******************************************************************************* JPL/HORIZONS 9P/Tempel 1 2024-Apr-19 15:39:35 Rec #:90000191 (+COV) Soln.date: 2024-Jan-16_15:11:42 # obs: 3264 (2008-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457450.5 ! 2016-Mar-03.0000000 (TDB) RMSW= n.a. EC= .5097303440148174 QR= 1.542530450367674 TP= 2457603.0673848162 OM= 68.75570898836558 W= 179.1945054082475 IN= 10.47332142324269 A= 3.146289866273702 MA= 333.055652021317 ADIST= 4.75004928217973 PER= 5.5809264554808 N= .176606212 ANGMOM= .02625113 DAN= 4.74956 DDN= 1.54258 L= 247.9636325 B= .1464163 MOID= .52822602 TP= 2016-Aug-02.5673848162 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3. M1= 12.9 M2= n.a. k1= 9. 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= 1.983974361792E-11 A2= 1.186861656606E-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#K223/45, data arc: 2008-10-25 to 2024-01-05 2: k1=9.; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Apr 19 15:39:35 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 9P/Tempel 1 {source: JPL#K223/45} 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 {East-longitude positive} Target radii : 3.1, 2.1, 2.1 km {Equator_a, b, pole_c} 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.240419.p240713 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-19. PREDICTS-> 2024-JUL-12 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= 2457450.5 ! 2016-Mar-03.0000000 (TDB) RMSW= n.a. EC= .5097303440148174 QR= 1.542530450367674 TP= 2457603.0673848162 OM= 68.75570898836558 W= 179.1945054082475 IN= 10.47332142324269 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.034221200034968E+00 Y= 1.516968668588693E-01 Z= 4.716354311394754E-01 VX= 3.374239808484575E-03 VY=-1.155614600068008E-02 VZ=-6.609864762452190E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3. M1= 12.9 M2= n.a. k1= 9. 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= 1.983974361792E-11 A2= 1.186861656606E-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 1.772046000302 -0.3324740 2028-Feb-08 03:00 1.772022337937 -0.3230274 2028-Feb-08 06:00 1.771999357609 -0.3135801 2028-Feb-08 09:00 1.771977059362 -0.3041322 2028-Feb-08 12:00 1.771955443241 -0.2946836 2028-Feb-08 15:00 1.771934509289 -0.2852345 2028-Feb-08 18:00 1.771914257547 -0.2757849 2028-Feb-08 21:00 1.771894688055 -0.2663347 2028-Feb-09 00:00 1.771875800853 -0.2568839 2028-Feb-09 03:00 1.771857595977 -0.2474326 2028-Feb-09 06:00 1.771840073465 -0.2379809 2028-Feb-09 09:00 1.771823233349 -0.2285287 2028-Feb-09 12:00 1.771807075665 -0.2190760 2028-Feb-09 15:00 1.771791600444 -0.2096229 2028-Feb-09 18:00 1.771776807717 -0.2001694 2028-Feb-09 21:00 1.771762697513 -0.1907155 2028-Feb-10 00:00 1.771749269861 -0.1812612 2028-Feb-10 03:00 1.771736524786 -0.1718065 2028-Feb-10 06:00 1.771724462314 -0.1623515 2028-Feb-10 09:00 1.771713082469 -0.1528962 2028-Feb-10 12:00 1.771702385275 -0.1434405 2028-Feb-10 15:00 1.771692370751 -0.1339846 2028-Feb-10 18:00 1.771683038918 -0.1245284 2028-Feb-10 21:00 1.771674389794 -0.1150720 2028-Feb-11 00:00 1.771666423397 -0.1056154 2028-Feb-11 03:00 1.771659139742 -0.0961585 2028-Feb-11 06:00 1.771652538844 -0.0867014 2028-Feb-11 09:00 1.771646620716 -0.0772442 2028-Feb-11 12:00 1.771641385369 -0.0677868 2028-Feb-11 15:00 1.771636832815 -0.0583293 2028-Feb-11 18:00 1.771632963061 -0.0488717 2028-Feb-11 21:00 1.771629776117 -0.0394140 2028-Feb-12 00:00 1.771627271987 -0.0299562 2028-Feb-12 03:00 1.771625450677 -0.0204983 2028-Feb-12 06:00 1.771624312192 -0.0110404 2028-Feb-12 09:00 1.771623856531 -0.0015824 2028-Feb-12 12:00 1.771624083698 0.0078755 2028-Feb-12 15:00 1.771624993691 0.0173334 2028-Feb-12 18:00 1.771626586509 0.0267913 2028-Feb-12 21:00 1.771628862148 0.0362491 2028-Feb-13 00:00 1.771631820604 0.0457069 2028-Feb-13 03:00 1.771635461870 0.0551645 2028-Feb-13 06:00 1.771639785941 0.0646221 2028-Feb-13 09:00 1.771644792806 0.0740795 2028-Feb-13 12:00 1.771650482457 0.0835368 2028-Feb-13 15:00 1.771656854881 0.0929939 2028-Feb-13 18:00 1.771663910067 0.1024508 2028-Feb-13 21:00 1.771671648000 0.1119076 2028-Feb-14 00:00 1.771680068664 0.1213641 2028-Feb-14 03:00 1.771689172044 0.1308203 2028-Feb-14 06:00 1.771698958120 0.1402763 2028-Feb-14 09:00 1.771709426874 0.1497321 2028-Feb-14 12:00 1.771720578285 0.1591875 2028-Feb-14 15:00 1.771732412330 0.1686426 2028-Feb-14 18:00 1.771744928987 0.1780974 2028-Feb-14 21:00 1.771758128229 0.1875518 2028-Feb-15 00:00 1.771772010031 0.1970059 2028-Feb-15 03:00 1.771786574366 0.2064595 2028-Feb-15 06:00 1.771801821204 0.2159128 2028-Feb-15 09:00 1.771817750516 0.2253656 2028-Feb-15 12:00 1.771834362269 0.2348180 2028-Feb-15 15:00 1.771851656430 0.2442699 2028-Feb-15 18:00 1.771869632966 0.2537213 2028-Feb-15 21:00 1.771888291840 0.2631722 2028-Feb-16 00:00 1.771907633015 0.2726226 $$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 = '90000191' START_TIME = '2028-Feb-08' STOP_TIME = '2028-Feb-16' STEP_SIZE = '3 hours' QUANTITIES = '19'