API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 67P/Churyumov-Gerasimenko 2024-Apr-28 04:59:33 Rec #:90000700 (+COV) Soln.date: 2024-Feb-01_08:49:50 # obs: 8608 (2008-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457305.5 ! 2015-Oct-10.0000000 (TDB) RMSW= n.a. EC= .6409081306555051 QR= 1.243265641416762 TP= 2457247.5886578634 OM= 50.13557380441372 W= 12.79824973415729 IN= 7.040294906760007 A= 3.462249489765068 MA= 8.859927418784899 ADIST= 5.681233338113374 PER= 6.4423711636744 N= .152991229 ANGMOM= .024570022 DAN= 1.25545 DDN= 5.44002 L= 62.8404707 B= 1.5558267 MOID= .25693199 TP= 2015-Aug-13.0886578634 Comet physical (GM= km^3/s^2; RAD= km): GM= 6.622E-7 RAD= 1.7 M1= 12.9 M2= n.a. k1= 7.5 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= 45.68888 A1= 1.042451038957E-9 A2= -6.739627569914E-11 A3= 2.960945479572E-10 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K213/6, data arc: 2008-06-01 to 2023-04-26 2: k1=7.5; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sun Apr 28 04:59:33 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 67P/Churyumov-Gerasimenko {source: JPL#K213/6} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2223-Feb-01 00:00:00.0000 UT Stop time : A.D. 2223-Feb-11 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : IAU {East-longitude positive} Target radii : 2.4, 1.55, 1.2 km {Equator_a, b, pole_c} Center geodetic : 0.0, 0.0, -6378.137 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : ITRF93 {East-longitude positive} Center radii : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : MOON (R_eq= 1737.400) km {source: DE441} Rel. light bend : Sun {source: DE441} Rel. lght bnd GM: 1.3271E+11 km^3/s^2 Small-body perts: Yes {source: SB441-N16} Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Calendar mode : Mixed Julian/Gregorian EOP file : eop.240426.p240720 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-26. PREDICTS-> 2024-JUL-19 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO ) Table cut-offs 2: Solar elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2457305.5 ! 2015-Oct-10.0000000 (TDB) RMSW= n.a. EC= .6409081306555051 QR= 1.243265641416762 TP= 2457247.5886578634 OM= 50.13557380441372 W= 12.79824973415729 IN= 7.040294906760007 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-5.017310686400782E-01 Y= 1.157300945518487E+00 Z= 6.681306043628923E-01 VX=-1.804796777549247E-02 VY=-1.430719761134233E-03 VZ= 1.171342386004957E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= 6.622E-7 RAD= 1.7 M1= 12.9 M2= n.a. k1= 7.5 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= 45.68888 A1= 1.042451038957E-9 A2= -6.739627569914E-11 A3= 2.960945479572E-10 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2223-Feb-01 00:00 0.823053967562 -3.2779114 2223-Feb-01 03:00 0.822819764982 -3.2099037 2223-Feb-01 06:00 0.822590475444 -3.1418119 2223-Feb-01 09:00 0.822366104961 -3.0736376 2223-Feb-01 12:00 0.822146659425 -3.0053826 2223-Feb-01 15:00 0.821932144604 -2.9370485 2223-Feb-01 18:00 0.821722566146 -2.8686370 2223-Feb-01 21:00 0.821517929573 -2.8001500 2223-Feb-02 00:00 0.821318240286 -2.7315889 2223-Feb-02 03:00 0.821123503557 -2.6629557 2223-Feb-02 06:00 0.820933724538 -2.5942520 2223-Feb-02 09:00 0.820748908251 -2.5254797 2223-Feb-02 12:00 0.820569059594 -2.4566403 2223-Feb-02 15:00 0.820394183338 -2.3877358 2223-Feb-02 18:00 0.820224284127 -2.3187678 2223-Feb-02 21:00 0.820059366475 -2.2497381 2223-Feb-03 00:00 0.819899434771 -2.1806486 2223-Feb-03 03:00 0.819744493272 -2.1115009 2223-Feb-03 06:00 0.819594546108 -2.0422970 2223-Feb-03 09:00 0.819449597278 -1.9730386 2223-Feb-03 12:00 0.819309650651 -1.9037274 2223-Feb-03 15:00 0.819174709967 -1.8343654 2223-Feb-03 18:00 0.819044778833 -1.7649544 2223-Feb-03 21:00 0.818919860726 -1.6954960 2223-Feb-04 00:00 0.818799958988 -1.6259923 2223-Feb-04 03:00 0.818685076834 -1.5564450 2223-Feb-04 06:00 0.818575217343 -1.4868559 2223-Feb-04 09:00 0.818470383462 -1.4172269 2223-Feb-04 12:00 0.818370578004 -1.3475599 2223-Feb-04 15:00 0.818275803650 -1.2778567 2223-Feb-04 18:00 0.818186062946 -1.2081191 2223-Feb-04 21:00 0.818101358305 -1.1383490 2223-Feb-05 00:00 0.818021692003 -1.0685483 2223-Feb-05 03:00 0.817947066186 -0.9987188 2223-Feb-05 06:00 0.817877482860 -0.9288625 2223-Feb-05 09:00 0.817812943900 -0.8589811 2223-Feb-05 12:00 0.817753451044 -0.7890766 2223-Feb-05 15:00 0.817699005893 -0.7191508 2223-Feb-05 18:00 0.817649609916 -0.6492056 2223-Feb-05 21:00 0.817605264442 -0.5792429 2223-Feb-06 00:00 0.817565970667 -0.5092646 2223-Feb-06 03:00 0.817531729651 -0.4392726 2223-Feb-06 06:00 0.817502542314 -0.3692687 2223-Feb-06 09:00 0.817478409445 -0.2992549 2223-Feb-06 12:00 0.817459331693 -0.2292330 2223-Feb-06 15:00 0.817445309570 -0.1592049 2223-Feb-06 18:00 0.817436343455 -0.0891726 2223-Feb-06 21:00 0.817432433586 -0.0191378 2223-Feb-07 00:00 0.817433580069 0.0508974 2223-Feb-07 03:00 0.817439782868 0.1209313 2223-Feb-07 06:00 0.817451041816 0.1909619 2223-Feb-07 09:00 0.817467356605 0.2609873 2223-Feb-07 12:00 0.817488726792 0.3310056 2223-Feb-07 15:00 0.817515151798 0.4010149 2223-Feb-07 18:00 0.817546630907 0.4710135 2223-Feb-07 21:00 0.817583163267 0.5409992 2223-Feb-08 00:00 0.817624747888 0.6109704 2223-Feb-08 03:00 0.817671383646 0.6809250 2223-Feb-08 06:00 0.817723069280 0.7508613 2223-Feb-08 09:00 0.817779803393 0.8207772 2223-Feb-08 12:00 0.817841584452 0.8906711 2223-Feb-08 15:00 0.817908410789 0.9605408 2223-Feb-08 18:00 0.817980280600 1.0303847 2223-Feb-08 21:00 0.818057191947 1.1002008 2223-Feb-09 00:00 0.818139142756 1.1699873 2223-Feb-09 03:00 0.818226130818 1.2397422 2223-Feb-09 06:00 0.818318153789 1.3094638 2223-Feb-09 09:00 0.818415209194 1.3791502 2223-Feb-09 12:00 0.818517294419 1.4487994 2223-Feb-09 15:00 0.818624406721 1.5184098 2223-Feb-09 18:00 0.818736543221 1.5879794 2223-Feb-09 21:00 0.818853700908 1.6575063 2223-Feb-10 00:00 0.818975876637 1.7269888 2223-Feb-10 03:00 0.819103067132 1.7964250 2223-Feb-10 06:00 0.819235268984 1.8658132 2223-Feb-10 09:00 0.819372478654 1.9351513 2223-Feb-10 12:00 0.819514692470 2.0044378 2223-Feb-10 15:00 0.819661906630 2.0736707 2223-Feb-10 18:00 0.819814117202 2.1428482 2223-Feb-10 21:00 0.819971320123 2.2119686 2223-Feb-11 00:00 0.820133511200 2.2810301 $$EOE ******************************************************************************* Column meaning: TIME Times PRIOR to 1962 are UT1, a mean-solar time closely related to the prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1 using integer leap-seconds for 1972 and later years. Conversion from the internal Barycentric Dynamical Time (TDB) of solar system dynamics to the non-uniform civil UT time-scale requested for output has not been determined for UTC times after the next July or January 1st. Therefore, the last known leap-second is used as a constant over future intervals. Time tags refer to the UT time-scale conversion from TDB on Earth regardless of observer location within the solar system, although clock rates may differ due to the local gravity field and no analog to "UT" may be defined for that location. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. 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. NOTE: "n.a." in output means quantity "not available" at the print-time. 'r rdot' = The Sun's apparent range ("r", light-time aberrated) and range-rate ("rdot") relative to the target center, as seen by the observer. A positive "rdot" means the target center was moving away from the Sun, negative means moving toward the Sun. Units: AU and KM/S 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 *******************************************************************************