API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 90482 Orcus (2004 DW) 2024-Apr-26 22:44:39 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 / API_USER Fri Apr 26 22:44:40 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 90482 Orcus (2004 DW) {source: JPL#51} 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.240426.p240720 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-26. PREDICTS-> 2024-JUL-19 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= 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. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2143-Jan-05 00:00 30.49326240356 -0.0009448 2143-Jan-05 03:00 30.49326233589 -0.0009300 2143-Jan-05 06:00 30.49326226929 -0.0009152 2143-Jan-05 09:00 30.49326220376 -0.0009004 2143-Jan-05 12:00 30.49326213929 -0.0008856 2143-Jan-05 15:00 30.49326207590 -0.0008708 2143-Jan-05 18:00 30.49326201357 -0.0008560 2143-Jan-05 21:00 30.49326195231 -0.0008412 2143-Jan-06 00:00 30.49326189212 -0.0008264 2143-Jan-06 03:00 30.49326183299 -0.0008116 2143-Jan-06 06:00 30.49326177494 -0.0007968 2143-Jan-06 09:00 30.49326171795 -0.0007820 2143-Jan-06 12:00 30.49326166204 -0.0007672 2143-Jan-06 15:00 30.49326160719 -0.0007524 2143-Jan-06 18:00 30.49326155341 -0.0007376 2143-Jan-06 21:00 30.49326150069 -0.0007228 2143-Jan-07 00:00 30.49326144905 -0.0007080 2143-Jan-07 03:00 30.49326139847 -0.0006932 2143-Jan-07 06:00 30.49326134897 -0.0006784 2143-Jan-07 09:00 30.49326130053 -0.0006636 2143-Jan-07 12:00 30.49326125316 -0.0006488 2143-Jan-07 15:00 30.49326120686 -0.0006340 2143-Jan-07 18:00 30.49326116163 -0.0006192 2143-Jan-07 21:00 30.49326111747 -0.0006044 2143-Jan-08 00:00 30.49326107438 -0.0005896 2143-Jan-08 03:00 30.49326103235 -0.0005748 2143-Jan-08 06:00 30.49326099140 -0.0005599 2143-Jan-08 09:00 30.49326095151 -0.0005451 2143-Jan-08 12:00 30.49326091269 -0.0005303 2143-Jan-08 15:00 30.49326087494 -0.0005155 2143-Jan-08 18:00 30.49326083826 -0.0005007 2143-Jan-08 21:00 30.49326080265 -0.0004859 2143-Jan-09 00:00 30.49326076811 -0.0004711 2143-Jan-09 03:00 30.49326073464 -0.0004563 2143-Jan-09 06:00 30.49326070224 -0.0004415 2143-Jan-09 09:00 30.49326067090 -0.0004266 2143-Jan-09 12:00 30.49326064064 -0.0004118 2143-Jan-09 15:00 30.49326061144 -0.0003970 2143-Jan-09 18:00 30.49326058332 -0.0003822 2143-Jan-09 21:00 30.49326055626 -0.0003674 2143-Jan-10 00:00 30.49326053028 -0.0003526 2143-Jan-10 03:00 30.49326050536 -0.0003378 2143-Jan-10 06:00 30.49326048151 -0.0003229 2143-Jan-10 09:00 30.49326045873 -0.0003081 2143-Jan-10 12:00 30.49326043702 -0.0002933 2143-Jan-10 15:00 30.49326041639 -0.0002785 2143-Jan-10 18:00 30.49326039682 -0.0002637 2143-Jan-10 21:00 30.49326037832 -0.0002489 2143-Jan-11 00:00 30.49326036089 -0.0002340 2143-Jan-11 03:00 30.49326034453 -0.0002192 2143-Jan-11 06:00 30.49326032924 -0.0002044 2143-Jan-11 09:00 30.49326031502 -0.0001896 2143-Jan-11 12:00 30.49326030187 -0.0001748 2143-Jan-11 15:00 30.49326028979 -0.0001599 2143-Jan-11 18:00 30.49326027878 -0.0001451 2143-Jan-11 21:00 30.49326026884 -0.0001303 2143-Jan-12 00:00 30.49326025997 -0.0001155 2143-Jan-12 03:00 30.49326025217 -0.0001006 2143-Jan-12 06:00 30.49326024544 -0.0000858 2143-Jan-12 09:00 30.49326023978 -0.0000710 2143-Jan-12 12:00 30.49326023519 -0.0000562 2143-Jan-12 15:00 30.49326023167 -0.0000413 2143-Jan-12 18:00 30.49326022922 -0.0000265 2143-Jan-12 21:00 30.49326022784 -0.0000117 2143-Jan-13 00:00 30.49326022754 0.0000032 2143-Jan-13 03:00 30.49326022830 0.0000180 2143-Jan-13 06:00 30.49326023013 0.0000328 2143-Jan-13 09:00 30.49326023304 0.0000476 2143-Jan-13 12:00 30.49326023701 0.0000625 2143-Jan-13 15:00 30.49326024206 0.0000773 2143-Jan-13 18:00 30.49326024817 0.0000921 2143-Jan-13 21:00 30.49326025536 0.0001070 2143-Jan-14 00:00 30.49326026362 0.0001218 2143-Jan-14 03:00 30.49326027294 0.0001366 2143-Jan-14 06:00 30.49326028334 0.0001515 2143-Jan-14 09:00 30.49326029481 0.0001663 2143-Jan-14 12:00 30.49326030736 0.0001811 2143-Jan-14 15:00 30.49326032097 0.0001960 2143-Jan-14 18:00 30.49326033565 0.0002108 2143-Jan-14 21:00 30.49326035141 0.0002257 2143-Jan-15 00:00 30.49326036823 0.0002405 $$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/hrzn_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov *******************************************************************************