******************************************************************************* JPL/HORIZONS ATLAS (C/2019 E3) 2024-May-02 19:10:19 Rec #:90004502 (+COV) Soln.date: 2024-Apr-29_15:03:10 # obs: 832 (2012-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459563.5 ! 2021-Dec-15.0000000 (TDB) RMSW= n.a. EC= 1.002303028267295 QR= 10.31391572060594 TP= 2460262.1807170776 OM= 347.2535171038948 W= 280.6432157581054 IN= 84.29740104197312 A= -4478.414732060814 MA= -.002297716095849546ADIST= 9.999999E99 PER= 9.999999E99 N= 3.289E-6 ANGMOM= .078173244 DAN= 17.42576 DDN= 25.34304 L= 319.3860669 B= -77.9408739 MOID= 10.06869984 TP= 2023-Nov-13.6807170776 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.3 M2= 7.8 k1= 6.25 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#88, data arc: 2012-03-19 to 2024-04-05 2: k1=6.25, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 2 19:10:20 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: ATLAS (C/2019 E3) {source: JPL#88} Center body name: Solar System Barycenter (0) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 1600-Jan-01 00:00:00.0000 TDB Stop time : A.D. 2500-Jan-01 00:00:00.0000 TDB Step-size : 900 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= 2459563.5 ! 2021-Dec-15.0000000 (TDB) RMSW= n.a. EC= 1.002303028267295 QR= 10.31391572060594 TP= 2460262.1807170776 OM= 347.2535171038948 W= 280.6432157581054 IN= 84.29740104197312 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-3.460133879643667E+00 Y= 3.878905253445729E+00 Z=-9.656524527677670E+00 VX= 7.146780714078612E-03 VY=-1.349449899476695E-03 VZ=-1.065145612811963E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.3 M2= 7.8 k1= 6.25 k2= 5. PHCOF= .030 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2305447.500000000 = A.D. 1600-Jan-01 00:00:00.0000 TDB EC= 9.997082144449142E-01 QR= 1.031304933715628E+01 IN= 8.428207586152917E+01 OM= 3.471825859263074E+02 W = 2.807092943741811E+02 Tp= 2460264.902677873615 N = 1.484261062705502E-07 MA= 3.599770210557376E+02 TA= 2.010742085434405E+02 A = 3.534461921577426E+04 AD= 7.067892538221138E+04 PR= 2.425449329943306E+09 2634166.500000000 = A.D. 2500-Jan-01 00:00:00.0000 TDB EC= 9.994173095795776E-01 QR= 1.030871237708690E+01 IN= 8.428478830371193E+01 OM= 3.471801735722835E+02 W = 2.806863666194803E+02 Tp= 2460265.229818204418 N = 4.191268069804428E-07 MA= 7.288668410113779E-02 TA= 1.598031632160502E+02 A = 1.769157689190649E+04 AD= 3.537284507143589E+04 PR= 8.589285963204885E+08 $$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 = '2019 E3' TABLE_TYPE = 'ELEMENTS' START_TIME = '1600-01-01' STOP_TIME = '2500-01-01' STEP_SIZE = '900 years' CENTER = '@0' OUT_UNITS = 'AU-D'