******************************************************************************* JPL/HORIZONS (2024 YR4) 2025-Dec-12 17:43:42 Rec #:50582929 (+COV) Soln.date: 2025-Jun-03_07:47:32 # obs: 477 (2024-2025) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460705.5 ! 2025-Jan-30.00 (TDB) Residual RMS= .058675 EC= .6615999301423001 QR= .8515188266875525 TP= 2460636.9238411798 OM= 271.3674693540159 W= 134.3644983455991 IN= 3.408259321981154 A= 2.516308070047454 MA= 16.93290662173731 ADIST= 4.181097313407356 PER= 3.99166 N= .246921188 ANGMOM= .020461704 DAN= 2.63285 DDN= .96737 L= 45.7826715 B= 2.4358823 MOID= .00285384 TP= 2024-Nov-22.4238411798 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 23.92 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#78, OCC=3 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 17:43:42 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2024 YR4) {source: JPL#78} Center body name: Sun (10) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2025-May-05 00:00:00.0000 TDB Stop time : A.D. 2033-Apr-05 00:00:00.0000 TDB Step-size : 95 calendar months ******************************************************************************* 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 : 695700.0, 695700.0, 695700.0 km {Equator_a, b, pole_c} Keplerian GM : 2.9591220828411951E-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= 2460705.5 ! 2025-Jan-30.00 (TDB) Residual RMS= .058675 EC= .6615999301423001 QR= .8515188266875525 TP= 2460636.9238411798 OM= 271.3674693540159 W= 134.3644983455991 IN= 3.408259321981154 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-7.817185871179870E-01 Y= 9.591166659204480E-01 Z= 3.666886038072873E-01 VX=-1.831413040000361E-02 VY=-1.487883867213291E-03 VZ=-1.836791648737177E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 23.92 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 ******************************************************************************* $$SOE 2460800.500000000 = A.D. 2025-May-05 00:00:00.0000 TDB EC= 6.615482135208434E-01 QR= 8.514999234534378E-01 IN= 3.408173977534696E+00 OM= 2.713656150807753E+02 W = 1.343613660776440E+02 Tp= 2460636.917561115231 N = 2.469860190800106E-01 MA= 4.040257537151617E+01 TA= 1.212041094276003E+02 A = 2.515867717264588E+00 AD= 4.180235511075739E+00 PR= 1.457572381388028E+03 2463692.500000000 = A.D. 2033-Apr-05 00:00:00.0000 TDB EC= 6.425561671570054E-01 QR= 8.638649355992570E-01 IN= 3.481069246501511E+00 OM= 2.707594804384492E+02 W = 1.335873945871041E+02 Tp= 2463556.670809763018 N = 2.623294308559693E-01 MA= 3.563199416853624E+01 TA= 1.129406010669946E+02 A = 2.416785117617920E+00 AD= 3.969705299636583E+00 PR= 1.372320287606830E+03 $$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 = '@Sun' COMMAND = '2024 YR4' OUT_UNITS = 'AU-D' START_TIME = '2025-05-05' STEP_SIZE = '95 months' STOP_TIME = '2033-04-05' TABLE_TYPE = 'ELEMENTS'