API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 28978 Ixion (2001 KX76) 2024-Apr-27 20:33:18 Rec #: 28978 (+COV) Soln.date: 2024-Feb-21_08:56:52 # obs: 590 (1982-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458003.5 ! 2017-Sep-07.00 (TDB) Residual RMS= .075678 EC= .2418414354067134 QR= 30.07112418434212 TP= 2477290.5810889825 OM= 70.99623775199329 W= 298.8358378061579 IN= 19.58703444758994 A= 39.66337068351097 MA= 283.8997379713952 ADIST= 49.25561718267981 PER= 249.80011 N= .00394566 ANGMOM= .105120967 DAN= 33.44278 DDN= 42.27449 L= 11.2976517 B= -17.0778353 MOID= 29.11639977 TP= 2070-Jun-28.0810889825 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 3.47 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#21, OCC=0 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sat Apr 27 20:33:18 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 28978 Ixion (2001 KX76) {source: JPL#21} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2070-Sep-21 00:00:00.0000 UT Stop time : A.D. 2070-Sep-27 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= 2458003.5 ! 2017-Sep-07.00 (TDB) Residual RMS= .075678 EC= .2418414354067134 QR= 30.07112418434212 TP= 2477290.5810889825 OM= 70.99623775199329 W= 298.8358378061579 IN= 19.58703444758994 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-3.407212578950042E+00 Y=-3.475542288214802E+01 Z=-1.878989477177768E+01 VX= 2.560555780070795E-03 VY= 7.901743758552907E-04 VZ=-5.315020592902799E-04 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 3.47 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2070-Sep-21 00:00 29.85784119334 -0.0004006 2070-Sep-21 03:00 29.85784116499 -0.0003848 2070-Sep-21 06:00 29.85784113778 -0.0003690 2070-Sep-21 09:00 29.85784111171 -0.0003532 2070-Sep-21 12:00 29.85784108678 -0.0003374 2070-Sep-21 15:00 29.85784106299 -0.0003216 2070-Sep-21 18:00 29.85784104034 -0.0003058 2070-Sep-21 21:00 29.85784101883 -0.0002900 2070-Sep-22 00:00 29.85784099847 -0.0002742 2070-Sep-22 03:00 29.85784097924 -0.0002584 2070-Sep-22 06:00 29.85784096116 -0.0002426 2070-Sep-22 09:00 29.85784094422 -0.0002268 2070-Sep-22 12:00 29.85784092841 -0.0002110 2070-Sep-22 15:00 29.85784091375 -0.0001952 2070-Sep-22 18:00 29.85784090023 -0.0001794 2070-Sep-22 21:00 29.85784088785 -0.0001636 2070-Sep-23 00:00 29.85784087662 -0.0001477 2070-Sep-23 03:00 29.85784086652 -0.0001319 2070-Sep-23 06:00 29.85784085757 -0.0001161 2070-Sep-23 09:00 29.85784084975 -0.0001003 2070-Sep-23 12:00 29.85784084308 -0.0000845 2070-Sep-23 15:00 29.85784083755 -0.0000687 2070-Sep-23 18:00 29.85784083317 -0.0000529 2070-Sep-23 21:00 29.85784082992 -0.0000371 2070-Sep-24 00:00 29.85784082781 -0.0000212 2070-Sep-24 03:00 29.85784082685 -0.0000054 2070-Sep-24 06:00 29.85784082703 0.0000104 2070-Sep-24 09:00 29.85784082835 0.0000262 2070-Sep-24 12:00 29.85784083081 0.0000420 2070-Sep-24 15:00 29.85784083442 0.0000578 2070-Sep-24 18:00 29.85784083917 0.0000737 2070-Sep-24 21:00 29.85784084505 0.0000895 2070-Sep-25 00:00 29.85784085209 0.0001053 2070-Sep-25 03:00 29.85784086026 0.0001211 2070-Sep-25 06:00 29.85784086957 0.0001369 2070-Sep-25 09:00 29.85784088003 0.0001528 2070-Sep-25 12:00 29.85784089163 0.0001686 2070-Sep-25 15:00 29.85784090437 0.0001844 2070-Sep-25 18:00 29.85784091826 0.0002002 2070-Sep-25 21:00 29.85784093328 0.0002160 2070-Sep-26 00:00 29.85784094945 0.0002319 2070-Sep-26 03:00 29.85784096676 0.0002477 2070-Sep-26 06:00 29.85784098521 0.0002635 2070-Sep-26 09:00 29.85784100481 0.0002793 2070-Sep-26 12:00 29.85784102555 0.0002952 2070-Sep-26 15:00 29.85784104743 0.0003110 2070-Sep-26 18:00 29.85784107045 0.0003268 2070-Sep-26 21:00 29.85784109462 0.0003426 2070-Sep-27 00:00 29.85784111993 0.0003585 $$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 *******************************************************************************