******************************************************************************* JPL/HORIZONS Gibbs (P/2011 C2) 2025-Dec-12 18:07:58 Rec #:90004110 (+COV) Soln.date: 2021-Apr-15_23:31:48 # obs: 184 (2011-2013) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2455845.5 ! 2011-Oct-11.0000000 (TDB) RMSW= n.a. EC= .2684718598624878 QR= 5.388547717622368 TP= 2455934.4093098161 OM= 12.20198083881589 W= 160.563611569923 IN= 10.91094365924068 A= 7.366152335041318 MA= 355.6168102804473 ADIST= 9.343756952460268 PER= 19.992598586392 N= .049299558 ANGMOM= .044973608 DAN= 9.152340000000001 DDN= 5.45434 L= 173.0912588 B= 3.6112126 MOID= 4.39801979 TP= 2012-Jan-07.9093098161 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7.1 M2= 12.9 k1= 12.75 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#28, data arc: 2011-01-30 to 2013-06-09 2: k1=12.75, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 18:07:58 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: Gibbs (P/2011 C2) {source: JPL#28} 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 : 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= 2455845.5 ! 2011-Oct-11.0000000 (TDB) RMSW= n.a. EC= .2684718598624878 QR= 5.388547717622368 TP= 2455934.4093098161 OM= 12.20198083881589 W= 160.563611569923 IN= 10.91094365924068 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-5.203101263450378E+00 Y= 1.064933693746952E+00 Z= 9.728810551839344E-01 VX=-1.966741275492450E-03 VY=-6.748366676892898E-03 VZ=-4.475506393844178E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7.1 M2= 12.9 k1= 12.75 k2= 5. PHCOF= .030 ******************************************************************************* JDTDB EC QR IN OM W Tp N MA TA A AD PR ******************************************************************************* $$SOE 2378496.500000000 = A.D. 1800-Jan-01 00:00:00.0000 TDB EC= 4.045041697737319E-01 QR= 5.361256770370730E+00 IN= 7.976572401178037E+00 OM= 3.850492350812433E+01 W = 1.532473451892865E+02 Tp= 2380757.776879760902 N = 3.651013434368527E-02 MA= 2.774404773316609E+02 TA= 2.331375522728563E+02 A = 9.003013116537920E+00 AD= 1.264476946270511E+01 PR= 9.860275960947401E+03 2451544.500000000 = A.D. 2000-Jan-01 00:00:00.0000 TDB EC= 2.670937889780111E-01 QR= 5.394628252177484E+00 IN= 1.090554786677823E+01 OM= 1.226821328829313E+01 W = 1.605955397865371E+02 Tp= 2448644.594901851844 N = 4.938847026852176E-02 MA= 1.432218767214179E+02 TA= 1.575178921112708E+02 A = 7.360598356309509E+00 AD= 9.326568460441536E+00 PR= 7.289150646754280E+03 2524593.500000000 = A.D. 2200-Jan-01 00:00:00.0000 TDB EC= 1.963707428886591E-01 QR= 3.646831700776545E+00 IN= 1.380565902999593E+01 OM= 2.499666442528903E+02 W = 1.087859415647080E+02 Tp= 2523458.174705487210 N = 1.020246896558505E-01 MA= 1.158312108310845E+02 TA= 1.338267216382179E+02 A = 4.537952878775399E+00 AD= 5.429074056774254E+00 PR= 3.528557658095812E+03 $$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 = '90004110' OUT_UNITS = 'AU-D' START_TIME = '1800-01-01' STEP_SIZE = '200 years' STOP_TIME = '2200-01-01' TABLE_TYPE = 'ELEMENTS'