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 Wed Sep 16 12:06:49 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: VdS Remote Observatory, Hakos ******************************************************************************* 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 : 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.260915.p261212 EOP coverage : DATA-BASED 1962-JAN-20 TO 2026-SEP-15. PREDICTS-> 2026-DEC-11 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 2026-Sep-02 00:00 m 17 05 34.50 -23 30 09.4 244.261051 0.049211 n.a. n.a. 1.027183867849 -0.1431816 0.09489741414858 0.7468436 98.3550 /T 76.4005 141.8/ 74.7349 n.a. n.a. 2.6350364 91.124136 13.879419 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-02 17:00 C 17 08 51.56 -23 34 11.9 96.081913 85.943442 n.a. n.a. 1.027126734163 -0.1361311 0.09500540378380 0.3430373 98.4281 /T 76.3220 150.5/ 67.7984 n.a. n.a. 2.2113611 95.074082 7.6936503 2026-Sep-02 17:10 N 17 08 53.16 -23 34 13.9 102.307054 88.215692 n.a. n.a. 1.027126188314 -0.1360619 0.09500681408513 0.3601620 98.4275 /T 76.3225 150.6/ 67.6982 n.a. n.a. 2.2099846 94.905244 8.0775797 2026-Sep-02 17:20 Nt 17 08 54.77 -23 34 15.8 235.919477 89.338817 n.a. n.a. 1.027125642743 -0.1359927 0.09500829313583 0.3773111 98.4269 /T 76.3231 150.7/ 67.5983 n.a. n.a. 2.2093312 94.734436 8.4590527 2026-Sep-02 17:30 N 17 08 56.37 -23 34 17.6 261.972494 87.133540 n.a. n.a. 1.027125097450 -0.1359234 0.09500984096914 0.3944524 98.4263 /T 76.3236 150.8/ 67.4988 n.a. n.a. 2.2094029 94.562144 8.8369486 2026-Sep-02 17:40 A 17 08 57.97 -23 34 19.4 264.766182 84.850286 n.a. n.a. 1.027124552434 -0.1358542 0.09501145748818 0.4115532 98.4257 /T 76.3241 151.0/ 67.3998 n.a. n.a. 2.2102000 94.388856 9.2101674 2026-Sep-02 17:50 A 17 08 59.57 -23 34 21.1 265.536236 82.560890 n.a. n.a. 1.027124007697 -0.1357849 0.09501314246597 0.4285813 98.4251 /T 76.3246 151.1/ 67.3013 n.a. n.a. 2.2117215 94.215067 9.5776362 2026-Sep-02 18:00 17 09 01.18 -23 34 22.8 265.708523 80.270146 n.a. n.a. 1.027123463237 -0.1357157 0.09501489554605 0.4455044 98.4245 /T 76.3251 151.2/ 67.2034 n.a. n.a. 2.2139646 94.041271 9.9383163 2026-Sep-02 18:10 17 09 02.78 -23 34 24.4 265.623521 77.979331 n.a. n.a. 1.027122919054 -0.1356464 0.09501671624298 0.4622905 98.4239 /T 76.3256 151.3/ 67.1060 n.a. n.a. 2.2169251 93.867960 10.291208 2026-Sep-02 18:20 17 09 04.39 -23 34 25.9 265.403562 75.689022 n.a. n.a. 1.027122375150 -0.1355772 0.09501860394342 0.4789079 98.4233 /T 76.3260 151.4/ 67.0093 n.a. n.a. 2.2205974 93.695621 10.635358 2026-Sep-02 18:30 17 09 06.01 -23 34 27.4 265.103232 73.399579 n.a. n.a. 1.027121831523 -0.1355079 0.09502055790721 0.4953250 98.4227 /T 76.3265 151.5/ 66.9133 n.a. n.a. 2.2249741 93.524733 10.969862 2026-Sep-02 18:40 17 09 07.62 -23 34 28.8 264.750431 71.111281 n.a. n.a. 1.027121288174 -0.1354387 0.09502257726884 0.5115109 98.4221 /T 76.3270 151.7/ 66.8180 n.a. n.a. 2.2300466 93.355766 11.293869 2026-Sep-02 18:50 17 09 09.25 -23 34 30.1 264.360794 68.824370 n.a. n.a. 1.027120745103 -0.1353694 0.09502466103907 0.5274348 98.4216 /T 76.3274 151.8/ 66.7235 n.a. n.a. 2.2358046 93.189177 11.606587 2026-Sep-02 19:00 17 09 10.87 -23 34 31.4 263.943673 66.539072 n.a. n.a. 1.027120202309 -0.1353002 0.09502680810679 0.5430667 98.4210 /T 76.3278 151.9/ 66.6298 n.a. n.a. 2.2422366 93.025407 11.907283 2026-Sep-02 19:10 17 09 12.50 -23 34 32.6 263.504923 64.255610 n.a. n.a. 1.027119659794 -0.1352309 0.09502901724125 0.5583771 98.4205 /T 76.3282 152.0/ 66.5369 n.a. n.a. 2.2493294 92.864881 12.195287 2026-Sep-02 19:20 17 09 14.14 -23 34 33.8 263.048326 61.974204 n.a. n.a. 1.027119117556 -0.1351617 0.09503128709433 0.5733370 98.4200 /T 76.3286 152.1/ 66.4449 n.a. n.a. 2.2570688 92.708004 12.469991 2026-Sep-02 19:30 17 09 15.78 -23 34 34.9 262.576365 59.695078 n.a. n.a. 1.027118575596 -0.1350924 0.09503361620309 0.5879180 98.4195 /T 76.3290 152.2/ 66.3539 n.a. n.a. 2.2654389 92.555162 12.730854 2026-Sep-02 19:40 17 09 17.43 -23 34 35.9 262.090672 57.418459 n.a. n.a. 1.027118033914 -0.1350231 0.09503600299266 0.6020928 98.4190 /T 76.3293 152.3/ 66.2638 n.a. n.a. 2.2744227 92.406718 12.977397 2026-Sep-02 19:50 17 09 19.09 -23 34 36.9 261.592306 55.144584 n.a. n.a. 1.027117492509 -0.1349539 0.09503844577919 0.6158344 98.4185 /T 76.3297 152.4/ 66.1746 n.a. n.a. 2.2840019 92.263011 13.209207 2026-Sep-02 20:00 17 09 20.75 -23 34 37.8 261.081914 52.873695 n.a. n.a. 1.027116951383 -0.1348846 0.09504094277302 0.6291169 98.4181 /T 76.3300 152.5/ 66.0865 n.a. n.a. 2.2941572 92.124357 13.425931 2026-Sep-02 20:10 17 09 22.42 -23 34 38.7 260.559851 50.606045 n.a. n.a. 1.027116410534 -0.1348153 0.09504349208220 0.6419153 98.4177 /T 76.3302 152.6/ 65.9995 n.a. n.a. 2.3048678 91.991046 13.627281 2026-Sep-02 20:20 17 09 24.10 -23 34 39.6 260.026245 48.341898 n.a. n.a. 1.027115869964 -0.1347460 0.09504609171605 0.6542054 98.4173 /T 76.3304 152.7/ 65.9135 n.a. n.a. 2.3161122 91.863344 13.813025 2026-Sep-02 20:30 17 09 25.79 -23 34 40.4 259.481052 46.081530 n.a. n.a. 1.027115329671 -0.1346768 0.09504873958896 0.6659641 98.4169 /T 76.3307 152.8/ 65.8286 n.a. n.a. 2.3278675 91.741489 13.982991 2026-Sep-02 20:40 17 09 27.49 -23 34 41.1 258.924089 43.825229 n.a. n.a. 1.027114789656 -0.1346075 0.09505143352436 0.6771691 98.4166 /T 76.3308 152.9/ 65.7449 n.a. n.a. 2.3401102 91.625694 14.137062 2026-Sep-02 20:50 17 09 29.19 -23 34 41.8 258.355055 41.573299 n.a. n.a. 1.027114249919 -0.1345382 0.09505417125887 0.6877994 98.4163 /T 76.3310 153.0/ 65.6623 n.a. n.a. 2.3528155 91.516146 14.275169 2026-Sep-02 21:00 17 09 30.91 -23 34 42.5 257.773553 39.326060 n.a. n.a. 1.027113710459 -0.1344689 0.09505695044668 0.6978349 98.4160 /T 76.3311 153.1/ 65.5808 n.a. n.a. 2.3659580 91.413008 14.397297 2026-Sep-02 21:10 17 09 32.63 -23 34 43.1 257.179096 37.083850 n.a. n.a. 1.027113171278 -0.1343996 0.09505976866396 0.7072569 98.4158 /T 76.3311 153.2/ 65.5006 n.a. n.a. 2.3795115 91.316417 14.503475 2026-Sep-02 21:20 17 09 34.37 -23 34 43.7 256.571116 34.847026 n.a. n.a. 1.027112632375 -0.1343303 0.09506262341347 0.7160475 98.4156 /T 76.3312 153.3/ 65.4215 n.a. n.a. 2.3934490 91.226484 14.593774 2026-Sep-02 21:30 17 09 36.11 -23 34 44.3 255.948970 32.615968 n.a. n.a. 1.027112093749 -0.1342611 0.09506551212944 0.7241903 98.4155 /T 76.3311 153.4/ 65.3436 n.a. n.a. 2.4077428 91.143299 14.668306 2026-Sep-02 21:40 17 09 37.87 -23 34 44.8 255.311944 30.391076 n.a. n.a. 1.027111555402 -0.1341918 0.09506843218233 0.7316700 98.4154 /T 76.3311 153.5/ 65.2670 n.a. n.a. 2.4223646 91.066927 14.727220 2026-Sep-02 21:50 17 09 39.64 -23 34 45.3 254.659249 28.172779 n.a. n.a. 1.027111017332 -0.1341225 0.09507138088387 0.7384726 98.4153 /T 76.3310 153.6/ 65.1916 n.a. n.a. 2.4372857 90.997413 14.770698 2026-Sep-02 22:00 m 17 09 41.42 -23 34 45.8 253.990027 25.961532 n.a. n.a. 1.027110479540 -0.1340532 0.09507435549222 0.7445854 98.4152 /T 76.3309 153.7/ 65.1175 n.a. n.a. 2.4524767 90.934780 14.798952 2026-Sep-02 22:10 m 17 09 43.21 -23 34 46.3 253.303345 23.757823 n.a. n.a. 1.027109942027 -0.1339839 0.09507735321725 0.7499971 98.4152 /T 76.3307 153.7/ 65.0445 n.a. n.a. 2.4679079 90.879031 14.812222 2026-Sep-02 22:20 m 17 09 45.01 -23 34 46.7 252.598194 21.562170 n.a. n.a. 1.027109404791 -0.1339146 0.09508037122568 0.7546974 98.4153 /T 76.3305 153.8/ 64.9729 n.a. n.a. 2.4835492 90.830153 14.810775 2026-Sep-02 22:30 m 17 09 46.82 -23 34 47.1 251.873488 19.375130 n.a. n.a. 1.027108867833 -0.1338453 0.09508340664666 0.7586778 98.4154 /T 76.3302 153.9/ 64.9024 n.a. n.a. 2.4993703 90.788113 14.794896 2026-Sep-02 22:40 m 17 09 48.64 -23 34 47.5 251.128055 17.197300 n.a. n.a. 1.027108331153 -0.1337760 0.09508645657714 0.7619309 98.4155 /T 76.3299 154.0/ 64.8332 n.a. n.a. 2.5153405 90.752863 14.764893 2026-Sep-02 22:50 m 17 09 50.48 -23 34 47.9 250.360641 15.029319 n.a. n.a. 1.027107794751 -0.1337067 0.09508951808741 0.7644508 98.4157 /T 76.3296 154.1/ 64.7653 n.a. n.a. 2.5314290 90.724339 14.721091 2026-Sep-02 23:00 m 17 09 52.32 -23 34 48.3 249.569896 12.871878 n.a. n.a. 1.027107258627 -0.1336374 0.09509258822674 0.7662328 98.4159 /T 76.3292 154.1/ 64.6986 n.a. n.a. 2.5476050 90.702466 14.663830 2026-Sep-02 23:10 m 17 09 54.18 -23 34 48.7 248.754372 10.725718 n.a. n.a. 1.027106722781 -0.1335680 0.09509566402886 0.7672739 98.4162 /T 76.3288 154.2/ 64.6330 n.a. n.a. 2.5638374 90.687153 14.593460 2026-Sep-02 23:20 m 17 09 56.05 -23 34 49.1 247.912521 8.591637 n.a. n.a. 1.027106187213 -0.1334987 0.09509874251776 0.7675723 98.4165 /T 76.3283 154.3/ 64.5687 n.a. n.a. 2.5800953 90.678300 14.510348 2026-Sep-02 23:30 m 17 09 57.94 -23 34 49.4 247.042681 6.470498 n.a. n.a. 1.027105651923 -0.1334294 0.09510182071329 0.7671277 98.4168 /T 76.3277 154.3/ 64.5056 n.a. n.a. 2.5963478 90.675796 14.414864 2026-Sep-02 23:40 m 17 09 59.83 -23 34 49.8 246.143072 4.363235 n.a. n.a. 1.027105116911 -0.1333601 0.09510489563673 0.7659411 98.4172 /T 76.3272 154.4/ 64.4437 n.a. n.a. 2.6125641 90.679521 14.307392 2026-Sep-02 23:50 m 17 10 01.74 -23 34 50.2 245.211792 2.270854 n.a. n.a. 1.027104582177 -0.1332908 0.09510796431665 0.7640151 98.4177 /T 76.3266 154.5/ 64.3829 n.a. n.a. 2.6287134 90.689346 14.188317 2026-Sep-03 00:00 m 17 10 03.65 -23 34 50.6 244.246804 0.194449 n.a. n.a. 1.027104047722 -0.1332215 0.09511102379443 0.7613536 98.4182 /T 76.3259 154.5/ 64.3232 n.a. n.a. 2.6447655 90.705135 14.058032 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-03 17:00 C 17 13 21.66 -23 38 33.6 96.902882 85.809593 n.a. n.a. 1.027050995135 -0.1261397 0.09522520676514 0.3572428 98.4936 /T 76.2449 163.0/ 57.0043 n.a. n.a. 2.2217514 94.563242 7.9530445 2026-Sep-03 17:10 N 17 13 23.27 -23 38 35.4 103.578099 88.075292 n.a. n.a. 1.027050489360 -0.1260702 0.09522667403302 0.3743609 98.4930 /T 76.2454 163.1/ 56.8946 n.a. n.a. 2.2203963 94.394855 8.3337516 2026-Sep-03 17:20 Nt 17 13 24.88 -23 38 37.2 223.598772 89.392762 n.a. n.a. 1.027049983864 -0.1260007 0.09522821002770 0.3915054 98.4924 /T 76.2458 163.2/ 56.7852 n.a. n.a. 2.2197632 94.224660 8.7119516 2026-Sep-03 17:30 N 17 13 26.49 -23 38 38.8 260.210638 87.251704 n.a. n.a. 1.027049478647 -0.1259311 0.09522981478974 0.4086438 98.4919 /T 76.2463 163.3/ 56.6760 n.a. n.a. 2.2198539 94.053138 9.0865373 2026-Sep-03 17:40 A 17 13 28.10 -23 38 40.4 263.894716 84.974528 n.a. n.a. 1.027048973708 -0.1258616 0.09523148822969 0.4257436 98.4913 /T 76.2468 163.5/ 56.5671 n.a. n.a. 2.2206686 93.880777 9.4564225 2026-Sep-03 17:50 A 17 13 29.72 -23 38 42.0 264.967394 82.687685 n.a. n.a. 1.027048469049 -0.1257920 0.09523323012809 0.4427725 98.4907 /T 76.2473 163.6/ 56.4585 n.a. n.a. 2.2222062 93.708066 9.8205486 2026-Sep-03 18:00 17 13 31.33 -23 38 43.4 265.290446 80.398536 n.a. n.a. 1.027047964668 -0.1257225 0.09523504013592 0.4596984 98.4901 /T 76.2477 163.7/ 56.3504 n.a. n.a. 2.2244639 93.535495 10.177891 2026-Sep-03 18:10 17 13 32.95 -23 38 44.8 265.295400 78.108917 n.a. n.a. 1.027047460567 -0.1256529 0.09523691777538 0.4764891 98.4896 /T 76.2482 163.8/ 56.2427 n.a. n.a. 2.2274374 93.363551 10.527463 2026-Sep-03 18:20 17 13 34.57 -23 38 46.2 265.135098 75.819599 n.a. n.a. 1.027046956744 -0.1255834 0.09523886244066 0.4931130 98.4890 /T 76.2486 163.9/ 56.1356 n.a. n.a. 2.2311209 93.192714 10.868325 2026-Sep-03 18:30 17 13 36.19 -23 38 47.4 264.877183 73.531025 n.a. n.a. 1.027046453201 -0.1255138 0.09524087339920 0.5095385 98.4884 /T 76.2491 164.1/ 56.0290 n.a. n.a. 2.2355072 93.023459 11.199587 2026-Sep-03 18:40 17 13 37.82 -23 38 48.6 264.556064 71.243515 n.a. n.a. 1.027045949936 -0.1254443 0.09524294979303 0.5257346 98.4879 /T 76.2495 164.2/ 55.9230 n.a. n.a. 2.2405874 92.856249 11.520409 2026-Sep-03 18:50 17 13 39.45 -23 38 49.8 264.190985 68.957336 n.a. n.a. 1.027045446951 -0.1253747 0.09524509064043 0.5416707 98.4873 /T 76.2499 164.3/ 55.8177 n.a. n.a. 2.2463513 92.691532 11.830011 2026-Sep-03 19:00 17 13 41.08 -23 38 50.9 263.793453 66.672730 n.a. n.a. 1.027044944244 -0.1253052 0.09524729483784 0.5573167 98.4868 /T 76.2503 164.4/ 55.7131 n.a. n.a. 2.2527872 92.529743 12.127672 2026-Sep-03 19:10 17 13 42.72 -23 38 51.9 263.370694 64.389927 n.a. n.a. 1.027044441816 -0.1252356 0.09524956116188 0.5726429 98.4863 /T 76.2507 164.5/ 55.6093 n.a. n.a. 2.2598820 92.371300 12.412732 2026-Sep-03 19:20 17 13 44.37 -23 38 52.9 262.927400 62.109153 n.a. n.a. 1.027043939668 -0.1251661 0.09525188827184 0.5876205 98.4858 /T 76.2511 164.6/ 55.5063 n.a. n.a. 2.2676214 92.216601 12.684594 2026-Sep-03 19:30 17 13 46.02 -23 38 53.8 262.466684 59.830637 n.a. n.a. 1.027043437798 -0.1250965 0.09525427471204 0.6022210 98.4853 /T 76.2514 164.7/ 55.4042 n.a. n.a. 2.2759895 92.066022 12.942723 2026-Sep-03 19:40 17 13 47.68 -23 38 54.6 261.990630 57.554611 n.a. n.a. 1.027042936208 -0.1250269 0.09525671891482 0.6164170 98.4849 /T 76.2517 164.9/ 55.3029 n.a. n.a. 2.2849694 91.919920 13.186649 2026-Sep-03 19:50 17 13 49.35 -23 38 55.4 261.500622 55.281311 n.a. n.a. 1.027042434896 -0.1249574 0.09525921920334 0.6301816 98.4844 /T 76.2520 165.0/ 55.2026 n.a. n.a. 2.2945427 91.778625 13.415966 2026-Sep-03 20:00 17 13 51.02 -23 38 56.2 260.997558 53.010982 n.a. n.a. 1.027041933863 -0.1248878 0.09526177379492 0.6434889 98.4840 /T 76.2523 165.1/ 55.1032 n.a. n.a. 2.3046900 91.642446 13.630326 2026-Sep-03 20:10 17 13 52.70 -23 38 56.9 260.481978 50.743879 n.a. n.a. 1.027041433110 -0.1248182 0.09526438080443 0.6563137 98.4836 /T 76.2525 165.2/ 55.0049 n.a. n.a. 2.3153907 91.511666 13.829447 2026-Sep-03 20:20 17 13 54.39 -23 38 57.5 259.954160 48.480265 n.a. n.a. 1.027040932636 -0.1247487 0.09526703824781 0.6686318 98.4833 /T 76.2527 165.3/ 54.9077 n.a. n.a. 2.3266232 91.386540 14.013101 2026-Sep-03 20:30 17 13 56.08 -23 38 58.2 259.414175 46.220418 n.a. n.a. 1.027040432440 -0.1246791 0.09526974404590 0.6804201 98.4829 /T 76.2529 165.4/ 54.8115 n.a. n.a. 2.3383647 91.267301 14.181118 2026-Sep-03 20:40 17 13 57.79 -23 38 58.7 258.861934 43.964627 n.a. n.a. 1.027039932524 -0.1246095 0.09527249602848 0.6916563 98.4826 /T 76.2530 165.5/ 54.7165 n.a. n.a. 2.3505917 91.154155 14.333382 2026-Sep-03 20:50 17 13 59.50 -23 38 59.2 258.297213 41.713195 n.a. n.a. 1.027039432887 -0.1245399 0.09527529193825 0.7023193 98.4824 /T 76.2531 165.6/ 54.6226 n.a. n.a. 2.3632794 91.047282 14.469830 2026-Sep-03 21:00 17 14 01.23 -23 38 59.7 257.719675 39.466442 n.a. n.a. 1.027038933529 -0.1244704 0.09527812943533 0.7123890 98.4821 /T 76.2532 165.7/ 54.5299 n.a. n.a. 2.3764026 90.946836 14.590444 2026-Sep-03 21:10 17 14 02.96 -23 39 00.1 257.128887 37.224707 n.a. n.a. 1.027038434450 -0.1244008 0.09528100610157 0.7218464 98.4819 /T 76.2533 165.8/ 54.4384 n.a. n.a. 2.3899351 90.852948 14.695253 2026-Sep-03 21:20 17 14 04.71 -23 39 00.6 256.524325 34.988347 n.a. n.a. 1.027037935650 -0.1243312 0.09528391944521 0.7306739 98.4818 /T 76.2533 165.9/ 54.3481 n.a. n.a. 2.4038499 90.765723 14.784329 2026-Sep-03 21:30 17 14 06.46 -23 39 00.9 255.905384 32.757739 n.a. n.a. 1.027037437129 -0.1242616 0.09528686690567 0.7388548 98.4816 /T 76.2532 166.0/ 54.2591 n.a. n.a. 2.4181194 90.685245 14.857782 2026-Sep-03 21:40 17 14 08.23 -23 39 01.3 255.271380 30.533286 n.a. n.a. 1.027036938887 -0.1241920 0.09528984585838 0.7463739 98.4816 /T 76.2531 166.0/ 54.1714 n.a. n.a. 2.4327154 90.611573 14.915759 2026-Sep-03 21:50 17 14 10.00 -23 39 01.6 254.621556 28.315414 n.a. n.a. 1.027036440924 -0.1241224 0.09529285361986 0.7532170 98.4815 /T 76.2530 166.1/ 54.0850 n.a. n.a. 2.4476093 90.544746 14.958440 2026-Sep-03 22:00 17 14 11.79 -23 39 01.9 253.955075 26.104579 n.a. n.a. 1.027035943241 -0.1240528 0.09529588745270 0.7593713 98.4815 /T 76.2529 166.2/ 54.0000 n.a. n.a. 2.4627718 90.484782 14.986035 2026-Sep-03 22:10 17 14 13.59 -23 39 02.1 253.271029 23.901266 n.a. n.a. 1.027035445837 -0.1239832 0.09529894457092 0.7648255 98.4815 /T 76.2527 166.3/ 53.9162 n.a. n.a. 2.4781732 90.431680 14.998781 2026-Sep-03 22:20 17 14 15.40 -23 39 02.4 252.568428 21.705994 n.a. n.a. 1.027034948711 -0.1239136 0.09530202214520 0.7695694 98.4816 /T 76.2524 166.4/ 53.8338 n.a. n.a. 2.4937836 90.385421 14.996940 2026-Sep-03 22:30 17 14 17.22 -23 39 02.6 251.846204 19.519318 n.a. n.a. 1.027034451865 -0.1238441 0.09530511730825 0.7735941 98.4817 /T 76.2521 166.5/ 53.7528 n.a. n.a. 2.5095728 90.345967 14.980796 2026-Sep-03 22:40 17 14 19.05 -23 39 02.8 251.103204 17.341834 n.a. n.a. 1.027033955298 -0.1237745 0.09530822716036 0.7768924 98.4819 /T 76.2518 166.6/ 53.6732 n.a. n.a. 2.5255101 90.313267 14.950652 2026-Sep-03 22:50 17 14 20.89 -23 39 03.0 250.338188 15.174180 n.a. n.a. 1.027033459011 -0.1237048 0.09531134877484 0.7794581 98.4821 /T 76.2514 166.6/ 53.5949 n.a. n.a. 2.5415650 90.287254 14.906829 2026-Sep-03 23:00 17 14 22.75 -23 39 03.2 249.549823 13.017043 n.a. n.a. 1.027032963002 -0.1236352 0.09531447920361 0.7812866 98.4823 /T 76.2510 166.7/ 53.5179 n.a. n.a. 2.5577065 90.267847 14.849662 2026-Sep-03 23:10 m 17 14 24.62 -23 39 03.4 248.736675 10.871163 n.a. n.a. 1.027032467272 -0.1235656 0.09531761548284 0.7823748 98.4826 /T 76.2506 166.8/ 53.4424 n.a. n.a. 2.5739039 90.254953 14.779499 2026-Sep-03 23:20 m 17 14 26.49 -23 39 03.6 247.897211 8.737337 n.a. n.a. 1.027031971822 -0.1234960 0.09532075463855 0.7827207 98.4829 /T 76.2500 166.9/ 53.3682 n.a. n.a. 2.5901263 90.248470 14.696701 2026-Sep-03 23:30 m 17 14 28.39 -23 39 03.8 247.029781 6.616424 n.a. n.a. 1.027031476651 -0.1234264 0.09532389369233 0.7823240 98.4833 /T 76.2495 166.9/ 53.2954 n.a. n.a. 2.6063428 90.248282 14.601636 2026-Sep-03 23:40 m 17 14 30.29 -23 39 04.0 246.132624 4.509355 n.a. n.a. 1.027030981759 -0.1233568 0.09532702966692 0.7811857 98.4837 /T 76.2489 167.0/ 53.2239 n.a. n.a. 2.6225228 90.254267 14.494681 2026-Sep-03 23:50 m 17 14 32.20 -23 39 04.2 245.203848 2.417133 n.a. n.a. 1.027030487146 -0.1232872 0.09533015959195 0.7793081 98.4842 /T 76.2483 167.1/ 53.1538 n.a. n.a. 2.6386357 90.266294 14.376218 2026-Sep-04 00:00 m 17 14 34.13 -23 39 04.4 244.241433 0.340848 n.a. n.a. 1.027029992813 -0.1232176 0.09533328050951 0.7766952 98.4847 /T 76.2476 167.1/ 53.0850 n.a. n.a. 2.6546512 90.284224 14.246638 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2026-Sep-04 17:00 C 17 17 53.07 -23 42 27.6 97.566302 85.670893 n.a. n.a. 1.026981038804 -0.1161066 0.09545397000002 0.3721278 98.5625 /T 76.1639 174.4/ 45.7555 n.a. n.a. 2.2324156 94.049680 8.2214040 2026-Sep-04 17:10 N 17 17 54.69 -23 42 29.2 104.439448 87.931178 n.a. n.a. 1.026980573270 -0.1160368 0.09545549695967 0.3892393 98.5619 /T 76.1644 174.5/ 45.6434 n.a. n.a. 2.2310817 93.881824 8.5988106 2026-Sep-04 17:20 Nt 17 17 56.31 -23 42 30.8 209.620148 89.423236 n.a. n.a. 1.026980108016 -0.1159670 0.09545709262310 0.4063790 98.5614 /T 76.1648 174.6/ 45.5313 n.a. n.a. 2.2304683 93.712320 8.9736596 2026-Sep-04 17:30 N 17 17 57.93 -23 42 32.3 258.436320 87.373183 n.a. n.a. 1.026979643041 -0.1158972 0.09545875703859 0.4235144 98.5608 /T 76.1652 174.7/ 45.4192 n.a. n.a. 2.2305773 93.541647 9.3448577 2026-Sep-04 17:40 A 17 17 59.56 -23 42 33.7 263.063330 85.103015 n.a. n.a. 1.026979178347 -0.1158274 0.09546049012431 0.4406133 98.5603 /T 76.1657 174.7/ 45.3072 n.a. n.a. 2.2314088 93.370287 9.7113329 2026-Sep-04 17:50 A 17 18 01.18 -23 42 35.0 264.437741 82.818900 n.a. n.a. 1.026978713933 -0.1157575 0.09546229166854 0.4576433 98.5597 /T 76.1661 174.8/ 45.1954 n.a. n.a. 2.2329616 93.198726 10.072041 2026-Sep-04 18:00 A 17 18 02.80 -23 42 36.3 264.906872 80.531376 n.a. n.a. 1.026978249799 -0.1156877 0.09546416133007 0.4745720 98.5592 /T 76.1666 174.9/ 45.0838 n.a. n.a. 2.2352329 93.027450 10.425970 2026-Sep-04 18:10 17 18 04.43 -23 42 37.5 264.997531 78.242938 n.a. n.a. 1.026977785945 -0.1156179 0.09546609863890 0.4913677 98.5586 /T 76.1670 175.0/ 44.9725 n.a. n.a. 2.2382183 92.856939 10.772150 2026-Sep-04 18:20 17 18 06.06 -23 42 38.6 264.893440 75.954571 n.a. n.a. 1.026977322371 -0.1155481 0.09546810299700 0.5079983 98.5581 /T 76.1674 175.0/ 44.8615 n.a. n.a. 2.2419119 92.687669 11.109653 2026-Sep-04 18:30 17 18 07.69 -23 42 39.7 264.675180 73.666816 n.a. n.a. 1.026976859077 -0.1154782 0.09547017367962 0.5244326 98.5576 /T 76.1678 175.1/ 44.7510 n.a. n.a. 2.2463063 92.520107 11.437602 2026-Sep-04 18:40 17 18 09.32 -23 42 40.7 264.383515 71.380038 n.a. n.a. 1.026976396063 -0.1154084 0.09547230983657 0.5406394 98.5570 /T 76.1682 175.2/ 44.6408 n.a. n.a. 2.2513928 92.354709 11.755172 2026-Sep-04 18:50 17 18 10.96 -23 42 41.7 264.041167 69.094531 n.a. n.a. 1.026975933330 -0.1153386 0.09547451049386 0.5565882 98.5565 /T 76.1686 175.2/ 44.5312 n.a. n.a. 2.2571610 92.191918 12.061593 2026-Sep-04 19:00 17 18 12.61 -23 42 42.6 263.661710 66.810551 n.a. n.a. 1.026975470876 -0.1152687 0.09547677455565 0.5722487 98.5560 /T 76.1690 175.3/ 44.4221 n.a. n.a. 2.2635992 92.032161 12.356155 2026-Sep-04 19:10 17 18 14.26 -23 42 43.4 263.253671 64.528339 n.a. n.a. 1.026975008703 -0.1151989 0.09547910080617 0.5875913 98.5555 /T 76.1694 175.3/ 44.3136 n.a. n.a. 2.2706944 91.875847 12.638210 2026-Sep-04 19:20 17 18 15.91 -23 42 44.2 262.822602 62.248129 n.a. n.a. 1.026974546809 -0.1151291 0.09548148791223 0.6025872 98.5551 /T 76.1697 175.4/ 44.2058 n.a. n.a. 2.2784320 91.723367 12.907168 2026-Sep-04 19:30 17 18 17.57 -23 42 44.9 262.372209 59.970152 n.a. n.a. 1.026974085196 -0.1150592 0.09548393442562 0.6172078 98.5546 /T 76.1700 175.4/ 44.0987 n.a. n.a. 2.2867963 91.575091 13.162506 2026-Sep-04 19:40 17 18 19.24 -23 42 45.6 261.904995 57.694644 n.a. n.a. 1.026973623863 -0.1149894 0.09548643878597 0.6314258 98.5542 /T 76.1703 175.4/ 43.9923 n.a. n.a. 2.2957703 91.431365 13.403761 2026-Sep-04 19:50 17 18 20.92 -23 42 46.2 261.422653 55.421844 n.a. n.a. 1.026973162810 -0.1149196 0.09548899932367 0.6452141 98.5538 /T 76.1705 175.5/ 43.8868 n.a. n.a. 2.3053356 91.292514 13.630531 2026-Sep-04 20:00 17 18 22.60 -23 42 46.8 260.926309 53.151998 n.a. n.a. 1.026972702037 -0.1148497 0.09549161426314 0.6585469 98.5534 /T 76.1708 175.5/ 43.7820 n.a. n.a. 2.3154729 91.158837 13.842478 2026-Sep-04 20:10 17 18 24.29 -23 42 47.3 260.416682 50.885363 n.a. n.a. 1.026972241545 -0.1147799 0.09549428172611 0.6713988 98.5530 /T 76.1710 175.5/ 43.6782 n.a. n.a. 2.3261616 91.030610 14.039321 2026-Sep-04 20:20 17 18 25.99 -23 42 47.7 259.894182 48.622202 n.a. n.a. 1.026971781332 -0.1147100 0.09549699973528 0.6837458 98.5527 /T 76.1712 175.5/ 43.5753 n.a. n.a. 2.3373800 90.908081 14.220838 2026-Sep-04 20:30 17 18 27.69 -23 42 48.1 259.358990 46.362794 n.a. n.a. 1.026971321400 -0.1146402 0.09549976621810 0.6955645 98.5524 /T 76.1713 175.6/ 43.4734 n.a. n.a. 2.3491056 90.791475 14.386862 2026-Sep-04 20:40 17 18 29.41 -23 42 48.5 258.811103 44.107428 n.a. n.a. 1.026970861748 -0.1145703 0.09550257901064 0.7068328 98.5521 /T 76.1714 175.6/ 43.3725 n.a. n.a. 2.3613146 90.680989 14.537279 2026-Sep-04 20:50 17 18 31.13 -23 42 48.8 258.250366 41.856407 n.a. n.a. 1.026970402376 -0.1145005 0.09550543586187 0.7175293 98.5519 /T 76.1715 175.6/ 43.2727 n.a. n.a. 2.3739826 90.576798 14.672027 2026-Sep-04 21:00 17 18 32.86 -23 42 49.1 257.676502 39.610052 n.a. n.a. 1.026969943284 -0.1144306 0.09550833443776 0.7276339 98.5517 /T 76.1716 175.6/ 43.1739 n.a. n.a. 2.3870842 90.479049 14.791089 2026-Sep-04 21:10 17 18 34.61 -23 42 49.4 257.089124 37.368701 n.a. n.a. 1.026969484473 -0.1143607 0.09551127232594 0.7371277 98.5515 /T 76.1716 175.6/ 43.0763 n.a. n.a. 2.4005933 90.387866 14.894495 2026-Sep-04 21:20 17 18 36.36 -23 42 49.6 256.487750 35.132711 n.a. n.a. 1.026969025941 -0.1142909 0.09551424704013 0.7459929 98.5513 /T 76.1715 175.6/ 42.9798 n.a. n.a. 2.4144831 90.303347 14.982314 2026-Sep-04 21:30 17 18 38.12 -23 42 49.8 255.871809 32.902458 n.a. n.a. 1.026968567690 -0.1142210 0.09551725602498 0.7542128 98.5512 /T 76.1715 175.6/ 42.8846 n.a. n.a. 2.4287261 90.225571 15.054657 2026-Sep-04 21:40 17 18 39.90 -23 42 49.9 255.240648 30.678345 n.a. n.a. 1.026968109719 -0.1141512 0.09552029666090 0.7617721 98.5512 /T 76.1714 175.6/ 42.7906 n.a. n.a. 2.4432941 90.154591 15.111668 2026-Sep-04 21:50 17 18 41.68 -23 42 50.0 254.593533 28.460798 n.a. n.a. 1.026967652028 -0.1140813 0.09552336626908 0.7686565 98.5511 /T 76.1712 175.6/ 42.6978 n.a. n.a. 2.4581585 90.090440 15.153525 2026-Sep-04 22:00 17 18 43.48 -23 42 50.1 253.929655 26.250270 n.a. n.a. 1.026967194618 -0.1140114 0.09552646211660 0.7748532 98.5512 /T 76.1710 175.5/ 42.6063 n.a. n.a. 2.4732902 90.033131 15.180435 2026-Sep-04 22:10 17 18 45.28 -23 42 50.2 253.248122 24.047248 n.a. n.a. 1.026966737487 -0.1139416 0.09552958142153 0.7803508 98.5512 /T 76.1708 175.5/ 42.5161 n.a. n.a. 2.4886597 89.982658 15.192633 2026-Sep-04 22:20 17 18 47.10 -23 42 50.2 252.547966 21.852247 n.a. n.a. 1.026966280637 -0.1138717 0.09553272135840 0.7851390 98.5513 /T 76.1705 175.5/ 42.4272 n.a. n.a. 2.5042370 89.938998 15.190376 2026-Sep-04 22:30 17 18 48.93 -23 42 50.3 251.828134 19.665822 n.a. n.a. 1.026965824068 -0.1138018 0.09553587906352 0.7892089 98.5515 /T 76.1702 175.5/ 42.3397 n.a. n.a. 2.5199921 89.902108 15.173946 2026-Sep-04 22:40 17 18 50.77 -23 42 50.3 251.087492 17.488566 n.a. n.a. 1.026965367778 -0.1137319 0.09553905164036 0.7925531 98.5516 /T 76.1699 175.4/ 42.2535 n.a. n.a. 2.5358945 89.871934 15.143641 2026-Sep-04 22:50 17 18 52.62 -23 42 50.3 250.324812 15.321118 n.a. n.a. 1.026964911769 -0.1136621 0.09554223616512 0.7951654 98.5519 /T 76.1695 175.4/ 42.1687 n.a. n.a. 2.5519135 89.848404 15.099779 2026-Sep-04 23:00 17 18 54.49 -23 42 50.3 249.538777 13.164161 n.a. n.a. 1.026964456040 -0.1135922 0.09554542969234 0.7970411 98.5521 /T 76.1690 175.4/ 42.0853 n.a. n.a. 2.5680186 89.831434 15.042690 2026-Sep-04 23:10 17 18 56.36 -23 42 50.3 248.727968 11.018433 n.a. n.a. 1.026964000591 -0.1135223 0.09554862926041 0.7981770 98.5524 /T 76.1685 175.4/ 42.0032 n.a. n.a. 2.5841790 89.820929 14.972720 2026-Sep-04 23:20 17 18 58.25 -23 42 50.3 247.890863 8.884729 n.a. n.a. 1.026963545422 -0.1134524 0.09555183189731 0.7985711 98.5528 /T 76.1680 175.3/ 41.9226 n.a. n.a. 2.6003638 89.816781 14.890223 2026-Sep-04 23:30 17 19 00.15 -23 42 50.3 247.025830 6.763904 n.a. n.a. 1.026963090534 -0.1133825 0.09555503462620 0.7982229 98.5532 /T 76.1674 175.3/ 41.8434 n.a. n.a. 2.6165425 89.818874 14.795564 2026-Sep-04 23:40 17 19 02.06 -23 42 50.3 246.131117 4.656886 n.a. n.a. 1.026962635926 -0.1133127 0.09555823447104 0.7971333 98.5537 /T 76.1668 175.3/ 41.7656 n.a. n.a. 2.6326844 89.827082 14.689115 2026-Sep-04 23:50 17 19 03.98 -23 42 50.3 245.204851 2.564675 n.a. n.a. 1.026962181599 -0.1132428 0.09556142846238 0.7953048 98.5542 /T 76.1661 175.2/ 41.6892 n.a. n.a. 2.6487591 89.841273 14.571256 2026-Sep-05 00:00 17 19 05.92 -23 42 50.3 244.245022 0.488357 n.a. n.a. 1.026961727551 -0.1131729 0.09556461364290 0.7927409 98.5547 /T 76.1654 175.2/ 41.6142 n.a. n.a. 2.6647364 89.861305 14.442370 $$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 ***************************************************************************************************************************************************************************************************************************************************