******************************************************************************* JPL/HORIZONS Burnham-Slaughter (C/1958 R1) 2025-Dec-12 18:01:06 Rec #:90002007 (+COV) Soln.date: 2021-Apr-15_23:29:14 # obs: 40 (1958-1960) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2436679.5 ! 1959-Apr-21.0000000 (TDB) RMSW= n.a. EC= .999844920770664 QR= 1.628201741765237 TP= 2436639.0202507959 OM= 323.7782446207922 W= 100.7366243661841 IN= 61.25735988157741 A= 10499.16064670111 MA= 3.7086001856782E-5 ADIST= 20996.69309166046 PER= 1075821.1390348 N= 9.16E-7 ANGMOM= .031040857 DAN= 4.00149 DDN= 2.74487 L= 75.29803819999999 B= 59.4785847 MOID= 1.15786004 TP= 1959-Mar-11.5202507959 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= 13.7 k1= n.a. k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#2, data arc: 1958-09-14 to 1960-04-21 2: k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 18:01:06 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: Burnham-Slaughter (C/1958 R1) {source: JPL#2} 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. 2200-Jan-01 00:00:00.0000 TDB Step-size : 400 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= 2436679.5 ! 1959-Apr-21.0000000 (TDB) RMSW= n.a. EC= .999844920770664 QR= 1.628201741765237 TP= 2436639.0202507959 OM= 323.7782446207922 W= 100.7366243661841 IN= 61.25735988157741 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-4.424679299621238E-01 Y= 5.691347739931627E-01 Z= 1.557696313305273E+00 VX=-1.583395597444972E-02 VY= 9.153902246882952E-03 VZ=-3.203846232062000E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= 13.7 k1= n.a. k2= 5. PHCOF= .030 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.998712389000968E-01 QR= 1.628778707931913E+00 IN= 6.116754868313193E+01 OM= 3.238916942783676E+02 W = 1.007115970446180E+02 Tp= 2436638.786692423746 N = 6.932328702136749E-07 MA= 3.599596938557154E+02 TA= 1.914245028927542E+02 A = 1.264961785166164E+04 AD= 2.529760692461535E+04 PR= 5.193060160131145E+08 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 9.995989263113666E-01 QR= 1.627861543587675E+00 IN= 6.119936240587997E+01 OM= 3.236333098344414E+02 W = 1.007429825398947E+02 Tp= 2436639.636650027242 N = 3.814216304056794E-06 MA= 3.354750595942565E-01 TA= 1.701463087481285E+02 A = 4.058759249794140E+03 AD= 8.115890638044692E+03 PR= 9.438374001419494E+07 $$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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF CENTER = '@0' COMMAND = '1958 R1' OUT_UNITS = 'AU-D' START_TIME = '1800-01-01' STEP_SIZE = '400 years' STOP_TIME = '2200-01-01' TABLE_TYPE = 'ELEMENTS'