******************************************************************************* JPL/HORIZONS Great September comet (C/1882 R1-A) 2024-Apr-27 22:03:58 Rec #:90001746 Soln.date: - # obs: 4 (1882-1883) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2408709.5 ! 1882-Sep-21.0000000 (TDB) RMSW= n.a. EC= .999899 QR= .00775 TP= 2408706.2241000002 OM= 347.6563 W= 69.5843 IN= 142.0112 A= 76.73267326731326 MA= .00480357102839433 ADIST= 153.4575965346265 PER= 672.16933451889 N= .001466336 ANGMOM= .00214159 DAN= .01149 DDN= .0238 L= 282.9361384 B= 35.2289563 TP= 1882-Sep-17.7241000002 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: 1882-10-10 to 1883-02-28 2: epoch may be 2408710.0 (hour ambiguous: 12h/0h); time units are UT, but set to E ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Apr 27 22:03:58 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Great September comet (C/1882 R1-A) {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= 2408709.5 ! 1882-Sep-21.0000000 (TDB) RMSW= n.a. EC= .999899 QR= .00775 TP= 2408706.2241000002 OM= 347.6563 W= 69.5843 IN= 142.0112 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.218937686800583E-01 Y= 1.983908417216965E-01 Z=-3.243398900556439E-02 VX=-1.786532129118658E-02 VY= 4.598353293098484E-02 VZ=-8.938017003667023E-03 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 ******************************************************************************* $$SOE 2305447.500000000 = A.D. 1600-Jan-01 00:00:00.0000 TDB EC= 9.998980300215861E-01 QR= 7.672697857785084E-03 IN= 1.413883511684134E+02 OM= 3.447118979811582E+02 W = 6.725191929907344E+01 Tp= 2408705.373263320420 N = 1.511059625195096E-03 MA= 2.039711967282844E+02 TA= 1.800862201098336E+02 A = 7.524467472807508E+01 AD= 1.504816767582924E+02 PR= 2.382434114428275E+05 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 9.998898876436295E-01 QR= 7.970890383886747E-03 IN= 1.431929288633188E+02 OM= 3.525899779082425E+02 W = 7.356366011223872E+01 Tp= 2633516.033262342680 N = 1.601360401169627E-03 MA= 1.855757684386026E+02 TA= 1.800206959367815E+02 A = 7.238870047481794E+01 AD= 1.447694300592520E+02 PR= 2.248088561057570E+05 $$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 = '1882 R1-A' TABLE_TYPE = 'ELEMENTS' START_TIME = '1600-01-01' STOP_TIME = '2200-01-01' STEP_SIZE = '600 years' CENTER = '@0' OUT_UNITS = 'AU-D'