API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 55636 (2002 TX300) 2025-Dec-12 17:39:44 Rec #: 55636 (+COV) Soln.date: 2025-Nov-27_13:52:32 # obs: 1696 (1954-2025) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458374.5 ! 2018-Sep-13.00 (TDB) Residual RMS= .097732 EC= .1246806132975114 QR= 37.72574651941508 TP= 2436174.589702155 OM= 324.5268406111056 W= 338.588125647703 IN= 25.8490412853701 A= 43.09940701934624 MA= 77.33006069311897 ADIST= 48.47306751927739 PER= 282.95355 N= .00348335 ANGMOM= .112050801 DAN= 38.01663 DDN= 48.00116 L= 305.0888976 B= -9.1587797 MOID= 36.72280121 TP= 1957-Dec-02.0897021550 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 8.12 H= 3.5 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#54, OCC=0 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Fri Dec 12 17:39:44 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: 55636 (2002 TX300) {source: JPL#54} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 1958-Feb-01 00:00:00.0000 UT Stop time : A.D. 1958-Feb-20 00:00:00.0000 UT Step-size : 1440 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 0.0, 0.0, -695700.0 {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 : IAU_SUN {East-longitude positive} Center radii : 695700.0, 695700.0, 695700.0 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : None 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 n.a. , 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= 2458374.5 ! 2018-Sep-13.00 (TDB) Residual RMS= .097732 EC= .1246806132975114 QR= 37.72574651941508 TP= 2436174.589702155 OM= 324.5268406111056 W= 338.588125647703 IN= 25.8490412853701 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 3.266826676685630E+01 Y= 1.231136755800888E+01 Z= 2.437553425697227E+01 VX=-1.298380077512846E-03 VY= 1.858306274596464E-03 VZ= 1.376450937610269E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 8.12 H= 3.5 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* Date__(UT)__HR:MN delta deldot *************************************************** $$SOE 1958-Feb-01 00:00 37.9222928730125 -0.0001699 1958-Feb-02 00:00 37.9222927895000 -0.0001193 1958-Feb-03 00:00 37.9222927352188 -0.0000687 1958-Feb-04 00:00 37.9222927101398 -0.0000182 1958-Feb-05 00:00 37.9222927142327 0.0000323 1958-Feb-06 00:00 37.9222927474661 0.0000828 1958-Feb-07 00:00 37.9222928098072 0.0001331 1958-Feb-08 00:00 37.9222929012222 0.0001834 1958-Feb-09 00:00 37.9222930216759 0.0002337 1958-Feb-10 00:00 37.9222931711322 0.0002839 1958-Feb-11 00:00 37.9222933495533 0.0003340 1958-Feb-12 00:00 37.9222935569006 0.0003840 1958-Feb-13 00:00 37.9222937931341 0.0004340 1958-Feb-14 00:00 37.9222940582128 0.0004839 1958-Feb-15 00:00 37.9222943520943 0.0005338 1958-Feb-16 00:00 37.9222946747354 0.0005835 1958-Feb-17 00:00 37.9222950260915 0.0006332 1958-Feb-18 00:00 37.9222954061170 0.0006828 1958-Feb-19 00:00 37.9222958147656 0.0007323 1958-Feb-20 00:00 37.9222962519897 0.0007817 $$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. 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. 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 *******************************************************************************