******************************************************************************* JPL/HORIZONS 9P/Tempel 1 2022-Sep-28 05:55:30 Rec #:90000191 (+COV) Soln.date: 2022-Sep-19_09:19:56 # obs: 3007 (2008-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457238.5 ! 2015-Aug-04.0000000 (TDB) RMSW= n.a. EC= .5100229222824865 QR= 1.54130944891987 TP= 2457603.0394869694 OM= 68.80229889611608 W= 179.1979929584179 IN= 10.4761092491227 A= 3.145676642874467 MA= 295.6012354963807 ADIST= 4.750043836829065 PER= 5.5792950757705 N= .176657852 ANGMOM= .026243281 DAN= 4.74956 DDN= 1.54136 L= 248.0136589 B= .1458198 MOID= .52823502 TP= 2016-Aug-02.5394869694 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3. M1= 12.7 M2= n.a. k1= 9.5 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= 5.266587715596E-11 A2= 1.224206294864E-11 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K223/18, data arc: 2008-10-25 to 2022-09-15 2: k1=9.5; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed Sep 28 05:55:30 2022 Pasadena, USA / Horizons ******************************************************************************* Target body name: 9P/Tempel 1 {source: JPL#K223/18} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2028-Feb-08 00:00:00.0000 UT Stop time : A.D. 2028-Feb-16 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : IAU {West-longitude positive} Target radii : 3.1 x 2.1 x 2.1 km {Equator, meridian, pole} Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : ITRF93 {East-longitude positive} Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole} 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 EOP file : eop.220927.p221220 EOP coverage : DATA-BASED 1962-JAN-20 TO 2022-SEP-27. PREDICTS-> 2022-DEC-19 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= 2457238.5 ! 2015-Aug-04.0000000 (TDB) RMSW= n.a. EC= .5100229222824865 QR= 1.54130944891987 TP= 2457603.0394869694 OM= 68.80229889611608 W= 179.1979929584179 IN= 10.4761092491227 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.788081289316201E+00 Y= 2.251044339635317E+00 Z= 1.506094343043626E+00 VX=-3.971032604620084E-03 VY=-7.858196465647015E-03 VZ=-3.281298400290233E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3. M1= 12.7 M2= n.a. k1= 9.5 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= 5.266587715596E-11 A2= 1.224206294864E-11 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 2028-Feb-08 00:00 1.772045106253 -0.3324307 2028-Feb-08 03:00 1.772021447017 -0.3229840 2028-Feb-08 06:00 1.771998469819 -0.3135367 2028-Feb-08 09:00 1.771976174703 -0.3040888 2028-Feb-08 12:00 1.771954561714 -0.2946403 2028-Feb-08 15:00 1.771933630894 -0.2851911 2028-Feb-08 18:00 1.771913382287 -0.2757415 2028-Feb-08 21:00 1.771893815930 -0.2662912 2028-Feb-09 00:00 1.771874931864 -0.2568405 2028-Feb-09 03:00 1.771856730126 -0.2473892 2028-Feb-09 06:00 1.771839210751 -0.2379374 2028-Feb-09 09:00 1.771822373776 -0.2284852 2028-Feb-09 12:00 1.771806219232 -0.2190325 2028-Feb-09 15:00 1.771790747153 -0.2095794 2028-Feb-09 18:00 1.771775957568 -0.2001258 2028-Feb-09 21:00 1.771761850508 -0.1906719 2028-Feb-10 00:00 1.771748426000 -0.1812176 2028-Feb-10 03:00 1.771735684071 -0.1717629 2028-Feb-10 06:00 1.771723624746 -0.1623079 2028-Feb-10 09:00 1.771712248049 -0.1528526 2028-Feb-10 12:00 1.771701554003 -0.1433969 2028-Feb-10 15:00 1.771691542628 -0.1339410 2028-Feb-10 18:00 1.771682213946 -0.1244848 2028-Feb-10 21:00 1.771673567974 -0.1150284 2028-Feb-11 00:00 1.771665604729 -0.1055717 2028-Feb-11 03:00 1.771658324228 -0.0961148 2028-Feb-11 06:00 1.771651726485 -0.0866577 2028-Feb-11 09:00 1.771645811512 -0.0772005 2028-Feb-11 12:00 1.771640579322 -0.0677431 2028-Feb-11 15:00 1.771636029925 -0.0582856 2028-Feb-11 18:00 1.771632163330 -0.0488279 2028-Feb-11 21:00 1.771628979544 -0.0393702 2028-Feb-12 00:00 1.771626478575 -0.0299124 2028-Feb-12 03:00 1.771624660427 -0.0204545 2028-Feb-12 06:00 1.771623525103 -0.0109966 2028-Feb-12 09:00 1.771623072606 -0.0015386 2028-Feb-12 12:00 1.771623302936 0.0079193 2028-Feb-12 15:00 1.771624216094 0.0173772 2028-Feb-12 18:00 1.771625812077 0.0268351 2028-Feb-12 21:00 1.771628090883 0.0362930 2028-Feb-13 00:00 1.771631052506 0.0457507 2028-Feb-13 03:00 1.771634696941 0.0552084 2028-Feb-13 06:00 1.771639024181 0.0646660 2028-Feb-13 09:00 1.771644034216 0.0741234 2028-Feb-13 12:00 1.771649727037 0.0835807 2028-Feb-13 15:00 1.771656102634 0.0930379 2028-Feb-13 18:00 1.771663160992 0.1024948 2028-Feb-13 21:00 1.771670902098 0.1119515 2028-Feb-14 00:00 1.771679325937 0.1214081 2028-Feb-14 03:00 1.771688432491 0.1308643 2028-Feb-14 06:00 1.771698221743 0.1403203 2028-Feb-14 09:00 1.771708693674 0.1497761 2028-Feb-14 12:00 1.771719848262 0.1592315 2028-Feb-14 15:00 1.771731685486 0.1686866 2028-Feb-14 18:00 1.771744205321 0.1781414 2028-Feb-14 21:00 1.771757407743 0.1875959 2028-Feb-15 00:00 1.771771292726 0.1970499 2028-Feb-15 03:00 1.771785860242 0.2065036 2028-Feb-15 06:00 1.771801110262 0.2159569 2028-Feb-15 09:00 1.771817042756 0.2254097 2028-Feb-15 12:00 1.771833657693 0.2348621 2028-Feb-15 15:00 1.771850955038 0.2443140 2028-Feb-15 18:00 1.771868934759 0.2537654 2028-Feb-15 21:00 1.771887596819 0.2632163 2028-Feb-16 00:00 1.771906941181 0.2726667 $$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 dates prior to 1582-Oct-15 are in the Julian calendar system. Later calendar dates are in the Gregorian system. 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 = '90000191' START_TIME = '2028-Feb-08' STOP_TIME = '2028-Feb-16' STEP_SIZE = '3 hours' QUANTITIES = '19'