API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 112P/Urata-Niijima 2024-May-10 09:47:54 Rec #:90000992 (+COV) Soln.date: 2021-Sep-20_10:16:48 # obs: 617 (1986-2020) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2455471.5 ! 2010-Oct-02.0000000 (TDB) RMSW= n.a. EC= .5874927433257943 QR= 1.458797689159836 TP= 2456468.0008607558 OM= 31.9318348258102 W= 21.35220190190807 IN= 24.20145291581962 A= 3.536417034020762 MA= 212.3149476144006 ADIST= 5.614036378881689 PER= 6.6504864500256 N= .148203638 ANGMOM= .026177903 DAN= 1.49682 DDN= 5.1141 L= 51.556768 B= 8.5841245 MOID= .484878 TP= 2013-Jun-24.5008607558 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= .900 M1= 14.5 M2= 17.9 k1= 15. k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 0. A2= 6.357400212437E-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#35, data arc: 1986-10-04 to 2020-04-25 2: k1=15., k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Fri May 10 09:47:54 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 112P/Urata-Niijima {source: JPL#35} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2026-Sep-18 00:00:00.0000 UT Stop time : A.D. 2026-Sep-24 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 0.9 km 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.240509.p240802 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-09. PREDICTS-> 2024-AUG-01 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= 2455471.5 ! 2010-Oct-02.0000000 (TDB) RMSW= n.a. EC= .5874927433257943 QR= 1.458797689159836 TP= 2456468.0008607558 OM= 31.9318348258102 W= 21.35220190190807 IN= 24.20145291581962 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.552851506688144E+00 Y=-3.843535904102052E+00 Z=-2.960609807738270E+00 VX= 4.662718296436901E-03 VY=-1.420776300276813E-04 VZ=-1.586208663579032E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= .900 M1= 14.5 M2= 17.9 k1= 15. k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 0. A2= 6.357400212437E-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 2026-Sep-18 00:00 1.441788625037 -0.5637477 2026-Sep-18 03:00 1.441748581075 -0.5455695 2026-Sep-18 06:00 1.441709849586 -0.5273890 2026-Sep-18 09:00 1.441672430736 -0.5092062 2026-Sep-18 12:00 1.441636324684 -0.4910212 2026-Sep-18 15:00 1.441601531585 -0.4728342 2026-Sep-18 18:00 1.441568051588 -0.4546451 2026-Sep-18 21:00 1.441535884834 -0.4364541 2026-Sep-19 00:00 1.441505031461 -0.4182613 2026-Sep-19 03:00 1.441475491601 -0.4000666 2026-Sep-19 06:00 1.441447265381 -0.3818702 2026-Sep-19 09:00 1.441420352919 -0.3636722 2026-Sep-19 12:00 1.441394754332 -0.3454727 2026-Sep-19 15:00 1.441370469728 -0.3272717 2026-Sep-19 18:00 1.441347499212 -0.3090692 2026-Sep-19 21:00 1.441325842880 -0.2908655 2026-Sep-20 00:00 1.441305500826 -0.2726605 2026-Sep-20 03:00 1.441286473137 -0.2544543 2026-Sep-20 06:00 1.441268759892 -0.2362471 2026-Sep-20 09:00 1.441252361169 -0.2180388 2026-Sep-20 12:00 1.441237277036 -0.1998296 2026-Sep-20 15:00 1.441223507559 -0.1816196 2026-Sep-20 18:00 1.441211052795 -0.1634088 2026-Sep-20 21:00 1.441199912799 -0.1451973 2026-Sep-21 00:00 1.441190087616 -0.1269851 2026-Sep-21 03:00 1.441181577290 -0.1087724 2026-Sep-21 06:00 1.441174381856 -0.0905593 2026-Sep-21 09:00 1.441168501345 -0.0723458 2026-Sep-21 12:00 1.441163935781 -0.0541319 2026-Sep-21 15:00 1.441160685184 -0.0359179 2026-Sep-21 18:00 1.441158749568 -0.0177036 2026-Sep-21 21:00 1.441158128940 0.0005107 2026-Sep-22 00:00 1.441158823303 0.0187250 2026-Sep-22 03:00 1.441160832654 0.0369392 2026-Sep-22 06:00 1.441164156984 0.0551532 2026-Sep-22 09:00 1.441168796278 0.0733670 2026-Sep-22 12:00 1.441174750516 0.0915805 2026-Sep-22 15:00 1.441182019673 0.1097936 2026-Sep-22 18:00 1.441190603716 0.1280063 2026-Sep-22 21:00 1.441200502610 0.1462184 2026-Sep-23 00:00 1.441211716311 0.1644298 2026-Sep-23 03:00 1.441224244771 0.1826406 2026-Sep-23 06:00 1.441238087936 0.2008506 2026-Sep-23 09:00 1.441253245747 0.2190597 2026-Sep-23 12:00 1.441269718139 0.2372678 2026-Sep-23 15:00 1.441287505040 0.2554750 2026-Sep-23 18:00 1.441306606374 0.2736810 2026-Sep-23 21:00 1.441327022059 0.2918859 2026-Sep-24 00:00 1.441348752009 0.3100896 $$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 *******************************************************************************