******************************************************************************* JPL/HORIZONS 469219 Kamo`oalewa (2016 HO3) 2024-May-02 16:09:07 Rec #: 469219 (+COV) Soln.date: 2024-Mar-28_05:48:41 # obs: 322 (2004-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457871.5 ! 2017-Apr-28.00 (TDB) Residual RMS= .081513 EC= .1040287332682467 QR= .8969174933439372 TP= 2458029.6185367191 OM= 66.4320667959238 W= 307.0810358408148 IN= 7.775150858519338 A= 1.001056090353919 MA= 204.4037083420065 ADIST= 1.105194687363901 PER= 1.0016 N= .984048391 ANGMOM= .017117797 DAN= .9317800000000001 DDN= 1.05649 L= 13.7679653 B= -6.1959361 MOID= .0341951 TP= 2017-Oct-03.1185367191 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= .467 H= 24.33 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 0. A2= -1.363750288874E-13 A3= 0. Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 5.093 R0= 1. ASTEROID comments: 1: soln ref.= JPL#33, OCC=0 2: source=ORB; Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 2 16:09:07 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 469219 Kamo`oalewa (2016 HO3) {source: JPL#33} Center body name: Earth (399) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2022-Jan-21 00:00:00.0000 TDB Stop time : A.D. 2100-Jan-01 00:00:00.0000 TDB Step-size : 100 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 : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Keplerian GM : 3.9860043550702260E+05 km^3/s^2 Small perturbers: Yes {source: SB441-N16} Output units : KM-S, deg, Julian Day Number (Tp) Calendar mode : Mixed Julian/Gregorian Output type : GEOMETRIC osculating elements Output format : 10 EOP file : eop.240502.p240726 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-02. PREDICTS-> 2024-JUL-25 Reference frame : Ecliptic of J2000.0 ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2457871.5 ! 2017-Apr-28.00 (TDB) Residual RMS= .081513 EC= .1040287332682467 QR= .8969174933439372 TP= 2458029.6185367191 OM= 66.4320667959238 W= 307.0810358408148 IN= 7.775150858519338 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-9.099665244445362E-01 Y=-5.901513011030828E-01 Z=-1.679288350591119E-01 VX= 9.012686118152291E-03 VY=-1.085064240119378E-02 VZ=-6.684325790984331E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= .467 H= 24.33 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 0. A2= -1.363750288874E-13 A3= 0. Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 5.093 R0= 1. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2459600.500000000 = A.D. 2022-Jan-21 00:00:00.0000 TDB EC= 8.854834235123091E+02 QR= 3.052591192183557E+07 IN= 6.792607068290590E+01 OM= 1.791860733136843E+02 W = 4.960374036834001E+01 Tp= 2459615.405199931003 N = 5.641870243815554E-03 MA=-7.265652822943886E+03 TA= 3.518318709871253E+02 A =-3.451270098496172E+04 AD= 9.999999999999998E+99 PR= 9.999999999999998E+99 $$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: JDTDB Julian Day Number, Barycentric Dynamical Time EC Eccentricity, e QR Periapsis distance, q (km) 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/sec) MA Mean anomaly, M (degrees) TA True anomaly, nu (degrees) A Semi-major axis, a (km) AD Apoapsis distance (km) PR Sidereal orbit period (sec) 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 = '469219' TABLE_TYPE = 'ELEMENTS' START_TIME = '2022-Jan-21' STOP_TIME = '2100-Jan-01' STEP_SIZE = '100 years'