API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Nov 03, 2024 MMS-1 Spacecraft / (Earth) -140482 https://www.nasa.gov/mission_pages/mms/index.html MMS 1 Magnetospheric Multiscale (MMS) mission: the first 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 Mon Nov 4 03:20:31 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: MMS-1 (spacecraft) (-140482) {source: MMS-1} Center body name: Earth (399) {source: DE441} Center-site name: El Berrueco ******************************************************************************* 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 : 356.4134, 40.8833094, 1.06361 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 356.4134,4829.88693,4153.33056 {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.241101.p250128 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-NOV-01. PREDICTS-> 2025-JAN-27 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 2024-Oct-31 00:00 01 18 22.74 +22 24 03.0 221.677284 67.102202 n.a. n.a. 0.993062305822 -3.7450699 0.00020790779680 -3.4916715 162.9010 /T 17.0952 167.5/ 2.0496 n.a. n.a. 768.49972 31.052527 -61.05043 2024-Oct-31 00:10 01 23 33.29 +24 20 59.2 226.998958 68.055634 n.a. n.a. 0.993046944763 -3.9212756 0.00019372719822 -3.5833956 162.9357 /T 17.0609 165.5/ 2.0248 n.a. n.a. 878.50839 31.742959 -60.13850 2024-Oct-31 00:20 01 29 44.56 +26 34 32.6 232.731252 69.211561 n.a. n.a. 0.993030833862 -4.1197468 0.00017916740674 -3.6807677 162.6213 /T 17.3755 163.1/ 2.0002 n.a. n.a. 1019.0003 32.558757 -59.05285 2024-Oct-31 00:30 01 37 19.30 +29 09 15.5 239.163325 70.648624 n.a. n.a. 0.993013874780 -4.3451997 0.00016420825290 -3.7823294 161.7962 /T 18.2008 160.3/ 1.9759 n.a. n.a. 1203.1254 33.559683 -57.73084 2024-Oct-31 00:40 01 46 54.09 +32 11 30.6 246.874875 72.462061 n.a. n.a. 0.992995947732 -4.6036774 0.00014883915242 -3.8845046 160.2478 /T 19.7493 156.9/ 1.9518 n.a. n.a. 1452.0350 34.850411 -56.07671 2024-Oct-31 00:50 01 59 32.08 +35 50 24.7 257.165454 74.743659 n.a. n.a. 0.992976905429 -4.9029248 0.00013307173341 -3.9792275 157.6977 /T 22.2994 152.6/ 1.9279 n.a. n.a. 1801.3048 36.626422 -53.93792 2024-Oct-31 01:00 02 17 12.63 +40 18 57.9 273.373951 77.454399 n.a. n.a. 0.992956565537 -5.2527302 0.00011696713752 -4.0485565 153.7592 /T 26.2379 147.2/ 1.9044 n.a. n.a. 2313.6614 39.285359 -51.05980 2024-Oct-31 01:10 02 44 10.05 +45 54 17.7 304.021552 79.724559 n.a. n.a. 0.992934702365 -5.6648625 0.00010069764987 -4.0517927 147.8355 /L 32.1615 139.9/ 1.8811 n.a. n.a. 3104.3001 43.732969 -46.99590 2024-Oct-31 01:20 e 03 30 53.46 +52 48 39.6 351.214690 77.808709 n.a. n.a. 0.992911041458 -6.1513485 0.00008469223450 -3.8936623 138.9114 /L 41.0855 129.9/ 1.8580 n.a. n.a. 4385.2217 52.341756 -40.93290 2024-Oct-31 01:30 t 05 06 00.81 +59 57 32.5 24.540010 67.787264 n.a. n.a. 0.992885270283 -6.7170798 0.00006998465542 -3.3508571 125.2260 /L 54.7708 115.2/ 1.8353 n.a. n.a. 6484.5369 71.838383 -31.41543 2024-Oct-31 01:40 08 04 23.66 +59 40 12.5 42.014890 48.920167 n.a. n.a. 0.992857107560 -7.3348638 0.00005892909423 -1.9839221 104.3118 /L 75.6849 93.4/ 1.8128 n.a. n.a. 9434.0451 110.07259 -16.44570 2024-Oct-31 01:50 10 39 13.81 +41 59 40.3 52.946652 21.972075 n.a. n.a. 0.992826550592 -7.8757901 0.00005563207464 0.4855152 75.8796 /L 104.1170 64.1/ 1.7907 n.a. n.a. 11358.639 139.59901 3.6367354 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< 2024-Oct-31 17:20 C 22 21 23.50 -37 57 01.2 150.267716 3.668661 n.a. n.a. 0.992833177344 0.4371283 0.00086934355829 1.0628479 102.8155 /T 77.1358 109.7/ 0.7200 n.a. n.a. 42.307918 20.779283 67.300182 2024-Oct-31 17:30 C 22 21 35.65 -37 50 25.6 151.943159 4.663634 n.a. n.a. 0.992834914883 0.4337367 0.00087359586290 1.0594560 102.8987 /T 77.0523 109.8/ 0.7096 n.a. n.a. 42.212977 19.347650 67.181024 2024-Oct-31 17:40 N 22 21 46.94 -37 43 47.0 153.653656 5.613528 n.a. n.a. 0.992836638847 0.4303420 0.00087783556173 1.0565413 102.9800 /T 76.9708 109.8/ 0.6991 n.a. n.a. 42.180413 17.986580 67.040904 2024-Oct-31 17:50 N 22 21 57.44 -37 37 05.5 155.398738 6.516364 n.a. n.a. 0.992838349227 0.4269449 0.00088206453208 1.0540856 103.0595 /T 76.8911 109.8/ 0.6886 n.a. n.a. 42.204744 16.702233 66.881814 2024-Oct-31 18:00 N 22 22 07.19 -37 30 20.8 157.177758 7.370176 n.a. n.a. 0.992840046013 0.4235458 0.00088628457728 1.0520701 103.1373 /T 76.8130 109.8/ 0.6779 n.a. n.a. 42.280478 15.499618 66.705852 2024-Oct-31 18:10 N 22 22 16.27 -37 23 32.8 158.989881 8.173025 n.a. n.a. 0.992841729199 0.4201454 0.00089049742356 1.0504753 103.2137 /T 76.7364 109.9/ 0.6672 n.a. n.a. 42.402191 14.382616 66.515168 2024-Oct-31 18:20 A 22 22 24.71 -37 16 41.5 160.834072 8.923012 n.a. n.a. 0.992843398782 0.4167442 0.00089470471730 1.0492809 103.2888 /T 76.6612 109.9/ 0.6564 n.a. n.a. 42.564587 13.354025 66.311909 2024-Oct-31 18:30 A 22 22 32.58 -37 09 46.7 162.709092 9.618290 n.a. n.a. 0.992845054758 0.4133427 0.00089890802236 1.0484659 103.3627 /T 76.5870 109.9/ 0.6455 n.a. n.a. 42.762563 12.415651 66.098177 2024-Oct-31 18:40 A 22 22 39.94 -37 02 48.4 164.613490 10.257085 n.a. n.a. 0.992846697129 0.4099415 0.00090310881742 1.0480089 103.4356 /T 76.5138 109.9/ 0.6345 n.a. n.a. 42.991254 11.568394 65.875990 2024-Oct-31 18:50 22 22 46.84 -36 55 46.4 166.545603 10.837704 n.a. n.a. 0.992848325897 0.4065412 0.00090730849372 1.0478878 103.5078 /T 76.4415 109.9/ 0.6235 n.a. n.a. 43.246067 10.812363 65.647247 2024-Oct-31 19:00 22 22 53.32 -36 48 40.9 168.503558 11.358556 n.a. n.a. 0.992849941066 0.4031421 0.00091150835268 1.0480799 103.5793 /T 76.3698 109.9/ 0.6125 n.a. n.a. 43.522710 10.146985 65.413706 2024-Oct-31 19:10 22 22 59.46 -36 41 31.6 170.485277 11.818165 n.a. n.a. 0.992851542643 0.3997448 0.00091570960397 1.0485621 103.6502 /T 76.2986 109.9/ 0.6014 n.a. n.a. 43.817210 9.5711111 65.176962 2024-Oct-31 19:20 22 23 05.30 -36 34 18.7 172.488488 12.215188 n.a. n.a. 0.992853130636 0.3963498 0.00091991336350 1.0493108 103.7208 /T 76.2278 109.9/ 0.5902 n.a. n.a. 44.125921 9.0831197 64.938439 2024-Oct-31 19:30 22 23 10.88 -36 27 02.1 174.510739 12.548425 n.a. n.a. 0.992854705054 0.3929575 0.00092412065189 1.0503021 103.7912 /T 76.1572 109.9/ 0.5791 n.a. n.a. 44.445528 8.6810111 64.699382 2024-Oct-31 19:40 22 23 16.28 -36 19 41.9 176.549416 12.816837 n.a. n.a. 0.992856265911 0.3895684 0.00092833239279 1.0515116 103.8616 /T 76.0866 109.9/ 0.5679 n.a. n.a. 44.773046 8.3624897 64.460851 2024-Oct-31 19:50 22 23 21.53 -36 12 18.1 178.601769 13.019555 n.a. n.a. 0.992857813219 0.3861829 0.00093254941171 1.0529148 103.9319 /T 76.0160 110.0/ 0.5567 n.a. n.a. 45.105811 8.1250372 64.223727 2024-Oct-31 20:00 t 22 23 26.68 -36 04 50.8 180.664932 13.155893 n.a. n.a. 0.992859346993 0.3828013 0.00093677243493 1.0544866 104.0025 /T 75.9452 110.0/ 0.5455 n.a. n.a. 45.441470 7.9659740 63.988718 2024-Oct-31 20:10 22 23 31.78 -35 57 19.9 182.735959 13.225351 n.a. n.a. 0.992860867252 0.3794241 0.00094100208850 1.0562022 104.0735 /T 75.8740 110.0/ 0.5343 n.a. n.a. 45.777969 7.8825110 63.756361 2024-Oct-31 20:20 e 22 23 36.89 -35 49 45.7 184.811851 13.227627 n.a. n.a. 0.992862374012 0.3760516 0.00094523889774 1.0580363 104.1449 /T 75.8024 110.0/ 0.5231 n.a. n.a. 46.113537 7.8717916 63.527036 2024-Oct-31 20:30 22 23 42.04 -35 42 08.2 186.889590 13.162616 n.a. n.a. 0.992863867294 0.3726842 0.00094948328667 1.0599636 104.2168 /T 75.7302 110.0/ 0.5119 n.a. n.a. 46.446667 7.9309254 63.300974 2024-Oct-31 20:40 22 23 47.29 -35 34 27.5 188.966175 13.030412 n.a. n.a. 0.992865347120 0.3693222 0.00095373557784 1.0619588 104.2895 /T 75.6574 110.0/ 0.5008 n.a. n.a. 46.776105 8.0570146 63.078269 2024-Oct-31 20:50 22 23 52.67 -35 26 43.7 191.038652 12.831306 n.a. n.a. 0.992866813510 0.3659659 0.00095799599228 1.0639966 104.3630 /T 75.5837 110.0/ 0.4897 n.a. n.a. 47.100825 8.2471736 62.858891 2024-Oct-31 21:00 22 23 58.22 -35 18 57.0 193.104151 12.565780 n.a. n.a. 0.992868266488 0.3626155 0.00096226464974 1.0660518 104.4374 /T 75.5090 110.0/ 0.4786 n.a. n.a. 47.420014 8.4985441 62.642696 2024-Oct-31 21:10 22 24 04.00 -35 11 07.5 195.159913 12.234504 n.a. n.a. 0.992869706080 0.3592714 0.00096654156911 1.0680993 104.5128 /T 75.4334 110.0/ 0.4676 n.a. n.a. 47.733053 8.8083051 62.429440 2024-Oct-31 21:20 22 24 10.03 -35 03 15.4 197.203319 11.838322 n.a. n.a. 0.992871132310 0.3559336 0.00097082666903 1.0701143 104.5893 /T 75.3567 110.0/ 0.4567 n.a. n.a. 48.039501 9.1736795 62.218790 2024-Oct-31 21:30 22 24 16.36 -34 55 20.8 199.231918 11.378244 n.a. n.a. 0.992872545204 0.3526024 0.00097511976880 1.0720721 104.6670 /T 75.2787 110.0/ 0.4458 n.a. n.a. 48.339074 9.5919385 62.010333 2024-Oct-31 21:40 22 24 23.02 -34 47 23.9 201.243440 10.855431 n.a. n.a. 0.992873944790 0.3492781 0.00097942058939 1.0739484 104.7460 /T 75.1995 110.0/ 0.4350 n.a. n.a. 48.631627 10.060403 61.803591 2024-Oct-31 21:50 22 24 30.04 -34 39 24.9 203.235822 10.271185 n.a. n.a. 0.992875331095 0.3459606 0.00098372875474 1.0757191 104.8264 /T 75.1189 110.0/ 0.4243 n.a. n.a. 48.917141 10.576443 61.598027 2024-Oct-31 22:00 22 24 37.46 -34 31 24.0 205.207216 9.626928 n.a. n.a. 0.992876704146 0.3426502 0.00098804379323 1.0773605 104.9083 /T 75.0368 110.0/ 0.4136 n.a. n.a. 49.195703 11.137480 61.393059 2024-Oct-31 22:10 22 24 45.31 -34 23 21.3 207.155996 8.924199 n.a. n.a. 0.992878064096 0.3394066 0.00099236522279 1.0788894 104.9917 /T 74.9532 110.0/ 0.4031 n.a. n.a. 49.471914 11.743029 61.186792 2024-Oct-31 22:20 22 24 53.62 -34 15 17.0 209.080767 8.164627 n.a. n.a. 0.992879411065 0.3361568 0.00099669243795 1.0802307 105.0767 /T 74.8680 110.0/ 0.3927 n.a. n.a. 49.740678 12.387967 60.980029 2024-Oct-31 22:30 22 25 02.42 -34 07 11.4 210.980366 7.349908 n.a. n.a. 0.992880745021 0.3328985 0.00100102463862 1.0813613 105.1633 /T 74.7811 110.0/ 0.3824 n.a. n.a. 50.002140 13.069832 60.772152 2024-Oct-31 22:40 22 25 11.73 -33 59 04.6 212.853857 6.481799 n.a. n.a. 0.992882065930 0.3296311 0.00100536093493 1.0822594 105.2517 /T 74.6925 110.0/ 0.3722 n.a. n.a. 50.256595 13.786264 60.562501 2024-Oct-31 22:50 22 25 21.57 -33 50 56.9 214.700526 5.562106 n.a. n.a. 0.992883373755 0.3263548 0.00100970035300 1.0829049 105.3418 /T 74.6022 110.0/ 0.3622 n.a. n.a. 50.504456 14.534990 60.350386 2024-Oct-31 23:00 22 25 31.97 -33 42 48.6 216.519874 4.592664 n.a. n.a. 0.992884668463 0.3230712 0.00101404184037 1.0832788 105.4337 /T 74.5101 110.0/ 0.3523 n.a. n.a. 50.746235 15.313805 60.135091 2024-Oct-31 23:10 22 25 42.95 -33 34 39.8 218.311607 3.575331 n.a. n.a. 0.992885950028 0.3197825 0.00101838427120 1.0833634 105.5275 /T 74.4161 110.0/ 0.3425 n.a. n.a. 50.982522 16.120557 59.915884 2024-Oct-31 23:20 22 25 54.53 -33 26 30.8 220.075626 2.511972 n.a. n.a. 0.992887218438 0.3164916 0.00102272645094 1.0831421 105.6231 /T 74.3203 110.1/ 0.3329 n.a. n.a. 51.213955 16.953136 59.692025 2024-Oct-31 23:30 22 26 06.71 -33 18 21.8 221.812015 1.404453 n.a. n.a. 0.992888473688 0.3132017 0.00102706712025 1.0825992 105.7206 /T 74.2225 110.1/ 0.3234 n.a. n.a. 51.441193 17.809456 59.462774 2024-Oct-31 23:40 22 26 19.53 -33 10 13.0 223.521030 0.254625 n.a. n.a. 0.992889715789 0.3099161 0.00103140495822 1.0817197 105.8200 /T 74.1229 110.1/ 0.3141 n.a. n.a. 51.664883 18.687445 59.227403 >..... 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 ***************************************************************************************************************************************************************************************************************************************************