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 14:15:21 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: iTelescope Obs.,Beryl Junc. (Sato) ******************************************************************************* 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 : 246.3025, 37.7377919, 1.56349 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 246.3025,5051.53114,3883.42609 {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 >..... Daylight Cut-off Requested .....< 2026-Sep-02 02:20 C 17 06 06.15 -23 32 38.7 185.865125 28.453705 n.a. n.a. 1.027175855256 -0.1422152 0.09489740350652 0.3972618 98.3866 /T 76.3692 142.7/ 74.1567 n.a. n.a. 2.2545714 94.656485 8.7335438 2026-Sep-02 02:30 C 17 06 07.78 -23 32 40.5 188.453028 28.206787 n.a. n.a. 1.027175285005 -0.1421462 0.09489902643967 0.4119385 98.3862 /T 76.3696 142.8/ 74.0703 n.a. n.a. 2.2558707 94.509110 9.0456454 2026-Sep-02 02:40 N 17 06 09.42 -23 32 42.4 191.021123 27.871894 n.a. n.a. 1.027174715032 -0.1420771 0.09490070807049 0.4265245 98.3857 /T 76.3699 142.9/ 73.9844 n.a. n.a. 2.2577895 94.361610 9.3523561 2026-Sep-02 02:50 N 17 06 11.05 -23 32 44.1 193.563909 27.450465 n.a. n.a. 1.027174145335 -0.1420081 0.09490244797972 0.4409922 98.3852 /T 76.3703 143.0/ 73.8991 n.a. n.a. 2.2603241 94.214383 9.6528679 2026-Sep-02 03:00 N 17 06 12.69 -23 32 45.8 196.076312 26.944270 n.a. n.a. 1.027173575915 -0.1419390 0.09490424563786 0.4553143 98.3847 /T 76.3707 143.1/ 73.8143 n.a. n.a. 2.2634699 94.067817 9.9464045 2026-Sep-02 03:10 A 17 06 14.34 -23 32 47.4 198.553754 26.355370 n.a. n.a. 1.027173006772 -0.1418700 0.09490610040624 0.4694636 98.3843 /T 76.3710 143.2/ 73.7302 n.a. n.a. 2.2672206 93.922302 10.232225 2026-Sep-02 03:20 A 17 06 15.98 -23 32 49.0 200.992198 25.686084 n.a. n.a. 1.027172437906 -0.1418009 0.09490801153822 0.4834134 98.3838 /T 76.3714 143.3/ 73.6467 n.a. n.a. 2.2715690 93.778216 10.509628 2026-Sep-02 03:30 A 17 06 17.63 -23 32 50.6 203.388181 24.938947 n.a. n.a. 1.027171869317 -0.1417319 0.09490997818061 0.4971373 98.3834 /T 76.3717 143.4/ 73.5639 n.a. n.a. 2.2765064 93.635930 10.777951 2026-Sep-02 03:40 17 06 19.29 -23 32 52.0 205.738826 24.116668 n.a. n.a. 1.027171301005 -0.1416628 0.09491199937535 0.5106095 98.3830 /T 76.3720 143.5/ 73.4819 n.a. n.a. 2.2820230 93.495805 11.036578 2026-Sep-02 03:50 17 06 20.95 -23 32 53.5 208.041837 23.222089 n.a. n.a. 1.027170732970 -0.1415938 0.09491407406124 0.5238045 98.3825 /T 76.3723 143.6/ 73.4005 n.a. n.a. 2.2881078 93.358190 11.284937 2026-Sep-02 04:00 17 06 22.61 -23 32 54.9 210.295483 22.258148 n.a. n.a. 1.027170165212 -0.1415247 0.09491620107612 0.5366972 98.3821 /T 76.3726 143.7/ 73.3199 n.a. n.a. 2.2947487 93.223420 11.522501 2026-Sep-02 04:10 m 17 06 24.28 -23 32 56.2 212.498572 21.227842 n.a. n.a. 1.027169597731 -0.1414556 0.09491837915890 0.5492635 98.3817 /T 76.3728 143.8/ 73.2401 n.a. n.a. 2.3019324 93.091815 11.748795 2026-Sep-02 04:20 m 17 06 25.95 -23 32 57.5 214.650412 20.134193 n.a. n.a. 1.027169030527 -0.1413866 0.09492060695216 0.5614795 98.3814 /T 76.3731 143.9/ 73.1611 n.a. n.a. 2.3096443 92.963680 11.963389 2026-Sep-02 04:30 m 17 06 27.63 -23 32 58.7 216.750770 18.980222 n.a. n.a. 1.027168463600 -0.1413175 0.09492288300455 0.5733223 98.3810 /T 76.3733 144.0/ 73.0829 n.a. n.a. 2.3178692 92.839303 12.165901 2026-Sep-02 04:40 m 17 06 29.32 -23 32 59.9 218.799826 17.768919 n.a. n.a. 1.027167896950 -0.1412484 0.09492520577376 0.5847694 98.3807 /T 76.3735 144.1/ 73.0055 n.a. n.a. 2.3265905 92.718954 12.356000 2026-Sep-02 04:50 m 17 06 31.01 -23 33 01.0 220.798130 16.503226 n.a. n.a. 1.027167330577 -0.1411794 0.09492757362930 0.5957993 98.3804 /T 76.3737 144.2/ 72.9290 n.a. n.a. 2.3357906 92.602883 12.533399 2026-Sep-02 05:00 m 17 06 32.71 -23 33 02.1 222.746550 15.186017 n.a. n.a. 1.027166764481 -0.1411103 0.09492998485568 0.6063912 98.3801 /T 76.3738 144.3/ 72.8535 n.a. n.a. 2.3454513 92.491323 12.697861 2026-Sep-02 05:10 m 17 06 34.42 -23 33 03.2 224.646229 13.820085 n.a. n.a. 1.027166198662 -0.1410412 0.09493243765573 0.6165252 98.3798 /T 76.3739 144.4/ 72.7788 n.a. n.a. 2.3555532 92.384488 12.849193 2026-Sep-02 05:20 m 17 06 36.14 -23 33 04.2 226.498546 12.408131 n.a. n.a. 1.027165633121 -0.1409721 0.09493493015388 0.6261821 98.3796 /T 76.3740 144.5/ 72.7050 n.a. n.a. 2.3660762 92.282570 12.987243 2026-Sep-02 05:30 m 17 06 37.86 -23 33 05.2 228.305076 10.952757 n.a. n.a. 1.027165067856 -0.1409031 0.09493746039995 0.6353438 98.3794 /T 76.3741 144.6/ 72.6321 n.a. n.a. 2.3769993 92.185743 13.111907 2026-Sep-02 05:40 m 17 06 39.59 -23 33 06.2 230.067552 9.456460 n.a. n.a. 1.027164502869 -0.1408340 0.09494002637268 0.6439930 98.3792 /T 76.3741 144.7/ 72.5602 n.a. n.a. 2.3883007 92.094162 13.223116 2026-Sep-02 05:50 m 17 06 41.33 -23 33 07.1 231.787841 7.921630 n.a. n.a. 1.027163938158 -0.1407649 0.09494262598366 0.6521136 98.3791 /T 76.3741 144.8/ 72.4892 n.a. n.a. 2.3999582 92.007960 13.320844 2026-Sep-02 06:00 m 17 06 43.08 -23 33 08.0 233.467911 6.350546 n.a. n.a. 1.027163373725 -0.1406958 0.09494525708139 0.6596902 98.3789 /T 76.3741 144.9/ 72.4192 n.a. n.a. 2.4119487 91.927253 13.405098 2026-Sep-02 06:10 m 17 06 44.84 -23 33 08.9 235.109816 4.745382 n.a. n.a. 1.027162809569 -0.1406267 0.09494791745521 0.6667087 98.3788 /T 76.3740 145.0/ 72.3501 n.a. n.a. 2.4242485 91.852137 13.475921 2026-Sep-02 06:20 m 17 06 46.60 -23 33 09.7 236.715669 3.108203 n.a. n.a. 1.027162245690 -0.1405576 0.09495060483968 0.6731559 98.3788 /T 76.3739 145.1/ 72.2820 n.a. n.a. 2.4368334 91.782691 13.533388 2026-Sep-02 06:30 m 17 06 48.38 -23 33 10.5 238.287637 1.440975 n.a. n.a. 1.027161682088 -0.1404885 0.09495331691876 0.6790198 98.3788 /T 76.3738 145.1/ 72.2149 n.a. n.a. 2.4496788 91.718974 13.577605 2026-Sep-02 06:40 m 17 06 50.16 -23 33 11.3 239.827923 -0.254440 n.a. n.a. 1.027161118763 -0.1404194 0.09495605133037 0.6842894 98.3788 /T 76.3736 145.2/ 72.1487 n.a. n.a. 2.4627595 91.661032 13.608703 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-03 02:10 C 17 10 33.80 -23 37 15.2 183.116476 28.543195 n.a. n.a. 1.027097125081 -0.1323201 0.09511036302246 0.3963372 98.4504 /T 76.2941 155.2/ 63.9204 n.a. n.a. 2.2641075 94.306670 8.6582669 2026-Sep-03 02:20 C 17 10 35.44 -23 37 16.9 185.715587 28.390485 n.a. n.a. 1.027096594518 -0.1322507 0.09511198236285 0.4110767 98.4499 /T 76.2945 155.3/ 63.8204 n.a. n.a. 2.2647998 94.160525 8.9722329 2026-Sep-03 02:30 N 17 10 37.08 -23 37 18.6 188.301125 28.148784 n.a. n.a. 1.027096064233 -0.1321814 0.09511366071156 0.4257548 98.4495 /T 76.2948 155.5/ 63.7208 n.a. n.a. 2.2661125 94.013987 9.2816356 2026-Sep-03 02:40 N 17 10 38.73 -23 37 20.2 190.867244 27.819149 n.a. n.a. 1.027095534226 -0.1321120 0.09511539776668 0.4403438 98.4490 /T 76.2952 155.6/ 63.6217 n.a. n.a. 2.2680435 93.867448 9.5856492 2026-Sep-03 02:50 N 17 10 40.37 -23 37 21.8 193.408439 27.402995 n.a. n.a. 1.027095004497 -0.1320427 0.09511719311530 0.4548160 98.4486 /T 76.2955 155.7/ 63.5230 n.a. n.a. 2.2705891 93.721298 9.8834760 2026-Sep-03 03:00 N 17 10 42.02 -23 37 23.3 195.919630 26.902066 n.a. n.a. 1.027094475047 -0.1319733 0.09511904623427 0.4691442 98.4481 /T 76.2958 155.8/ 63.4249 n.a. n.a. 2.2737444 93.575926 10.174350 2026-Sep-03 03:10 A 17 10 43.68 -23 37 24.8 198.396222 26.318403 n.a. n.a. 1.027093945875 -0.1319039 0.09512095649132 0.4833012 98.4477 /T 76.2962 155.9/ 63.3273 n.a. n.a. 2.2775033 93.431713 10.457540 2026-Sep-03 03:20 A 17 10 45.33 -23 37 26.2 200.834158 25.654304 n.a. n.a. 1.027093416981 -0.1318346 0.09512292314621 0.4972604 98.4473 /T 76.2965 156.0/ 63.2304 n.a. n.a. 2.2818584 93.289034 10.732353 2026-Sep-03 03:30 A 17 10 46.99 -23 37 27.5 203.229952 24.912283 n.a. n.a. 1.027092888365 -0.1317652 0.09512494535214 0.5109953 98.4468 /T 76.2968 156.2/ 63.1341 n.a. n.a. 2.2868011 93.148256 10.998137 2026-Sep-03 03:40 17 10 48.65 -23 37 28.8 205.580698 24.095032 n.a. n.a. 1.027092360027 -0.1316958 0.09512702215737 0.5244799 98.4464 /T 76.2971 156.3/ 63.0384 n.a. n.a. 2.2923214 93.009732 11.254284 2026-Sep-03 03:50 17 10 50.32 -23 37 30.1 207.884070 23.205379 n.a. n.a. 1.027091831968 -0.1316265 0.09512915250701 0.5376889 98.4460 /T 76.2973 156.4/ 62.9435 n.a. n.a. 2.2984084 92.873807 11.500230 2026-Sep-03 04:00 17 10 52.00 -23 37 31.2 210.138306 22.246248 n.a. n.a. 1.027091304187 -0.1315571 0.09513133524511 0.5505973 98.4457 /T 76.2976 156.5/ 62.8493 n.a. n.a. 2.3050499 92.740810 11.735457 2026-Sep-03 04:10 17 10 53.67 -23 37 32.4 212.342182 21.220625 n.a. n.a. 1.027090776684 -0.1314877 0.09513356911681 0.5631807 98.4453 /T 76.2978 156.6/ 62.7560 n.a. n.a. 2.3122326 92.611056 11.959495 2026-Sep-03 04:20 17 10 55.36 -23 37 33.5 214.494974 20.131525 n.a. n.a. 1.027090249459 -0.1314183 0.09513585277072 0.5754154 98.4449 /T 76.2980 156.7/ 62.6634 n.a. n.a. 2.3199419 92.484842 12.171921 2026-Sep-03 04:30 17 10 57.05 -23 37 34.5 216.596420 18.981960 n.a. n.a. 1.027089722513 -0.1313490 0.09513818476159 0.5872783 98.4446 /T 76.2982 156.8/ 62.5717 n.a. n.a. 2.3281626 92.362450 12.372359 2026-Sep-03 04:40 17 10 58.74 -23 37 35.5 218.646670 17.774917 n.a. n.a. 1.027089195845 -0.1312796 0.09514056355292 0.5987470 98.4443 /T 76.2984 156.9/ 62.4808 n.a. n.a. 2.3368781 92.244144 12.560482 2026-Sep-03 04:50 m 17 11 00.44 -23 37 36.5 220.646246 16.513334 n.a. n.a. 1.027088669455 -0.1312102 0.09514298752008 0.6097999 98.4440 /T 76.2985 157.0/ 62.3909 n.a. n.a. 2.3460709 92.130170 12.736009 2026-Sep-03 05:00 m 17 11 02.15 -23 37 37.4 222.595990 15.200083 n.a. n.a. 1.027088143344 -0.1311408 0.09514545495324 0.6204162 98.4438 /T 76.2987 157.1/ 62.3019 n.a. n.a. 2.3557226 92.020753 12.898706 2026-Sep-03 05:10 m 17 11 03.87 -23 37 38.3 224.497022 13.837956 n.a. n.a. 1.027087617511 -0.1310714 0.09514796406070 0.6305760 98.4435 /T 76.2988 157.2/ 62.2139 n.a. n.a. 2.3658140 91.916100 13.048382 2026-Sep-03 05:20 m 17 11 05.59 -23 37 39.1 226.350700 12.429656 n.a. n.a. 1.027087091956 -0.1310020 0.09515051297235 0.6402600 98.4433 /T 76.2988 157.3/ 62.1268 n.a. n.a. 2.3763249 91.816399 13.184890 2026-Sep-03 05:30 m 17 11 07.33 -23 37 39.9 228.158577 10.977786 n.a. n.a. 1.027086566679 -0.1309327 0.09515309974319 0.6494500 98.4431 /T 76.2989 157.4/ 62.0408 n.a. n.a. 2.3872344 91.721817 13.308125 2026-Sep-03 05:40 m 17 11 09.07 -23 37 40.7 229.922371 9.484844 n.a. n.a. 1.027086041681 -0.1308633 0.09515572235704 0.6581289 98.4430 /T 76.2989 157.5/ 61.9558 n.a. n.a. 2.3985209 91.632503 13.418022 2026-Sep-03 05:50 m 17 11 10.82 -23 37 41.4 231.643931 7.953222 n.a. n.a. 1.027085516961 -0.1307939 0.09515837873042 0.6662803 98.4428 /T 76.2988 157.6/ 61.8718 n.a. n.a. 2.4101620 91.548585 13.514553 2026-Sep-03 06:00 m 17 11 12.57 -23 37 42.1 233.325211 6.385205 n.a. n.a. 1.027084992520 -0.1307245 0.09516106671643 0.6738889 98.4428 /T 76.2988 157.7/ 61.7889 n.a. n.a. 2.4221347 91.470173 13.597728 2026-Sep-03 06:10 m 17 11 14.34 -23 37 42.8 234.968252 4.782969 n.a. n.a. 1.027084468357 -0.1306551 0.09516378410898 0.6809404 98.4427 /T 76.2987 157.8/ 61.7070 n.a. n.a. 2.4344154 91.397359 13.667588 2026-Sep-03 06:20 m 17 11 16.11 -23 37 43.4 236.575157 3.148583 n.a. n.a. 1.027083944472 -0.1305857 0.09516652864687 0.6874217 98.4427 /T 76.2986 157.9/ 61.6263 n.a. n.a. 2.4469800 91.330215 13.724209 2026-Sep-03 06:30 m 17 11 17.90 -23 37 44.1 238.148079 1.484015 n.a. n.a. 1.027083420866 -0.1305163 0.09516929801822 0.6933207 98.4427 /T 76.2984 158.0/ 61.5466 n.a. n.a. 2.4598039 91.268798 13.767694 2026-Sep-03 06:40 m 17 11 19.69 -23 37 44.7 239.689213 -0.208868 n.a. n.a. 1.027082897538 -0.1304469 0.09517208986473 0.6986264 98.4427 /T 76.2982 158.1/ 61.4680 n.a. n.a. 2.4728620 91.213145 13.798174 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-04 02:10 C 17 15 04.39 -23 41 26.2 182.964754 28.482413 n.a. n.a. 1.027023591872 -0.1223124 0.09533357121424 0.4109168 98.5170 /T 76.2157 167.9/ 52.7805 n.a. n.a. 2.2745561 93.807465 8.9105371 2026-Sep-04 02:20 C 17 15 06.05 -23 41 27.7 185.561460 28.335019 n.a. n.a. 1.027023101448 -0.1222428 0.09533524903439 0.4256561 98.5165 /T 76.2160 168.0/ 52.6732 n.a. n.a. 2.2752625 93.662094 9.2217471 2026-Sep-04 02:30 N 17 15 07.70 -23 41 29.2 188.144981 28.098689 n.a. n.a. 1.027022611303 -0.1221731 0.09533698586546 0.4403357 98.5161 /T 76.2163 168.1/ 52.5661 n.a. n.a. 2.2765881 93.516452 9.5283850 2026-Sep-04 02:40 N 17 15 09.36 -23 41 30.6 190.709477 27.774453 n.a. n.a. 1.027022121437 -0.1221035 0.09533878141206 0.4549277 98.5157 /T 76.2167 168.2/ 52.4594 n.a. n.a. 2.2785307 93.370930 9.8296357 2026-Sep-04 02:50 N 17 15 11.01 -23 41 32.0 193.249437 27.363702 n.a. n.a. 1.027021631850 -0.1220338 0.09534063526786 0.4694047 98.5153 /T 76.2170 168.3/ 52.3529 n.a. n.a. 2.2810864 93.225914 10.124712 2026-Sep-04 03:00 A 17 15 12.67 -23 41 33.3 195.759769 26.868157 n.a. n.a. 1.027021142544 -0.1219642 0.09534254691630 0.4837393 98.5148 /T 76.2173 168.5/ 52.2469 n.a. n.a. 2.2842505 93.081786 10.412858 2026-Sep-04 03:10 A 17 15 14.33 -23 41 34.6 198.235862 26.289836 n.a. n.a. 1.027020653516 -0.1218945 0.09534451573170 0.4979043 98.5144 /T 76.2176 168.6/ 52.1413 n.a. n.a. 2.2880166 92.938926 10.693352 2026-Sep-04 03:20 A 17 15 16.00 -23 41 35.8 200.673637 25.631015 n.a. n.a. 1.027020164768 -0.1218249 0.09534654098041 0.5118731 98.5140 /T 76.2178 168.7/ 52.0363 n.a. n.a. 2.2923774 92.797702 10.965511 2026-Sep-04 03:30 A 17 15 17.67 -23 41 37.0 203.069581 24.894190 n.a. n.a. 1.027019676299 -0.1217552 0.09534862182214 0.5256193 98.5136 /T 76.2181 168.8/ 51.9317 n.a. n.a. 2.2973242 92.658475 11.228693 2026-Sep-04 03:40 17 15 19.34 -23 41 38.1 205.420759 24.082036 n.a. n.a. 1.027019188110 -0.1216855 0.09535075731167 0.5391169 98.5133 /T 76.2184 168.9/ 51.8277 n.a. n.a. 2.3028471 92.521595 11.482298 2026-Sep-04 03:50 17 15 21.02 -23 41 39.1 207.724814 23.197367 n.a. n.a. 1.027018700200 -0.1216159 0.09535294640058 0.5523404 98.5129 /T 76.2186 169.0/ 51.7244 n.a. n.a. 2.3089350 92.387399 11.725770 2026-Sep-04 04:00 17 15 22.70 -23 41 40.1 209.979953 22.243094 n.a. n.a. 1.027018212569 -0.1215462 0.09535518793933 0.5652648 98.5125 /T 76.2188 169.1/ 51.6217 n.a. n.a. 2.3155757 92.256211 11.958598 2026-Sep-04 04:10 17 15 24.38 -23 41 41.1 212.184917 21.222193 n.a. n.a. 1.027017725218 -0.1214766 0.09535748067936 0.5778659 98.5122 /T 76.2191 169.2/ 51.5197 n.a. n.a. 2.3227560 92.128340 12.180320 2026-Sep-04 04:20 17 15 26.08 -23 41 42.0 214.338953 20.137671 n.a. n.a. 1.027017238146 -0.1214069 0.09535982327550 0.5901198 98.5119 /T 76.2192 169.4/ 51.4184 n.a. n.a. 2.3304614 92.004076 12.390520 2026-Sep-04 04:30 17 15 27.78 -23 41 42.8 216.441765 18.992534 n.a. n.a. 1.027016751354 -0.1213372 0.09536221428859 0.6020034 98.5116 /T 76.2194 169.5/ 51.3180 n.a. n.a. 2.3386763 91.883697 12.588827 2026-Sep-04 04:40 17 15 29.48 -23 41 43.6 218.493476 17.789764 n.a. n.a. 1.027016264841 -0.1212676 0.09536465218823 0.6134943 98.5113 /T 76.2195 169.6/ 51.2183 n.a. n.a. 2.3473845 91.767459 12.774919 2026-Sep-04 04:50 17 15 31.19 -23 41 44.4 220.494579 16.532298 n.a. n.a. 1.027015778608 -0.1211979 0.09536713535562 0.6245708 98.5110 /T 76.2197 169.7/ 51.1195 n.a. n.a. 2.3565683 91.655602 12.948520 2026-Sep-04 05:00 17 15 32.91 -23 41 45.1 222.445891 15.223005 n.a. n.a. 1.027015292654 -0.1211282 0.09536966208668 0.6352122 98.5108 /T 76.2198 169.8/ 51.0216 n.a. n.a. 2.3662094 91.548345 13.109399 2026-Sep-04 05:10 17 15 34.64 -23 41 45.8 224.348511 13.864680 n.a. n.a. 1.027014806979 -0.1210585 0.09537223059533 0.6453984 98.5106 /T 76.2198 169.9/ 50.9246 n.a. n.a. 2.3762886 91.445890 13.257368 2026-Sep-04 05:20 17 15 36.37 -23 41 46.5 226.203772 12.460024 n.a. n.a. 1.027014321584 -0.1209889 0.09537483901694 0.6551101 98.5104 /T 76.2199 170.0/ 50.8286 n.a. n.a. 2.3867858 91.348417 13.392284 2026-Sep-04 05:30 17 15 38.11 -23 41 47.1 228.013210 11.011643 n.a. n.a. 1.027013836469 -0.1209192 0.09537748541175 0.6643293 98.5102 /T 76.2199 170.1/ 50.7336 n.a. n.a. 2.3976801 91.256088 13.514042 2026-Sep-04 05:40 m 17 15 39.86 -23 41 47.7 229.778524 9.522038 n.a. n.a. 1.027013351633 -0.1208495 0.09538016776867 0.6730385 98.5101 /T 76.2199 170.2/ 50.6395 n.a. n.a. 2.4089499 91.169047 13.622580 2026-Sep-04 05:50 m 17 15 41.62 -23 41 48.2 231.501550 7.993604 n.a. n.a. 1.027012867076 -0.1207798 0.09538288400914 0.6812214 98.5100 /T 76.2198 170.3/ 50.5466 n.a. n.a. 2.4205728 91.087416 13.717871 2026-Sep-04 06:00 m 17 15 43.38 -23 41 48.7 233.184227 6.428630 n.a. n.a. 1.027012382799 -0.1207101 0.09538563199099 0.6888626 98.5099 /T 76.2197 170.3/ 50.4546 n.a. n.a. 2.4325260 91.011299 13.799923 2026-Sep-04 06:10 m 17 15 45.16 -23 41 49.2 234.828584 4.829294 n.a. n.a. 1.027011898802 -0.1206404 0.09538840951263 0.6959479 98.5099 /T 76.2196 170.4/ 50.3638 n.a. n.a. 2.4447859 90.940784 13.868779 2026-Sep-04 06:20 m 17 15 46.94 -23 41 49.7 236.436712 3.197672 n.a. n.a. 1.027011415084 -0.1205707 0.09539121431714 0.7024641 98.5099 /T 76.2194 170.5/ 50.2741 n.a. n.a. 2.4573285 90.875938 13.924513 2026-Sep-04 06:30 m 17 15 48.74 -23 41 50.1 238.010755 1.535735 n.a. n.a. 1.027010931645 -0.1205011 0.09539404409671 0.7083988 98.5099 /T 76.2193 170.6/ 50.1855 n.a. n.a. 2.4701291 90.816811 13.967228 2026-Sep-04 06:40 m 17 15 50.54 -23 41 50.5 239.552899 -0.154646 n.a. n.a. 1.027010448486 -0.1204314 0.09539689649688 0.7137412 98.5100 /T 76.2190 170.7/ 50.0980 n.a. n.a. 2.4831629 90.763438 13.997054 >..... Elevation Cut-off Requested .....< >..... 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 Inquiries : Jon.D.Giorgini@jpl.nasa.gov ***************************************************************************************************************************************************************************************************************************************************