******************************************************************************* JPL/HORIZONS 22P/Kopff 2024-Jun-04 18:34:24 Rec #:90000339 (+COV) Soln.date: 2024-May-30_15:52:34 # obs: 2677 (2013-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458540.5 ! 2019-Feb-26.0000000 (TDB) RMSW= n.a. EC= .5486171303482588 QR= 1.55475741932962 TP= 2459656.3895408907 OM= 120.8355485426762 W= 162.9126151718708 IN= 4.739868774285967 A= 3.444431598676249 MA= 187.9522751872197 ADIST= 5.334105778022877 PER= 6.3927033155271 N= .154179888 ANGMOM= .026692226 DAN= 5.0625 DDN= 1.57946 L= 283.8032127 B= 1.3912638 MOID= .53879899 TP= 2022-Mar-17.8895408907 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#K222/42, data arc: 2013-12-30 to 2024-04-09 2: k1=9.75; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue Jun 4 18:34:24 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 22P/Kopff {source: JPL#K222/42} 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.240604.p240828 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-JUN-04. PREDICTS-> 2024-AUG-27 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= 2458540.5 ! 2019-Feb-26.0000000 (TDB) RMSW= n.a. EC= .5486171303482588 QR= 1.55475741932962 TP= 2459656.3895408907 OM= 120.8355485426762 W= 162.9126151718708 IN= 4.739868774285967 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.518741411184338E+00 Y= 4.726336067254571E+00 Z= 1.930524865254877E+00 VX=-4.706046446333328E-03 VY=-1.720660372280296E-03 VZ=-3.021218707350074E-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 1.320280644975 -0.6134006 2028-Jun-25 03:00 1.320237148553 -0.5915797 2028-Jun-25 06:00 1.320195227603 -0.5697555 2028-Jun-25 09:00 1.320154882360 -0.5479280 2028-Jun-25 12:00 1.320116113048 -0.5260975 2028-Jun-25 15:00 1.320078919884 -0.5042641 2028-Jun-25 18:00 1.320043303076 -0.4824279 2028-Jun-25 21:00 1.320009262821 -0.4605889 2028-Jun-26 00:00 1.319976799311 -0.4387474 2028-Jun-26 03:00 1.319945912726 -0.4169035 2028-Jun-26 06:00 1.319916603238 -0.3950572 2028-Jun-26 09:00 1.319888871011 -0.3732087 2028-Jun-26 12:00 1.319862716201 -0.3513581 2028-Jun-26 15:00 1.319838138952 -0.3295055 2028-Jun-26 18:00 1.319815139401 -0.3076511 2028-Jun-26 21:00 1.319793717679 -0.2857950 2028-Jun-27 00:00 1.319773873902 -0.2639373 2028-Jun-27 03:00 1.319755608183 -0.2420781 2028-Jun-27 06:00 1.319738920623 -0.2202176 2028-Jun-27 09:00 1.319723811315 -0.1983558 2028-Jun-27 12:00 1.319710280344 -0.1764929 2028-Jun-27 15:00 1.319698327784 -0.1546291 2028-Jun-27 18:00 1.319687953702 -0.1327644 2028-Jun-27 21:00 1.319679158156 -0.1108989 2028-Jun-28 00:00 1.319671941194 -0.0890328 2028-Jun-28 03:00 1.319666302857 -0.0671662 2028-Jun-28 06:00 1.319662243176 -0.0452993 2028-Jun-28 09:00 1.319659762173 -0.0234321 2028-Jun-28 12:00 1.319658859861 -0.0015647 2028-Jun-28 15:00 1.319659536245 0.0203026 2028-Jun-28 18:00 1.319661791322 0.0421698 2028-Jun-28 21:00 1.319665625077 0.0640368 2028-Jun-29 00:00 1.319671037489 0.0859035 2028-Jun-29 03:00 1.319678028527 0.1077696 2028-Jun-29 06:00 1.319686598152 0.1296351 2028-Jun-29 09:00 1.319696746316 0.1515000 2028-Jun-29 12:00 1.319708472960 0.1733639 2028-Jun-29 15:00 1.319721778020 0.1952269 2028-Jun-29 18:00 1.319736661419 0.2170888 2028-Jun-29 21:00 1.319753123075 0.2389495 2028-Jun-30 00:00 1.319771162894 0.2608088 2028-Jun-30 03:00 1.319790780776 0.2826667 2028-Jun-30 06:00 1.319811976610 0.3045230 2028-Jun-30 09:00 1.319834750277 0.3263775 2028-Jun-30 12:00 1.319859101649 0.3482303 2028-Jun-30 15:00 1.319885030589 0.3700811 2028-Jun-30 18:00 1.319912536953 0.3919298 2028-Jun-30 21:00 1.319941620585 0.4137764 2028-Jul-01 00:00 1.319972281323 0.4356206 $$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' QUANTITIES = '19' START_TIME = '2028-Jun-25' STEP_SIZE = '3 hours' STOP_TIME = '2028-Jul-01'