API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 104P/Kowal 2 2024-Jun-04 09:50:48 Rec #:90000962 (+COV) Soln.date: 2023-Apr-05_03:16:58 # obs: 1551 (2016-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459486.5 ! 2021-Sep-29.0000000 (TDB) RMSW= n.a. EC= .6654527191420735 QR= 1.073098415756543 TP= 2459591.1174740419 OM= 207.2135256417651 W= 227.2458876459766 IN= 5.701090049412283 A= 3.207613623415639 MA= 342.0512077925057 ADIST= 5.342128831074735 PER= 5.744884163983 N= .171565911 ANGMOM= .022996798 DAN= 3.25979 DDN= 1.23107 L= 74.3177694 B= -4.1829715 MOID= .111206 TP= 2022-Jan-11.6174740419 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 1. M1= 14.6 M2= 16.9 k1= 12.75 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= 49.47347 A1= 2.154789686203E-8 A2= -7.202269434929E-9 A3= -2.150064148009E-10 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K222/11, data arc: 2016-01-04 to 2022-06-12 2: k1=12.75, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Tue Jun 4 09:50:48 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 104P/Kowal 2 {source: JPL#K222/11} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2027-Oct-09 00:00:00.0000 UT Stop time : A.D. 2027-Oct-15 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 1. 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.240603.p240827 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-JUN-03. PREDICTS-> 2024-AUG-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= 2459486.5 ! 2021-Sep-29.0000000 (TDB) RMSW= n.a. EC= .6654527191420735 QR= 1.073098415756543 TP= 2459591.1174740419 OM= 207.2135256417651 W= 227.2458876459766 IN= 5.701090049412283 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.661481537520794E+00 Y=-3.278010541828544E-01 Z=-2.921597123098169E-02 VX=-5.805657327596318E-03 VY= 1.426799556362270E-02 VZ= 4.458680581509217E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 1. M1= 14.6 M2= 16.9 k1= 12.75 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= 49.47347 A1= 2.154789686203E-8 A2= -7.202269434929E-9 A3= -2.150064148009E-10 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2027-Oct-09 00:00 1.073644399367 -1.0722838 2027-Oct-09 03:00 1.073568319748 -1.0353970 2027-Oct-09 06:00 1.073494903512 -0.9984986 2027-Oct-09 09:00 1.073424151480 -0.9615890 2027-Oct-09 12:00 1.073356064441 -0.9246687 2027-Oct-09 15:00 1.073290643156 -0.8877381 2027-Oct-09 18:00 1.073227888358 -0.8507975 2027-Oct-09 21:00 1.073167800747 -0.8138474 2027-Oct-10 00:00 1.073110380997 -0.7768882 2027-Oct-10 03:00 1.073055629748 -0.7399203 2027-Oct-10 06:00 1.073003547615 -0.7029441 2027-Oct-10 09:00 1.072954135179 -0.6659601 2027-Oct-10 12:00 1.072907392993 -0.6289686 2027-Oct-10 15:00 1.072863321582 -0.5919700 2027-Oct-10 18:00 1.072821921438 -0.5549648 2027-Oct-10 21:00 1.072783193026 -0.5179534 2027-Oct-11 00:00 1.072747136778 -0.4809362 2027-Oct-11 03:00 1.072713753098 -0.4439136 2027-Oct-11 06:00 1.072683042361 -0.4068860 2027-Oct-11 09:00 1.072655004910 -0.3698538 2027-Oct-11 12:00 1.072629641060 -0.3328175 2027-Oct-11 15:00 1.072606951093 -0.2957775 2027-Oct-11 18:00 1.072586935266 -0.2587342 2027-Oct-11 21:00 1.072569593800 -0.2216879 2027-Oct-12 00:00 1.072554926891 -0.1846392 2027-Oct-12 03:00 1.072542934703 -0.1475884 2027-Oct-12 06:00 1.072533617369 -0.1105359 2027-Oct-12 09:00 1.072526974994 -0.0734822 2027-Oct-12 12:00 1.072523007651 -0.0364277 2027-Oct-12 15:00 1.072521715385 0.0006272 2027-Oct-12 18:00 1.072523098209 0.0376821 2027-Oct-12 21:00 1.072527156108 0.0747366 2027-Oct-13 00:00 1.072533889035 0.1117902 2027-Oct-13 03:00 1.072543296913 0.1488426 2027-Oct-13 06:00 1.072555379638 0.1858933 2027-Oct-13 09:00 1.072570137071 0.2229419 2027-Oct-13 12:00 1.072587569048 0.2599880 2027-Oct-13 15:00 1.072607675372 0.2970312 2027-Oct-13 18:00 1.072630455817 0.3340710 2027-Oct-13 21:00 1.072655910126 0.3711071 2027-Oct-14 00:00 1.072684038014 0.4081391 2027-Oct-14 03:00 1.072714839163 0.4451664 2027-Oct-14 06:00 1.072748313229 0.4821887 2027-Oct-14 09:00 1.072784459834 0.5192057 2027-Oct-14 12:00 1.072823278573 0.5562168 2027-Oct-14 15:00 1.072864769010 0.5932216 2027-Oct-14 18:00 1.072908930679 0.6302198 2027-Oct-14 21:00 1.072955763085 0.6672110 2027-Oct-15 00:00 1.073005265701 0.7041946 $$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 *******************************************************************************