******************************************************************************* JPL/HORIZONS PANSTARRS (C/2021 O3) 2025-Dec-12 18:01:31 Rec #:90004695 (+COV) Soln.date: 2024-Aug-08_14:32:18 # obs: 760 (2021-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459517.5 ! 2021-Oct-30.0000000 (TDB) RMSW= n.a. EC= 1.00015129657889 QR= .2873217024777257 TP= 2459690.5416030544 OM= 189.0273351765806 W= 299.9832861762227 IN= 56.77278941142959 A= -1899.062785066713 MA= -.002060846375684604ADIST= 9.999999E99 PER= 9.999999E99 N= 1.191E-5 ANGMOM= .013040585 DAN= .38317 DDN= 1.14897 L= 145.5041109 B= -46.4319117 MOID= .0630297 TP= 2022-Apr-21.0416030544 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 13.6 M2= n.a. k1= 4.5 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= 0. A2= 2.731814086437E-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#17, data arc: 2021-07-26 to 2022-07-12 2: k1=4.5;After disintegration ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 18:01:32 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: PANSTARRS (C/2021 O3) {source: JPL#17} Center body name: Solar System Barycenter (0) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 1950-Jan-01 00:00:00.0000 TDB Stop time : A.D. 2100-Jan-01 00:00:00.0000 TDB Step-size : 150 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= 2459517.5 ! 2021-Oct-30.0000000 (TDB) RMSW= n.a. EC= 1.00015129657889 QR= .2873217024777257 TP= 2459690.5416030544 OM= 189.0273351765806 W= 299.9832861762227 IN= 56.77278941142959 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.941078431674519E+00 Y=-6.885144693133191E-01 Z= 9.115426879644660E-01 VX=-1.078229984068218E-02 VY= 6.210392793758892E-03 VZ=-5.736164278228467E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 13.6 M2= n.a. k1= 4.5 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= 0. A2= 2.731814086437E-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 ******************************************************************************* $$SOE 2433282.500000000 = A.D. 1950-Jan-01 00:00:00.0000 TDB EC= 1.000002870346933E+00 QR= 2.841902199510833E-01 IN= 5.658948329409235E+01 OM= 1.892563503603484E+02 W = 2.999889532772413E+02 Tp= 2459688.978478294797 N = 3.165797643193165E-08 MA=-8.359756733161673E-04 TA= 1.861966269704585E+02 A =-9.900901408546635E+04 AD= 9.999999999999998E+99 PR= 9.999999999999998E+99 2488069.500000000 = A.D. 2100-Jan-01 00:00:00.0000 TDB EC= 1.000116465878347E+00 QR= 2.897575202510126E-01 IN= 5.682381914392435E+01 OM= 1.887283671457072E+02 W = 3.001725285816659E+02 Tp= 2459690.867750034668 N = 7.947695879562526E-06 MA= 2.255447386006688E-01 TA= 1.738431425740455E+02 A =-2.487917700570199E+03 AD= 9.999999999999998E+99 PR= 9.999999999999998E+99 $$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 = '2021 O3' OUT_UNITS = 'AU-D' START_TIME = '1950-01-01' STEP_SIZE = '150 years' STOP_TIME = '2100-01-01' TABLE_TYPE = 'ELEMENTS'