******************************************************************************* JPL/HORIZONS PANSTARRS (C/2012 S4) 2024-Apr-27 23:00:39 Rec #:90004153 (+COV) Soln.date: 2021-Apr-15_23:32:22 # obs: 924 (2012-2014) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456406.5 ! 2013-Apr-24.0000000 (TDB) RMSW= n.a. EC= .9999819926719808 QR= 4.348728415231951 TP= 2456471.5234030029 OM= 173.1035240071253 W= 163.6154852424364 IN= 126.5413341641622 A= 241497.706411874 MA= 359.999999459987 ADIST= 482991.0640953327 PER= 118680049.27368 N= 8.E-9 ANGMOM= .050731257 DAN= 214.07863 DDN= 4.43886 L= 3.0331971 B= 13.0988987 MOID= 3.37147999 TP= 2013-Jun-28.0234030029 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 9.4 M2= 11.9 k1= 8.75 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#44, data arc: 2012-09-28 to 2014-01-01 2: k1=8.75, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Apr 27 23:00:39 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: PANSTARRS (C/2012 S4) {source: JPL#44} 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= 2456406.5 ! 2013-Apr-24.0000000 (TDB) RMSW= n.a. EC= .9999819926719808 QR= 4.348728415231951 TP= 2456471.5234030029 OM= 173.1035240071253 W= 163.6154852424364 IN= 126.5413341641622 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 4.037638748868682E+00 Y= 2.040382871527358E-04 Z= 1.701835518766050E+00 VX= 3.427883160379240E-03 VY=-2.877095785240466E-03 VZ=-1.072566367980778E-02 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 9.4 M2= 11.9 k1= 8.75 k2= 5. PHCOF= .030 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.989699385220322E-01 QR= 4.348468966694102E+00 IN= 1.265257957454013E+02 OM= 1.730395215836225E+02 W = 1.635538002069111E+02 Tp= 2456471.400906479917 N = 3.595716239187111E-06 MA= 3.597196243825616E+02 TA= 1.969493876110643E+02 A = 4.221562556898098E+03 AD= 8.438776644829501E+03 PR= 1.001191351187895E+08 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 9.984687859679852E-01 QR= 4.347878380839093E+00 IN= 1.265327475330171E+02 OM= 1.730871268462204E+02 W = 1.635067583656794E+02 Tp= 2456471.019610399846 N = 6.518280186702421E-06 MA= 4.440414141925395E-01 TA= 1.623045129300103E+02 A = 2.839497477121320E+03 AD= 5.674647075861802E+03 PR= 5.522929203540772E+07 $$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 = '2012 S4' TABLE_TYPE = 'ELEMENTS' START_TIME = '1800-01-01' STOP_TIME = '2200-01-01' STEP_SIZE = '400 years' CENTER = '@0' OUT_UNITS = 'AU-D'