******************************************************************************* Ephemeris / WWW_USER Sat May 4 02:14:53 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2020 QG) {source: JPL#4} Center body name: Sun (10) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2020-May-31 00:00:00.0000 TDB Stop time : A.D. 2020-Dec-01 00:00:00.0000 TDB Step-size : 6 calendar months ******************************************************************************* Center geodetic : 0.0, 0.0, 0.0 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center radii : 695700.0, 695700.0, 695700.0 km {Equator_a, b, pole_c} Keplerian GM : 2.9591220828411951E-04 au^3/d^2 Small perturbers: Yes {source: SB441-N16} Output units : AU-D, deg, Julian Day Number (Tp) Calendar mode : Mixed Julian/Gregorian Output type : GEOMETRIC osculating elements Output format : 10 Reference frame : Ecliptic of J2000.0 ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2459078.5 ! 2020-Aug-17.00 (TDB) Residual RMS= .51307 EC= .4866106046281243 QR= .9905426939832248 TP= 2459060.1353148827 OM= 323.5035421234438 W= 338.9189927117442 IN= 4.773767191028807 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 8.255854701770600E-01 Y=-5.419435554959813E-01 Z=-2.334436901128986E-01 VX= 1.402258678797281E-02 VY= 1.323982601378049E-02 VZ= 7.609649365697668E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 29.9 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* JDTDB, Calendar Date (TDB), EC, QR, IN, OM, W, Tp, N, MA, TA, A, AD, PR, ************************************************************************************************************************************************************************************************************************************************************************************************************************************************** $$SOE 2459000.500000000, A.D. 2020-May-31 00:00:00.0000, 4.877227681063875E-01, 9.962822573026987E-01, 5.472696094065983E+00, 1.435002430108685E+02, 1.620117347060440E+02, 2.459062660969537E+06, 3.634026257682377E-01, 3.374105404498987E+02, 2.951622087042997E+02, 1.944810729963502E+00, 2.893339202624305E+00, 9.906367606424292E+02, 2459184.500000000, A.D. 2020-Dec-01 00:00:00.0000, 4.812590517408410E-01, 9.908479915139385E-01, 4.736684594007855E+00, 3.234631145317591E+02, 3.389756148613169E+02, 2.459060103732927E+06, 3.733527213287196E-01, 4.644368483468617E+01, 1.024757644948876E+02, 1.910101747007099E+00, 2.829355502500258E+00, 9.642356394746532E+02, $$EOE ************************************************************************************************************************************************************************************************************************************************************************************************************************************************** TIME Barycentric Dynamical Time ("TDB" or T_eph) output was requested. This continuous coordinate time is equivalent to the relativistic proper time of a clock at rest in a reference frame co-moving with the solar system barycenter but outside the system's gravity well. It is the independent variable in the solar system relativistic equations of motion. TDB runs at a uniform rate of one SI second per second and is independent of irregularities in Earth's rotation. 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. REFERENCE FRAME AND COORDINATES Ecliptic at the standard reference epoch Reference epoch: J2000.0 X-Y plane: adopted Earth orbital plane at the reference epoch Note: IAU76 obliquity of 84381.448 arcseconds wrt ICRF X-Y plane X-axis : ICRF Z-axis : perpendicular to the X-Y plane in the directional (+ or -) sense of Earth's north pole at the reference epoch. Symbol meaning [1 au= 149597870.700 km, 1 day= 86400.0 s]: JDTDB Julian Day Number, Barycentric Dynamical Time EC Eccentricity, e QR Periapsis distance, q (au) IN Inclination w.r.t X-Y plane, i (degrees) OM Longitude of Ascending Node, OMEGA, (degrees) W Argument of Perifocus, w (degrees) Tp Time of periapsis (Julian Day Number) N Mean motion, n (degrees/day) MA Mean anomaly, M (degrees) TA True anomaly, nu (degrees) A Semi-major axis, a (au) AD Apoapsis distance (au) PR Sidereal orbit period (day) ABERRATIONS AND CORRECTIONS Geometric osculating elements have NO corrections or aberrations applied. 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 = '2020 QG' MAKE_EPHEM = 'YES' TABLE_TYPE = 'ELEMENTS' START_TIME = '2020-May-31' STOP_TIME = '2020-Dec-01' STEP_SIZE = '6 months' CSV_FORMAT = 'YES' CENTER = '500@10' REF_PLANE = 'Ecliptic' REF_SYSTEM = 'J2000' OUT_UNITS = 'AU-D' VEC_TABLE = '1' OBJ_DATA = 'NO