API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 90482 Orcus (2004 DW) 2025-Dec-12 17:53:04 Rec #: 90482 (+COV) Soln.date: 2025-Nov-27_17:30:47 # obs: 1986 (1951-2025) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458026.5 ! 2017-Sep-30.00 (TDB) Residual RMS= .1909 EC= .2201925410340398 QR= 30.72002019684577 TP= 2413410.2764653899 OM= 268.7211853042133 W= 72.37822236875702 IN= 20.58307869716507 A= 39.39436567788299 MA= 177.8466599716318 ADIST= 48.06871115892021 PER= 247.26313 N= .003986143 ANGMOM= .105318914 DAN= 35.14181 DDN= 40.16148 L= 339.9792847 B= 19.5766867 MOID= 29.77090073 TP= 1895-Aug-04.7764653899 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 13.188 H= 2.14 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#59, OCC=1 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Fri Dec 12 17:53:05 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: 90482 Orcus (2004 DW) {source: JPL#59} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2143-Jan-05 00:00:00.0000 UT Stop time : A.D. 2143-Jan-15 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined 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= 2458026.5 ! 2017-Sep-30.00 (TDB) Residual RMS= .1909 EC= .2201925410340398 QR= 30.72002019684577 TP= 2413410.2764653899 OM= 268.7211853042133 W= 72.37822236875702 IN= 20.58307869716507 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-4.217609126856852E+01 Y= 2.160231981508338E+01 Z=-8.045032806834760E+00 VX=-7.283777044544209E-04 VY=-1.779535489382176E-03 VZ=-1.050851023190944E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 13.188 H= 2.14 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2143-Jan-05 00:00 30.49326885464 -0.0009329 2143-Jan-05 03:00 30.49326878783 -0.0009181 2143-Jan-05 06:00 30.49326872208 -0.0009033 2143-Jan-05 09:00 30.49326865741 -0.0008885 2143-Jan-05 12:00 30.49326859380 -0.0008737 2143-Jan-05 15:00 30.49326853126 -0.0008589 2143-Jan-05 18:00 30.49326846979 -0.0008441 2143-Jan-05 21:00 30.49326840939 -0.0008293 2143-Jan-06 00:00 30.49326835006 -0.0008145 2143-Jan-06 03:00 30.49326829179 -0.0007997 2143-Jan-06 06:00 30.49326823459 -0.0007849 2143-Jan-06 09:00 30.49326817847 -0.0007701 2143-Jan-06 12:00 30.49326812341 -0.0007553 2143-Jan-06 15:00 30.49326806941 -0.0007405 2143-Jan-06 18:00 30.49326801649 -0.0007257 2143-Jan-06 21:00 30.49326796464 -0.0007109 2143-Jan-07 00:00 30.49326791385 -0.0006961 2143-Jan-07 03:00 30.49326786414 -0.0006813 2143-Jan-07 06:00 30.49326781549 -0.0006665 2143-Jan-07 09:00 30.49326776791 -0.0006517 2143-Jan-07 12:00 30.49326772140 -0.0006369 2143-Jan-07 15:00 30.49326767595 -0.0006221 2143-Jan-07 18:00 30.49326763158 -0.0006073 2143-Jan-07 21:00 30.49326758828 -0.0005925 2143-Jan-08 00:00 30.49326754604 -0.0005777 2143-Jan-08 03:00 30.49326750487 -0.0005629 2143-Jan-08 06:00 30.49326746478 -0.0005481 2143-Jan-08 09:00 30.49326742575 -0.0005332 2143-Jan-08 12:00 30.49326738779 -0.0005184 2143-Jan-08 15:00 30.49326735090 -0.0005036 2143-Jan-08 18:00 30.49326731508 -0.0004888 2143-Jan-08 21:00 30.49326728032 -0.0004740 2143-Jan-09 00:00 30.49326724664 -0.0004592 2143-Jan-09 03:00 30.49326721403 -0.0004444 2143-Jan-09 06:00 30.49326718248 -0.0004296 2143-Jan-09 09:00 30.49326715200 -0.0004148 2143-Jan-09 12:00 30.49326712260 -0.0004000 2143-Jan-09 15:00 30.49326709426 -0.0003851 2143-Jan-09 18:00 30.49326706699 -0.0003703 2143-Jan-09 21:00 30.49326704080 -0.0003555 2143-Jan-10 00:00 30.49326701567 -0.0003407 2143-Jan-10 03:00 30.49326699161 -0.0003259 2143-Jan-10 06:00 30.49326696862 -0.0003111 2143-Jan-10 09:00 30.49326694670 -0.0002962 2143-Jan-10 12:00 30.49326692585 -0.0002814 2143-Jan-10 15:00 30.49326690607 -0.0002666 2143-Jan-10 18:00 30.49326688735 -0.0002518 2143-Jan-10 21:00 30.49326686971 -0.0002370 2143-Jan-11 00:00 30.49326685314 -0.0002222 2143-Jan-11 03:00 30.49326683764 -0.0002073 2143-Jan-11 06:00 30.49326682321 -0.0001925 2143-Jan-11 09:00 30.49326680985 -0.0001777 2143-Jan-11 12:00 30.49326679755 -0.0001629 2143-Jan-11 15:00 30.49326678633 -0.0001480 2143-Jan-11 18:00 30.49326677618 -0.0001332 2143-Jan-11 21:00 30.49326676710 -0.0001184 2143-Jan-12 00:00 30.49326675908 -0.0001036 2143-Jan-12 03:00 30.49326675214 -0.0000888 2143-Jan-12 06:00 30.49326674627 -0.0000739 2143-Jan-12 09:00 30.49326674147 -0.0000591 2143-Jan-12 12:00 30.49326673774 -0.0000443 2143-Jan-12 15:00 30.49326673508 -0.0000294 2143-Jan-12 18:00 30.49326673348 -0.0000146 2143-Jan-12 21:00 30.49326673296 0.0000002 2143-Jan-13 00:00 30.49326673351 0.0000150 2143-Jan-13 03:00 30.49326673514 0.0000299 2143-Jan-13 06:00 30.49326673783 0.0000447 2143-Jan-13 09:00 30.49326674159 0.0000595 2143-Jan-13 12:00 30.49326674642 0.0000744 2143-Jan-13 15:00 30.49326675232 0.0000892 2143-Jan-13 18:00 30.49326675930 0.0001040 2143-Jan-13 21:00 30.49326676734 0.0001189 2143-Jan-14 00:00 30.49326677646 0.0001337 2143-Jan-14 03:00 30.49326678664 0.0001485 2143-Jan-14 06:00 30.49326679790 0.0001634 2143-Jan-14 09:00 30.49326681023 0.0001782 2143-Jan-14 12:00 30.49326682363 0.0001930 2143-Jan-14 15:00 30.49326683810 0.0002079 2143-Jan-14 18:00 30.49326685364 0.0002227 2143-Jan-14 21:00 30.49326687025 0.0002375 2143-Jan-15 00:00 30.49326688793 0.0002524 $$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. '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 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 *******************************************************************************