1.013045807191 3.4912793 0.00001951746275 -5.7715431 97.5391 /L 82.4586 89.0/ 75.1778 n.a. n.a. 18674.347 256.12121 -52.64326 2025-Aug-13 21:00 e 22 39 47.56 +30 30 31.2 41.536498 20.161831 n.a. n.a. 1.013052108115 -0.4679238 0.00001366372388 4.8584964 132.2539 /L 47.7468 40.6/ 75.1082 n.a. n.a. 33172.266 355.87706 41.565583 >..... Elevation Cut-off Requested .....< 2025-Aug-13 22:40 r 15 58 15.11 -23 42 36.9 251.424625 18.609086 n.a. n.a. 1.013038776293 1.4481223 0.00001433235486 -1.6261712 101.2379 /T 78.7609 139.6/ 74.4691 n.a. n.a. 41568.937 27.546777 -12.72422 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-14 19:30 r 02 04 31.83 -47 52 45.9 144.000192 -0.456432 n.a. n.a. 1.012883073829 3.4951170 0.00002489889169 -3.3759417 115.9423 /L 64.0554 64.2/ 65.3527 n.a. n.a. 21034.678 307.35224 -28.06742 2025-Aug-14 19:40 e 23 48 07.21 +16 28 38.1 71.817493 0.101202 n.a. n.a. 1.012889486910 -0.4177129 0.00002417682889 3.1771121 135.4086 /L 44.5913 32.2/ 65.2600 n.a. n.a. 22503.066 354.08587 25.785731 >..... Elevation Cut-off Requested .....< 2025-Aug-14 21:20 t 20 44 39.55 -52 26 49.1 165.819068 59.529951 n.a. n.a. 1.012875863147 1.4780892 0.00000735565999 -3.0819174 140.3216 /T 39.6768 97.7/ 64.3903 n.a. n.a. 74675.366 359.78868 -24.89875 >..... Elevation Cut-off Requested .....< 2025-Aug-14 23:00 r 14 02 50.76 -43 19 48.6 221.590400 0.081582 n.a. n.a. 1.012858821834 3.2276211 0.00002447473547 -4.0832889 83.3647 /T 96.6332 154.0/ 63.6384 n.a. n.a. 21020.818 56.220820 -33.29036 2025-Aug-14 23:10 e 16 47 15.27 +24 18 14.1 297.955848 2.811838 n.a. n.a. 1.012864038040 -0.7289469 0.00002222762161 3.3260964 99.4171 /T 80.5823 123.4/ 63.5700 n.a. n.a. 24475.891 11.710894 26.832184 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-15 20:00 r 00 12 53.88 -21 53 40.7 107.699212 14.737975 n.a. n.a. 1.012709999157 1.5051864 0.00001583574470 -0.5531293 143.0585 /L 36.9404 59.5/ 53.8687 n.a. n.a. 37831.530 339.19152 -4.366410 >..... Elevation Cut-off Requested .....< 2025-Aug-15 21:40 r 12 02 03.05 -68 44 06.4 197.435466 10.238693 n.a. n.a. 1.012692692992 3.2304813 0.00001808361933 -6.0259477 86.3133 /T 93.6846 125.9/ 52.9187 n.a. n.a. 19226.336 101.73861 -55.10778 2025-Aug-15 21:50 e 18 43 40.10 +41 48 43.3 338.657347 20.194436 n.a. n.a. 1.012698022530 -0.6772237 0.00001361942420 5.4945551 110.9441 /T 69.0564 98.4/ 52.8302 n.a. n.a. 29615.040 10.505964 48.418158 >..... Elevation Cut-off Requested .....< 2025-Aug-15 23:30 r 15 56 01.20 -08 57 39.7 260.074612 -0.193973 n.a. n.a. 1.012684622529 1.2042540 0.00002450704224 -0.0469225 95.6374 /T 84.3612 162.2/ 52.0189 n.a. n.a. 25088.739 25.319001 -0.360567 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-16 20:20 t 03 17 43.64 -66 54 15.0 160.348463 9.628135 n.a. n.a. 1.012523349926 3.2291611 0.00001839003287 -5.3277782 105.1022 /L 74.8956 92.8/ 42.3219 n.a. n.a. 22157.117 282.23425 -47.24671 2025-Aug-16 20:30 e 22 49 31.68 +33 48 21.0 43.208791 13.582848 n.a. n.a. 1.012528781638 -0.6267278 0.00001618476729 4.9629672 130.1743 /L 49.8263 66.2/ 42.2199 n.a. n.a. 27549.937 356.92098 42.638969 >..... Elevation Cut-off Requested .....< 2025-Aug-16 22:10 r 16 14 05.37 -18 13 16.7 259.655211 24.503595 n.a. n.a. 1.012515050226 1.2319345 0.00001240570966 -0.8726752 100.9680 /T 79.0311 171.9/ 41.2586 n.a. n.a. 48831.147 23.716381 -6.795673 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-17 20:50 t 21 41 07.96 -33 14 58.9 117.171913 61.620502 n.a. n.a. 1.012341985418 1.2568805 0.00000720045499 -1.1432822 159.9245 /T 20.0740 120.8/ 31.1582 n.a. n.a. 83034.240 353.38230 -8.988273 >..... Elevation Cut-off Requested .....< 2025-Aug-17 22:30 r 14 04 48.94 -43 30 12.2 223.337323 3.308914 n.a. n.a. 1.012324585798 2.9605343 0.00002213610275 -4.0740378 81.2601 /T 98.7380 140.5/ 30.2354 n.a. n.a. 23206.316 52.777311 -33.27081 2025-Aug-17 22:40 e 16 48 21.99 +31 01 14.2 305.905929 3.375612 n.a. n.a. 1.012328944062 -0.8773190 0.00002180529990 3.9479589 95.5464 /T 84.4531 120.5/ 30.1492 n.a. n.a. 23575.762 9.8520931 32.431977 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-18 19:30 r 23 57 13.18 -13 19 54.1 99.694510 11.150887 n.a. n.a. 1.012165193722 1.2791804 0.00001744040366 0.3682930 149.5277 /L 30.4715 96.9/ 22.0657 n.a. n.a. 34421.483 341.95471 2.9064823 >..... Elevation Cut-off Requested .....< 2025-Aug-18 21:10 r 12 02 12.54 -74 18 03.9 193.826391 14.779584 n.a. n.a. 1.012147483281 2.9548855 0.00001589046481 -6.0466385 89.5813 /T 90.4166 117.1/ 21.1702 n.a. n.a. 21639.788 105.62720 -55.49555 2025-Aug-18 21:20 e 19 17 06.11 +48 50 10.3 350.170524 16.740029 n.a. n.a. 1.012151937221 -0.8256783 0.00001483527792 5.9581770 109.3779 /T 70.6226 101.0/ 21.0839 n.a. n.a. 23946.549 8.6197041 54.219897 >..... Elevation Cut-off Requested .....< 2025-Aug-18 23:00 r 15 54 57.99 -04 44 31.2 265.635807 2.046524 n.a. n.a. 1.012138000990 0.9874856 0.00002283489616 0.3982021 91.6435 /T 88.3552 139.7/ 20.2681 n.a. n.a. 26843.009 22.845067 3.0777674 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-19 19:50 t 02 07 05.62 -60 37 50.2 151.819900 11.003068 n.a. n.a. 1.011966443767 2.9453871 0.00001762781928 -4.7024406 114.1255 /L 65.8724 106.2/ 13.4885 n.a. n.a. 25906.719 301.68299 -40.42546 2025-Aug-19 20:00 e 22 55 08.79 +36 10 49.0 44.443803 8.292920 n.a. n.a. 1.011970983455 -0.7749963 0.00001879251758 5.0022773 129.2421 /L 50.7584 96.3/ 13.4139 n.a. n.a. 23596.338 358.64804 43.022125 >..... Elevation Cut-off Requested .....< 2025-Aug-19 21:40 r 16 35 50.93 -10 25 55.6 271.580773 31.081698 n.a. n.a. 1.011956667157 1.0113679 0.00001077175871 0.2001911 101.8463 /T 78.1531 140.3/ 12.6872 n.a. n.a. 56555.359 19.994954 1.5585264 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Aug-20 20:20 r 22 09 22.25 -14 27 29.4 84.965176 49.478776 n.a. n.a. 1.011771225420 1.0329107 0.00000808895125 0.7922576 176.7582 /L 3.2407 148.7/ 6.7823 n.a. n.a. 74371.423 351.14546 6.2188865 >..... Elevation Cut-off Requested .....< 2025-Aug-20 22:00 r 14 09 27.61 -43 32 57.6 225.218561 7.004558 n.a. n.a. 1.011753325747 2.6759959 0.00001976491217 -4.0275421 79.5204 /T 100.4778 106.6/ 6.2573 n.a. n.a. 26054.441 49.051018 -32.90555 2025-Aug-20 22:10 e 16 51 15.98 +37 55 36.7 314.075696 3.473293 n.a. n.a. 1.011756820548 -1.0109915 0.00002170690988 4.5397013 92.3597 /T 87.6399 102.4/ 6.2069 n.a. n.a. 22056.557 7.9915423 38.113951 >..... Elevation 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 Inquiries : contact-ssd@jpl.nasa.gov ***************************************************************************************************************************************************************************************************************************************************