******************************************************************************* JPL/HORIZONS (2006 RH120) 2025-Dec-12 18:05:30 Rec #:50022245 (+COV) Soln.date: 2025-May-20_14:22:14 # obs: 132 (2006-2007) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2454099.5 ! 2006-Dec-30.00 (TDB) Residual RMS= .48178 EC= .03574810063215825 QR= .96035514878686 TP= 2454169.4403147777 OM= 49.64447431634257 W= 121.6218810603342 IN= .2831057718033617 A= .995958783608789 MA= 290.6463045025819 ADIST= 1.031562418430718 PER= .99396 N= .9916125730000001 ANGMOM= .017156332 DAN= 1.01369 DDN= .97639 L= 171.2666677 B= .2410719 MOID= .00375237 TP= 2007-Mar-09.9403147777 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= .04583 H= 29.5 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= 1.406618673354E-10 A2= -4.908956121653E-11 A3= -1.197467790917E-11 Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 0. R0= 1. ASTEROID comments: 1: soln ref.= JPL#54, OCC=2 radar( 0 delay, 2 Dop.) 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 18:05:31 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2006 RH120) {source: JPL#54} Center body name: Earth (399) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2007-Sep-17 00:00:00.0000 TDB Stop time : A.D. 2007-Sep-18 00:00:00.0000 TDB Step-size : 1440 minutes ******************************************************************************* 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 : 8.8876924467071033E-10 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 EOP file : eop.251212.p260310 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-DEC-12. PREDICTS-> 2026-MAR-09 Reference frame : Ecliptic of J2000.0 ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2454099.5 ! 2006-Dec-30.00 (TDB) Residual RMS= .48178 EC= .03574810063215825 QR= .96035514878686 TP= 2454169.4403147777 OM= 49.64447431634257 W= 121.6218810603342 IN= .2831057718033617 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.373719648819976E-01 Y= 8.930090544244500E-01 Z= 3.911303778451980E-01 VX=-1.717276970201984E-02 VY=-2.789225675551798E-03 VZ=-1.149318338553825E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= .04583 H= 29.5 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= 1.406618673354E-10 A2= -4.908956121653E-11 A3= -1.197467790917E-11 Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 0. R0= 1. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2454360.500000000 = A.D. 2007-Sep-17 00:00:00.0000 TDB EC= 9.358357211230282E-01 QR= 1.610014708177740E-02 IN= 4.210441426891668E+01 OM= 3.328351233084932E+02 W = 2.641749847276204E+02 Tp= 2454303.882003722712 N = 1.358977769731134E-02 MA= 7.694259830779967E-01 TA= 5.577418835574663E+01 A = 2.509207204314995E-01 AD= 4.857412937812216E-01 PR= 2.649049955182298E+04 2454361.500000000 = A.D. 2007-Sep-18 00:00:00.0000 TDB EC= 1.013153809565934E+00 QR= 1.655358673433488E-02 IN= 4.156756285289374E+01 OM= 3.335090221448201E+02 W = 2.680272636364047E+02 Tp= 2454308.228065541945 N = 1.209919018360145E-03 MA= 6.445472664574557E-02 TA= 5.215068464088281E+01 A =-1.258463310675052E+00 AD= 9.999999999999998E+99 PR= 9.999999999999998E+99 $$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 [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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF CENTER = '@399' COMMAND = '2006 RH120' OUT_UNITS = 'AU-D' START_TIME = '2007-Sep-17' STEP_SIZE = '1 day' STOP_TIME = '2007-Sep-18' TABLE_TYPE = 'ELEMENTS'