API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 523794 (2015 RR245) 2024-May-03 08:39:43 Rec #: 523794 (+COV) Soln.date: 2023-Dec-06_13:36:16 # obs: 268 (2004-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457937.5 ! 2017-Jul-03.00 (TDB) Residual RMS= .10919 EC= .5845283270471726 QR= 33.74968511816236 TP= 2485500.2521881652 OM= 211.6619027437777 W= 261.4012417497526 IN= 7.580744055854263 A= 81.23221705657487 MA= 322.8948497455838 ADIST= 128.7147489949874 PER= 732.151 N= .001346206 ANGMOM= .125795848 DAN= 58.59856 DDN= 49.1793 L= 112.9884762 B= -7.4950414 MOID= 32.77529907 TP= 2092-Dec-18.7521881652 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 3.99 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#23, OCC=2 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Fri May 3 08:39:43 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 523794 (2015 RR245) {source: JPL#23} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2092-Aug-01 00:00:00.0000 UT Stop time : A.D. 2092-Aug-31 00:00:00.0000 UT Step-size : 4320 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.240502.p240726 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-02. PREDICTS-> 2024-JUL-25 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= 2457937.5 ! 2017-Jul-03.00 (TDB) Residual RMS= .10919 EC= .5845283270471726 QR= 33.74968511816236 TP= 2485500.2521881652 OM= 211.6619027437777 W= 261.4012417497526 IN= 7.580744055854263 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 6.296897616108251E+01 Y= 6.177522422225785E+00 Z= 6.455952511548962E+00 VX=-1.551711399246729E-03 VY= 1.753874837839907E-03 VZ= 4.228089719297530E-04 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 3.99 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2092-Aug-01 00:00 33.90298716752 -0.0056950 2092-Aug-04 00:00 33.90297802019 -0.0048637 2092-Aug-07 00:00 33.90297031188 -0.0040339 2092-Aug-10 00:00 33.90296404011 -0.0032056 2092-Aug-13 00:00 33.90295920243 -0.0023786 2092-Aug-16 00:00 33.90295579676 -0.0015526 2092-Aug-19 00:00 33.90295382157 -0.0007273 2092-Aug-22 00:00 33.90295327589 0.0000974 2092-Aug-25 00:00 33.90295415903 0.0009219 2092-Aug-28 00:00 33.90295647045 0.0017460 2092-Aug-31 00:00 33.90296020957 0.0025697 $$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 *******************************************************************************