API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Dec 10, 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 Thu Dec 12 03:23:27 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-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 39 19.67 -13 54 29.2 142.770307 27.078733 n.a. n.a. 0.986357472077 0.0307215 0.00103738785973 -0.9844367 100.8628 /T 79.0778 106.6/ 0.5536 n.a. n.a. 32.300380 6.6428195 -67.63566 2024-Nov-30 17:10 C 23 39 22.00 -13 49 06.0 145.159174 28.269263 n.a. n.a. 0.986357590067 0.0291591 0.00103344238684 -0.9807384 100.9035 /T 79.0373 106.6/ 0.5454 n.a. n.a. 32.701113 5.4640444 -67.38694 2024-Nov-30 17:20 N 23 39 23.92 -13 43 38.1 147.616322 29.397383 n.a. n.a. 0.986357701744 0.0275712 0.00102951232205 -0.9767419 100.9433 /T 78.9977 106.6/ 0.5372 n.a. n.a. 33.127274 4.3794548 -67.11682 2024-Nov-30 17:30 N 23 39 25.45 -13 38 05.3 150.141966 30.459183 n.a. n.a. 0.986357807005 0.0259571 0.00102559881260 -0.9724715 100.9823 /T 78.9590 106.5/ 0.5288 n.a. n.a. 33.575835 3.3905338 -66.82758 2024-Nov-30 17:40 N 23 39 26.63 -13 32 27.7 152.735632 31.450715 n.a. n.a. 0.986357905742 0.0243165 0.00102170290675 -0.9679524 101.0205 /T 78.9210 106.5/ 0.5204 n.a. n.a. 34.043860 2.4980173 -66.52145 2024-Nov-30 17:50 N 23 39 27.47 -13 26 45.1 155.396070 32.368042 n.a. n.a. 0.986357997849 0.0226487 0.00101782555057 -0.9632103 101.0581 /T 78.8837 106.5/ 0.5120 n.a. n.a. 34.528543 1.7019965 -66.20060 2024-Nov-30 18:00 A 23 39 28.01 -13 20 57.4 158.121172 33.207283 n.a. n.a. 0.986358083216 0.0209532 0.00101396758514 -0.9582718 101.0952 /T 78.8469 106.5/ 0.5035 n.a. n.a. 35.027235 1.0020192 -65.86710 2024-Nov-30 18:10 A 23 39 28.29 -13 15 04.6 160.907915 33.964680 n.a. n.a. 0.986358161729 0.0192294 0.00101012974367 -0.9531641 101.1318 /T 78.8104 106.4/ 0.4950 n.a. n.a. 35.537473 0.3971841 -65.52292 2024-Nov-30 18:20 A 23 39 28.33 -13 09 06.6 163.752312 34.636653 n.a. n.a. 0.986358233274 0.0174768 0.00100631264912 -0.9479150 101.1683 /T 78.7742 106.4/ 0.4864 n.a. n.a. 36.056998 359.88623 -65.16997 2024-Nov-30 18:30 23 39 28.18 -13 03 03.4 166.649401 35.219873 n.a. n.a. 0.986358297734 0.0156946 0.00100251681184 -0.9425528 101.2045 /T 78.7382 106.4/ 0.4779 n.a. n.a. 36.583772 359.46760 -64.81002 2024-Nov-30 18:40 23 39 27.85 -12 56 54.9 169.593261 35.711334 n.a. n.a. 0.986358354989 0.0138823 0.00099874262762 -0.9371062 101.2408 /T 78.7021 106.3/ 0.4693 n.a. n.a. 37.115990 359.13952 -64.44474 2024-Nov-30 18:50 23 39 27.40 -12 50 41.1 172.577069 36.108415 n.a. n.a. 0.986358404918 0.0120392 0.00099499037589 -0.9316046 101.2772 /T 78.6659 106.3/ 0.4607 n.a. n.a. 37.652090 358.90006 -64.07571 2024-Nov-30 19:00 23 39 26.85 -12 44 21.9 175.593194 36.408949 n.a. n.a. 0.986358447394 0.0101647 0.00099126021822 -0.9260774 101.3138 /T 78.6295 106.3/ 0.4520 n.a. n.a. 38.190754 358.74716 -63.70439 2024-Nov-30 19:10 23 39 26.24 -12 37 57.4 178.633331 36.611277 n.a. n.a. 0.986358482291 0.0082581 0.00098755219706 -0.9205545 101.3509 /T 78.5927 106.2/ 0.4434 n.a. n.a. 38.730918 358.67866 -63.33214 2024-Nov-30 19:20 t 23 39 25.62 -12 31 27.4 181.688671 36.714295 n.a. n.a. 0.986358509478 0.0063186 0.00098386623472 -0.9150658 101.3885 /T 78.5553 106.2/ 0.4349 n.a. n.a. 39.271770 358.69236 -62.96019 2024-Nov-30 19:30 e 23 39 25.01 -12 24 52.1 184.750093 36.717487 n.a. n.a. 0.986358528822 0.0043456 0.00098020213285 -0.9096417 101.4267 /T 78.5173 106.1/ 0.4263 n.a. n.a. 39.812746 358.78600 -62.58970 2024-Nov-30 19:40 23 39 24.45 -12 18 11.3 187.808378 36.620937 n.a. n.a. 0.986358540187 0.0023382 0.00097655957180 -0.9043123 101.4658 /T 78.4785 106.1/ 0.4178 n.a. n.a. 40.353532 358.95728 -62.22173 2024-Nov-30 19:50 23 39 23.99 -12 11 25.0 190.854428 36.425333 n.a. n.a. 0.986358543432 0.0002957 0.00097293811071 -0.8991078 101.5058 /T 78.4387 106.1/ 0.4093 n.a. n.a. 40.894060 359.20390 -61.85721 2024-Nov-30 20:00 23 39 23.67 -12 04 33.4 193.879478 36.131946 n.a. n.a. 0.986358538416 -0.0017827 0.00096933718749 -0.8940585 101.5468 /T 78.3978 106.0/ 0.4008 n.a. n.a. 41.434498 359.52352 -61.49701 2024-Nov-30 20:10 23 39 23.51 -11 57 36.3 196.875288 35.742602 n.a. n.a. 0.986358524993 -0.0038978 0.00096575611943 -0.8891942 101.5892 /T 78.3557 106.0/ 0.3924 n.a. n.a. 41.975243 359.91375 -61.14189 2024-Nov-30 20:20 23 39 23.57 -11 50 33.8 199.834312 35.259630 n.a. n.a. 0.986358503014 -0.0060506 0.00096219410380 -0.8845449 101.6329 /T 78.3122 106.0/ 0.3841 n.a. n.a. 42.516917 0.3721916 -60.79254 2024-Nov-30 20:30 23 39 23.88 -11 43 25.9 202.749823 34.685812 n.a. n.a. 0.986358472325 -0.0082418 0.00095865021891 -0.8801399 101.6781 /T 78.2672 105.9/ 0.3758 n.a. n.a. 43.060351 0.8963899 -60.44956 2024-Nov-30 20:40 23 39 24.47 -11 36 12.6 205.616015 34.024312 n.a. n.a. 0.986358432771 -0.0104724 0.00095512342547 -0.8760085 101.7250 /T 78.2205 105.9/ 0.3677 n.a. n.a. 43.606575 1.4838348 -60.11346 2024-Nov-30 20:50 23 39 25.40 -11 28 53.9 208.428046 33.278614 n.a. n.a. 0.986358384191 -0.0127434 0.00095161256808 -0.8721794 101.7737 /T 78.1720 105.9/ 0.3596 n.a. n.a. 44.156805 2.1319515 -59.78471 2024-Nov-30 21:00 23 39 26.70 -11 21 29.9 211.182060 32.452447 n.a. n.a. 0.986358326421 -0.0150557 0.00094811637707 -0.8686808 101.8244 /T 78.1215 105.8/ 0.3516 n.a. n.a. 44.712427 2.8380885 -59.46369 2024-Nov-30 21:10 23 39 28.40 -11 14 00.6 213.875169 31.549723 n.a. n.a. 0.986358259294 -0.0174104 0.00094463347071 -0.8655403 101.8771 /T 78.0690 105.8/ 0.3437 n.a. n.a. 45.274981 3.5995079 -59.15071 2024-Nov-30 21:20 23 39 30.55 -11 06 26.1 216.505408 30.574470 n.a. n.a. 0.986358182638 -0.0198085 0.00094116235740 -0.8627851 101.9321 /T 78.0143 105.8/ 0.3359 n.a. n.a. 45.846143 4.4133764 -58.84606 2024-Nov-30 21:30 23 39 33.19 -10 58 46.3 219.071670 29.530776 n.a. n.a. 0.986358096275 -0.0222510 0.00093770143845 -0.8604414 101.9894 /T 77.9571 105.7/ 0.3283 n.a. n.a. 46.427707 5.2767582 -58.54996 2024-Nov-30 21:40 23 39 36.34 -10 51 01.4 221.573628 28.422739 n.a. n.a. 0.986358000026 -0.0247391 0.00093424901078 -0.8585350 102.0493 /T 77.8975 105.7/ 0.3208 n.a. n.a. 47.021562 6.1866104 -58.26259 2024-Nov-30 21:50 23 39 40.06 -10 43 11.3 224.011647 27.254424 n.a. n.a. 0.986357893705 -0.0272740 0.00093080327008 -0.8570906 102.1117 /T 77.8352 105.7/ 0.3134 n.a. n.a. 47.629673 7.1397808 -57.98409 2024-Nov-30 22:00 23 39 44.37 -10 35 16.0 226.386694 26.029826 n.a. n.a. 0.986357777122 -0.0298569 0.00092736231404 -0.8561323 102.1770 /T 77.7702 105.6/ 0.3062 n.a. n.a. 48.254058 8.1330097 -57.71461 2024-Nov-30 22:10 23 39 49.31 -10 27 15.8 228.700247 24.752816 n.a. n.a. 0.986357649615 -0.0327177 0.00092392360411 -0.8559474 102.2451 /T 77.7023 105.6/ 0.2991 n.a. n.a. 48.878420 9.1551702 -57.47202 2024-Nov-30 22:20 23 39 54.90 -10 19 10.8 230.954209 23.427150 n.a. n.a. 0.986357510594 -0.0355960 0.00092048462314 -0.8562466 102.3162 /T 77.6314 105.6/ 0.2922 n.a. n.a. 49.525325 10.212424 -57.23597 2024-Nov-30 22:30 23 40 01.20 -10 11 00.9 233.150837 22.056484 n.a. n.a. 0.986357360014 -0.0384804 0.00091704341570 -0.8570377 102.3904 /T 77.5574 105.6/ 0.2854 n.a. n.a. 50.197927 11.301464 -57.00555 2024-Nov-30 22:40 23 40 08.22 -10 02 46.1 235.292669 20.644329 n.a. n.a. 0.986357197864 -0.0413641 0.00091359798394 -0.8583337 102.4679 /T 77.4801 105.6/ 0.2788 n.a. n.a. 50.899037 12.418679 -56.78022 2024-Nov-30 22:50 23 40 16.01 -09 54 26.6 237.382461 19.194051 n.a. n.a. 0.986357024154 -0.0442446 0.00091014626974 -0.8601516 102.5487 /T 77.3995 105.6/ 0.2724 n.a. n.a. 51.631094 13.560224 -56.55981 2024-Nov-30 23:00 23 40 24.60 -09 46 02.2 239.423136 17.708862 n.a. n.a. 0.986356838895 -0.0471238 0.00090668613697 -0.8625131 102.6331 /T 77.3153 105.5/ 0.2662 n.a. n.a. 52.396119 14.722070 -56.34452 2024-Nov-30 23:10 23 40 34.02 -09 37 32.9 241.417735 16.191825 n.a. n.a. 0.986356642080 -0.0500075 0.00090321535517 -0.8654434 102.7211 /T 77.2276 105.5/ 0.2602 n.a. n.a. 53.195693 15.900087 -56.13491 2024-Nov-30 23:20 23 40 44.30 -09 28 58.8 243.369382 14.645853 n.a. n.a. 0.986356433673 -0.0529057 0.00089973158646 -0.8689707 102.8128 /T 77.1360 105.5/ 0.2543 n.a. n.a. 54.030966 17.090122 -55.93185 2024-Nov-30 23:30 23 40 55.47 -09 20 19.8 245.281252 13.073717 n.a. n.a. 0.986356213592 -0.0558308 0.00089623237668 -0.8731245 102.9085 /T 77.0406 105.5/ 0.2487 n.a. n.a. 54.902691 18.288073 -55.73644 2024-Nov-30 23:40 23 41 07.57 -09 11 36.0 247.156551 11.478051 n.a. n.a. 0.986355981699 -0.0587975 0.00089271515170 -0.8779349 103.0081 /T 76.9412 105.5/ 0.2433 n.a. n.a. 55.811280 19.489967 -55.54991 2024-Nov-30 23:50 23 41 20.61 -09 02 47.4 248.998492 9.861359 n.a. n.a. 0.986355737797 -0.0618212 0.00088917721941 -0.8834304 103.1118 /T 76.8377 105.5/ 0.2380 n.a. n.a. 56.756876 20.692017 -55.37356 2024-Dec-01 00:00 23 41 34.64 -08 53 54.0 250.810287 8.226025 n.a. n.a. 0.986355481626 -0.0649172 0.00088561577718 -0.8896372 103.2196 /T 76.7301 105.6/ 0.2330 n.a. n.a. 57.739439 21.890665 -55.20863 $$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 ***************************************************************************************************************************************************************************************************************************************************