******************************************************************************* JPL/HORIZONS (2021 UA1) 2024-May-02 02:20:03 Rec #:50611679 (+COV) Soln.date: 2021-Oct-26_07:32:49 # obs: 22 (1 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459513.5 ! 2021-Oct-26.00 (TDB) Residual RMS= .43799 EC= .405604751630822 QR= .6456521044150743 TP= 2459449.1708402317 OM= 126.6360051750638 W= 162.5411087953244 IN= .005944196205087182 A= 1.086233623479542 MA= 56.0050371919295 ADIST= 1.526815142544009 PER= 1.13212 N= .870601099 ANGMOM= .016387486 DAN= 1.48028 DDN= .65435 L= 289.1771141 B= .0017834 MOID= 7.349E-5 TP= 2021-Aug-22.6708402317 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 31.84 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#3, OCC=6 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 2 02:20:03 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2021 UA1) {source: JPL#3} Center body name: Sun (10) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2021-Jul-01 00:00:00.0000 TDB Stop time : A.D. 2022-Jan-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= 2459513.5 ! 2021-Oct-26.00 (TDB) Residual RMS= .43799 EC= .405604751630822 QR= .6456521044150743 TP= 2459449.1708402317 OM= 126.6360051750638 W= 162.5411087953244 IN= .005944196205087182 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 8.444874431522708E-01 Y= 4.925738962629773E-01 Z= 2.134440702524450E-01 VX=-2.769488837858590E-03 VY= 1.618905073893188E-02 VZ= 7.017873193241940E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 31.84 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2459396.500000000 = A.D. 2021-Jul-01 00:00:00.0000 TDB EC= 3.750360774048481E-01 QR= 6.139228987224656E-01 IN= 1.019762771714722E+01 OM= 2.116077587891398E+02 W = 6.627238715438867E+01 Tp= 2459443.102150866296 N = 1.012315173371849E+00 MA= 3.128239355660737E+02 TA= 2.711099197226870E+02 A = 9.823333420162259E-01 AD= 1.350743785309986E+00 PR= 3.556204722299100E+02 2459580.500000000 = A.D. 2022-Jan-01 00:00:00.0000 TDB EC= 4.046101984428686E-01 QR= 6.463527403643355E-01 IN= 5.934522322638403E-03 OM= 1.231851736220424E+02 W = 1.659997611031195E+02 Tp= 2459449.100743526127 N = 8.713683256735540E-01 MA= 1.144971501085084E+02 TA= 1.475133983818216E+02 A = 1.085595921653209E+00 AD= 1.524839102942083E+00 PR= 4.131433165438112E+02 $$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 = '2021 UA1' TABLE_TYPE = 'ELEMENTS' START_TIME = '2021-07-01' STOP_TIME = '2022-01-01' STEP_SIZE = '6 months' CENTER = '@Sun' OUT_UNITS = 'AU-D'