******************************************************************************* JPL/HORIZONS Nishimura (C/2023 P1) 2023-Sep-30 23:28:36 Rec #:90004763 (+COV) Soln.date: 2023-Sep-12_09:07:51 # obs: 477 (232 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460165.5 ! 2023-Aug-09.0000000 (TDB) RMSW= n.a. EC= .9960691352139032 QR= .2251502006691098 TP= 2460205.1415861701 OM= 66.83401805564438 W= 116.2991479802231 IN= 132.4771388264391 A= 57.2775236292657 MA= 359.9098680540378 ADIST= 114.3298970578623 PER= 433.49545853669 N= .002273672 ANGMOM= .01153202 DAN= .80442 DDN= .31181 L= 300.6356569 B= 41.3918832 MOID= .0788212 TP= 2023-Sep-17.6415861701 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.7 M2= n.a. k1= 11.25 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#8, data arc: 2023-01-19 to 2023-09-08 2: k1=11.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Sep 30 23:28:36 2023 Pasadena, USA / Horizons ******************************************************************************* Target body name: Nishimura (C/2023 P1) {source: JPL#8} 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 : 2.9630927493983752E-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= 2460165.5 ! 2023-Aug-09.0000000 (TDB) RMSW= n.a. EC= .9960691352139032 QR= .2251502006691098 TP= 2460205.1415861701 OM= 66.83401805564438 W= 116.2991479802231 IN= 132.4771388264391 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 3.062725531074521E-01 Y= 1.011569412316817E+00 Z= 2.858777018757567E-01 VX= 1.395875061090939E-03 VY=-2.306393917863138E-02 VZ= 1.212117048092551E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.7 M2= n.a. k1= 11.25 k2= n.a. PHCOF= n.a. ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 9.961118921548037E-01 QR= 2.222315750876512E-01 IN= 1.324286518604681E+02 OM= 6.698048577142247E+01 W = 1.164891545566830E+02 Tp= 2302476.919955547899 N = 2.282412107879123E-03 MA= 1.735080099293440E+02 TA= 1.798563840786850E+02 A = 5.715674151431127E+01 AD= 1.140912514535349E+02 PR= 1.577278698957312E+05 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 9.958688329184023E-01 QR= 2.267489905839057E-01 IN= 1.325012446971105E+02 OM= 6.659391602731827E+01 W = 1.161187749264290E+02 Tp= 2460205.112501678988 N = 2.425416634010896E-03 MA= 1.561686660755668E+02 TA= 1.794527949123996E+02 A = 5.488739286144192E+01 AD= 1.095480367322999E+02 PR= 1.484281071350081E+05 $$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 = '1800-01-01' STOP_TIME = '2200-01-01' STEP_SIZE = '400 years' CENTER = '@0' OUT_UNITS = 'AU-D'