******************************************************************************* JPL/HORIZONS PANSTARRS (C/2017 K2) 2024-May-20 14:20:20 Rec #:90004410 (+COV) Soln.date: 2024-May-07_13:42:21 # obs: 2062 (2013-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459329.5 ! 2021-Apr-25.0000000 (TDB) RMSW= n.a. EC= 1.000535772980367 QR= 1.797685223434788 TP= 2459933.2797761173 OM= 88.24647445961963 W= 236.1871953433862 IN= 87.55139001918343 A= -3355.311464574771 MA= -.003061846220956608ADIST= 9.999999E99 PER= 9.999999E99 N= 5.071E-6 ANGMOM= .032622063 DAN= 8.114100000000001 DDN= 2.31011 L= 271.8963389 B= -56.1091662 MOID= 1.09173 TP= 2022-Dec-19.7797761173 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 8.7 M2= n.a. k1= 4.5 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= 3.416313648224E-8 A2= -7.056936621666E-9 A3= -9.07410800457E-9 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#129, data arc: 2013-05-12 to 2024-04-28 2: k1=4.5; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Mon May 20 14:20:20 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: PANSTARRS (C/2017 K2) {source: JPL#129} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2022-Jul-11 00:00:00.0000 UT Stop time : A.D. 2022-Jul-17 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.240517.p240810 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-17. PREDICTS-> 2024-AUG-09 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= 2459329.5 ! 2021-Apr-25.0000000 (TDB) RMSW= n.a. EC= 1.000535772980367 QR= 1.797685223434788 TP= 2459933.2797761173 OM= 88.24647445961963 W= 236.1871953433862 IN= 87.55139001918343 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-3.412677182689189E-01 Y=-5.202561610097790E+00 Z= 3.937343829986496E+00 VX= 3.954777737475936E-04 VY= 3.444495758565750E-03 VZ=-8.868550240825866E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 8.7 M2= n.a. k1= 4.5 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= 3.416313648224E-8 A2= -7.056936621666E-9 A3= -9.07410800457E-9 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN delta deldot RNG_3sigma RNGRT_3sig ************************************************************************** $$SOE 2022-Jul-11 00:00 1.80998197025027 -2.2224398 884.2737 0.0000303 2022-Jul-11 03:00 1.80982476880735 -2.1323287 884.4951 0.0000303 2022-Jul-11 06:00 1.80967406930489 -2.0423252 884.7152 0.0000304 2022-Jul-11 09:00 1.80952986393626 -1.9524303 884.9340 0.0000304 2022-Jul-11 12:00 1.80939214482888 -1.8626449 885.1514 0.0000304 2022-Jul-11 15:00 1.80926090404524 -1.7729698 885.3675 0.0000304 2022-Jul-11 18:00 1.80913613358373 -1.6834061 885.5823 0.0000305 2022-Jul-11 21:00 1.80901782537954 -1.5939544 885.7958 0.0000305 2022-Jul-12 00:00 1.80890597130537 -1.5046158 886.0079 0.0000305 2022-Jul-12 03:00 1.80880056317207 -1.4153910 886.2187 0.0000305 2022-Jul-12 06:00 1.80870159272927 -1.3262808 886.4282 0.0000306 2022-Jul-12 09:00 1.80860905166582 -1.2372863 886.6364 0.0000306 2022-Jul-12 12:00 1.80852293161018 -1.1484080 886.8433 0.0000306 2022-Jul-12 15:00 1.80844322413070 -1.0596470 887.0488 0.0000306 2022-Jul-12 18:00 1.80836992073581 -0.9710040 887.2530 0.0000306 2022-Jul-12 21:00 1.80830301287411 -0.8824799 887.4559 0.0000307 2022-Jul-13 00:00 1.80824249193432 -0.7940754 887.6575 0.0000307 2022-Jul-13 03:00 1.80818834924516 -0.7057914 887.8578 0.0000307 2022-Jul-13 06:00 1.80814057607515 -0.6176288 888.0568 0.0000307 2022-Jul-13 09:00 1.80809916363225 -0.5295884 888.2544 0.0000308 2022-Jul-13 12:00 1.80806410306344 -0.4416710 888.4508 0.0000308 2022-Jul-13 15:00 1.80803538545418 -0.3538775 888.6458 0.0000308 2022-Jul-13 18:00 1.80801300182783 -0.2662088 888.8395 0.0000308 2022-Jul-13 21:00 1.80799694314491 -0.1786657 889.0320 0.0000309 2022-Jul-14 00:00 1.80798720030235 -0.0912492 889.2231 0.0000309 2022-Jul-14 03:00 1.80798376413258 -0.0039600 889.4129 0.0000309 2022-Jul-14 06:00 1.80798662540262 0.0832008 889.6015 0.0000309 2022-Jul-14 09:00 1.80799577481307 0.1702323 889.7887 0.0000310 2022-Jul-14 12:00 1.80801120299709 0.2571336 889.9746 0.0000310 2022-Jul-14 15:00 1.80803290051922 0.3439038 890.1593 0.0000310 2022-Jul-14 18:00 1.80806085787429 0.4305419 890.3427 0.0000310 2022-Jul-14 21:00 1.80809506548620 0.5170468 890.5247 0.0000311 2022-Jul-15 00:00 1.80813551370672 0.6034175 890.7055 0.0000311 2022-Jul-15 03:00 1.80818219281424 0.6896532 890.8850 0.0000311 2022-Jul-15 06:00 1.80823509301255 0.7757526 891.0633 0.0000311 2022-Jul-15 09:00 1.80829420442955 0.8617147 891.2402 0.0000312 2022-Jul-15 12:00 1.80835951711603 0.9475386 891.4159 0.0000312 2022-Jul-15 15:00 1.80843102104442 1.0332229 891.5903 0.0000312 2022-Jul-15 18:00 1.80850870610758 1.1187668 891.7635 0.0000312 2022-Jul-15 21:00 1.80859256211758 1.2041690 891.9354 0.0000312 2022-Jul-16 00:00 1.80868257880454 1.2894283 892.1060 0.0000313 2022-Jul-16 03:00 1.80877874581553 1.3745437 892.2753 0.0000313 2022-Jul-16 06:00 1.80888105271340 1.4595140 892.4434 0.0000313 2022-Jul-16 09:00 1.80898948897583 1.5443379 892.6103 0.0000313 2022-Jul-16 12:00 1.80910404399425 1.6290143 892.7759 0.0000314 2022-Jul-16 15:00 1.80922470707294 1.7135419 892.9403 0.0000314 2022-Jul-16 18:00 1.80935146742813 1.7979196 893.1034 0.0000314 2022-Jul-16 21:00 1.80948431418719 1.8821460 893.2652 0.0000314 2022-Jul-17 00:00 1.80962323638782 1.9662201 893.4259 0.0000315 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, 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 = '2017 K2' QUANTITIES = '20,39' START_TIME = '2022-Jul-11' STEP_SIZE = '3 hours' STOP_TIME = '2022-Jul-17'