******************************************************************************* JPL/HORIZONS 90482 Orcus (2004 DW) 2024-May-03 11:08:00 Rec #: 90482 (+COV) Soln.date: 2024-Apr-17_07:00:26 # obs: 1765 (1951-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457752.5 ! 2016-Dec-30.00 (TDB) Residual RMS= .18478 EC= .2188816095853412 QR= 30.80562850322123 TP= 2413403.7755648284 OM= 268.6567085586656 W= 72.61849745537482 IN= 20.57510156051171 A= 39.43784819464816 MA= 176.4880849054844 ADIST= 48.07006788607509 PER= 247.67263 N= .003979553 ANGMOM= .10540889 DAN= 35.24392 DDN= 40.17536 L= 340.1691356 B= 19.5960857 MOID= 29.85549927 TP= 1895-Jul-29.2755648284 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 13.188 H= 2.17 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#51, OCC=1 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 3 11:08:00 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 90482 Orcus (2004 DW) {source: JPL#51} Center body name: Solar System Barycenter (0) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2000-Jan-01 00:00:00.0000 TDB Stop time : A.D. 2100-Jan-01 00:00:00.0000 TDB Step-size : 400 calendar years ******************************************************************************* Center geodetic : 0.0, 0.0, 0.0 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center radii : (undefined) Keplerian GM : 2.9630927493968080E-04 au^3/d^2 Small perturbers: Yes {source: SB441-N16} Output units : AU-D, deg, Julian Day Number (Tp) Calendar mode : Mixed Julian/Gregorian Output type : GEOMETRIC osculating elements Output format : 10 Reference frame : Ecliptic of J2000.0 ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2457752.5 ! 2016-Dec-30.00 (TDB) Residual RMS= .18478 EC= .2188816095853412 QR= 30.80562850322123 TP= 2413403.7755648284 OM= 268.6567085586656 W= 72.61849745537482 IN= 20.57510156051171 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-4.197198579436491E+01 Y= 2.208790286554933E+01 Z=-7.756237606680539E+00 VX=-7.616243847089352E-04 VY=-1.764619034299811E-03 VZ=-1.057020748197760E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 13.188 H= 2.17 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2451544.500000000 = A.D. 2000-Jan-01 00:00:00.0000 TDB EC= 2.238493715354547E-01 QR= 3.048709710371958E+01 IN= 2.056780682793598E+01 OM= 2.685849227030817E+02 W = 7.302693939101574E+01 Tp= 2413840.720132210292 N = 4.006269534493289E-03 MA= 1.510515046195672E+02 TA= 1.609651560528636E+02 A = 3.927987169711123E+01 AD= 4.807264629050288E+01 PR= 8.985915623011935E+04 $$EOE ******************************************************************************* TIME Barycentric Dynamical Time ("TDB" or T_eph) output was requested. This continuous coordinate time is equivalent to the relativistic proper time of a clock at rest in a reference frame co-moving with the solar system barycenter but outside the system's gravity well. It is the independent variable in the solar system relativistic equations of motion. TDB runs at a uniform rate of one SI second per second and is independent of irregularities in Earth's rotation. 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. REFERENCE FRAME AND COORDINATES Ecliptic at the standard reference epoch Reference epoch: J2000.0 X-Y plane: adopted Earth orbital plane at the reference epoch Note: IAU76 obliquity of 84381.448 arcseconds wrt ICRF X-Y plane X-axis : ICRF Z-axis : perpendicular to the X-Y plane in the directional (+ or -) sense of Earth's north pole at the reference epoch. Symbol meaning [1 au= 149597870.700 km, 1 day= 86400.0 s]: JDTDB Julian Day Number, Barycentric Dynamical Time EC Eccentricity, e QR Periapsis distance, q (au) IN Inclination w.r.t X-Y plane, i (degrees) OM Longitude of Ascending Node, OMEGA, (degrees) W Argument of Perifocus, w (degrees) Tp Time of periapsis (Julian Day Number) N Mean motion, n (degrees/day) MA Mean anomaly, M (degrees) TA True anomaly, nu (degrees) A Semi-major axis, a (au) AD Apoapsis distance (au) PR Sidereal orbit period (day) ABERRATIONS AND CORRECTIONS Geometric osculating elements have NO corrections or aberrations applied. 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 ******************************************************************************* !$$SOF COMMAND = '90482' TABLE_TYPE = 'ELEMENTS' START_TIME = '2000-01-01' STOP_TIME = '2100-01-01' STEP_SIZE = '400 years' CENTER = '@0' OUT_UNITS = 'AU-D'