******************************************************************************* JPL/HORIZONS Great January comet (C/1910 A1) 2024-Apr-25 19:50:53 Rec #:90001830 (+COV) Soln.date: 2024-Apr-15_15:43:28 # obs: 25 (82 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2418705.5 ! 1910-Feb-03.0000000 (TDB) RMSW= n.a. EC= .9997801030496312 QR= .1289584769496926 TP= 2418689.0873915292 OM= 90.02943357081602 W= 320.8917558493254 IN= 138.7780238562125 A= 586.4495925631921 MA= .001139031277646598 ADIST= 1172.770226649435 PER= 14202.154589533 N= 6.940000000000001E-5 ANGMOM= .008735695999999999 DAN= .14523 DDN= 1.15018 L= 121.4729413 B= -24.5618357 MOID= .029453 TP= 1910-Jan-17.5873915292 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.= JPL#4, data arc: 1910-01-19 to 1910-04-11 2: ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu Apr 25 19:50:53 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Great January comet (C/1910 A1) {source: JPL#4} 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. 2000-Jan-01 00:00:00.0000 TDB Step-size : 200 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= 2418705.5 ! 1910-Feb-03.0000000 (TDB) RMSW= n.a. EC= .9997801030496312 QR= .1289584769496926 TP= 2418689.0873915292 OM= 90.02943357081602 W= 320.8917558493254 IN= 138.7780238562125 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 4.558960637412586E-01 Y=-1.201665616336666E-01 Z= 3.832611591713933E-01 VX= 2.153221988149655E-02 VY=-1.889627969342965E-02 VZ= 1.236266810311711E-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 ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.997697599784149E-01 QR= 1.279823421586816E-01 IN= 1.387134313695662E+02 OM= 9.008041573337987E+01 W = 3.209888354385882E+02 Tp= 2418689.233733487315 N = 7.525604671494994E-05 MA= 3.569752537525511E+02 TA= 1.834397894871553E+02 A = 5.558648808212729E+02 AD= 1.111601779300387E+03 PR= 4.783668764366338E+06 2451544.500000000 = A.D. 2000-Jan-01 00:00:00.0000 TDB EC= 9.996983366722108E-01 QR= 1.291061804016687E-01 IN= 1.388199615180782E+02 OM= 8.995156022853800E+01 W = 3.207993430057477E+02 Tp= 2418688.955116684549 N = 1.113931493490809E-04 MA= 3.659882618132627E+00 TA= 1.763297662107256E+02 A = 4.279810255618114E+02 AD= 8.558329449432210E+02 PR= 3.231796588063431E+06 $$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 = '1910 A1' TABLE_TYPE = 'ELEMENTS' START_TIME = '1800-01-01' STOP_TIME = '2000-01-01' STEP_SIZE = '200 years' CENTER = '@0' OUT_UNITS = 'AU-D'