******************************************************************************* JPL/HORIZONS Donati (C/1858 L1) 2024-Apr-30 05:13:44 Rec #:90001684 Soln.date: - # obs: 1000 (1858-1859) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2399960.5 ! 1858-Oct-08.0000000 (TDB) RMSW= n.a. EC= .996295 QR= .578469 TP= 2399952.9644999998 OM= 167.3044 W= 129.1144 IN= 116.9512 A= 156.1319838056698 MA= .003806960154313892 ADIST= 311.6854986113395 PER= 1950.9494603315 N= .000505203 ANGMOM= .018485613 DAN= 3.10875 DDN= .7091 L= 16.4403457 B= 43.7585564 TP= 1858-Sep-30.4644999998 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= n.a. k1= n.a. k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= SAO_2008, data arc: 1858-06-07 to 1859-03-04 2: epoch may be 2399961.0 (hour ambiguous: 12h/0h); time units are UT, but set to E ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue Apr 30 05:13:45 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Donati (C/1858 L1) {source: DASTCOM} 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. 2200-Jan-01 00:00:00.0000 TDB Step-size : 600 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= 2399960.5 ! 1858-Oct-08.0000000 (TDB) RMSW= n.a. EC= .996295 QR= .578469 TP= 2399952.9644999998 OM= 167.3044 W= 129.1144 IN= 116.9512 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 5.486276539922146E-01 Y=-9.332068433687440E-02 Z= 2.316495931861619E-01 VX= 1.691324144202575E-02 VY=-5.232983287691349E-03 VZ=-2.581593126583802E-02 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= n.a. k1= n.a. k2= n.a. PHCOF= n.a. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2305447.500000000 = A.D. 1600-Jan-01 00:00:00.0000 TDB EC= 9.963332711254723E-01 QR= 5.756724321386394E-01 IN= 1.167922548360946E+02 OM= 1.674119842674477E+02 W = 1.292376336511134E+02 Tp= 2399952.895913816988 N = 5.013607189406900E-04 MA= 3.126187067608740E+02 TA= 1.839047020412961E+02 A = 1.569989087924590E+02 AD= 3.134221451527794E+02 PR= 7.180458827341582E+05 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 9.960067688189447E-01 QR= 5.776674958716829E-01 IN= 1.170061394985416E+02 OM= 1.671223617689211E+02 W = 1.289295465141435E+02 Tp= 2399953.093783334363 N = 5.668459377541317E-04 MA= 7.065190794394188E+01 TA= 1.770443824204224E+02 A = 1.446616711329516E+02 AD= 2.887456747700315E+02 PR= 6.350931990909834E+05 $$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 = '1858 L1' TABLE_TYPE = 'ELEMENTS' START_TIME = '1600-01-01' STOP_TIME = '2200-01-01' STEP_SIZE = '600 years' CENTER = '@0' OUT_UNITS = 'AU-D'