API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: Feb 16, 2026 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 Tue Feb 17 15:08:34 2026 Pasadena, USA / Horizons ******************************************************************************* Target body name: INTEGRAL (spacecraft) (-198) {source: integral_merged} Center body name: Earth (399) {source: DE441} Center-site name: Deep Random Survey, El Sauce ******************************************************************************* Start time : A.D. 2026-Jan-13 00:00:00.0000 UT Stop time : A.D. 2026-Jan-27 00:00:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 289.1467, -30.5262851, 1.74234 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 289.1467,5500.35467,-3221.64998 {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.260217.p260516 EOP coverage : DATA-BASED 1962-JAN-20 TO 2026-FEB-17. PREDICTS-> 2026-MAY-15 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 .....< 2026-Jan-15 04:10 13 12 36.20 -11 17 20.0 100.973668 3.898844 n.a. n.a. 0.983718578551 -4.2579355 0.00008306164223 -4.5308325 93.6141 /L 86.3802 53.0/ 12.1435 n.a. n.a. 5847.3195 157.30715 -37.65885 2026-Jan-15 04:20 13 52 04.60 -29 23 38.0 120.142439 7.193132 n.a. n.a. 0.983700795402 -4.5837632 0.00006679473168 -3.3765658 78.5867 /L 101.4086 39.0/ 12.0849 n.a. n.a. 8977.0467 148.31597 -24.98031 2026-Jan-15 04:30 e 15 39 55.14 -51 13 10.6 148.692570 5.392257 n.a. n.a. 0.983682142205 -4.6495753 0.00005805066711 -0.7176631 55.9809 /L 124.0155 27.7/ 12.0268 n.a. n.a. 12030.153 123.58418 -4.863616 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2026-Jan-20 08:10 11 40 17.66 +59 51 45.2 2.050239 -0.301740 n.a. n.a. 0.984295743861 -1.0049728 0.00038206464374 -2.7202231 125.5794 /L 54.4020 130.3/ 2.5200 n.a. n.a. 286.64989 199.01919 -64.04862 2026-Jan-20 08:20 11 38 12.91 +59 05 01.0 0.537949 0.535517 n.a. n.a. 0.984291619657 -1.0509872 0.00037105667085 -2.7658720 126.1273 /L 53.8548 131.1/ 2.5496 n.a. n.a. 305.38816 198.49975 -63.65320 2026-Jan-20 08:30 At 11 36 06.49 +58 15 01.4 358.948363 1.357020 n.a. n.a. 0.984287304857 -1.1000125 0.00035986158236 -2.8135053 126.7052 /L 53.2774 131.9/ 2.5792 n.a. n.a. 325.98650 197.97270 -63.25090 2026-Jan-20 08:40 A 11 33 58.37 +57 21 26.4 357.276628 2.162594 n.a. n.a. 0.984282786712 -1.1523895 0.00034847101684 -2.8633255 127.3156 /L 52.6678 132.7/ 2.6087 n.a. n.a. 348.73567 197.44253 -62.84019 2026-Jan-20 08:50 A 11 31 48.45 +56 23 52.9 355.517058 2.952293 n.a. n.a. 0.984278050994 -1.2085144 0.00033687575291 -2.9155592 127.9607 /L 52.0233 133.7/ 2.6382 n.a. n.a. 373.99024 196.91392 -62.41920 2026-Jan-20 09:00 A 11 29 36.60 +55 21 53.8 353.662941 3.726451 n.a. n.a. 0.984273081763 -1.2688447 0.00032506562093 -2.9704482 128.6434 /L 51.3413 134.6/ 2.6675 n.a. n.a. 402.18524 196.39183 -61.98560 2026-Jan-20 09:10 N 11 27 22.58 +54 14 57.4 351.706272 4.485752 n.a. n.a. 0.984267861087 -1.3339255 0.00031302942342 -3.0282778 129.3667 /L 50.6187 135.7/ 2.6968 n.a. n.a. 433.86280 195.88151 -61.53650 2026-Jan-20 09:20 N 11 25 06.07 +53 02 26.3 349.637411 5.231313 n.a. n.a. 0.984262368632 -1.4044050 0.00030075471533 -3.0893712 130.1341 /L 49.8519 136.8/ 2.7258 n.a. n.a. 469.70484 195.38863 -61.06830 2026-Jan-20 09:30 N 11 22 46.59 +51 43 35.3 347.444625 5.964785 n.a. n.a. 0.984256581233 -1.4810527 0.00028822770964 -3.1540790 130.9495 /L 49.0372 138.0/ 2.7548 n.a. n.a. 510.57776 194.91951 -60.57651 2026-Jan-20 09:40 C 11 20 23.52 +50 17 29.9 345.113461 6.688488 n.a. n.a. 0.984250472338 -1.5647939 0.00027543314188 -3.2227871 131.8173 /L 48.1701 139.4/ 2.7836 n.a. n.a. 557.59864 194.48122 -60.05540 2026-Jan-20 09:50 C 11 17 55.98 +48 43 03.0 342.625891 7.405567 n.a. n.a. 0.984244011299 -1.6567508 0.00026235413149 -3.2959143 132.7423 /L 47.2459 140.8/ 2.8121 n.a. n.a. 612.22976 194.08193 -59.49765 >..... Daylight Cut-off Requested .....< >..... Elevation Cut-off Requested .....< >..... Elevation Cut-off Requested .....< 2026-Jan-23 03:30 r 12 48 49.50 +03 15 23.3 86.509372 -0.207738 n.a. n.a. 0.984366319243 -4.1280759 0.00010633658795 -4.8386182 112.5907 /L 67.4029 160.9/ 18.5137 n.a. n.a. 3625.4813 163.15757 -46.07559 2026-Jan-23 03:40 13 04 37.13 -08 17 08.0 97.198672 4.394264 n.a. n.a. 0.984348768262 -4.6240368 0.00008725328123 -4.6046979 104.7035 /L 75.2909 155.6/ 18.5798 n.a. n.a. 5300.9888 159.04399 -39.47416 2026-Jan-23 03:50 13 36 25.97 -24 57 56.6 114.347853 8.228533 n.a. n.a. 0.984329197349 -5.1169278 0.00007025343746 -3.7012910 91.2128 /L 88.7824 140.9/ 18.6469 n.a. n.a. 8096.7989 151.68980 -28.29417 2026-Jan-23 04:00 e 14 58 17.98 -46 52 12.5 140.764789 7.947568 n.a. n.a. 0.984307923968 -5.4310033 0.00005939090978 -1.4423892 69.4870 /L 110.5090 115.1/ 18.7149 n.a. n.a. 11404.691 133.12809 -9.994364 2026-Jan-23 04:10 18 28 40.43 -58 14 32.7 171.430790 -0.186869 n.a. n.a. 0.984286226504 -5.2841581 0.00006016075074 1.8286017 43.7303 /L 136.2667 82.6/ 18.7837 n.a. n.a. 11501.708 82.857787 12.327259 >..... Elevation Cut-off Requested .....< >..... Daylight Cut-off Requested .....< >..... 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 ***************************************************************************************************************************************************************************************************************************************************