API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 94P/Russell 4 2024-May-02 03:25:04 Rec #:90000920 (+COV) Soln.date: 2024-Feb-22_12:34:09 # obs: 2174 (1984-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456737.5 ! 2014-Mar-21.0000000 (TDB) RMSW= n.a. EC= .3641021131799065 QR= 2.232856217581 TP= 2457689.3203620631 OM= 70.90199547376905 W= 92.68107335001615 IN= 6.184115895270388 A= 3.511343981258918 MA= 217.4231548122293 ADIST= 4.789831744936835 PER= 6.5798844451963 N= .149793859 ANGMOM= .030021699 DAN= 3.09862 DDN= 2.99484 L= 163.5987386 B= 6.1773203 MOID= 1.25142002 TP= 2016-Oct-27.8203620631 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 13.4 M2= n.a. k1= 9. 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= 2.663334272802E-10 A2= 1.464678556658E-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#77, data arc: 1984-03-02 to 2024-02-08 2: k1=9.; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Thu May 2 03:25:04 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 94P/Russell 4 {source: JPL#77} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2029-Dec-15 00:00:00.0000 UT Stop time : A.D. 2029-Dec-19 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.240501.p240725 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-01. PREDICTS-> 2024-JUL-24 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= 2456737.5 ! 2014-Mar-21.0000000 (TDB) RMSW= n.a. EC= .3641021131799065 QR= 2.232856217581 TP= 2457689.3203620631 OM= 70.90199547376905 W= 92.68107335001615 IN= 6.184115895270388 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 4.614218398457583E+00 Y= 3.934742429814236E-01 Z=-3.355604836552997E-01 VX=-1.460660510856000E-03 VY= 5.718943080411826E-03 VZ= 2.889636021018324E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 13.4 M2= n.a. k1= 9. 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= 2.663334272802E-10 A2= 1.464678556658E-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 ************************************************** $$SOE 2029-Dec-15 00:00 2.220984603888 -0.1035096 2029-Dec-15 03:00 2.220977302420 -0.0987523 2029-Dec-15 06:00 2.220970344418 -0.0939950 2029-Dec-15 09:00 2.220963729890 -0.0892376 2029-Dec-15 12:00 2.220957458841 -0.0844801 2029-Dec-15 15:00 2.220951531277 -0.0797225 2029-Dec-15 18:00 2.220945947204 -0.0749649 2029-Dec-15 21:00 2.220940706627 -0.0702072 2029-Dec-16 00:00 2.220935809550 -0.0654494 2029-Dec-16 03:00 2.220931255978 -0.0606915 2029-Dec-16 06:00 2.220927045915 -0.0559336 2029-Dec-16 09:00 2.220923179365 -0.0511757 2029-Dec-16 12:00 2.220919656332 -0.0464177 2029-Dec-16 15:00 2.220916476819 -0.0416597 2029-Dec-16 18:00 2.220913640828 -0.0369016 2029-Dec-16 21:00 2.220911148364 -0.0321435 2029-Dec-17 00:00 2.220908999427 -0.0273853 2029-Dec-17 03:00 2.220907194020 -0.0226272 2029-Dec-17 06:00 2.220905732145 -0.0178690 2029-Dec-17 09:00 2.220904613803 -0.0131108 2029-Dec-17 12:00 2.220903838996 -0.0083526 2029-Dec-17 15:00 2.220903407724 -0.0035943 2029-Dec-17 18:00 2.220903319987 0.0011639 2029-Dec-17 21:00 2.220903575787 0.0059221 2029-Dec-18 00:00 2.220904175122 0.0106804 2029-Dec-18 03:00 2.220905117993 0.0154386 2029-Dec-18 06:00 2.220906404399 0.0201968 2029-Dec-18 09:00 2.220908034339 0.0249550 2029-Dec-18 12:00 2.220910007811 0.0297132 2029-Dec-18 15:00 2.220912324814 0.0344713 2029-Dec-18 18:00 2.220914985347 0.0392295 2029-Dec-18 21:00 2.220917989406 0.0439876 2029-Dec-19 00:00 2.220921336989 0.0487456 $$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 *******************************************************************************