******************************************************************************* JPL/HORIZONS 9P/Tempel 1 2023-Jan-29 17:01:08 Rec #:90000191 (+COV) Soln.date: 2023-Jan-23_10:50:36 # obs: 3196 (2008-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457392.5 ! 2016-Jan-05.0000000 (TDB) RMSW= n.a. EC= .5097999804189542 QR= 1.542431379316903 TP= 2457603.0601539891 OM= 68.76456904995311 W= 179.1882980775259 IN= 10.47325642682407 A= 3.146534715839377 MA= 322.8181091274171 ADIST= 4.750638052361851 PER= 5.5815779437711 N= .176585599 ANGMOM= .026250893 DAN= 4.75014 DDN= 1.54248 L= 247.9663884 B= .1475436 MOID= .52771801 TP= 2016-Aug-02.5601539891 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3. M1= 12.8 M2= n.a. k1= 9.25 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= 2.97038257122E-11 A2= 1.200092374347E-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#K223/33, data arc: 2008-10-25 to 2023-01-03 2: k1=9.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sun Jan 29 17:01:08 2023 Pasadena, USA / Horizons ******************************************************************************* Target body name: 9P/Tempel 1 {source: JPL#K223/33} 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 (R_eq= 696000.000) km 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.230126.p230421 EOP coverage : DATA-BASED 1962-JAN-20 TO 2023-JAN-26. PREDICTS-> 2023-APR-20 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= 2457392.5 ! 2016-Jan-05.0000000 (TDB) RMSW= n.a. EC= .5097999804189542 QR= 1.542431379316903 TP= 2457603.0601539891 OM= 68.76456904995311 W= 179.1882980775259 IN= 10.47325642682407 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.132495037824681E+00 Y= 8.052332916161303E-01 Z= 8.275338802179315E-01 VX= 2.213130305148093E-04 VY=-1.086716657845270E-02 VZ=-5.644521506084116E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3. M1= 12.8 M2= n.a. k1= 9.25 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= 2.97038257122E-11 A2= 1.200092374347E-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 1.772045747653 -0.3324635 2028-Feb-08 03:00 1.772022086052 -0.3230168 2028-Feb-08 06:00 1.771999106487 -0.3135695 2028-Feb-08 09:00 1.771976809004 -0.3041216 2028-Feb-08 12:00 1.771955193647 -0.2946731 2028-Feb-08 15:00 1.771934260459 -0.2852239 2028-Feb-08 18:00 1.771914009481 -0.2757743 2028-Feb-08 21:00 1.771894440755 -0.2663241 2028-Feb-09 00:00 1.771875554318 -0.2568733 2028-Feb-09 03:00 1.771857350208 -0.2474220 2028-Feb-09 06:00 1.771839828461 -0.2379703 2028-Feb-09 09:00 1.771822989112 -0.2285181 2028-Feb-09 12:00 1.771806832194 -0.2190654 2028-Feb-09 15:00 1.771791357740 -0.2096123 2028-Feb-09 18:00 1.771776565780 -0.2001587 2028-Feb-09 21:00 1.771762456343 -0.1907048 2028-Feb-10 00:00 1.771749029458 -0.1812505 2028-Feb-10 03:00 1.771736285152 -0.1717959 2028-Feb-10 06:00 1.771724223448 -0.1623408 2028-Feb-10 09:00 1.771712844372 -0.1528855 2028-Feb-10 12:00 1.771702147946 -0.1434299 2028-Feb-10 15:00 1.771692134192 -0.1339740 2028-Feb-10 18:00 1.771682803128 -0.1245178 2028-Feb-10 21:00 1.771674154774 -0.1150614 2028-Feb-11 00:00 1.771666189147 -0.1056047 2028-Feb-11 03:00 1.771658906262 -0.0961478 2028-Feb-11 06:00 1.771652306135 -0.0866908 2028-Feb-11 09:00 1.771646388778 -0.0772335 2028-Feb-11 12:00 1.771641154202 -0.0677762 2028-Feb-11 15:00 1.771636602419 -0.0583186 2028-Feb-11 18:00 1.771632733438 -0.0488610 2028-Feb-11 21:00 1.771629547265 -0.0394033 2028-Feb-12 00:00 1.771627043908 -0.0299455 2028-Feb-12 03:00 1.771625223371 -0.0204876 2028-Feb-12 06:00 1.771624085657 -0.0110297 2028-Feb-12 09:00 1.771623630771 -0.0015717 2028-Feb-12 12:00 1.771623858711 0.0078862 2028-Feb-12 15:00 1.771624769477 0.0173441 2028-Feb-12 18:00 1.771626363069 0.0268020 2028-Feb-12 21:00 1.771628639482 0.0362598 2028-Feb-13 00:00 1.771631598712 0.0457176 2028-Feb-13 03:00 1.771635240754 0.0551753 2028-Feb-13 06:00 1.771639565599 0.0646328 2028-Feb-13 09:00 1.771644573240 0.0740903 2028-Feb-13 12:00 1.771650263666 0.0835475 2028-Feb-13 15:00 1.771656636866 0.0930047 2028-Feb-13 18:00 1.771663692827 0.1024616 2028-Feb-13 21:00 1.771671431536 0.1119183 2028-Feb-14 00:00 1.771679852977 0.1213748 2028-Feb-14 03:00 1.771688957134 0.1308311 2028-Feb-14 06:00 1.771698743987 0.1402871 2028-Feb-14 09:00 1.771709213518 0.1497428 2028-Feb-14 12:00 1.771720365706 0.1591983 2028-Feb-14 15:00 1.771732200529 0.1686534 2028-Feb-14 18:00 1.771744717964 0.1781082 2028-Feb-14 21:00 1.771757917984 0.1875626 2028-Feb-15 00:00 1.771771800565 0.1970166 2028-Feb-15 03:00 1.771786365678 0.2064703 2028-Feb-15 06:00 1.771801613295 0.2159236 2028-Feb-15 09:00 1.771817543386 0.2253764 2028-Feb-15 12:00 1.771834155918 0.2348288 2028-Feb-15 15:00 1.771851450859 0.2442807 2028-Feb-15 18:00 1.771869428174 0.2537321 2028-Feb-15 21:00 1.771888087828 0.2631830 2028-Feb-16 00:00 1.771907429784 0.2726334 $$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'