******************************************************************************* JPL/HORIZONS Nishimura (C/2023 P1) 2024-Apr-30 19:16:43 Rec #:90004781 (+COV) Soln.date: 2024-Apr-29_15:03:29 # obs: 626 (2023-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460191.5 ! 2023-Sep-04.0000000 (TDB) RMSW= n.a. EC= .9960963798173834 QR= .2251526928767475 TP= 2460205.1414658786 OM= 66.83455232530974 W= 116.2979124238178 IN= 132.4763821762641 A= 57.67792007003825 MA= 359.9693061950717 ADIST= 115.1306874471997 PER= 438.04889439455 N= .002250037 ANGMOM= .011532163 DAN= .80443 DDN= .31182 L= 300.6372798 B= 41.3930319 MOID= .0784978 TP= 2023-Sep-17.6414658786 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.2 M2= n.a. k1= 8.25 k2= n.a. PHCOF= n.a. Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= -8.092964291573E-9 A2= -5.774477869272E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#25, data arc: 2023-01-19 to 2024-04-23 2: k1=8.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue Apr 30 19:16:43 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Nishimura (C/2023 P1) {source: JPL#25} 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. 1601-Jan-01 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= 2460191.5 ! 2023-Sep-04.0000000 (TDB) RMSW= n.a. EC= .9960963798173834 QR= .2251526928767475 TP= 2460205.1414658786 OM= 66.83455232530974 W= 116.2979124238178 IN= 132.4763821762641 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.926232923613816E-01 Y= 2.996944823020806E-01 Z= 2.709569655802549E-01 VX=-4.681036368480072E-03 VY=-3.375925931950676E-02 VZ=-4.429436276914637E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.2 M2= n.a. k1= 8.25 k2= n.a. PHCOF= n.a. Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= -8.092964291573E-9 A2= -5.774477869272E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2305447.500000000 = A.D. 1600-Jan-01 00:00:00.0000 TDB EC= 9.961219650914546E-01 QR= 2.221553598074330E-01 IN= 1.324354454637973E+02 OM= 6.695359499318718E+01 W = 1.164685334318061E+02 Tp= 2301871.828302721493 N = 2.274718360038527E-03 MA= 8.133646059269527E+00 TA= 1.702652077968555E+02 A = 5.728554926565776E+01 AD= 1.143489431715081E+02 PR= 1.582613506464610E+05 $$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 = '2023 P1' TABLE_TYPE = 'ELEMENTS' START_TIME = '1600-01-01' STOP_TIME = '1601-01-01' STEP_SIZE = '100 years' CENTER = '@0' OUT_UNITS = 'AU-D'