API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Nov 07, 2024 MMS-3 Spacecraft / (Earth) -140484 https://www.nasa.gov/mission_pages/mms/index.html MMS 3 Magnetospheric Multiscale (MMS) mission: the third of four identically instrumented space physics spacecraft studying the Earth's magnetosphere. Octagonal in shape; 2.5-m wide, 1.2-m high, spinning at 3 rpm during science operations. Eight deployable booms: four 60-meter wire booms, two 12.5 meter booms, two 5-m booms. Mass: 1250 kg; 318 W power generation; S-band communications. NOTE: The spacecraft may be maneuvered frequently. Therefore, the JSpOC TLE-based trajectory provided here may at times depart from the actual trajectory. This can happen because TLEs do not model thruster firings; the TLE trajectory solutions must be reinitialized after each event. Launched: 2015-Mar-13 02:44 UTC (Atlas V, Cape Canaveral, USA) ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Thu Nov 7 14:51:25 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: MMS-3 (spacecraft) (-140484) {source: MMS-3} Center body name: Earth (399) {source: DE441} Center-site name: iTelescope Obs., Siding Spring ******************************************************************************* Start time : A.D. 2024-Oct-31 00:00:00.0000 UT Stop time : A.D. 2024-Nov-01 00:00:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 149.0644, -31.2733577, 1.16499 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 149.0644,5457.31536,-3292.4397 {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.241107.p250203 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-NOV-07. PREDICTS-> 2025-FEB-02 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation ( 0.0deg=YES),Airmass (>38.000=NO), Daylight (YES) Table cut-offs 2: Solar elongation ( 12.0,180.0=YES),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) *************************************************************************************************************************************************************************************************************************************************** Date__(UT)__HR:MN R.A._____(ICRF)_____DEC Azi____(a-app)___Elev APmag S-brt r rdot delta deldot S-O-T /r S-T-O T-O-M/MN_Illu% RA_3sigma DEC_3sigma Sky_motion Sky_mot_PA RelVel-ANG *************************************************************************************************************************************************************************************************************************************************** $$SOE >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2024-Oct-31 08:40 Ct 21 13 52.54 -46 57 40.8 180.820246 74.409168 n.a. n.a. 0.992718837475 0.5766068 0.00047511992537 2.2070154 88.1082 /T 91.8649 99.2/ 1.4269 n.a. n.a. 156.73526 35.801929 67.811047 2024-Oct-31 08:50 C 21 15 19.84 -46 36 44.8 186.422830 74.642253 n.a. n.a. 0.992721140962 0.5769390 0.00048392445775 2.1862351 88.4514 /T 91.5211 99.5/ 1.4088 n.a. n.a. 152.75139 35.121104 67.769438 2024-Oct-31 09:00 Ne 21 16 43.07 -46 16 09.7 192.212751 74.679870 n.a. n.a. 0.992723445098 0.5769417 0.00049264801917 2.1665875 88.7843 /T 91.1876 99.8/ 1.3906 n.a. n.a. 149.08885 34.489007 67.716730 2024-Oct-31 09:10 N 21 18 02.61 -45 55 54.5 198.016235 74.514617 n.a. n.a. 0.992725748625 0.5766458 0.00050129499756 2.1479970 89.1078 /T 90.8636 100.1/ 1.3722 n.a. n.a. 145.71568 33.906427 67.653692 2024-Oct-31 09:20 N 21 19 18.83 -45 35 58.1 203.658741 74.147541 n.a. n.a. 0.992728050405 0.5760791 0.00050986948518 2.1303916 89.4227 /T 90.5483 100.3/ 1.3538 n.a. n.a. 142.60335 33.373958 67.581076 2024-Oct-31 09:30 A 21 20 32.03 -45 16 19.7 208.990827 73.587554 n.a. n.a. 0.992730349406 0.5752662 0.00051837529253 2.1137026 89.7297 /T 90.2408 100.6/ 1.3353 n.a. n.a. 139.72630 32.891994 67.499601 2024-Oct-31 09:40 A 21 21 42.51 -44 56 58.4 213.905370 72.849569 n.a. n.a. 0.992732644687 0.5742294 0.00052681596099 2.0978646 90.0296 /T 89.9404 100.8/ 1.3167 n.a. n.a. 137.06167 32.460722 67.409956 2024-Oct-31 09:50 A 21 22 50.53 -44 37 53.4 218.342272 71.952033 n.a. n.a. 0.992734935393 0.5729887 0.00053519477451 2.0828146 90.3229 /T 89.6466 101.1/ 1.2980 n.a. n.a. 134.58895 32.080128 67.312792 2024-Oct-31 10:00 21 23 56.34 -44 19 04.0 222.282836 70.914617 n.a. n.a. 0.992737220744 0.5715619 0.00054351477034 2.0684924 90.6104 /T 89.3587 101.3/ 1.2792 n.a. n.a. 132.28974 31.750007 67.208717 2024-Oct-31 10:10 21 25 00.15 -44 00 29.8 225.738934 69.756479 n.a. n.a. 0.992739500029 0.5699653 0.00055177874897 2.0548402 90.8924 /T 89.0761 101.6/ 1.2604 n.a. n.a. 130.14753 31.469966 67.098296 2024-Oct-31 10:20 21 26 02.19 -43 42 10.0 228.741593 68.495210 n.a. n.a. 0.992741772600 0.5682136 0.00055998928346 2.0418023 91.1696 /T 88.7985 101.8/ 1.2416 n.a. n.a. 128.14750 31.239441 66.982045 2024-Oct-31 10:30 21 27 02.62 -43 24 04.4 231.331607 67.146355 n.a. n.a. 0.992744037862 0.5663200 0.00056814872807 2.0293253 91.4424 /T 88.5252 102.0/ 1.2227 n.a. n.a. 126.27635 31.057710 66.860433 2024-Oct-31 10:40 21 28 01.62 -43 06 12.4 233.552947 65.723316 n.a. n.a. 0.992746295272 0.5642965 0.00057625922651 2.0173576 91.7112 /T 88.2560 102.2/ 1.2038 n.a. n.a. 124.52212 30.923907 66.733877 2024-Oct-31 10:50 21 28 59.36 -42 48 33.7 235.448666 64.237481 n.a. n.a. 0.992748544334 0.5621542 0.00058432271970 2.0058496 91.9764 /T 87.9903 102.4/ 1.1849 n.a. n.a. 122.87410 30.837036 66.602744 2024-Oct-31 11:00 21 29 55.98 -42 31 08.0 237.058693 62.698447 n.a. n.a. 0.992750784592 0.5599030 0.00059234095313 1.9947534 92.2384 /T 87.7278 102.6/ 1.1660 n.a. n.a. 121.32266 30.795986 66.467354 2024-Oct-31 11:10 21 30 51.61 -42 13 54.9 238.418846 61.114286 n.a. n.a. 0.992753015629 0.5575520 0.00060031548402 1.9840230 92.4976 /T 87.4682 102.8/ 1.1471 n.a. n.a. 119.85916 30.799547 66.327974 2024-Oct-31 11:20 21 31 46.37 -41 56 54.3 239.560595 59.491787 n.a. n.a. 0.992755237064 0.5551095 0.00060824768808 1.9736139 92.7542 /T 87.2111 103.0/ 1.1283 n.a. n.a. 118.47586 30.846422 66.184826 2024-Oct-31 11:30 21 32 40.38 -41 40 05.9 240.511231 57.836681 n.a. n.a. 0.992757448545 0.5525830 0.00061613876609 1.9634833 93.0085 /T 86.9564 103.2/ 1.1095 n.a. n.a. 117.16580 30.935238 66.038088 2024-Oct-31 11:40 21 33 33.75 -41 23 29.5 241.294234 56.153829 n.a. n.a. 0.992759649751 0.5499795 0.00062398975035 1.9535900 93.2608 /T 86.7036 103.4/ 1.0907 n.a. n.a. 115.92273 31.064561 65.887892 2024-Oct-31 11:50 21 34 26.57 -41 07 05.1 241.929710 54.447380 n.a. n.a. 0.992761840388 0.5473053 0.00063180151080 1.9438942 93.5114 /T 86.4526 103.5/ 1.0721 n.a. n.a. 114.74105 31.232907 65.734332 2024-Oct-31 12:00 21 35 18.92 -40 50 52.4 242.434834 52.720904 n.a. n.a. 0.992764020184 0.5445664 0.00063957476115 1.9343578 93.7604 /T 86.2031 103.7/ 1.0535 n.a. n.a. 113.61573 31.438749 65.577464 2024-Oct-31 12:10 21 36 10.89 -40 34 51.4 242.824263 50.977489 n.a. n.a. 0.992766188893 0.5417680 0.00064731006478 1.9249440 94.0081 /T 85.9550 103.9/ 1.0350 n.a. n.a. 112.54225 31.680527 65.417309 2024-Oct-31 12:20 21 37 02.55 -40 19 01.9 243.110506 49.219837 n.a. n.a. 0.992768346286 0.5389151 0.00065500784068 1.9156175 94.2546 /T 85.7081 104.1/ 1.0165 n.a. n.a. 111.51653 31.956659 65.253858 2024-Oct-31 12:30 21 37 53.97 -40 03 24.0 243.304243 47.450323 n.a. n.a. 0.992770492155 0.5360123 0.00066266836900 1.9063444 94.5001 /T 85.4621 104.2/ 0.9982 n.a. n.a. 110.53489 32.265545 65.087074 2024-Oct-31 12:40 21 38 45.21 -39 47 57.4 243.414602 45.671060 n.a. n.a. 0.992772626308 0.5330636 0.00067029179696 1.8970922 94.7448 /T 85.2170 104.4/ 0.9801 n.a. n.a. 109.59404 32.605576 64.916895 2024-Oct-31 12:50 21 39 36.32 -39 32 42.3 243.449389 43.883939 n.a. n.a. 0.992774748571 0.5300731 0.00067787814416 1.8878298 94.9888 /T 84.9726 104.6/ 0.9620 n.a. n.a. 108.69096 32.975139 64.743236 2024-Oct-31 13:00 21 40 27.36 -39 17 38.5 243.415286 42.090672 n.a. n.a. 0.992776858784 0.5270441 0.00068542730834 1.8785275 95.2322 /T 84.7287 104.7/ 0.9441 n.a. n.a. 107.82293 33.372620 64.565998 2024-Oct-31 13:10 21 41 18.37 -39 02 46.1 243.318015 40.292817 n.a. n.a. 0.992778956799 0.5239800 0.00069293907073 1.8691569 95.4752 /T 84.4853 104.9/ 0.9263 n.a. n.a. 106.98747 33.796414 64.385061 2024-Oct-31 13:20 21 42 09.40 -38 48 05.0 243.162475 38.491809 n.a. n.a. 0.992781042483 0.5208839 0.00070041310147 1.8596911 95.7178 /T 84.2423 105.1/ 0.9088 n.a. n.a. 106.18231 34.244925 64.200298 2024-Oct-31 13:30 21 43 00.47 -38 33 35.2 242.952859 36.688976 n.a. n.a. 0.992783115714 0.5177584 0.00070784896497 1.8501042 95.9601 /T 83.9996 105.2/ 0.8913 n.a. n.a. 105.40535 34.716574 64.011570 2024-Oct-31 13:40 21 43 51.62 -38 19 16.7 242.692751 34.885565 n.a. n.a. 0.992785176379 0.5146063 0.00071524612527 1.8403719 96.2022 /T 83.7571 105.4/ 0.8741 n.a. n.a. 104.65467 35.209798 63.818730 2024-Oct-31 13:50 21 44 42.88 -38 05 09.6 242.385204 33.082749 n.a. n.a. 0.992787224378 0.5114300 0.00072260395129 1.8304712 96.4442 /T 83.5147 105.5/ 0.8570 n.a. n.a. 103.92848 35.723057 63.621629 2024-Oct-31 14:00 21 45 34.27 -37 51 13.7 242.032815 31.281645 n.a. n.a. 0.992789259618 0.5082315 0.00072992172200 1.8203802 96.6860 /T 83.2725 105.7/ 0.8402 n.a. n.a. 103.22509 36.254835 63.420114 2024-Oct-31 14:10 21 46 25.83 -37 37 29.2 241.637788 29.483330 n.a. n.a. 0.992791282192 0.5051001 0.00073719890516 1.8102127 96.9278 /T 83.0302 105.9/ 0.8235 n.a. n.a. 102.55160 36.804047 63.213784 2024-Oct-31 14:20 21 47 17.56 -37 23 55.9 241.201973 27.688842 n.a. n.a. 0.992793292187 0.5019460 0.00074443485150 1.7998005 97.1697 /T 82.7880 106.0/ 0.8071 n.a. n.a. 101.89703 37.368735 63.002710 2024-Oct-31 14:30 21 48 09.48 -37 10 33.9 240.726894 25.899187 n.a. n.a. 0.992795289515 0.4987703 0.00075162853997 1.7891249 97.4115 /T 82.5458 106.2/ 0.7908 n.a. n.a. 101.25995 37.947482 62.786735 2024-Oct-31 14:40 21 49 01.62 -36 57 23.2 240.213796 24.115354 n.a. n.a. 0.992797274093 0.4955744 0.00075877887860 1.7781689 97.6534 /T 82.3035 106.3/ 0.7748 n.a. n.a. 100.63905 38.538906 62.565709 2024-Oct-31 14:50 21 49 53.97 -36 44 23.8 239.663677 22.338318 n.a. n.a. 0.992799245844 0.4923594 0.00076588471001 1.7669169 97.8954 /T 82.0612 106.5/ 0.7590 n.a. n.a. 100.03303 39.141662 62.339488 2024-Oct-31 15:00 21 50 46.54 -36 31 35.8 239.077311 20.569051 n.a. n.a. 0.992801204692 0.4891267 0.00077294481675 1.7553546 98.1374 /T 81.8188 106.7/ 0.7435 n.a. n.a. 99.440664 39.754444 62.107935 2024-Oct-31 15:10 21 51 39.34 -36 18 59.1 238.455273 18.808522 n.a. n.a. 0.992803150571 0.4858772 0.00077995792648 1.7434689 98.3794 /T 81.5763 106.8/ 0.7282 n.a. n.a. 98.860733 40.375989 61.870921 2024-Oct-31 15:20 21 52 32.37 -36 06 33.7 237.797955 17.057712 n.a. n.a. 0.992805083415 0.4826121 0.00078692271742 1.7312481 98.6215 /T 81.3339 107.0/ 0.7132 n.a. n.a. 98.292061 41.005070 61.628330 2024-Oct-31 15:30 21 53 25.63 -35 54 19.7 237.105580 15.317610 n.a. n.a. 0.992807003164 0.4793322 0.00079383782340 1.7186818 98.8636 /T 81.0914 107.1/ 0.6984 n.a. n.a. 97.733489 41.640507 61.380053 2024-Oct-31 15:40 21 54 19.13 -35 42 17.1 236.378221 13.589224 n.a. n.a. 0.992808909762 0.4760386 0.00080070183900 1.7057609 99.1057 /T 80.8489 107.3/ 0.6838 n.a. n.a. 97.183877 42.281162 61.125994 2024-Oct-31 15:50 21 55 12.84 -35 30 25.8 235.615810 11.873584 n.a. n.a. 0.992810803155 0.4727322 0.00080751332473 1.6924774 99.3478 /T 80.6065 107.4/ 0.6696 n.a. n.a. 96.642097 42.925940 60.866069 2024-Oct-31 16:00 21 56 06.79 -35 18 45.9 234.818149 10.171747 n.a. n.a. 0.992812683294 0.4694137 0.00081427081192 1.6788247 99.5898 /T 80.3641 107.6/ 0.6555 n.a. n.a. 96.107036 43.573790 60.600207 2024-Oct-31 16:10 21 57 00.94 -35 07 17.3 233.984920 8.484803 n.a. n.a. 0.992814550133 0.4660842 0.00082097280777 1.6647975 99.8317 /T 80.1219 107.8/ 0.6418 n.a. n.a. 95.577590 44.223707 60.328346 2024-Oct-31 16:20 21 57 55.31 -34 56 00.0 233.115695 6.813877 n.a. n.a. 0.992816403629 0.4627443 0.00082761780007 1.6503914 100.0735 /T 79.8798 107.9/ 0.6283 n.a. n.a. 95.052661 44.874729 60.050442 2024-Oct-31 16:30 21 58 49.87 -34 44 54.1 232.209942 5.160138 n.a. n.a. 0.992818243744 0.4593950 0.00083420426218 1.6356034 100.3151 /T 79.6378 108.1/ 0.6151 n.a. n.a. 94.531164 45.525939 59.766459 2024-Oct-31 16:40 21 59 44.62 -34 33 59.4 231.267036 3.524799 n.a. n.a. 0.992820070441 0.4560368 0.00084073065752 1.6204317 100.5564 /T 79.3962 108.2/ 0.6022 n.a. n.a. 94.012018 46.176465 59.476378 2024-Oct-31 16:50 22 00 39.55 -34 23 16.0 230.286265 1.909125 n.a. n.a. 0.992821883686 0.4526707 0.00084719544436 1.6048755 100.7975 /T 79.1548 108.4/ 0.5895 n.a. n.a. 93.494152 46.825478 59.180189 2024-Oct-31 17:00 22 01 34.64 -34 12 43.9 229.266841 0.314436 n.a. n.a. 0.992823683450 0.4492973 0.00085359708028 1.5889352 101.0382 /T 78.9138 108.5/ 0.5771 n.a. n.a. 92.976503 47.472189 58.877900 >..... 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/hrzn_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ***************************************************************************************************************************************************************************************************************************************************