******************************************************************************* JPL/HORIZONS (2024 YR4) 2025-Dec-12 17:49:57 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 17:49:57 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2024 YR4) {source: JPL#78} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2032-Nov-20 00:00:00.0000 UT Stop time : A.D. 2032-Nov-22 00:00:00.0000 UT Step-size : 60 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.251212.p260310 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-DEC-12. PREDICTS-> 2026-MAR-09 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= 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. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2032-Nov-20 00:00 0.869347421200 -0.5040203 2032-Nov-20 01:00 0.869335514421 -0.4855058 2032-Nov-20 02:00 0.869324053219 -0.4669901 2032-Nov-20 03:00 0.869313037621 -0.4484733 2032-Nov-20 04:00 0.869302467653 -0.4299555 2032-Nov-20 05:00 0.869292343339 -0.4114367 2032-Nov-20 06:00 0.869282664703 -0.3929170 2032-Nov-20 07:00 0.869273431768 -0.3743963 2032-Nov-20 08:00 0.869264644555 -0.3558748 2032-Nov-20 09:00 0.869256303084 -0.3373524 2032-Nov-20 10:00 0.869248407375 -0.3188292 2032-Nov-20 11:00 0.869240957446 -0.3003053 2032-Nov-20 12:00 0.869233953316 -0.2817807 2032-Nov-20 13:00 0.869227394999 -0.2632554 2032-Nov-20 14:00 0.869221282513 -0.2447295 2032-Nov-20 15:00 0.869215615870 -0.2262031 2032-Nov-20 16:00 0.869210395084 -0.2076761 2032-Nov-20 17:00 0.869205620168 -0.1891486 2032-Nov-20 18:00 0.869201291132 -0.1706207 2032-Nov-20 19:00 0.869197407987 -0.1520924 2032-Nov-20 20:00 0.869193970742 -0.1335637 2032-Nov-20 21:00 0.869190979404 -0.1150347 2032-Nov-20 22:00 0.869188433982 -0.0965054 2032-Nov-20 23:00 0.869186334481 -0.0779759 2032-Nov-21 00:00 0.869184680906 -0.0594462 2032-Nov-21 01:00 0.869183473261 -0.0409164 2032-Nov-21 02:00 0.869182711549 -0.0223865 2032-Nov-21 03:00 0.869182395772 -0.0038565 2032-Nov-21 04:00 0.869182525930 0.0146735 2032-Nov-21 05:00 0.869183102024 0.0332034 2032-Nov-21 06:00 0.869184124053 0.0517333 2032-Nov-21 07:00 0.869185592013 0.0702631 2032-Nov-21 08:00 0.869187505902 0.0887927 2032-Nov-21 09:00 0.869189865716 0.1073222 2032-Nov-21 10:00 0.869192671448 0.1258513 2032-Nov-21 11:00 0.869195923094 0.1443802 2032-Nov-21 12:00 0.869199620644 0.1629088 2032-Nov-21 13:00 0.869203764092 0.1814370 2032-Nov-21 14:00 0.869208353426 0.1999647 2032-Nov-21 15:00 0.869213388638 0.2184920 2032-Nov-21 16:00 0.869218869715 0.2370188 2032-Nov-21 17:00 0.869224796644 0.2555451 2032-Nov-21 18:00 0.869231169412 0.2740708 2032-Nov-21 19:00 0.869237988005 0.2925958 2032-Nov-21 20:00 0.869245252406 0.3111202 2032-Nov-21 21:00 0.869252962600 0.3296438 2032-Nov-21 22:00 0.869261118567 0.3481667 2032-Nov-21 23:00 0.869269720290 0.3666888 2032-Nov-22 00:00 0.869278767748 0.3852100 $$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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF COMMAND = '2024 YR4' QUANTITIES = '19' START_TIME = '2032-Nov-20' STEP_SIZE = '1 hour' STOP_TIME = '2032-Nov-22'