******************************************************************************* JPL/HORIZONS 22P/Kopff 2024-May-04 05:38:05 Rec #:90000339 (+COV) Soln.date: 2024-Apr-16_10:01:05 # obs: 2672 (2013-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458539.5 ! 2019-Feb-25.0000000 (TDB) RMSW= n.a. EC= .5486159682205004 QR= 1.554762666192961 TP= 2459656.3898638892 OM= 120.8355825412058 W= 162.9125205126131 IN= 4.739863437877374 A= 3.44443435463056 MA= 187.7982521718208 ADIST= 5.334106043068159 PER= 6.3927109879114 N= .154179703 ANGMOM= .026692261 DAN= 5.0625 DDN= 1.57946 L= 283.8031522 B= 1.3912697 MOID= .53912902 TP= 2022-Mar-17.8898638892 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 1.5 M1= 11.9 M2= n.a. k1= 9.75 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#K222/41, data arc: 2013-12-30 to 2024-04-09 2: k1=9.75; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat May 4 05:38:05 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 22P/Kopff {source: JPL#K222/41} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2028-Jun-25 00:00:00.0000 UT Stop time : A.D. 2028-Jul-01 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 1.5 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.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= 2458539.5 ! 2019-Feb-25.0000000 (TDB) RMSW= n.a. EC= .5486159682205004 QR= 1.554762666192961 TP= 2459656.3898638892 OM= 120.8355825412058 W= 162.9125205126131 IN= 4.739863437877374 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.514033936009847E+00 Y= 4.728052102804289E+00 Z= 1.930824962917486E+00 VX=-4.709020194091013E-03 VY=-1.711411526107989E-03 VZ=-2.983444852075954E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 1.5 M1= 11.9 M2= n.a. k1= 9.75 k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2028-Jun-25 00:00 1.320280727805 -0.6134000 2028-Jun-25 03:00 1.320237231427 -0.5915791 2028-Jun-25 06:00 1.320195310521 -0.5697549 2028-Jun-25 09:00 1.320154965321 -0.5479274 2028-Jun-25 12:00 1.320116196053 -0.5260970 2028-Jun-25 15:00 1.320079002932 -0.5042635 2028-Jun-25 18:00 1.320043386166 -0.4824273 2028-Jun-25 21:00 1.320009345954 -0.4605884 2028-Jun-26 00:00 1.319976882486 -0.4387468 2028-Jun-26 03:00 1.319945995943 -0.4169029 2028-Jun-26 06:00 1.319916686497 -0.3950566 2028-Jun-26 09:00 1.319888954312 -0.3732081 2028-Jun-26 12:00 1.319862799543 -0.3513575 2028-Jun-26 15:00 1.319838222335 -0.3295050 2028-Jun-26 18:00 1.319815222825 -0.3076506 2028-Jun-26 21:00 1.319793801143 -0.2857945 2028-Jun-27 00:00 1.319773957407 -0.2639368 2028-Jun-27 03:00 1.319755691728 -0.2420776 2028-Jun-27 06:00 1.319739004208 -0.2202170 2028-Jun-27 09:00 1.319723894939 -0.1983553 2028-Jun-27 12:00 1.319710364007 -0.1764924 2028-Jun-27 15:00 1.319698411486 -0.1546285 2028-Jun-27 18:00 1.319688037443 -0.1327638 2028-Jun-27 21:00 1.319679241935 -0.1108984 2028-Jun-28 00:00 1.319672025012 -0.0890323 2028-Jun-28 03:00 1.319666386713 -0.0671657 2028-Jun-28 06:00 1.319662327069 -0.0452987 2028-Jun-28 09:00 1.319659846104 -0.0234315 2028-Jun-28 12:00 1.319658943829 -0.0015642 2028-Jun-28 15:00 1.319659620250 0.0203031 2028-Jun-28 18:00 1.319661875364 0.0421704 2028-Jun-28 21:00 1.319665709155 0.0640373 2028-Jun-29 00:00 1.319671121604 0.0859040 2028-Jun-29 03:00 1.319678112678 0.1077701 2028-Jun-29 06:00 1.319686682339 0.1296356 2028-Jun-29 09:00 1.319696830538 0.1515004 2028-Jun-29 12:00 1.319708557217 0.1733644 2028-Jun-29 15:00 1.319721862311 0.1952274 2028-Jun-29 18:00 1.319736745746 0.2170893 2028-Jun-29 21:00 1.319753207436 0.2389499 2028-Jun-30 00:00 1.319771247289 0.2608093 2028-Jun-30 03:00 1.319790865205 0.2826671 2028-Jun-30 06:00 1.319812061073 0.3045234 2028-Jun-30 09:00 1.319834834773 0.3263780 2028-Jun-30 12:00 1.319859186178 0.3482308 2028-Jun-30 15:00 1.319885115152 0.3700815 2028-Jun-30 18:00 1.319912621548 0.3919303 2028-Jun-30 21:00 1.319941705212 0.4137768 2028-Jul-01 00:00 1.319972365982 0.4356210 $$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 ******************************************************************************* !$$SOF COMMAND = '90000339' START_TIME = '2028-Jun-25' STOP_TIME = '2028-Jul-01' STEP_SIZE = '3 hours' QUANTITIES = '19'