******************************************************************************* JPL/HORIZONS Tsuchinshan-ATLAS (C/2023 A3) 2025-Dec-12 18:05:57 Rec #:90004786 (+COV) Soln.date: 2025-Dec-02_15:12:36 # obs: 7249 (2022-2025) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460447.5 ! 2024-May-17.0000000 (TDB) RMSW= n.a. EC= 1.000095527746298 QR= .3914303070270577 TP= 2460581.2408201438 OM= 21.55947551239758 W= 308.4917370971245 IN= 139.1121322891075 A= -4097.556178140983 MA= -.000502551624536088ADIST= 9.999999E99 PER= 9.999999E99 N= 3.758E-6 ANGMOM= .015220679 DAN= .48254 DDN= 2.07369 L= 65.1115592 B= -30.8197549 MOID= .27504101 TP= 2024-Sep-27.7408201438 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 8.9 M2= n.a. k1= 5.5 k2= n.a. PHCOF= n.a. Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 1.420760512352E-8 A2= 1.353787332773E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#108, data arc: 2022-04-09 to 2025-11-20 2: k1=5.5; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 18:05:57 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: Tsuchinshan-ATLAS (C/2023 A3) {source: JPL#108} Center body name: Solar System Barycenter (0) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 1800-Jan-01 00:00:00.0000 TDB Stop time : A.D. 2200-Jan-01 00:00:00.0000 TDB Step-size : 400 calendar years ******************************************************************************* 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 : (undefined) Keplerian GM : 2.9630927493968080E-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= 2460447.5 ! 2024-May-17.0000000 (TDB) RMSW= n.a. EC= 1.000095527746298 QR= .3914303070270577 TP= 2460581.2408201438 OM= 21.55947551239758 W= 308.4917370971245 IN= 139.1121322891075 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.290384238687562E+00 Y=-1.067227695058112E+00 Z=-2.946836344044337E-01 VX= 1.046386429568320E-02 VY= 1.109437185119683E-02 VZ=-3.671217224844757E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 8.9 M2= n.a. k1= 5.5 k2= n.a. PHCOF= n.a. Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 1.420760512352E-8 A2= 1.353787332773E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.999919213537765E-01 QR= 3.910815283131125E-01 IN= 1.390358597345798E+02 OM= 2.158041345020995E+01 W = 3.085835069137819E+02 Tp= 2460581.917779302225 N = 9.259812329904442E-08 MA= 3.599923990443634E+02 TA= 1.849721517310383E+02 A = 4.840929006340838E+04 AD= 9.681818904528844E+04 PR= 3.887767777294845E+09 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 1.000038608921400E+00 QR= 3.880296662390330E-01 IN= 1.391247071708682E+02 OM= 2.160187510286397E+01 W = 3.084069270651732E+02 Tp= 2460581.258402163628 N = 9.788797934018912E-07 MA= 6.266028983048223E-02 TA= 1.745947143914730E+02 A =-1.005025916722894E+04 AD= 9.999999999999998E+99 PR= 9.999999999999998E+99 $$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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF CENTER = '@0' COMMAND = '2023 A3' OUT_UNITS = 'AU-D' START_TIME = '1800-01-01' STEP_SIZE = '400 years' STOP_TIME = '2200-01-01' TABLE_TYPE = 'ELEMENTS'