******************************************************************************* JPL/HORIZONS 2060 Chiron (1977 UB) 2024-May-07 08:07:51 Rec #: 2060 (+COV) Soln.date: 2024-Apr-15_17:30:22 # obs: 4816 (1895-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457449.5 ! 2016-Mar-02.00 (TDB) Residual RMS= .20056 EC= .3827229197950457 QR= 8.418212438761079 TP= 2450136.970496438 OM= 209.2271095910314 W= 339.4831068241818 IN= 6.945373528616352 A= 13.63765593883055 MA= 143.1074064139388 ADIST= 18.85709943890003 PER= 50.36372 N= .019570165 ANGMOM= .058689305 DAN= 8.56865 DDN= 18.14354 L= 188.8483518 B= -2.4290095 MOID= 7.42028999 TP= 1996-Feb-23.4704964380 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= 83. ROTPER= 5.918 H= 5.6 G= .150 B-V= .704 ALBEDO= .150 STYP= Cb ASTEROID comments: 1: soln ref.= JPL#155, OCC=0 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue May 7 08:07:52 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 2060 Chiron (1977 UB) {source: JPL#155} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2021-May-27 00:00:00.0000 UT Stop time : A.D. 2021-May-28 00:00:00.0000 UT Step-size : 60 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 83. 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.240506.p240730 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-06. PREDICTS-> 2024-JUL-29 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= 2457449.5 ! 2016-Mar-02.00 (TDB) Residual RMS= .20056 EC= .3827229197950457 QR= 8.418212438761079 TP= 2450136.970496438 OM= 209.2271095910314 W= 339.4831068241818 IN= 6.945373528616352 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.799918047061442E+01 Y=-3.247931453539689E+00 Z= 9.942643249259442E-02 VX= 1.130607799078249E-03 VY= 2.902504689921008E-03 VZ= 9.780469295300473E-04 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= 83. ROTPER= 5.918 H= 5.6 G= .150 B-V= .704 ALBEDO= .150 STYP= Cb ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2021-May-27 00:00 18.86926463637 0.0001398 2021-May-27 01:00 18.86926463945 0.0001166 2021-May-27 02:00 18.86926464198 0.0000934 2021-May-27 03:00 18.86926464395 0.0000702 2021-May-27 04:00 18.86926464536 0.0000470 2021-May-27 05:00 18.86926464621 0.0000238 2021-May-27 06:00 18.86926464650 0.0000005 2021-May-27 07:00 18.86926464623 -0.0000227 2021-May-27 08:00 18.86926464541 -0.0000459 2021-May-27 09:00 18.86926464402 -0.0000691 2021-May-27 10:00 18.86926464208 -0.0000923 2021-May-27 11:00 18.86926463958 -0.0001155 2021-May-27 12:00 18.86926463652 -0.0001387 2021-May-27 13:00 18.86926463291 -0.0001619 2021-May-27 14:00 18.86926462873 -0.0001851 2021-May-27 15:00 18.86926462400 -0.0002083 2021-May-27 16:00 18.86926461871 -0.0002315 2021-May-27 17:00 18.86926461285 -0.0002547 2021-May-27 18:00 18.86926460644 -0.0002779 2021-May-27 19:00 18.86926459948 -0.0003011 2021-May-27 20:00 18.86926459195 -0.0003243 2021-May-27 21:00 18.86926458387 -0.0003475 2021-May-27 22:00 18.86926457522 -0.0003708 2021-May-27 23:00 18.86926456602 -0.0003940 2021-May-28 00:00 18.86926455626 -0.0004172 $$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 = '2060' START_TIME = '2021-05-27' STOP_TIME = '2021-05-28' STEP_SIZE = '1 hours' QUANTITIES = '19'