API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Mar 05, 2024 Clementine Extended Spacecraft -40000 https://science.nasa.gov/mission/clementine/ BACKGROUND Deep Space Program Science Experiment (DSPSE), better known as Clementine, was launched 1994-Jan-25 @ 16:34 UTC from Vandenberg Air Force Base (SLC-4W), California on a Titan 2G launch vehicle. After launch, the spacecraft remained in a temporary parking orbit around the Earth until Feb. 3, 1994, at which time a solid-propellant rocket sent the vehicle to the Moon. After two Earth flybys, Feb. 5 and Feb. 15, Clementine successfully entered an elliptical polar orbit (about 430 x 2950 kilometers) around the Moon on Feb. 19, 1994, with a period of five days. The BMDO assigned responsibility for spacecraft design, manufacture, integration, and mission execution to the Naval Research Laboratory (NRL). The Lawrence Livermore National Laboratory (LLNL) provided lightweight imaging sensors developed under the sponsorship of BMDO. MISSION Its purpose was to map the Moon and test lightweight sensors and spacecraft components by exposing them to the environment of outer space. Between February 26 and April 22, 1994, Clementine returned more than 1.8 million digital images of the Moon. Review of Clementine data indicated the possible existence of ice within some of the moon's craters (South Pole). This discovery was confirmed in early 1998 by NASA's Lunar Prospector. It departed Lunar orbit 1994-May-03 to rendevous with near-Earth asteroid 1620 Geographos, but an 11-minute thruster malfunction on May 7, 1994 caused spin-up to 80 rpm while depleting the fuel supply. The mission was terminated 1994-Aug-8, the spacecraft left in heliocentric space. The next year, when antenna geometry was expected to be more favorable, a search succesfully re-established contact with the spacecraft. It was tracked for about a month while thruster tests were conducted. LATER TRAJECTORY ANALYSIS OD performed in 2024 (M. Ryne, JPL) fit the 1995 post-recovery data, spanning about one month with a very sparse S-band Doppler tracking data set (cs0205, 401 F1 Doppler, 292 F2 Doppler, spanning 1995-Apr-10 to 1995-May-11). The dynamic model used a solar pressure bus model and two small impulsive burns in the fit. The runout trajectory initializes with a state taken a few days after the last of tracking data in the cs0205 solution. The propagation used a spherical solar pressure model with an average diffuse reflectivity coefficient. The original fit used a DE200 planetary ephemeris and the runout uses DE421. No effort was made to correct this mismatch. Earth approaches potentially within 4.2E6 km (11 LD) in 2040-Oct and 3.9E6 km (10 LD) in 2058-Jul are indicated. TRAJECTORY This trajectory is the 2024 post-recovery fit and extension: Trajectory name Start (TDB) Stop (TDB) ------------------------------------ ----------------- ----------------- clem_19950515_21250515_cs0502_runout 1995-May-15 00:00 2125-May-15 12:00 Also online (SCID -40) is a corrected version of NRL release for the 1994 lunar orbit insertion and mapping phases covering 1994-Feb-19 to 19940-May-30. Other segments off-line: LEO & PHASING LOOP A: 1994-Jan-26 00:01 to 1994-Feb-02 13:01 DEPARTURE & PHASING LOOP B: 1994-May-04 03:31 to 1994-May-06 13:31 See the above web page for details on the Clementine mission. ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Mon Sep 14 14:10:56 2026 Pasadena, USA / Horizons ******************************************************************************* Target body name: Clementine Extended (spacecraft) (-40000) {source: clem_19950515_21250515_c} Center body name: Earth (399) {source: DE441} Center-site name: SATINO Remote Observatory, Haute Provence ******************************************************************************* Start time : A.D. 2026-Sep-02 00:00:00.0000 UT Stop time : A.D. 2026-Sep-05 00:00:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 5.7124, 43.9320269, .703985 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 5.7124, 4601.22659, 4403.14405 {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.260911.p261208 EOP coverage : DATA-BASED 1962-JAN-20 TO 2026-SEP-11. PREDICTS-> 2026-DEC-07 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 .....< 2026-Sep-02 18:20 C 17 09 05.62 -23 35 51.6 184.895433 22.283422 n.a. n.a. 1.027122375161 -0.1355772 0.09504362502740 0.4003480 98.4287 /T 76.3193 151.1/ 67.4324 n.a. n.a. 2.2895340 94.330122 8.6548763 2026-Sep-02 18:30 C 17 09 07.28 -23 35 53.3 187.360067 22.090758 n.a. n.a. 1.027121831534 -0.1355079 0.09504525776141 0.4137414 98.4283 /T 76.3196 151.2/ 67.3385 n.a. n.a. 2.2906002 94.197809 8.9355455 2026-Sep-02 18:40 C 17 09 08.95 -23 35 55.0 189.812291 21.821499 n.a. n.a. 1.027121288185 -0.1354387 0.09504694407478 0.4270591 98.4279 /T 76.3199 151.3/ 67.2450 n.a. n.a. 2.2922292 94.065363 9.2116792 2026-Sep-02 18:50 N 17 09 10.61 -23 35 56.7 192.248233 21.476583 n.a. n.a. 1.027120745113 -0.1353694 0.09504868361337 0.4402760 98.4275 /T 76.3202 151.4/ 67.1519 n.a. n.a. 2.2944179 93.933126 9.4825703 2026-Sep-02 19:00 N 17 09 12.28 -23 35 58.3 194.664254 21.057192 n.a. n.a. 1.027120202320 -0.1353002 0.09505047592242 0.4533669 98.4272 /T 76.3204 151.5/ 67.0594 n.a. n.a. 2.2971621 93.801439 9.7475370 2026-Sep-02 19:10 N 17 09 13.94 -23 35 59.9 197.056993 20.564731 n.a. n.a. 1.027119659804 -0.1352309 0.09505232044748 0.4663074 98.4268 /T 76.3207 151.6/ 66.9673 n.a. n.a. 2.3004567 93.670638 10.005925 2026-Sep-02 19:20 A 17 09 15.62 -23 36 01.4 199.423399 20.000808 n.a. n.a. 1.027119117566 -0.1351617 0.09505421653557 0.4790728 98.4264 /T 76.3209 151.7/ 66.8759 n.a. n.a. 2.3042952 93.541054 10.257112 2026-Sep-02 19:30 A 17 09 17.29 -23 36 02.8 201.760764 19.367212 n.a. n.a. 1.027118575606 -0.1350924 0.09505616343629 0.4916392 98.4261 /T 76.3212 151.8/ 66.7850 n.a. n.a. 2.3086700 93.413011 10.500508 2026-Sep-02 19:40 A 17 09 18.97 -23 36 04.3 204.066734 18.665885 n.a. n.a. 1.027118033924 -0.1350231 0.09505816030335 0.5039827 98.4258 /T 76.3214 151.9/ 66.6948 n.a. n.a. 2.3135725 93.286825 10.735557 2026-Sep-02 19:50 A 17 09 20.65 -23 36 05.6 206.339326 17.898901 n.a. n.a. 1.027117492519 -0.1349539 0.09506020619612 0.5160801 98.4254 /T 76.3216 152.1/ 66.6052 n.a. n.a. 2.3189931 93.162803 10.961742 2026-Sep-02 20:00 17 09 22.34 -23 36 06.9 208.576923 17.068437 n.a. n.a. 1.027116951393 -0.1348846 0.09506230008148 0.5279086 98.4251 /T 76.3218 152.2/ 66.5163 n.a. n.a. 2.3249209 93.041240 11.178582 2026-Sep-02 20:10 17 09 24.03 -23 36 08.2 210.778274 16.176753 n.a. n.a. 1.027116410544 -0.1348153 0.09506444083573 0.5394458 98.4248 /T 76.3220 152.3/ 66.4281 n.a. n.a. 2.3313441 92.922419 11.385638 2026-Sep-02 20:20 m 17 09 25.72 -23 36 09.5 212.942482 15.226169 n.a. n.a. 1.027115869973 -0.1347460 0.09506662724680 0.5506700 98.4245 /T 76.3222 152.4/ 66.3407 n.a. n.a. 2.3382501 92.806611 11.582509 2026-Sep-02 20:30 m 17 09 27.43 -23 36 10.6 215.068983 14.219037 n.a. n.a. 1.027115329680 -0.1346768 0.09506885801654 0.5615601 98.4242 /T 76.3223 152.5/ 66.2540 n.a. n.a. 2.3456249 92.694073 11.768834 2026-Sep-02 20:40 m 17 09 29.13 -23 36 11.8 217.157532 13.157733 n.a. n.a. 1.027114789665 -0.1346075 0.09507113176318 0.5720954 98.4240 /T 76.3224 152.6/ 66.1682 n.a. n.a. 2.3534540 92.585047 11.944292 2026-Sep-02 20:50 m 17 09 30.85 -23 36 12.9 219.208178 12.044628 n.a. n.a. 1.027114249927 -0.1345382 0.09507344702398 0.5822562 98.4238 /T 76.3225 152.7/ 66.0831 n.a. n.a. 2.3617218 92.479760 12.108605 2026-Sep-02 21:00 m 17 09 32.57 -23 36 14.0 221.221241 10.882082 n.a. n.a. 1.027113710468 -0.1344689 0.09507580225799 0.5920234 98.4235 /T 76.3226 152.8/ 65.9989 n.a. n.a. 2.3704118 92.378422 12.261531 2026-Sep-02 21:10 m 17 09 34.29 -23 36 15.0 223.197287 9.672424 n.a. n.a. 1.027113171286 -0.1343996 0.09507819584911 0.6013785 98.4234 /T 76.3226 152.9/ 65.9155 n.a. n.a. 2.3795068 92.281229 12.402868 2026-Sep-02 21:20 m 17 09 36.03 -23 36 16.0 225.137104 8.417946 n.a. n.a. 1.027112632383 -0.1343303 0.09508062610899 0.6103040 98.4232 /T 76.3227 153.0/ 65.8330 n.a. n.a. 2.3889887 92.188359 12.532454 2026-Sep-02 21:30 m 17 09 37.77 -23 36 17.0 227.041677 7.120894 n.a. n.a. 1.027112093757 -0.1342611 0.09508309128038 0.6187831 98.4231 /T 76.3227 153.1/ 65.7515 n.a. n.a. 2.3988387 92.099974 12.650161 2026-Sep-02 21:40 m 17 09 39.51 -23 36 17.9 228.912170 5.783454 n.a. n.a. 1.027111555409 -0.1341918 0.09508558954046 0.6267998 98.4229 /T 76.3226 153.2/ 65.6708 n.a. n.a. 2.4090375 92.016219 12.755898 2026-Sep-02 21:50 m 17 09 41.27 -23 36 18.8 230.749901 4.407758 n.a. n.a. 1.027111017339 -0.1341225 0.09508811900426 0.6343392 98.4228 /T 76.3226 153.3/ 65.5910 n.a. n.a. 2.4195648 91.937222 12.849607 2026-Sep-02 22:00 m 17 09 43.03 -23 36 19.7 232.556326 2.995870 n.a. n.a. 1.027110479548 -0.1340532 0.09509067772834 0.6413871 98.4228 /T 76.3225 153.3/ 65.5122 n.a. n.a. 2.4304000 91.863096 12.931264 2026-Sep-02 22:10 m 17 09 44.80 -23 36 20.5 234.333024 1.549789 n.a. n.a. 1.027109942034 -0.1339839 0.09509326371439 0.6479302 98.4228 /T 76.3224 153.4/ 65.4343 n.a. n.a. 2.4415217 91.793936 13.000876 2026-Sep-02 22:20 m 17 09 46.58 -23 36 21.3 236.081681 0.071447 n.a. n.a. 1.027109404798 -0.1339146 0.09509587491318 0.6539565 98.4228 /T 76.3223 153.5/ 65.3574 n.a. n.a. 2.4529082 91.729823 13.058477 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-03 18:20 C 17 13 35.79 -23 40 11.5 184.751633 22.222756 n.a. n.a. 1.027046956755 -0.1255834 0.09526394897195 0.4147614 98.4942 /T 76.2421 163.8/ 56.4819 n.a. n.a. 2.2998569 93.838044 8.9016016 2026-Sep-03 18:30 C 17 13 37.46 -23 40 13.1 187.214303 22.034672 n.a. n.a. 1.027046453211 -0.1255138 0.09526563952216 0.4281562 98.4938 /T 76.2424 163.9/ 56.3788 n.a. n.a. 2.3009350 93.706479 9.1798414 2026-Sep-03 18:40 N 17 13 39.13 -23 40 14.6 189.664829 21.770025 n.a. n.a. 1.027045949946 -0.1254443 0.09526738366053 0.4414768 98.4935 /T 76.2426 164.0/ 56.2760 n.a. n.a. 2.3025746 93.574889 9.4535443 2026-Sep-03 18:50 N 17 13 40.81 -23 40 16.1 192.099338 21.429738 n.a. n.a. 1.027045446961 -0.1253747 0.09526918103877 0.4546981 98.4931 /T 76.2429 164.1/ 56.1736 n.a. n.a. 2.3047727 93.443613 9.7220120 2026-Sep-03 19:00 N 17 13 42.48 -23 40 17.5 194.514188 21.014974 n.a. n.a. 1.027044944254 -0.1253052 0.09527103120810 0.4677949 98.4928 /T 76.2431 164.2/ 56.0715 n.a. n.a. 2.3075252 93.312988 9.9845713 2026-Sep-03 19:10 N 17 13 44.16 -23 40 18.9 196.906010 20.527124 n.a. n.a. 1.027044441826 -0.1252356 0.09527293362006 0.4807427 98.4924 /T 76.2434 164.4/ 55.9699 n.a. n.a. 2.3108267 93.183347 10.240577 2026-Sep-03 19:20 A 17 13 45.84 -23 40 20.2 199.271744 19.967779 n.a. n.a. 1.027043939677 -0.1251661 0.09527488762751 0.4935170 98.4921 /T 76.2436 164.5/ 55.8688 n.a. n.a. 2.3146707 93.055016 10.489413 2026-Sep-03 19:30 A 17 13 47.53 -23 40 21.5 201.608666 19.338712 n.a. n.a. 1.027043437808 -0.1250965 0.09527689248603 0.5060937 98.4918 /T 76.2438 164.6/ 55.7682 n.a. n.a. 2.3190497 92.928316 10.730499 2026-Sep-03 19:40 A 17 13 49.21 -23 40 22.7 203.914407 18.641854 n.a. n.a. 1.027042936217 -0.1250269 0.09527894735519 0.5184490 98.4914 /T 76.2440 164.7/ 55.6681 n.a. n.a. 2.3239550 92.803557 10.963286 2026-Sep-03 19:50 A 17 13 50.90 -23 40 23.9 206.186965 17.879264 n.a. n.a. 1.027042434905 -0.1249574 0.09528105130020 0.5305596 98.4911 /T 76.2442 164.8/ 55.5686 n.a. n.a. 2.3293770 92.681042 11.187265 2026-Sep-03 20:00 17 13 52.60 -23 40 25.0 208.424705 17.053111 n.a. n.a. 1.027041933872 -0.1248878 0.09528320329372 0.5424027 98.4908 /T 76.2443 164.9/ 55.4698 n.a. n.a. 2.3353047 92.561060 11.401961 2026-Sep-03 20:10 17 13 54.30 -23 40 26.1 210.626356 16.165644 n.a. n.a. 1.027041433119 -0.1248182 0.09528540221780 0.5539560 98.4906 /T 76.2445 165.0/ 55.3716 n.a. n.a. 2.3417265 92.443891 11.606941 2026-Sep-03 20:20 17 13 56.01 -23 40 27.1 212.790999 15.219173 n.a. n.a. 1.027040932644 -0.1247487 0.09528764686601 0.5651977 98.4903 /T 76.2446 165.1/ 55.2742 n.a. n.a. 2.3486295 92.329799 11.801809 2026-Sep-03 20:30 17 13 57.72 -23 40 28.1 214.918049 14.216046 n.a. n.a. 1.027040432449 -0.1246791 0.09528993594575 0.5761066 98.4901 /T 76.2447 165.2/ 55.1774 n.a. n.a. 2.3560000 92.219035 11.986211 2026-Sep-03 20:40 17 13 59.43 -23 40 29.1 217.007242 13.158630 n.a. n.a. 1.027039932532 -0.1246095 0.09529226808072 0.5866622 98.4898 /T 76.2448 165.3/ 55.0815 n.a. n.a. 2.3638233 92.111838 12.159831 2026-Sep-03 20:50 17 14 01.16 -23 40 30.0 219.058607 12.049294 n.a. n.a. 1.027039432895 -0.1245399 0.09529464181354 0.5968446 98.4896 /T 76.2449 165.4/ 54.9863 n.a. n.a. 2.3720839 92.008428 12.322393 2026-Sep-03 21:00 m 17 14 02.88 -23 40 30.9 221.072443 10.890394 n.a. n.a. 1.027038933537 -0.1244704 0.09529705560854 0.6066345 98.4894 /T 76.2450 165.5/ 54.8919 n.a. n.a. 2.3807652 91.909010 12.473660 2026-Sep-03 21:10 m 17 14 04.62 -23 40 31.7 223.049298 9.684256 n.a. n.a. 1.027038434457 -0.1244008 0.09529950785467 0.6160137 98.4893 /T 76.2450 165.7/ 54.7984 n.a. n.a. 2.3898501 91.813775 12.613434 2026-Sep-03 21:20 m 17 14 06.36 -23 40 32.5 224.989942 8.433171 n.a. n.a. 1.027037935657 -0.1243312 0.09530199686859 0.6249645 98.4891 /T 76.2450 165.8/ 54.7058 n.a. n.a. 2.3993205 91.722895 12.741554 2026-Sep-03 21:30 m 17 14 08.11 -23 40 33.3 226.895345 7.139382 n.a. n.a. 1.027037437136 -0.1242616 0.09530452089787 0.6334701 98.4890 /T 76.2450 165.9/ 54.6141 n.a. n.a. 2.4091578 91.636527 12.857895 2026-Sep-03 21:40 m 17 14 09.87 -23 40 34.1 228.766655 5.805079 n.a. n.a. 1.027036938894 -0.1241920 0.09530707812437 0.6415144 98.4889 /T 76.2449 165.9/ 54.5234 n.a. n.a. 2.4193424 91.554812 12.962367 2026-Sep-03 21:50 m 17 14 11.63 -23 40 34.8 230.605175 4.432390 n.a. n.a. 1.027036440931 -0.1241224 0.09530966666759 0.6490825 98.4889 /T 76.2448 166.0/ 54.4336 n.a. n.a. 2.4298544 91.477872 13.054915 2026-Sep-03 22:00 m 17 14 13.40 -23 40 35.4 232.412349 3.023382 n.a. n.a. 1.027035943248 -0.1240528 0.09531228458846 0.6561602 98.4888 /T 76.2447 166.1/ 54.3447 n.a. n.a. 2.4406730 91.405815 13.135514 2026-Sep-03 22:10 m 17 14 15.18 -23 40 36.1 234.189742 1.580055 n.a. n.a. 1.027035445843 -0.1239832 0.09531492989280 0.6627341 98.4888 /T 76.2446 166.2/ 54.2569 n.a. n.a. 2.4517769 91.338733 13.204171 2026-Sep-03 22:20 m 17 14 16.97 -23 40 36.7 235.939027 0.104342 n.a. n.a. 1.027034948718 -0.1239136 0.09531760053530 0.6687921 98.4888 /T 76.2444 166.3/ 54.1700 n.a. n.a. 2.4631446 91.276700 13.260922 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-04 18:20 C 17 18 07.27 -23 44 03.7 184.603269 22.169862 n.a. n.a. 1.026977322381 -0.1155481 0.09549325024809 0.4298573 98.5630 /T 76.1611 175.6/ 45.0883 n.a. n.a. 2.3104413 93.343307 9.1569207 2026-Sep-04 18:30 C 17 18 08.95 -23 44 05.1 187.064263 21.986497 n.a. n.a. 1.026976859087 -0.1154782 0.09549500135249 0.4432535 98.5627 /T 76.1614 175.7/ 44.9825 n.a. n.a. 2.3115306 93.212544 9.4326694 2026-Sep-04 18:40 N 17 18 10.64 -23 44 06.4 189.513380 21.726593 n.a. n.a. 1.026976396073 -0.1154084 0.09549680605351 0.4565770 98.5624 /T 76.1616 175.7/ 44.8768 n.a. n.a. 2.3131802 93.081863 9.7038806 2026-Sep-04 18:50 N 17 18 12.32 -23 44 07.7 191.946749 21.391056 n.a. n.a. 1.026975933339 -0.1153386 0.09549866400895 0.4698026 98.5621 /T 76.1618 175.8/ 44.7713 n.a. n.a. 2.3153870 92.951598 9.9698648 2026-Sep-04 19:00 N 17 18 14.00 -23 44 08.9 194.360723 20.981032 n.a. n.a. 1.026975470885 -0.1152687 0.09550057477613 0.4829054 98.5618 /T 76.1620 175.9/ 44.6660 n.a. n.a. 2.3181468 92.822085 10.229957 2026-Sep-04 19:10 N 17 18 15.69 -23 44 10.1 196.751921 20.497895 n.a. n.a. 1.026975008712 -0.1151989 0.09550253781271 0.4958607 98.5614 /T 76.1622 176.0/ 44.5611 n.a. n.a. 2.3214543 92.693650 10.483522 2026-Sep-04 19:20 A 17 18 17.38 -23 44 11.3 199.117272 19.943220 n.a. n.a. 1.026974546818 -0.1151291 0.09550455247773 0.5086439 98.5611 /T 76.1624 176.0/ 44.4565 n.a. n.a. 2.3253028 92.566617 10.729951 2026-Sep-04 19:30 A 17 18 19.07 -23 44 12.3 201.454038 19.318767 n.a. n.a. 1.026974085205 -0.1150592 0.09550661803274 0.5212310 98.5608 /T 76.1626 176.1/ 44.3523 n.a. n.a. 2.3296850 92.441301 10.968671 2026-Sep-04 19:40 A 17 18 20.77 -23 44 13.4 203.759833 18.626452 n.a. n.a. 1.026973623872 -0.1149894 0.09550873364341 0.5335983 98.5605 /T 76.1628 176.1/ 44.2485 n.a. n.a. 2.3345919 92.318009 11.199142 2026-Sep-04 19:50 17 18 22.47 -23 44 14.4 206.032635 17.868323 n.a. n.a. 1.026973162819 -0.1149196 0.09551089838090 0.5457224 98.5603 /T 76.1629 176.2/ 44.1452 n.a. n.a. 2.3400141 92.197038 11.420860 2026-Sep-04 20:00 17 18 24.18 -23 44 15.3 208.270790 17.046538 n.a. n.a. 1.026972702046 -0.1148497 0.09551311122385 0.5575805 98.5600 /T 76.1631 176.2/ 44.0424 n.a. n.a. 2.3459405 92.078672 11.633360 2026-Sep-04 20:10 17 18 25.89 -23 44 16.2 210.473006 16.163337 n.a. n.a. 1.026972241553 -0.1147799 0.09551537106013 0.5691501 98.5597 /T 76.1632 176.3/ 43.9401 n.a. n.a. 2.3523595 91.963186 11.836213 2026-Sep-04 20:20 17 18 27.60 -23 44 17.0 212.638340 15.221022 n.a. n.a. 1.026971781340 -0.1147100 0.09551767668907 0.5804096 98.5595 /T 76.1633 176.3/ 43.8384 n.a. n.a. 2.3592582 91.850839 12.029031 2026-Sep-04 20:30 17 18 29.32 -23 44 17.8 214.766190 14.221934 n.a. n.a. 1.026971321408 -0.1146402 0.09552002682377 0.5913377 98.5593 /T 76.1634 176.4/ 43.7374 n.a. n.a. 2.3666228 91.741877 12.211462 2026-Sep-04 20:40 17 18 31.05 -23 44 18.6 216.856269 13.168436 n.a. n.a. 1.026970861755 -0.1145703 0.09552242009348 0.6019139 98.5591 /T 76.1634 176.4/ 43.6370 n.a. n.a. 2.3744388 91.636531 12.383198 2026-Sep-04 20:50 17 18 32.78 -23 44 19.3 218.908584 12.062891 n.a. n.a. 1.026970402383 -0.1145005 0.09552485504626 0.6121181 98.5589 /T 76.1635 176.4/ 43.5373 n.a. n.a. 2.3826905 91.535019 12.543965 2026-Sep-04 21:00 17 18 34.51 -23 44 20.0 220.923418 10.907653 n.a. n.a. 1.026969943291 -0.1144306 0.09552733015179 0.6219313 98.5587 /T 76.1635 176.4/ 43.4384 n.a. n.a. 2.3913616 91.437539 12.693531 2026-Sep-04 21:10 17 18 36.26 -23 44 20.7 222.901298 9.705046 n.a. n.a. 1.026969484480 -0.1143607 0.09552984380418 0.6313350 98.5586 /T 76.1635 176.5/ 43.3402 n.a. n.a. 2.4004348 91.344277 12.831701 2026-Sep-04 21:20 17 18 38.01 -23 44 21.3 224.842979 8.457361 n.a. n.a. 1.026969025948 -0.1142909 0.09553239432514 0.6403116 98.5585 /T 76.1635 176.5/ 43.2428 n.a. n.a. 2.4098922 91.255401 12.958316 2026-Sep-04 21:30 17 18 39.77 -23 44 21.9 226.749413 7.166839 n.a. n.a. 1.026968567697 -0.1142210 0.09553497996709 0.6488440 98.5584 /T 76.1634 176.5/ 43.1463 n.a. n.a. 2.4197150 91.171060 13.073254 2026-Sep-04 21:40 17 18 41.53 -23 44 22.4 228.621732 5.835670 n.a. n.a. 1.026968109726 -0.1141512 0.09553759891661 0.6569165 98.5583 /T 76.1633 176.5/ 43.0506 n.a. n.a. 2.4298839 91.091392 13.176426 2026-Sep-04 21:50 m 17 18 43.31 -23 44 22.9 230.461227 4.465984 n.a. n.a. 1.026967652035 -0.1140813 0.09554024929774 0.6645138 98.5583 /T 76.1632 176.5/ 42.9558 n.a. n.a. 2.4403788 91.016514 13.267777 2026-Sep-04 22:00 m 17 18 45.09 -23 44 23.4 232.269327 3.059848 n.a. n.a. 1.026967194624 -0.1140114 0.09554292917573 0.6716217 98.5583 /T 76.1631 176.5/ 42.8619 n.a. n.a. 2.4511791 90.946528 13.347285 2026-Sep-04 22:10 m 17 18 46.88 -23 44 23.9 234.047586 1.619265 n.a. n.a. 1.026966737494 -0.1139416 0.09554563656059 0.6782269 98.5583 /T 76.1629 176.5/ 42.7690 n.a. n.a. 2.4622636 90.881522 13.414957 2026-Sep-04 22:20 m 17 18 48.67 -23 44 24.3 235.797666 0.146170 n.a. n.a. 1.026966280643 -0.1138717 0.09554836941094 0.6843171 98.5583 /T 76.1627 176.5/ 42.6770 n.a. n.a. 2.4736107 90.821566 13.470827 >..... 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 : Jon.D.Giorgini@jpl.nasa.gov ***************************************************************************************************************************************************************************************************************************************************