******************************************************************************* JPL/HORIZONS Elenin (C/2010 X1) 2024-Apr-30 06:33:33 Rec #:90004077 (+COV) Soln.date: 2021-Apr-15_23:31:47 # obs: 2235 (2010-2011) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2455651.5 ! 2011-Mar-31.0000000 (TDB) RMSW= n.a. EC= 1.000067251452369 QR= .4824207940167428 TP= 2455815.2197473203 OM= 323.2351474030079 W= 343.7981179505746 IN= 1.83956811421481 A= -7173.388484905965 MA= -.000265594215836295ADIST= 9.999999E99 PER= 9.999999E99 N= 1.622E-6 ANGMOM= .016897278 DAN= .4922 DDN= 24.33423 L= 307.0411776 B= -.5131999 MOID= .0306307 TP= 2011-Sep-10.7197473203 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.6 M2= n.a. k1= 6.25 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= -4.779002666473E-8 A2= 6.325626373291E-8 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#39, data arc: 2010-12-10 to 2011-09-07 2: k1=6.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue Apr 30 06:33:33 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Elenin (C/2010 X1) {source: JPL#39} 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= 2455651.5 ! 2011-Mar-31.0000000 (TDB) RMSW= n.a. EC= 1.000067251452369 QR= .4824207940167428 TP= 2455815.2197473203 OM= 323.2351474030079 W= 343.7981179505746 IN= 1.83956811421481 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.877426238637401E+00 Y= 2.377806159844562E-01 Z= 4.947149742079748E-02 VX= 1.254169920258827E-02 VY=-6.361339766230103E-03 VZ=-2.688867826291470E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.6 M2= n.a. k1= 6.25 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= -4.779002666473E-8 A2= 6.325626373291E-8 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 ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.999900409804547E-01 QR= 4.815760993247050E-01 IN= 1.876286862289501E+00 OM= 3.234166898930618E+02 W = 3.436544710070316E+02 Tp= 2455816.071122340858 N = 9.275188516179889E-08 MA= 3.599928284640185E+02 TA= 1.856307978505143E+02 A = 4.835577409278979E+04 AD= 9.671106660948026E+04 PR= 3.881322728610920E+09 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 1.000439271509481E+00 QR= 4.749664814328693E-01 IN= 1.867940980878444E+00 OM= 3.222159397678971E+02 W = 3.444617804101330E+02 Tp= 2455815.197217110079 N = 2.773961099204091E-05 MA= 1.907883363890171E+00 TA= 1.739845788021951E+02 A =-1.081259474338663E+03 AD= 9.999999999999998E+99 PR= 9.999999999999998E+99 $$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/hrzn_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF COMMAND = '2010 X1' TABLE_TYPE = 'ELEMENTS' START_TIME = '1800-01-01' STOP_TIME = '2200-01-01' STEP_SIZE = '400 years' CENTER = '@0' OUT_UNITS = 'AU-D'