API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 97P/Metcalf-Brewington 2024-May-02 19:49:37 Rec #:90000931 (+COV) Soln.date: 2024-Apr-18_00:13:54 # obs: 391 (2000-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457856.5 ! 2017-Apr-13.0000000 (TDB) RMSW= n.a. EC= .4569418410779376 QR= 2.606597834011945 TP= 2459631.1197746452 OM= 185.1708679402614 W= 228.218375178932 IN= 17.86018637617331 A= 4.7998502392191 MA= 193.671044681199 ADIST= 6.993102644426255 PER= 10.5159795510406 N= .093726531 ANGMOM= .033522744 DAN= 5.46 DDN= 2.9113 L= 51.9798484 B= -13.22052 MOID= 1.65568995 TP= 2022-Feb-20.6197746452 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 1.7 M1= 13.7 M2= n.a. k1= 7.75 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= -4.018312931061E-8 A2= -1.295911073685E-8 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K223/12, data arc: 2000-09-01 to 2022-01-28 2: k1=7.75; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Thu May 2 19:49:37 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 97P/Metcalf-Brewington {source: JPL#K223/12} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2032-Jul-16 00:00:00.0000 UT Stop time : A.D. 2032-Jul-23 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 1.7 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.240502.p240726 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-02. PREDICTS-> 2024-JUL-25 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= 2457856.5 ! 2017-Apr-13.0000000 (TDB) RMSW= n.a. EC= .4569418410779376 QR= 2.606597834011945 TP= 2459631.1197746452 OM= 185.1708679402614 W= 228.218375178932 IN= 17.86018637617331 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-3.597030046143207E+00 Y=-5.923175506337137E+00 Z=-6.856486119020622E-01 VX= 4.328405150974001E-03 VY=-2.143267501664798E-03 VZ=-9.165972666640229E-05 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 1.7 M1= 13.7 M2= n.a. k1= 7.75 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= -4.018312931061E-8 A2= -1.295911073685E-8 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 2032-Jul-16 00:00 2.585255205687 -0.1239057 2032-Jul-16 03:00 2.585246418936 -0.1195045 2032-Jul-16 06:00 2.585237949938 -0.1151033 2032-Jul-16 09:00 2.585229798696 -0.1107020 2032-Jul-16 12:00 2.585221965217 -0.1063007 2032-Jul-16 15:00 2.585214449507 -0.1018992 2032-Jul-16 18:00 2.585207251569 -0.0974977 2032-Jul-16 21:00 2.585200371409 -0.0930962 2032-Jul-17 00:00 2.585193809031 -0.0886945 2032-Jul-17 03:00 2.585187564440 -0.0842928 2032-Jul-17 06:00 2.585181637640 -0.0798911 2032-Jul-17 09:00 2.585176028635 -0.0754893 2032-Jul-17 12:00 2.585170737429 -0.0710874 2032-Jul-17 15:00 2.585165764025 -0.0666855 2032-Jul-17 18:00 2.585161108427 -0.0622836 2032-Jul-17 21:00 2.585156770639 -0.0578816 2032-Jul-18 00:00 2.585152750662 -0.0534796 2032-Jul-18 03:00 2.585149048499 -0.0490775 2032-Jul-18 06:00 2.585145664155 -0.0446754 2032-Jul-18 09:00 2.585142597630 -0.0402733 2032-Jul-18 12:00 2.585139848927 -0.0358711 2032-Jul-18 15:00 2.585137418047 -0.0314689 2032-Jul-18 18:00 2.585135304994 -0.0270667 2032-Jul-18 21:00 2.585133509768 -0.0226645 2032-Jul-19 00:00 2.585132032370 -0.0182623 2032-Jul-19 03:00 2.585130872802 -0.0138600 2032-Jul-19 06:00 2.585130031065 -0.0094577 2032-Jul-19 09:00 2.585129507160 -0.0050555 2032-Jul-19 12:00 2.585129301087 -0.0006532 2032-Jul-19 15:00 2.585129412846 0.0037491 2032-Jul-19 18:00 2.585129842437 0.0081514 2032-Jul-19 21:00 2.585130589862 0.0125537 2032-Jul-20 00:00 2.585131655119 0.0169560 2032-Jul-20 03:00 2.585133038207 0.0213582 2032-Jul-20 06:00 2.585134739127 0.0257605 2032-Jul-20 09:00 2.585136757877 0.0301628 2032-Jul-20 12:00 2.585139094457 0.0345650 2032-Jul-20 15:00 2.585141748864 0.0389672 2032-Jul-20 18:00 2.585144721098 0.0433694 2032-Jul-20 21:00 2.585148011157 0.0477716 2032-Jul-21 00:00 2.585151619040 0.0521737 2032-Jul-21 03:00 2.585155544743 0.0565758 2032-Jul-21 06:00 2.585159788265 0.0609779 2032-Jul-21 09:00 2.585164349603 0.0653799 2032-Jul-21 12:00 2.585169228755 0.0697819 2032-Jul-21 15:00 2.585174425717 0.0741839 2032-Jul-21 18:00 2.585179940487 0.0785858 2032-Jul-21 21:00 2.585185773062 0.0829877 2032-Jul-22 00:00 2.585191923437 0.0873895 2032-Jul-22 03:00 2.585198391610 0.0917913 2032-Jul-22 06:00 2.585205177575 0.0961930 2032-Jul-22 09:00 2.585212281330 0.1005946 2032-Jul-22 12:00 2.585219702870 0.1049962 2032-Jul-22 15:00 2.585227442190 0.1093977 2032-Jul-22 18:00 2.585235499286 0.1137992 2032-Jul-22 21:00 2.585243874153 0.1182006 2032-Jul-23 00:00 2.585252566785 0.1226019 $$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 *******************************************************************************