API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Dec 10, 2024 MMS-2 Spacecraft / (Earth) -140483 https://www.nasa.gov/mission_pages/mms/index.html MMS 2 Magnetospheric Multiscale (MMS) mission: the second 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 Dec 12 03:57:37 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: MMS-2 (spacecraft) (-140483) {source: MMS-2} Center body name: Earth (399) {source: DE441} Center-site name: El Berrueco ******************************************************************************* Start time : A.D. 2024-Nov-30 00:00:00.0000 UT Stop time : A.D. 2024-Dec-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.241211.p250309 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-DEC-11. PREDICTS-> 2025-MAR-08 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-Nov-30 17:00 C 23 38 42.09 -14 06 33.8 143.027010 26.972324 n.a. n.a. 0.986354691889 0.0340869 0.00104392213872 -0.9668717 100.6383 /T 79.3019 106.4/ 0.5536 n.a. n.a. 31.850490 6.3182800 -67.42813 2024-Nov-30 17:10 C 23 38 44.27 -14 01 15.0 145.416269 28.155332 n.a. n.a. 0.986354823452 0.0325771 0.00104004741610 -0.9630612 100.6779 /T 79.2625 106.3/ 0.5454 n.a. n.a. 32.249279 5.1359320 -67.16962 2024-Nov-30 17:20 N 23 38 46.03 -13 55 51.4 147.873312 29.275662 n.a. n.a. 0.986354948914 0.0310428 0.00103618855312 -0.9589520 100.7166 /T 79.2241 106.3/ 0.5372 n.a. n.a. 32.673032 4.0492099 -66.88938 2024-Nov-30 17:30 N 23 38 47.41 -13 50 23.1 150.398276 30.329424 n.a. n.a. 0.986355068178 0.0294834 0.00103234669886 -0.9545686 100.7545 /T 79.1864 106.3/ 0.5288 n.a. n.a. 33.118691 3.0594980 -66.58973 2024-Nov-30 17:40 N 23 38 48.44 -13 44 50.0 152.990607 31.312696 n.a. n.a. 0.986355181140 0.0278985 0.00102852290342 -0.9499358 100.7916 /T 79.1496 106.3/ 0.5204 n.a. n.a. 33.583301 2.1674262 -66.27297 2024-Nov-30 17:50 N 23 38 49.14 -13 39 11.9 155.648976 32.221570 n.a. n.a. 0.986355287697 0.0262876 0.00102471811479 -0.9450797 100.8280 /T 79.1133 106.2/ 0.5120 n.a. n.a. 34.064038 1.3729775 -65.94130 2024-Nov-30 18:00 A 23 38 49.54 -13 33 28.9 158.371205 33.052205 n.a. n.a. 0.986355387744 0.0246500 0.00102093317595 -0.9400267 100.8640 /T 79.0776 106.2/ 0.5035 n.a. n.a. 34.558244 0.6755926 -65.59683 2024-Nov-30 18:10 A 23 38 49.68 -13 27 40.7 161.154204 33.800882 n.a. n.a. 0.986355481173 0.0229854 0.00101716882209 -0.9348039 100.8996 /T 79.0422 106.2/ 0.4950 n.a. n.a. 35.063450 0.0742666 -65.24159 2024-Nov-30 18:20 A 23 38 49.59 -13 21 47.5 163.993933 34.464069 n.a. n.a. 0.986355567873 0.0212930 0.00101342567827 -0.9294392 100.9349 /T 79.0071 106.2/ 0.4864 n.a. n.a. 35.577398 359.56764 -64.87750 2024-Nov-30 18:30 23 38 49.29 -13 15 49.2 166.885392 35.038489 n.a. n.a. 0.986355647734 0.0195724 0.00100970425702 -0.9239608 100.9701 /T 78.9721 106.1/ 0.4779 n.a. n.a. 36.098052 359.15406 -64.50638 2024-Nov-30 18:40 23 38 48.84 -13 09 45.6 169.822638 35.521190 n.a. n.a. 0.986355720638 0.0178230 0.00100600495646 -0.9183975 101.0053 /T 78.9372 106.1/ 0.4693 n.a. n.a. 36.623611 358.83169 -64.12993 2024-Nov-30 18:50 23 38 48.26 -13 03 36.8 172.798848 35.909606 n.a. n.a. 0.986355786471 0.0160441 0.00100232805851 -0.9127785 101.0406 /T 78.9021 106.0/ 0.4607 n.a. n.a. 37.152521 358.59850 -63.74974 2024-Nov-30 19:00 23 38 47.58 -12 57 22.7 175.806415 36.201629 n.a. n.a. 0.986355845112 0.0142351 0.00099867372739 -0.9071333 101.0762 /T 78.8667 106.0/ 0.4520 n.a. n.a. 37.683475 358.45237 -63.36731 2024-Nov-30 19:10 23 38 46.85 -12 51 03.3 178.837079 36.395655 n.a. n.a. 0.986355896439 0.0123954 0.00099504200842 -0.9014915 101.1121 /T 78.8310 106.0/ 0.4434 n.a. n.a. 38.215417 358.39108 -62.98401 2024-Nov-30 19:20 t 23 38 46.10 -12 44 38.7 181.882099 36.490633 n.a. n.a. 0.986355940328 0.0105243 0.00099143282710 -0.8958833 101.1486 /T 78.7947 105.9/ 0.4349 n.a. n.a. 38.747545 358.41238 -62.60111 2024-Nov-30 19:30 e 23 38 45.37 -12 38 08.6 184.932444 36.486095 n.a. n.a. 0.986355976651 0.0086211 0.00098784598838 -0.8903387 101.1857 /T 78.7578 105.9/ 0.4263 n.a. n.a. 39.279307 358.51397 -62.21978 2024-Nov-30 19:40 23 38 44.69 -12 31 33.3 187.979004 36.382168 n.a. n.a. 0.986356005278 0.0066851 0.00098428117641 -0.8848878 101.2237 /T 78.7201 105.9/ 0.4178 n.a. n.a. 39.810398 358.69350 -61.84109 2024-Nov-30 19:50 23 38 44.11 -12 24 52.5 191.012801 36.179574 n.a. n.a. 0.986356026075 0.0047156 0.00098073795424 -0.8795609 101.2626 /T 78.6814 105.8/ 0.4093 n.a. n.a. 40.340758 358.94864 -61.46602 2024-Nov-30 20:00 23 38 43.67 -12 18 06.5 194.025202 35.879613 n.a. n.a. 0.986356038907 0.0027118 0.00097721576423 -0.8743879 101.3025 /T 78.6416 105.8/ 0.4008 n.a. n.a. 40.870563 359.27701 -61.09543 2024-Nov-30 20:10 23 38 43.40 -12 11 15.1 197.008099 35.484126 n.a. n.a. 0.986356043635 0.0006729 0.00097371392829 -0.8693988 101.3437 /T 78.6006 105.7/ 0.3924 n.a. n.a. 41.400215 359.67621 -60.73012 2024-Nov-30 20:20 23 38 43.34 -12 04 18.4 199.954080 34.995454 n.a. n.a. 0.986356040115 -0.0014018 0.00097023164891 -0.8646233 101.3863 /T 78.5583 105.7/ 0.3841 n.a. n.a. 41.930341 0.1438131 -60.37078 2024-Nov-30 20:30 23 38 43.53 -11 57 16.4 202.856547 34.416378 n.a. n.a. 0.986356028203 -0.0035132 0.00096676800992 -0.8600907 101.4304 /T 78.5144 105.7/ 0.3758 n.a. n.a. 42.461771 0.6773382 -60.01803 2024-Nov-30 20:40 23 38 44.01 -11 50 09.2 205.709807 33.750058 n.a. n.a. 0.986356007750 -0.0056622 0.00096332197806 -0.8558302 101.4761 /T 78.4688 105.6/ 0.3677 n.a. n.a. 42.995537 1.2742601 -59.67242 2024-Nov-30 20:50 23 38 44.82 -11 42 56.7 208.509125 32.999962 n.a. n.a. 0.986355978602 -0.0078496 0.00095989240441 -0.8518702 101.5237 /T 78.4215 105.6/ 0.3596 n.a. n.a. 43.532848 1.9319869 -59.33442 2024-Nov-30 21:00 23 38 46.00 -11 35 38.9 211.250735 32.169801 n.a. n.a. 0.986355940604 -0.0100764 0.00095647802630 -0.8482389 101.5731 /T 78.3723 105.6/ 0.3516 n.a. n.a. 44.075086 2.6478512 -59.00442 2024-Nov-30 21:10 23 38 47.58 -11 28 16.0 213.931822 31.263462 n.a. n.a. 0.986355893596 -0.0123435 0.00095307746954 -0.8449639 101.6247 /T 78.3210 105.5/ 0.3437 n.a. n.a. 44.623780 3.4190995 -58.68278 2024-Nov-30 21:20 23 38 49.61 -11 20 47.9 216.550479 30.284945 n.a. n.a. 0.986355837414 -0.0146518 0.00094968925058 -0.8420720 101.6784 /T 78.2674 105.5/ 0.3359 n.a. n.a. 45.180594 4.2428832 -58.36978 2024-Nov-30 21:30 23 38 52.11 -11 13 14.8 219.105644 29.238307 n.a. n.a. 0.986355771891 -0.0170025 0.00094631177937 -0.8395894 101.7345 /T 78.2116 105.5/ 0.3283 n.a. n.a. 45.747304 5.1162511 -58.06567 2024-Nov-30 21:40 23 38 55.14 -11 05 36.5 221.597017 28.127615 n.a. n.a. 0.986355696854 -0.0193964 0.00094294336209 -0.8375417 101.7930 /T 78.1532 105.4/ 0.3208 n.a. n.a. 46.325781 6.0361446 -57.77064 2024-Nov-30 21:50 23 38 58.72 -10 57 53.3 224.024981 26.956899 n.a. n.a. 0.986355612128 -0.0218348 0.00093958220425 -0.8359536 101.8542 /T 78.0923 105.4/ 0.3134 n.a. n.a. 46.917967 6.9993953 -57.48487 2024-Nov-30 22:00 23 39 02.90 -10 50 05.1 226.390509 25.730123 n.a. n.a. 0.986355517531 -0.0243187 0.00093622641405 -0.8348488 101.9181 /T 78.0286 105.4/ 0.3062 n.a. n.a. 47.525852 8.0027265 -57.20850 2024-Nov-30 22:10 23 39 07.69 -10 42 12.0 228.695073 24.451118 n.a. n.a. 0.986355411924 -0.0273197 0.00093287147731 -0.8354933 101.9848 /T 77.9620 105.4/ 0.2991 n.a. n.a. 48.128555 9.0337861 -56.99318 2024-Nov-30 22:20 23 39 13.14 -10 34 14.3 230.940565 23.123605 n.a. n.a. 0.986355294290 -0.0303105 0.00092951315385 -0.8365044 102.0545 /T 77.8926 105.3/ 0.2922 n.a. n.a. 48.753838 10.100127 -56.78101 2024-Nov-30 22:30 23 39 19.28 -10 26 11.9 233.129224 21.751208 n.a. n.a. 0.986355164726 -0.0332652 0.00092615008478 -0.8378323 102.1272 /T 77.8200 105.3/ 0.2854 n.a. n.a. 49.405044 11.198481 -56.56907 2024-Nov-30 22:40 23 39 26.14 -10 18 04.9 235.263571 20.337415 n.a. n.a. 0.986355023415 -0.0361659 0.00092278106384 -0.8394481 102.2031 /T 77.7443 105.3/ 0.2788 n.a. n.a. 50.085088 12.325248 -56.35534 2024-Nov-30 22:50 23 39 33.76 -10 09 53.2 237.346339 18.885567 n.a. n.a. 0.986354870597 -0.0390026 0.00091940495966 -0.8413436 102.2824 /T 77.6652 105.3/ 0.2724 n.a. n.a. 50.796430 13.476558 -56.13876 2024-Nov-30 23:00 23 39 42.16 -10 01 36.8 239.380427 17.398852 n.a. n.a. 0.986354706533 -0.0417739 0.00091602063063 -0.8435320 102.3652 /T 77.5827 105.3/ 0.2662 n.a. n.a. 51.541034 14.648342 -55.91926 2024-Nov-30 23:10 23 39 51.39 -09 53 15.8 241.368851 15.880312 n.a. n.a. 0.986354531474 -0.0444868 0.00091262683901 -0.8460477 102.4515 /T 77.4966 105.3/ 0.2602 n.a. n.a. 52.320345 15.836405 -55.69773 2024-Nov-30 23:20 23 40 01.48 -09 44 50.0 243.314711 14.332840 n.a. n.a. 0.986354345628 -0.0471560 0.00090922217079 -0.8489438 102.5415 /T 77.4068 105.3/ 0.2543 n.a. n.a. 53.135315 17.036517 -55.47595 2024-Nov-30 23:30 23 40 12.45 -09 36 19.5 245.221159 12.759187 n.a. n.a. 0.986354149129 -0.0498025 0.00090580496667 -0.8522887 102.6353 /T 77.3132 105.3/ 0.2487 n.a. n.a. 53.986442 18.244496 -55.25642 2024-Nov-30 23:40 23 40 24.32 -09 27 44.4 247.091374 11.161969 n.a. n.a. 0.986353942017 -0.0524525 0.00090237326975 -0.8561616 102.7331 /T 77.2156 105.3/ 0.2433 n.a. n.a. 54.873850 19.456287 -55.04214 2024-Nov-30 23:50 23 40 37.14 -09 19 04.6 248.928549 9.543671 n.a. n.a. 0.986353724220 -0.0551349 0.00089892479244 -0.8606471 102.8349 /T 77.1140 105.3/ 0.2380 n.a. n.a. 55.797373 20.668032 -54.83641 2024-Dec-01 00:00 23 40 50.92 -09 10 20.2 250.735874 7.906661 n.a. n.a. 0.986353495549 -0.0578795 0.00089545690519 -0.8658301 102.9408 /T 77.0083 105.3/ 0.2330 n.a. n.a. 56.756662 21.876114 -54.64257 $$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 ***************************************************************************************************************************************************************************************************************************************************