******************************************************************************* JPL/HORIZONS Utsunomiya-Jones (C/2000 W1) 2024-May-02 08:15:35 Rec #:90002653 (+COV) Soln.date: 2021-Apr-15_23:30:08 # obs: 440 (2000-2001) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2451889.5 ! 2000-Dec-11.0000000 (TDB) RMSW= n.a. EC= 1.000001769662552 QR= .3211811790223707 TP= 2451905.0592705449 OM= 10.76595996173393 W= 51.50886753780876 IN= 160.1654345803042 A= -181492.8945914923 MA= -1.9833705737131E-7 ADIST= 9.999999E99 PER= 9.999999E99 N= 1.3E-8 ANGMOM= .01378706 DAN= .39594 DDN= 1.70115 L= 320.9748492 B= 15.4011768 MOID= .100655 TP= 2000-Dec-26.5592705449 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.6 M2= 20.5 k1= 10. k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#23, data arc: 2000-11-26 to 2001-01-23 2: k1=10., k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 2 08:15:35 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Utsunomiya-Jones (C/2000 W1) {source: JPL#23} 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= 2451889.5 ! 2000-Dec-11.0000000 (TDB) RMSW= n.a. EC= 1.000001769662552 QR= .3211811790223707 TP= 2451905.0592705449 OM= 10.76595996173393 W= 51.50886753780876 IN= 160.1654345803042 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 4.267344456061283E-01 Y= 3.408686329823480E-01 Z= 5.056639760778035E-02 VX=-7.407111250170191E-04 VY=-3.275928467478365E-02 VZ=-2.296118358357083E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.6 M2= 20.5 k1= 10. k2= 5. PHCOF= .030 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2305447.500000000 = A.D. 1600-Jan-01 00:00:00.0000 TDB EC= 9.999907621499692E-01 QR= 3.182636753459460E-01 IN= 1.601354918663310E+02 OM= 1.042651749992669E+01 W = 5.125019509915958E+01 Tp= 2451904.840467066970 N = 1.542307625849411E-07 MA= 3.599774117726936E+02 TA= 1.836927275581727E+02 A = 3.445213705635511E+04 AD= 6.890395584903489E+04 PR= 2.334164689108202E+09 2634166.500000000 = A.D. 2500-Jan-01 00:00:00.0000 TDB EC= 9.996118381885349E-01 QR= 3.242666968290267E-01 IN= 1.602784471913891E+02 OM= 1.101804156561156E+01 W = 5.177422241073067E+01 Tp= 2451904.217081411276 N = 4.084707312176417E-05 MA= 7.444880797715280E+00 TA= 1.768306700887532E+02 A = 8.353905182109876E+02 AD= 1.670456769725146E+03 PR= 8.813360970242554E+06 $$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 = '2000 W1' TABLE_TYPE = 'ELEMENTS' START_TIME = '1600-01-01' STOP_TIME = '2500-01-01' STEP_SIZE = '900 years' CENTER = '@0' OUT_UNITS = 'AU-D'