API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 66P/du Toit 2024-May-04 16:53:03 Rec #:90000691 (+COV) Soln.date: 2019-Jun-03_14:53:20 # obs: 547 (1974-2018) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456961.5 ! 2014-Oct-31.0000000 (TDB) RMSW= n.a. EC= .7865681713017859 QR= 1.285451447234088 TP= 2458258.9689476853 OM= 21.99985095509755 W= 257.342734110419 IN= 18.6689713312349 A= 6.022772962563499 MA= 273.4820324828277 ADIST= 10.76009447789291 PER= 14.780970166009 N= .06668211 ANGMOM= .026068682 DAN= 2.77479 DDN= 1.95892 L= 278.6641094 B= -18.1991598 MOID= .43827701 TP= 2018-May-20.4689476853 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 15.7 M2= n.a. k1= 7. 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= 7.681994885206E-10 A2= -8.894691243768E-11 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K184/8, data arc: 1974-03-22 to 2018-11-10 2: k1=7.; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sat May 4 16:53:03 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 66P/du Toit {source: JPL#K184/8} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2033-Apr-15 00:00:00.0000 UT Stop time : A.D. 2033-Apr-21 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined 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.240503.p240727 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-03. PREDICTS-> 2024-JUL-26 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= 2456961.5 ! 2014-Oct-31.0000000 (TDB) RMSW= n.a. EC= .7865681713017859 QR= 1.285451447234088 TP= 2458258.9689476853 OM= 21.99985095509755 W= 257.342734110419 IN= 18.6689713312349 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-4.190875253015601E+00 Y= 5.395434095967693E+00 Z= 5.331781443373083E+00 VX=-1.070464995737766E-03 VY=-3.294271952435172E-03 VZ=-2.676044506870070E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 15.7 M2= n.a. k1= 7. 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= 7.681994885206E-10 A2= -8.894691243768E-11 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2033-Apr-15 00:00 1.294211344793 -0.8767677 2033-Apr-15 03:00 1.294149131492 -0.8467383 2033-Apr-15 06:00 1.294089086350 -0.8167029 2033-Apr-15 09:00 1.294031209796 -0.7866617 2033-Apr-15 12:00 1.293975502247 -0.7566148 2033-Apr-15 15:00 1.293921964100 -0.7265624 2033-Apr-15 18:00 1.293870595739 -0.6965049 2033-Apr-15 21:00 1.293821397532 -0.6664424 2033-Apr-16 00:00 1.293774369833 -0.6363750 2033-Apr-16 03:00 1.293729512978 -0.6063032 2033-Apr-16 06:00 1.293686827288 -0.5762269 2033-Apr-16 09:00 1.293646313071 -0.5461465 2033-Apr-16 12:00 1.293607970616 -0.5160622 2033-Apr-16 15:00 1.293571800198 -0.4859742 2033-Apr-16 18:00 1.293537802078 -0.4558827 2033-Apr-16 21:00 1.293505976499 -0.4257880 2033-Apr-17 00:00 1.293476323689 -0.3956901 2033-Apr-17 03:00 1.293448843862 -0.3655894 2033-Apr-17 06:00 1.293423537214 -0.3354861 2033-Apr-17 09:00 1.293400403928 -0.3053804 2033-Apr-17 12:00 1.293379444169 -0.2752724 2033-Apr-17 15:00 1.293360658088 -0.2451625 2033-Apr-17 18:00 1.293344045821 -0.2150509 2033-Apr-17 21:00 1.293329607486 -0.1849376 2033-Apr-18 00:00 1.293317343187 -0.1548231 2033-Apr-18 03:00 1.293307253012 -0.1247074 2033-Apr-18 06:00 1.293299337034 -0.0945908 2033-Apr-18 09:00 1.293293595310 -0.0644735 2033-Apr-18 12:00 1.293290027882 -0.0343558 2033-Apr-18 15:00 1.293288634774 -0.0042378 2033-Apr-18 18:00 1.293289415998 0.0258802 2033-Apr-18 21:00 1.293292371547 0.0559981 2033-Apr-19 00:00 1.293297501400 0.0861155 2033-Apr-19 03:00 1.293304805522 0.1162324 2033-Apr-19 06:00 1.293314283859 0.1463484 2033-Apr-19 09:00 1.293325936343 0.1764634 2033-Apr-19 12:00 1.293339762892 0.2065771 2033-Apr-19 15:00 1.293355763406 0.2366893 2033-Apr-19 18:00 1.293373937770 0.2667998 2033-Apr-19 21:00 1.293394285854 0.2969085 2033-Apr-20 00:00 1.293416807512 0.3270150 2033-Apr-20 03:00 1.293441502582 0.3571191 2033-Apr-20 06:00 1.293468370888 0.3872208 2033-Apr-20 09:00 1.293497412237 0.4173196 2033-Apr-20 12:00 1.293528626420 0.4474154 2033-Apr-20 15:00 1.293562013215 0.4775081 2033-Apr-20 18:00 1.293597572380 0.5075973 2033-Apr-20 21:00 1.293635303663 0.5376829 2033-Apr-21 00:00 1.293675206791 0.5677647 $$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 *******************************************************************************