API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: May 13, 2025 INTEGRAL Spacecraft (gamma-ray observatory) -198 http://www.esa.int/export/esaMI/Integral/ESAR0RPV16D_0.html INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory): Deployment (Proton) = Oct 17, 2002 Diameter/length (meters) = 3.7/5 m ORBITAL DATA: Inclination = 51 degrees Orbital period = ~72 hours Apogee altitude = ~ 155000 km Perigee altitude = ~9,000 km The spacecraft will spend most of its time above an altitude of 40,000 km (outside Earth's radiation belts), thus minimizing background radiation effects. Will study black holes, neutron stars, active galactic nuclei and supernovae, providing information on formation of new chemical elements and gamma-ray bursts. ESA mission. WEIGHTS & PROPULSION: Launch Mass: 4 tonnes SPACECRAFT TRAJECTORY Launch to 2005-Jan-31 JPL Multi-Mission Navigation Team, merged solutions: OD0018_021017, OD0020_021019, OD0022_021021, OD0030_021029, OD0035_021108, OD0037_021119, OD0040_021129, OD0042_021206, OD0045_021216, OD0047_021222, OD0051_030102, OD0053_030108, OD0057_030120, OD0060_030127, OD0062_030207, OD0066_030219, OD0068_030228, OD0071_030310, OD0075_030321, OD0079_030402, OD0084_030416, OD0089_030502, OD0090_030505, OD0097_030529, OD0105_030624, OD0113_030721, OD0122_030817, OD0127_030907, OD0131_030919, OD0134_031001, OD0141_031022, OD0148_031117, OD0153_031201, OD0157_031212, OD0163_031230, OD0169_040126, OD0179_040222, OD0182_040302, OD0184_040309, OD0192_040401, OD0202_040428, OD0209_040521, OD0212_040530, OD0219_040620, OD0227_040714, OD0236_040810, OD0240_040822, OD0246_040906, OD0251_040927, OD0256_041015, OD0260_041101, OD0267_041123, OD0277_041215, OD0285_050101. 2005-Jan-31 to 2015-Jan-01: JSpOC TLEs 2015-Jan-01 to 2015-Dec-02: ESA-provided ephemeris 2015-Dec-02 to PRESENT : JSpOC TLEs NOTE: The ESA ephemeris is used for much of 2015 since TLE's issued by JSpOC were based on an obsolete predictive ephemeris for the spacecraft that did not reflect January 2015 maneuvering of INTEGRAL to a different orbit. http://sci.esa.int/integral/55345-integral-manoeuvres-for-the-future/ ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Wed May 14 23:19:52 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: INTEGRAL (spacecraft) (-198) {source: integral_merged} Center body name: Earth (399) {source: DE441} Center-site name: Swan Reach Imaging, Glenalta ******************************************************************************* Start time : A.D. 2025-Apr-19 00:00:00.0000 UT Stop time : A.D. 2025-May-01 00:00:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 139.5701, -34.5440227, .056888 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 139.5701,5259.32258,-3596.34777 {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.250514.p250810 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-MAY-14. PREDICTS-> 2025-AUG-09 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 .....< 2025-Apr-21 10:00 12 57 59.62 +37 20 50.7 41.044203 1.641107 n.a. n.a. 1.005144570406 -0.1978222 0.00026253161177 -3.6240023 128.9033 /T 51.0843 122.2/ 46.1563 n.a. n.a. 541.00415 182.49270 -64.65101 2025-Apr-21 10:10 12 57 39.19 +35 45 43.5 40.554761 4.213952 n.a. n.a. 1.005143563194 -0.3058747 0.00024779362231 -3.7223651 130.3793 /T 49.6092 122.3/ 46.0562 n.a. n.a. 602.70141 182.34566 -64.12753 2025-Apr-21 10:20 12 57 18.47 +33 59 15.9 40.082891 6.945773 n.a. n.a. 1.005142092402 -0.4294036 0.00023264743340 -3.8275533 132.0271 /T 47.9623 122.2/ 45.9565 n.a. n.a. 677.55504 182.12783 -63.53495 2025-Apr-21 10:30 12 56 58.15 +31 58 55.4 39.646982 9.873279 n.a. n.a. 1.005140089312 -0.5718558 0.00021706436937 -3.9401947 133.8842 /T 46.1061 122.2/ 45.8571 n.a. n.a. 769.92936 181.83526 -62.85526 2025-Apr-21 10:40 12 56 39.20 +29 41 16.4 39.274378 13.046029 n.a. n.a. 1.005137469358 -0.7377375 0.00020101348676 -4.0607607 136.0009 /T 43.9904 122.0/ 45.7583 n.a. n.a. 886.26745 181.46273 -62.06228 2025-Apr-21 10:50 12 56 23.04 +27 01 32.9 39.007442 16.532607 n.a. n.a. 1.005134127107 -0.9330244 0.00018446269167 -4.1892860 138.4458 /T 41.5464 121.7/ 45.6599 n.a. n.a. 1036.4332 181.00332 -61.11673 2025-Apr-21 11:00 12 56 11.88 +23 52 54.0 38.915178 20.430720 n.a. n.a. 1.005129929233 -1.1657574 0.00016738156048 -4.3247552 141.3153 /T 38.6779 121.3/ 45.5620 n.a. n.a. 1236.1899 180.44765 -59.95739 2025-Apr-21 11:10 12 56 09.28 +20 05 03.3 39.117342 24.884331 n.a. n.a. 1.005124704611 -1.4468980 0.00014974794723 -4.4637202 144.7476 /T 35.2466 120.5/ 45.4647 n.a. n.a. 1512.0442 179.78283 -58.48448 2025-Apr-21 11:20 12 56 21.34 +15 21 48.3 39.839875 30.113597 n.a. n.a. 1.005118230308 -1.7915240 0.00013156332861 -4.5970437 148.9443 /T 31.0510 119.3/ 45.3681 n.a. n.a. 1911.3356 178.99062 -56.52629 2025-Apr-21 11:30 12 56 59.39 +09 15 57.3 41.560920 36.466904 n.a. n.a. 1.005110212099 -2.2203380 0.00011288945313 -4.7017356 154.1836 /T 25.8127 117.4/ 45.2720 n.a. n.a. 2524.6647 178.04353 -53.76776 2025-Apr-21 11:40 12 58 27.00 +00 58 28.4 45.475477 44.495262 n.a. n.a. 1.005100258982 -2.7609687 0.00009394071144 -4.7189095 160.6751 /T 19.3223 114.1/ 45.1767 n.a. n.a. 3538.1318 176.89257 -49.58790 2025-Apr-21 11:50 13 01 41.88 -11 05 31.4 55.422386 54.870094 n.a. n.a. 1.005087856260 -3.4466983 0.00007533326705 -4.4902639 166.5569 /T 13.4418 108.2/ 45.0822 n.a. n.a. 5347.0773 175.41133 -42.68048 2025-Apr-21 12:00 13 09 49.78 -30 00 12.3 87.545447 65.666077 n.a. n.a. 1.005072360938 -4.3044514 0.00005877985122 -3.5861359 158.9184 /T 21.0810 97.4/ 44.9884 n.a. n.a. 8627.4118 173.05049 -30.32616 2025-Apr-21 12:10 e 13 40 48.11 -59 31 34.3 149.301671 56.655060 n.a. n.a. 1.005053100036 -5.3108121 0.00004859607397 -1.1792794 132.3013 /T 47.6974 78.8/ 44.8954 n.a. n.a. 12772.806 165.50959 -8.929573 2025-Apr-21 12:20 21 36 53.79 -79 36 00.0 174.312846 25.247282 n.a. n.a. 1.005029753950 -6.2942262 0.00005093617057 2.3133222 97.3718 /L 82.6259 58.2/ 44.8032 n.a. n.a. 12435.115 46.620935 16.813248 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-26 20:10 Ar 07 43 46.64 -55 09 52.2 179.392797 -0.222008 n.a. n.a. 1.006457254936 -6.4963216 0.00006399228423 -1.6710305 96.5938 /T 83.4024 102.3/ 1.3109 n.a. n.a. 9692.3849 253.88515 -12.56236 2025-Apr-26 20:20 Nm 04 33 01.96 -51 30 50.8 150.691699 7.023724 n.a. n.a. 1.006430796774 -6.5778104 0.00006168018347 0.5618216 71.6037 /T 108.3927 75.1/ 1.2927 n.a. n.a. 10119.956 300.17211 4.2608386 2025-Apr-26 20:30 Nm 02 48 47.18 -33 48 29.5 123.478937 11.083046 n.a. n.a. 1.006405186222 -6.1178713 0.00006802364104 2.4619812 48.1043 /T 131.8924 49.7/ 1.2749 n.a. n.a. 8233.5249 324.43744 19.985609 2025-Apr-26 20:40 Ne 02 04 32.07 -16 53 57.3 102.226076 12.018318 n.a. n.a. 1.006381979721 -5.4302988 0.00008024744620 3.4948815 30.7345 /L 149.2627 30.2/ 1.2574 n.a. n.a. 5949.4902 334.30586 31.198987 2025-Apr-26 20:50 Cm 01 41 57.54 -03 58 24.9 86.707582 11.540763 n.a. n.a. 1.006361584988 -4.7409144 0.00009526986656 3.9185558 19.6598 /L 160.3380 16.2/ 1.2404 n.a. n.a. 4281.5021 339.26845 38.475722 2025-Apr-26 21:00 Cm 01 28 22.36 +05 43 40.4 75.173251 10.679159 n.a. n.a. 1.006343803394 -4.1345498 0.00011131123504 4.0416159 14.3336 /L 165.6648 6.083/ 1.2239 n.a. n.a. 3191.1016 342.20707 43.267775 2025-Apr-26 21:10 Cm 01 19 10.81 +13 11 57.4 66.229950 9.806998 n.a. n.a. 1.006328262020 -3.6241034 0.00012754017847 4.0304682 14.0181 /L 165.9804 2.110/ 1.2077 n.a. n.a. 2473.6929 344.09484 46.582903 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2025-Apr-29 09:30 12 57 00.29 +37 49 21.5 40.364425 1.619557 n.a. n.a. 1.007262943875 0.0398174 0.00026399373827 -3.6108202 123.6499 /T 56.3369 104.8/ 3.8108 n.a. n.a. 535.13540 182.78234 -64.68899 2025-Apr-29 09:40 12 56 37.57 +36 15 22.7 39.848359 4.171079 n.a. n.a. 1.007262916368 -0.0539283 0.00024931059567 -3.7083129 125.0136 /T 54.9741 105.8/ 3.8393 n.a. n.a. 595.59382 182.64003 -64.17211 2025-Apr-29 09:50 12 56 14.31 +34 30 17.9 39.344572 6.878815 n.a. n.a. 1.007262485957 -0.1615164 0.00023422286165 -3.8125526 126.5316 /T 53.4569 107.1/ 3.8683 n.a. n.a. 668.80106 182.42863 -63.58825 2025-Apr-29 10:00 12 55 51.12 +32 31 39.7 38.869705 9.778599 n.a. n.a. 1.007261591108 -0.2860719 0.00021870215539 -3.9241753 128.2369 /T 51.7525 108.4/ 3.8979 n.a. n.a. 758.93663 182.14462 -62.92022 2025-Apr-29 10:10 12 55 28.86 +30 16 09.5 38.448457 12.918727 n.a. n.a. 1.007260155903 -0.4316904 0.00020271775732 -4.0436815 130.1731 /T 49.8173 110.0/ 3.9281 n.a. n.a. 872.14654 181.78339 -62.14305 2025-Apr-29 10:20 12 55 08.79 +27 39 12.8 38.118999 16.365913 n.a. n.a. 1.007258085427 -0.6038208 0.00018623759866 -4.1711803 132.3989 /T 47.5925 111.8/ 3.9588 n.a. n.a. 1017.7966 181.33881 -61.21944 2025-Apr-29 10:30 12 54 52.84 +24 34 16.1 37.943274 20.215009 n.a. n.a. 1.007255259279 -0.8098236 0.00016923080333 -4.3058317 134.9952 /T 44.9971 114.0/ 3.9902 n.a. n.a. 1210.7729 180.80256 -60.09148 2025-Apr-29 10:40 12 54 44.10 +20 51 32.7 38.028222 24.605509 n.a. n.a. 1.007251522370 -1.0597857 0.00015167366831 -4.4445925 138.0759 /T 41.9174 116.5/ 4.0221 n.a. n.a. 1475.9470 180.16330 -58.66536 2025-Apr-29 10:50 12 54 47.84 +16 15 42.8 38.574087 29.750533 n.a. n.a. 1.007246671761 -1.3676871 0.00013356353820 -4.5792826 141.8016 /T 38.1928 119.6/ 4.0546 n.a. n.a. 1857.4061 179.40512 -56.78062 2025-Apr-29 11:00 12 55 13.74 +10 21 14.8 40.000118 35.988224 n.a. n.a. 1.007240438018 -1.7529572 0.00011495178631 -4.6892893 146.3858 /T 33.6097 123.6/ 4.0878 n.a. n.a. 2438.8289 178.50457 -54.14506 2025-Apr-29 11:10 12 56 21.60 +02 22 30.4 43.338352 43.862723 n.a. n.a. 1.007232459935 -2.2421015 0.00009602633696 -4.7220400 152.0028 /T 27.9938 128.7/ 4.1215 n.a. n.a. 3390.8358 177.42136 -50.18732 2025-Apr-29 11:20 12 58 58.71 -09 08 15.4 51.844956 54.120194 n.a. n.a. 1.007222255038 -2.8686510 0.00007733254915 -4.5370042 157.9161 /T 22.0816 135.2/ 4.1559 n.a. n.a. 5076.5899 176.05705 -43.71192 2025-Apr-29 11:30 13 05 30.86 -27 03 12.3 79.735446 65.789154 n.a. n.a. 1.007209203176 -3.6649059 0.00006039083843 -3.7501116 157.3270 /T 22.6718 142.2/ 4.1909 n.a. n.a. 8157.0231 174.00451 -32.19992 2025-Apr-29 11:40 e 13 28 38.19 -55 23 15.7 144.589549 60.455813 n.a. n.a. 1.007192608088 -4.6270170 0.00004913119307 -1.5543680 137.6136 /T 42.3852 140.1/ 4.2265 n.a. n.a. 12406.393 168.31034 -11.90928 2025-Apr-29 11:50 20 08 17.85 -82 27 17.5 173.145707 29.599260 n.a. n.a. 1.007172000359 -5.6273960 0.00004983118015 1.9370110 104.9897 /L 75.0083 119.0/ 4.2628 n.a. n.a. 12799.652 67.994221 14.105321 2025-Apr-29 12:00 t 23 57 27.74 -56 00 49.2 181.357051 0.438373 n.a. n.a. 1.007147825227 -6.3394411 0.00006304395296 4.3367563 77.1419 /L 102.8551 96.2/ 4.2996 n.a. n.a. 9028.4350 11.490623 32.224772 >..... 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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ***************************************************************************************************************************************************************************************************************************************************