******************************************************************************* JPL/HORIZONS 228 Agathe (A882 QA) 2025-Dec-12 17:58:48 Rec #: 228 (+COV) Soln.date: 2025-Nov-06_14:59:54 # obs: 5960 (1892-2025) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458034.5 ! 2017-Oct-08.00 (TDB) Residual RMS= .2502 EC= .2422993209350006 QR= 1.667651821104638 TP= 2457603.4636639967 OM= 313.3446923211637 W= 19.08431338927448 IN= 2.536471920168256 A= 2.20093747726677 MA= 130.1087180680703 ADIST= 2.734223133428902 PER= 3.26527 N= .301850928 ANGMOM= .024759807 DAN= 1.68572 DDN= 2.687 L= 332.4116587 B= .8290808 MOID= .65730602 TP= 2016-Aug-02.9636639967 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= 4.65 ROTPER= 6.484 H= 12.26 G= .150 B-V= .918 ALBEDO= .2082 STYP= S ASTEROID comments: 1: soln ref.= JPL#76, OCC=0 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 17:58:48 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: 228 Agathe (A882 QA) {source: JPL#76} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2029-Aug-23 07:00:00.0000 UT Stop time : A.D. 2029-Aug-23 08:00:00.0000 UT Step-size : 60 steps ******************************************************************************* Target pole/equ : undefined Target radii : 4.65 km Center geodetic : 0.0, 0.0, -6378.137 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {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 : Sun 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 Small-body perts: Yes {source: SB441-N16} Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Calendar mode : Mixed Julian/Gregorian EOP file : eop.251212.p260310 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-DEC-12. PREDICTS-> 2026-MAR-09 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO ) Table cut-offs 2: Solar elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2458034.5 ! 2017-Oct-08.00 (TDB) Residual RMS= .2502 EC= .2422993209350006 QR= 1.667651821104638 TP= 2457603.4636639967 OM= 313.3446923211637 W= 19.08431338927448 IN= 2.536471920168256 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.303644830889242E+00 Y= 2.058023164728738E+00 Z= 9.212073660851694E-01 VX=-9.000968177316205E-03 VY=-2.969404808415966E-03 VZ=-1.716360959985530E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= 4.65 ROTPER= 6.484 H= 12.26 G= .150 B-V= .918 ALBEDO= .2082 STYP= S **************************************************************************************************************************************************** Date__(UT)__HR:MN:SC.fff r rdot delta deldot VmagSn VmagOb S-O-T /r RNG_3sigma RNGRT_3sig **************************************************************************************************************************************************** $$SOE 2029-Aug-23 07:00:00.000 1.670581768583 -0.1895732 0.65966389492259 -0.0051095 25.6727864 3.9424401 177.9208 /L 0.8073 0.0000007 2029-Aug-23 07:01:00.000 1.670581692556 -0.1895425 0.65966389291901 -0.0048816 25.6727874 3.9424408 177.9211 /L 0.8074 0.0000007 2029-Aug-23 07:02:00.000 1.670581616541 -0.1895118 0.65966389100681 -0.0046538 25.6727883 3.9424416 177.9214 /L 0.8074 0.0000007 2029-Aug-23 07:03:00.000 1.670581540539 -0.1894810 0.65966388918599 -0.0044259 25.6727893 3.9424423 177.9217 /L 0.8074 0.0000007 2029-Aug-23 07:04:00.000 1.670581464549 -0.1894503 0.65966388745657 -0.0041980 25.6727902 3.9424431 177.9220 /L 0.8075 0.0000007 2029-Aug-23 07:05:00.000 1.670581388571 -0.1894196 0.65966388581853 -0.0039702 25.6727911 3.9424439 177.9223 /L 0.8075 0.0000007 2029-Aug-23 07:06:00.000 1.670581312606 -0.1893888 0.65966388427187 -0.0037423 25.6727921 3.9424447 177.9226 /L 0.8075 0.0000007 2029-Aug-23 07:07:00.000 1.670581236653 -0.1893581 0.65966388281660 -0.0035145 25.6727930 3.9424455 177.9228 /L 0.8075 0.0000007 2029-Aug-23 07:08:00.000 1.670581160712 -0.1893274 0.65966388145272 -0.0032866 25.6727940 3.9424463 177.9231 /L 0.8076 0.0000007 2029-Aug-23 07:09:00.000 1.670581084784 -0.1892966 0.65966388018023 -0.0030588 25.6727949 3.9424471 177.9234 /L 0.8076 0.0000007 2029-Aug-23 07:10:00.000 1.670581008868 -0.1892659 0.65966387899912 -0.0028309 25.6727959 3.9424479 177.9237 /L 0.8076 0.0000007 2029-Aug-23 07:11:00.000 1.670580932964 -0.1892352 0.65966387790940 -0.0026031 25.6727968 3.9424487 177.9240 /L 0.8076 0.0000007 2029-Aug-23 07:12:00.000 1.670580857073 -0.1892044 0.65966387691107 -0.0023752 25.6727978 3.9424496 177.9243 /L 0.8077 0.0000007 2029-Aug-23 07:13:00.000 1.670580781193 -0.1891737 0.65966387600412 -0.0021474 25.6727987 3.9424504 177.9246 /L 0.8077 0.0000007 2029-Aug-23 07:14:00.000 1.670580705327 -0.1891430 0.65966387518856 -0.0019195 25.6727997 3.9424513 177.9249 /L 0.8077 0.0000007 2029-Aug-23 07:15:00.000 1.670580629472 -0.1891123 0.65966387446439 -0.0016917 25.6728006 3.9424522 177.9252 /L 0.8078 0.0000007 2029-Aug-23 07:16:00.000 1.670580553630 -0.1890815 0.65966387383161 -0.0014638 25.6728015 3.9424530 177.9255 /L 0.8078 0.0000007 2029-Aug-23 07:17:00.000 1.670580477801 -0.1890508 0.65966387329021 -0.0012359 25.6728025 3.9424539 177.9257 /L 0.8078 0.0000007 2029-Aug-23 07:18:00.000 1.670580401983 -0.1890201 0.65966387284020 -0.0010081 25.6728034 3.9424548 177.9260 /L 0.8078 0.0000007 2029-Aug-23 07:19:00.000 1.670580326178 -0.1889893 0.65966387248157 -0.0007802 25.6728044 3.9424557 177.9263 /L 0.8079 0.0000007 2029-Aug-23 07:20:00.000 1.670580250385 -0.1889586 0.65966387221433 -0.0005524 25.6728053 3.9424567 177.9266 /L 0.8079 0.0000007 2029-Aug-23 07:21:00.000 1.670580174605 -0.1889279 0.65966387203848 -0.0003245 25.6728063 3.9424576 177.9269 /L 0.8079 0.0000007 2029-Aug-23 07:22:00.000 1.670580098837 -0.1888971 0.65966387195402 -0.0000967 25.6728072 3.9424585 177.9272 /L 0.8079 0.0000007 2029-Aug-23 07:23:00.000 1.670580023081 -0.1888664 0.65966387196095 0.0001312 25.6728082 3.9424595 177.9275 /L 0.8080 0.0000007 2029-Aug-23 07:24:00.000 1.670579947337 -0.1888357 0.65966387205926 0.0003591 25.6728091 3.9424604 177.9278 /L 0.8080 0.0000007 2029-Aug-23 07:25:00.000 1.670579871606 -0.1888049 0.65966387224896 0.0005869 25.6728100 3.9424614 177.9281 /L 0.8080 0.0000007 2029-Aug-23 07:26:00.000 1.670579795887 -0.1887742 0.65966387253005 0.0008148 25.6728110 3.9424623 177.9283 /L 0.8081 0.0000007 2029-Aug-23 07:27:00.000 1.670579720181 -0.1887435 0.65966387290252 0.0010426 25.6728119 3.9424633 177.9286 /L 0.8081 0.0000007 2029-Aug-23 07:28:00.000 1.670579644487 -0.1887127 0.65966387336638 0.0012705 25.6728129 3.9424643 177.9289 /L 0.8081 0.0000007 2029-Aug-23 07:29:00.000 1.670579568805 -0.1886820 0.65966387392163 0.0014983 25.6728138 3.9424653 177.9292 /L 0.8081 0.0000007 2029-Aug-23 07:30:00.000 1.670579493135 -0.1886513 0.65966387456827 0.0017262 25.6728148 3.9424663 177.9295 /L 0.8082 0.0000007 2029-Aug-23 07:31:00.000 1.670579417478 -0.1886205 0.65966387530630 0.0019540 25.6728157 3.9424673 177.9298 /L 0.8082 0.0000007 2029-Aug-23 07:32:00.000 1.670579341833 -0.1885898 0.65966387613571 0.0021819 25.6728166 3.9424684 177.9301 /L 0.8082 0.0000007 2029-Aug-23 07:33:00.000 1.670579266201 -0.1885591 0.65966387705651 0.0024098 25.6728176 3.9424694 177.9303 /L 0.8082 0.0000007 2029-Aug-23 07:34:00.000 1.670579190581 -0.1885283 0.65966387806870 0.0026376 25.6728185 3.9424704 177.9306 /L 0.8083 0.0000007 2029-Aug-23 07:35:00.000 1.670579114973 -0.1884976 0.65966387917228 0.0028655 25.6728195 3.9424715 177.9309 /L 0.8083 0.0000007 2029-Aug-23 07:36:00.000 1.670579039377 -0.1884669 0.65966388036724 0.0030933 25.6728204 3.9424726 177.9312 /L 0.8083 0.0000007 2029-Aug-23 07:37:00.000 1.670578963794 -0.1884361 0.65966388165360 0.0033212 25.6728214 3.9424736 177.9315 /L 0.8084 0.0000007 2029-Aug-23 07:38:00.000 1.670578888223 -0.1884054 0.65966388303134 0.0035490 25.6728223 3.9424747 177.9318 /L 0.8084 0.0000007 2029-Aug-23 07:39:00.000 1.670578812665 -0.1883747 0.65966388450047 0.0037769 25.6728232 3.9424758 177.9320 /L 0.8084 0.0000007 2029-Aug-23 07:40:00.000 1.670578737118 -0.1883439 0.65966388606098 0.0040048 25.6728242 3.9424769 177.9323 /L 0.8084 0.0000007 2029-Aug-23 07:41:00.000 1.670578661584 -0.1883132 0.65966388771289 0.0042326 25.6728251 3.9424780 177.9326 /L 0.8085 0.0000007 2029-Aug-23 07:42:00.000 1.670578586063 -0.1882825 0.65966388945618 0.0044605 25.6728261 3.9424791 177.9329 /L 0.8085 0.0000007 2029-Aug-23 07:43:00.000 1.670578510553 -0.1882517 0.65966389129087 0.0046883 25.6728270 3.9424803 177.9332 /L 0.8085 0.0000007 2029-Aug-23 07:44:00.000 1.670578435057 -0.1882210 0.65966389321694 0.0049162 25.6728279 3.9424814 177.9335 /L 0.8085 0.0000007 2029-Aug-23 07:45:00.000 1.670578359572 -0.1881903 0.65966389523440 0.0051441 25.6728289 3.9424826 177.9337 /L 0.8086 0.0000007 2029-Aug-23 07:46:00.000 1.670578284100 -0.1881595 0.65966389734324 0.0053719 25.6728298 3.9424837 177.9340 /L 0.8086 0.0000007 2029-Aug-23 07:47:00.000 1.670578208640 -0.1881288 0.65966389954348 0.0055998 25.6728308 3.9424849 177.9343 /L 0.8086 0.0000007 2029-Aug-23 07:48:00.000 1.670578133192 -0.1880981 0.65966390183511 0.0058276 25.6728317 3.9424861 177.9346 /L 0.8087 0.0000007 2029-Aug-23 07:49:00.000 1.670578057757 -0.1880673 0.65966390421812 0.0060555 25.6728326 3.9424872 177.9349 /L 0.8087 0.0000007 2029-Aug-23 07:50:00.000 1.670577982334 -0.1880366 0.65966390669252 0.0062834 25.6728336 3.9424884 177.9351 /L 0.8087 0.0000007 2029-Aug-23 07:51:00.000 1.670577906923 -0.1880059 0.65966390925831 0.0065112 25.6728345 3.9424896 177.9354 /L 0.8087 0.0000007 2029-Aug-23 07:52:00.000 1.670577831525 -0.1879751 0.65966391191549 0.0067391 25.6728355 3.9424908 177.9357 /L 0.8088 0.0000007 2029-Aug-23 07:53:00.000 1.670577756139 -0.1879444 0.65966391466406 0.0069669 25.6728364 3.9424921 177.9360 /L 0.8088 0.0000007 2029-Aug-23 07:54:00.000 1.670577680765 -0.1879137 0.65966391750402 0.0071948 25.6728373 3.9424933 177.9363 /L 0.8088 0.0000007 2029-Aug-23 07:55:00.000 1.670577605404 -0.1878829 0.65966392043536 0.0074226 25.6728383 3.9424945 177.9365 /L 0.8088 0.0000007 2029-Aug-23 07:56:00.000 1.670577530055 -0.1878522 0.65966392345810 0.0076505 25.6728392 3.9424958 177.9368 /L 0.8089 0.0000007 2029-Aug-23 07:57:00.000 1.670577454718 -0.1878215 0.65966392657222 0.0078784 25.6728402 3.9424970 177.9371 /L 0.8089 0.0000007 2029-Aug-23 07:58:00.000 1.670577379394 -0.1877907 0.65966392977774 0.0081062 25.6728411 3.9424983 177.9374 /L 0.8089 0.0000007 2029-Aug-23 07:59:00.000 1.670577304082 -0.1877600 0.65966393307464 0.0083341 25.6728420 3.9424996 177.9377 /L 0.8090 0.0000007 2029-Aug-23 08:00:00.000 1.670577228782 -0.1877293 0.65966393646293 0.0085620 25.6728430 3.9425009 177.9379 /L 0.8090 0.0000007 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. '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 'VmagSn VmagOb' = Magnitude of target centers' velocity with respect to the Sun ("VmagSn") and the observer ("VmagOb") at the time light left the target center to be observed (print time minus down-leg light-time). These are absolute values of the velocity vectors (total speeds) and do NOT indicate direction of motion. Units: 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 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, KM/S 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 **************************************************************************************************************************************************** !$$SOF COMMAND = '228' QUANTITIES = '19,20,22,23,39' START_TIME = '2029-Aug-23 07:00' STEP_SIZE = '60' STOP_TIME = '2029-Aug-23 08:00'