******************************************************************************* JPL/HORIZONS Lovejoy (C/2013 R1) 2024-May-05 12:54:11 Rec #:90004204 (+COV) Soln.date: 2021-Apr-15_23:32:40 # obs: 3894 (2013-2014) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456655.5 ! 2013-Dec-29.0000000 (TDB) RMSW= n.a. EC= .9984251867685467 QR= .8118255757863039 TP= 2456649.2331217458 OM= 70.71117523072714 W= 67.16644868331953 IN= 64.04095258556559 A= 515.5059403692862 MA= .0005277215391402994ADIST= 1030.200055162786 PER= 11704.657596746 N= 8.4208E-5 ANGMOM= .021910725 DAN= 1.16932 DDN= 2.64853 L= 116.8237599 B= 55.9602659 MOID= .146111 TP= 2013-Dec-22.7331217458 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 11.5 M2= n.a. k1= 7.25 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#70, data arc: 2013-09-07 to 2014-09-14 2: k1=7.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sun May 5 12:54:11 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Lovejoy (C/2013 R1) {source: JPL#70} 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= 2456655.5 ! 2013-Dec-29.0000000 (TDB) RMSW= n.a. EC= .9984251867685467 QR= .8118255757863039 TP= 2456649.2331217458 OM= 70.71117523072714 W= 67.16644868331953 IN= 64.04095258556559 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.811808097231028E-01 Y=-4.587045082737319E-02 Z= 7.695200858101827E-01 VX=-1.170947049933139E-02 VY=-2.399913135706837E-02 VZ=-2.756008589772552E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 11.5 M2= n.a. k1= 7.25 k2= n.a. PHCOF= n.a. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.977764939239055E-01 QR= 8.077164915648848E-01 IN= 6.407425688171625E+01 OM= 7.066446598075136E+01 W = 6.731527905339954E+01 Tp= 2456648.284284153022 N = 1.424506092005799E-04 MA= 3.488672307186101E+02 TA= 1.864500542615774E+02 A = 3.632625519888687E+02 AD= 7.257173874861726E+02 PR= 2.527191719433758E+06 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 9.980629719150602E-01 QR= 8.091415969076599E-01 IN= 6.404425122053730E+01 OM= 7.074316455288221E+01 W = 6.709085700634610E+01 Tp= 2456649.878555617295 N = 1.155213722962236E-04 MA= 7.848940388030167E+00 TA= 1.730467998089394E+02 A = 4.177232138236903E+02 AD= 8.346372860504729E+02 PR= 3.116306470779074E+06 $$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 = '2013 R1' TABLE_TYPE = 'ELEMENTS' START_TIME = '1800-01-01' STOP_TIME = '2200-01-01' STEP_SIZE = '400 years' CENTER = '@0' OUT_UNITS = 'AU-D'