API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Dec 10, 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 Dec 12 02:06:12 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: MMS-3 (spacecraft) (-140484) {source: MMS-3} 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 47.52 -14 04 44.5 142.989270 26.988870 n.a. n.a. 0.986355088810 0.0336259 0.00104288025130 -0.9693268 100.6713 /T 79.2690 106.4/ 0.5536 n.a. n.a. 31.920736 6.3640220 -67.45516 2024-Nov-30 17:10 C 23 38 49.72 -13 59 25.0 145.378501 28.172997 n.a. n.a. 0.986355218514 0.0321087 0.00103899564262 -0.9655315 100.7111 /T 79.2294 106.4/ 0.5454 n.a. n.a. 32.319851 5.1822977 -67.19804 2024-Nov-30 17:20 N 23 38 51.51 -13 54 00.7 147.835593 29.294485 n.a. n.a. 0.986355342088 0.0305668 0.00103512683220 -0.9614377 100.7500 /T 79.1908 106.4/ 0.5372 n.a. n.a. 32.743994 4.0959809 -66.91923 2024-Nov-30 17:30 N 23 38 52.91 -13 48 31.7 150.360693 30.349440 n.a. n.a. 0.986355459431 0.0289997 0.00103127496873 -0.9570697 100.7880 /T 79.1530 106.3/ 0.5288 n.a. n.a. 33.190115 3.1064699 -66.62107 2024-Nov-30 17:40 N 23 38 53.96 -13 42 57.9 152.953259 31.333937 n.a. n.a. 0.986355570442 0.0274069 0.00102744110186 -0.9524525 100.8252 /T 79.1160 106.3/ 0.5204 n.a. n.a. 33.655257 2.2144100 -66.30583 2024-Nov-30 17:50 N 23 38 54.68 -13 37 19.1 155.611974 32.244064 n.a. n.a. 0.986355675017 0.0257879 0.00102362617912 -0.9476120 100.8619 /T 79.0795 106.3/ 0.5120 n.a. n.a. 34.136602 1.4198002 -65.97571 2024-Nov-30 18:00 A 23 38 55.10 -13 31 35.3 158.334670 33.075972 n.a. n.a. 0.986355773048 0.0241420 0.00101983104297 -0.9425748 100.8980 /T 79.0436 106.2/ 0.5035 n.a. n.a. 34.631492 0.7220969 -65.63281 2024-Nov-30 18:10 A 23 38 55.26 -13 25 46.5 161.118266 33.825937 n.a. n.a. 0.986355864427 0.0224689 0.00101605642824 -0.9373679 100.9338 /T 79.0081 106.2/ 0.4950 n.a. n.a. 35.137459 0.1203106 -65.27915 2024-Nov-30 18:20 A 23 38 55.18 -13 19 52.5 163.958731 34.490420 n.a. n.a. 0.986355949043 0.0207680 0.00101230295941 -0.9320192 100.9693 /T 78.9728 106.2/ 0.4864 n.a. n.a. 35.652244 359.61309 -64.91666 2024-Nov-30 18:30 23 38 54.91 -13 13 53.4 166.851069 35.066137 n.a. n.a. 0.986356026785 0.0190385 0.00100857114855 -0.9265570 101.0046 /T 78.9377 106.2/ 0.4779 n.a. n.a. 36.173812 359.19882 -64.54714 2024-Nov-30 18:40 23 38 54.48 -13 07 49.1 169.789340 35.550125 n.a. n.a. 0.986356097535 0.0172801 0.00100486139324 -0.9210100 101.0399 /T 78.9026 106.1/ 0.4693 n.a. n.a. 36.700360 358.87564 -64.17229 2024-Nov-30 18:50 23 38 53.91 -13 01 39.5 172.766721 35.939814 n.a. n.a. 0.986356161176 0.0154919 0.00100117397486 -0.9154074 101.0754 /T 78.8673 106.1/ 0.4607 n.a. n.a. 37.230333 358.64156 -63.79371 2024-Nov-30 19:00 23 38 53.25 -12 55 24.6 175.775599 36.233084 n.a. n.a. 0.986356217589 0.0136735 0.00099750905705 -0.9097787 101.1111 /T 78.8318 106.0/ 0.4520 n.a. n.a. 37.762423 358.49446 -63.41288 2024-Nov-30 19:10 23 38 52.54 -12 49 04.4 178.807710 36.428325 n.a. n.a. 0.986356266649 0.0118242 0.00099386668451 -0.9041537 101.1472 /T 78.7959 106.0/ 0.4434 n.a. n.a. 38.295573 358.43213 -63.03117 2024-Nov-30 19:20 t 23 38 51.81 -12 42 38.9 181.854300 36.524478 n.a. n.a. 0.986356308231 0.0099432 0.00099024678210 -0.8985624 101.1839 /T 78.7595 106.0/ 0.4349 n.a. n.a. 38.828978 358.45233 -62.64985 2024-Nov-30 19:30 e 23 38 51.09 -12 36 08.1 184.906325 36.521066 n.a. n.a. 0.986356342208 0.0080299 0.00098664915410 -0.8930349 101.2212 /T 78.7224 105.9/ 0.4263 n.a. n.a. 39.362085 358.55275 -62.27009 2024-Nov-30 19:40 23 38 50.43 -12 29 31.9 187.954659 36.418212 n.a. n.a. 0.986356368447 0.0060835 0.00098307348392 -0.8876013 101.2593 /T 78.6845 105.9/ 0.4178 n.a. n.a. 39.894588 358.73108 -61.89296 2024-Nov-30 19:50 23 38 49.87 -12 22 50.3 190.990305 36.216632 n.a. n.a. 0.986356386815 0.0041034 0.00097951933383 -0.8822918 101.2983 /T 78.6457 105.9/ 0.4093 n.a. n.a. 40.426426 358.98497 -61.51941 2024-Nov-30 20:00 23 38 49.44 -12 16 03.4 194.004610 35.917622 n.a. n.a. 0.986356397175 0.0020888 0.00097598614536 -0.8771364 101.3385 /T 78.6057 105.8/ 0.4008 n.a. n.a. 40.957773 359.31205 -61.15033 2024-Nov-30 20:10 23 38 49.19 -12 09 11.1 196.989449 35.523022 n.a. n.a. 0.986356399387 0.0000388 0.00097247323955 -0.8721652 101.3799 /T 78.5646 105.8/ 0.3924 n.a. n.a. 41.489031 359.70993 -60.78651 2024-Nov-30 20:20 23 38 49.14 -12 02 13.5 199.937386 35.035170 n.a. n.a. 0.986356393306 -0.0020472 0.00096897981790 -0.8674079 101.4226 /T 78.5220 105.7/ 0.3841 n.a. n.a. 42.020826 0.1761763 -60.42863 2024-Nov-30 20:30 23 38 49.35 -11 55 10.6 202.841807 34.456849 n.a. n.a. 0.986356378787 -0.0041703 0.00096550496333 -0.8628937 101.4669 /T 78.4780 105.7/ 0.3758 n.a. n.a. 42.553989 0.7083206 -60.07731 2024-Nov-30 20:40 23 38 49.85 -11 48 02.4 205.697001 33.791218 n.a. n.a. 0.986356355679 -0.0063312 0.00096204764144 -0.8586518 101.5128 /T 78.4323 105.7/ 0.3677 n.a. n.a. 43.089550 1.3038376 -59.73310 2024-Nov-30 20:50 23 38 50.68 -11 40 49.0 208.498218 33.041748 n.a. n.a. 0.986356323828 -0.0085308 0.00095860670216 -0.8547108 101.5605 /T 78.3848 105.6/ 0.3596 n.a. n.a. 43.628721 1.9601382 -59.39645 2024-Nov-30 21:00 23 38 51.87 -11 33 30.3 211.241679 32.212154 n.a. n.a. 0.986356283078 -0.0107700 0.00095518088167 -0.8510988 101.6101 /T 78.3354 105.6/ 0.3516 n.a. n.a. 44.172884 2.6745577 -59.06778 2024-Nov-30 21:10 23 38 53.47 -11 26 06.4 213.924558 31.306326 n.a. n.a. 0.986356233267 -0.0130499 0.00095176880439 -0.8478434 101.6618 /T 78.2839 105.6/ 0.3437 n.a. n.a. 44.723570 3.4443452 -58.74742 2024-Nov-30 21:20 23 38 55.51 -11 18 37.3 216.544940 30.328268 n.a. n.a. 0.986356174230 -0.0153714 0.00094836898548 -0.8449715 101.7157 /T 78.2302 105.5/ 0.3359 n.a. n.a. 45.282443 4.2666548 -58.43567 2024-Nov-30 21:30 23 38 58.04 -11 11 03.1 219.101755 29.282043 n.a. n.a. 0.986356105798 -0.0177355 0.00094497983344 -0.8425093 101.7720 /T 78.1741 105.5/ 0.3283 n.a. n.a. 45.851285 5.1385377 -58.13275 2024-Nov-30 21:40 23 39 01.09 -11 03 23.9 221.594702 28.171721 n.a. n.a. 0.986356027799 -0.0201432 0.00094159965283 -0.8404823 101.8307 /T 78.1156 105.5/ 0.3208 n.a. n.a. 46.431967 6.0569379 -57.83887 2024-Nov-30 21:50 23 39 04.69 -10 55 39.6 224.024160 27.001338 n.a. n.a. 0.986355940053 -0.0225957 0.00093822664763 -0.8389153 101.8921 /T 78.0544 105.4/ 0.3134 n.a. n.a. 47.026435 7.0186898 -57.55420 2024-Nov-30 22:00 23 39 08.88 -10 47 50.3 226.391102 25.774863 n.a. n.a. 0.986355842381 -0.0250941 0.00093485892426 -0.8378321 101.9562 /T 77.9905 105.4/ 0.3062 n.a. n.a. 47.636685 8.0205193 -57.27888 2024-Nov-30 22:10 23 39 13.70 -10 39 56.1 228.697003 24.496148 n.a. n.a. 0.986355734312 -0.0277779 0.00093149420395 -0.8373971 102.0231 /T 77.9238 105.4/ 0.2991 n.a. n.a. 48.253417 9.0540095 -57.02360 2024-Nov-30 22:20 23 39 19.17 -10 31 57.1 230.943761 23.168933 n.a. n.a. 0.986355615421 -0.0304891 0.00092813018729 -0.8374622 102.0930 /T 77.8541 105.4/ 0.2922 n.a. n.a. 48.891342 10.121940 -56.77620 2024-Nov-30 22:30 23 39 25.34 -10 23 53.4 233.133619 21.796842 n.a. n.a. 0.986355485613 -0.0332213 0.00092476484071 -0.8380416 102.1661 /T 77.7813 105.4/ 0.2854 n.a. n.a. 49.553152 11.220901 -56.53621 2024-Nov-30 22:40 23 39 32.23 -10 15 44.9 235.269099 20.383359 n.a. n.a. 0.986355344811 -0.0359712 0.00092139606770 -0.8391523 102.2423 /T 77.7052 105.3/ 0.2788 n.a. n.a. 50.241308 12.347267 -56.30340 2024-Nov-30 22:50 23 39 39.89 -10 07 31.7 237.352937 18.931820 n.a. n.a. 0.986355192945 -0.0387380 0.00091802169982 -0.8408131 102.3219 /T 77.6258 105.3/ 0.2724 n.a. n.a. 50.958014 13.497236 -56.07773 2024-Nov-30 23:00 23 39 48.33 -09 59 13.7 239.388032 17.445412 n.a. n.a. 0.986355029945 -0.0415236 0.00091463948851 -0.8430449 102.4049 /T 77.5430 105.3/ 0.2662 n.a. n.a. 51.705182 14.666885 -55.85944 2024-Nov-30 23:10 23 39 57.60 -09 50 51.1 241.377404 15.927170 n.a. n.a. 0.986354855727 -0.0443326 0.00091124709798 -0.8458703 102.4916 /T 77.4566 105.3/ 0.2602 n.a. n.a. 52.484416 15.852219 -55.64896 2024-Nov-30 23:20 23 40 07.72 -09 42 23.8 243.324151 14.379985 n.a. n.a. 0.986354670185 -0.0471716 0.00090784210031 -0.8493126 102.5819 /T 77.3664 105.3/ 0.2543 n.a. n.a. 53.297006 17.049236 -55.44691 2024-Nov-30 23:30 23 40 18.73 -09 33 51.9 245.231429 12.806606 n.a. n.a. 0.986354473181 -0.0500491 0.00090442197348 -0.8533951 102.6761 /T 77.2725 105.3/ 0.2487 n.a. n.a. 54.143953 18.253987 -55.25405 2024-Nov-30 23:40 23 40 30.64 -09 25 15.3 247.102418 11.209645 n.a. n.a. 0.986354264541 -0.0529746 0.00090098410257 -0.8581407 102.7742 /T 77.1746 105.3/ 0.2433 n.a. n.a. 55.025993 19.462626 -55.07121 2024-Nov-30 23:50 23 40 43.50 -09 16 34.1 248.940313 9.591590 n.a. n.a. 0.986354044054 -0.0559581 0.00089752578426 -0.8635705 102.8762 /T 77.0727 105.3/ 0.2380 n.a. n.a. 55.943645 20.671464 -54.89925 2024-Dec-01 00:00 23 40 57.31 -09 07 48.3 250.748306 7.954809 n.a. n.a. 0.986353811467 -0.0590095 0.00089404423462 -0.8697034 102.9825 /T 76.9668 105.3/ 0.2330 n.a. n.a. 56.897256 21.877004 -54.73899 $$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 ***************************************************************************************************************************************************************************************************************************************************