******************************************************************************* JPL/HORIZONS Hale-Bopp (C/1995 O1) 2024-Apr-16 06:27:39 Rec #:90002203 (+COV) Soln.date: 2022-Aug-01_01:56:46 # obs: 66 (1993-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459837.5 ! 2022-Sep-15.0000000 (TDB) RMSW= n.a. EC= .9949810027633206 QR= .890537663547794 TP= 2450537.1349071441 OM= 282.7334213961641 W= 130.4146670659176 IN= 89.28759424740302 A= 177.4333839117583 MA= 3.878386339423163 ADIST= 353.9762301599687 PER= 2363.5304681429 N= .000417014 ANGMOM= .02292857 DAN= 5.00538 DDN= 1.07996 L= 101.8968625 B= 49.580132 MOID= .0878151 TP= 1997-Mar-29.6349071441 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 30. M1= 4.8 M2= n.a. k1= 4. k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#226, data arc: 1993-04-27 to 2022-07-09 2: k1=4.; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue Apr 16 06:27:39 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Hale-Bopp (C/1995 O1) {source: JPL#226} Center body name: Solar System Barycenter (0) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2022-Sep-15 00:00:00.0000 TDB Stop time : A.D. 2022-Sep-16 00:00:00.0000 TDB Step-size : 100 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= 2459837.5 ! 2022-Sep-15.0000000 (TDB) RMSW= n.a. EC= .9949810027633206 QR= .890537663547794 TP= 2450537.1349071441 OM= 282.7334213961641 W= 130.4146670659176 IN= 89.28759424740302 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 3.907631452214869E+00 Y=-1.373895334060347E+00 Z=-4.624358508575312E+01 VX= 3.778244409519935E-04 VY=-5.803173067116371E-04 VZ=-3.255716412104052E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 30. M1= 4.8 M2= n.a. k1= 4. k2= n.a. PHCOF= n.a. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2459837.500000000 = A.D. 2022-Sep-15 00:00:00.0000 TDB EC= 9.948748837608891E-01 QR= 9.189008486229987E-01 IN= 8.936471598455290E+01 OM= 2.825474748887899E+02 W = 1.306620536459271E+02 Tp= 2450539.787401567679 N = 4.108164789941038E-04 MA= 3.819653552386975E+00 TA= 1.648983376100081E+02 A = 1.792936600365746E+02 AD= 3.576684192245261E+02 PR= 8.763036986283280E+05 $$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 = 'Hale-Bopp' TABLE_TYPE = 'ELEMENTS' START_TIME = '2022-Sep-15' STOP_TIME = '2022-Sep-16' STEP_SIZE = '100 years' CENTER = '@0' OUT_UNITS = 'AU-D'