******************************************************************************* JPL/HORIZONS 4015 Wilson-Harrington (1979 VA) 2024-May-01 22:08:14 Rec #: 4015 (+COV) Soln.date: 2024-Mar-06_05:25:21 # obs: 1510 (1949-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457559.5 ! 2016-Jun-20.00 (TDB) Residual RMS= .23812 EC= .6288738802325311 QR= .978321673063368 TP= 2458261.8575818199 OM= 268.2158538209755 W= 93.70581251134787 IN= 2.771137523019834 A= 2.636089515004605 MA= 198.2582572713399 ADIST= 4.293857356945842 PER= 4.28005 N= .230284042 ANGMOM= .021715309 DAN= 1.66108 DDN= 1.53132 L= 1.9259928 B= 2.7653388 MOID= .0446022 TP= 2018-May-23.3575818199 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= 2. ROTPER= 3.5736 H= 16.19 G= .150 B-V= .666 ALBEDO= .050 STYP= CF ASTEROID comments: 1: soln ref.= JPL#329, PHA OCC=0 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed May 1 22:08:14 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 4015 Wilson-Harrington (1979 VA) {source: JPL#329} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2026-Nov-25 00:00:00.0000 UT Stop time : A.D. 2026-Nov-26 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 2. km 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.240501.p240725 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-01. PREDICTS-> 2024-JUL-24 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= 2457559.5 ! 2016-Jun-20.00 (TDB) Residual RMS= .23812 EC= .6288738802325311 QR= .978321673063368 TP= 2458261.8575818199 OM= 268.2158538209755 W= 93.70581251134787 IN= 2.771137523019834 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-4.222624851085457E+00 Y=-4.159835140378890E-01 Z=-4.021245832904022E-01 VX= 1.441946886073869E-03 VY=-4.573762697835847E-03 VZ=-1.898800255569671E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= 2. ROTPER= 3.5736 H= 16.19 G= .150 B-V= .666 ALBEDO= .050 STYP= CF ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2026-Nov-25 00:00 0.969878425655 -0.2193334 2026-Nov-25 03:00 0.969864140971 -0.1763884 2026-Nov-25 06:00 0.969852956824 -0.1334408 2026-Nov-25 09:00 0.969844873376 -0.0904912 2026-Nov-25 12:00 0.969839890744 -0.0475403 2026-Nov-25 15:00 0.969838009002 -0.0045887 2026-Nov-25 18:00 0.969839228175 0.0383629 2026-Nov-25 21:00 0.969843548245 0.0813140 2026-Nov-26 00:00 0.969850969146 0.1242638 $$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 ******************************************************************************* !$$SOF COMMAND = '107P' START_TIME = '2026-Nov-25' STOP_TIME = '2026-Nov-26' STEP_SIZE = '3 hours' QUANTITIES = '19'