******************************************************************************* JPL/HORIZONS 8P/Tuttle 2024-Apr-25 05:43:59 Rec #:90000179 (+COV) Soln.date: 2022-May-02_08:47:13 # obs: 1768 (1967-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2454701.5 ! 2008-Aug-23.0000000 (TDB) RMSW= n.a. EC= .8197876162331501 QR= 1.027263094466541 TP= 2454492.5180154694 OM= 270.3421615706648 W= 207.5115175085094 IN= 54.98196882510133 A= 5.700291361749948 MA= 15.13447433003471 ADIST= 10.37331962903336 PER= 13.609863957772 N= .072419995 ANGMOM= .023519747 DAN= 6.84974 DDN= 1.0824 L= 106.9817681 B= -22.2287282 MOID= .0952731 TP= 2008-Jan-27.0180154694 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 2.25 M1= 14.6 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= 67.49843 A1= 4.215027019382E-10 A2= -1.735480735078E-11 A3= -4.638589918613E-11 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K215/24, data arc: 1967-01-07 to 2022-03-20 2: k1=4.5; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu Apr 25 05:43:59 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 8P/Tuttle {source: JPL#K215/24} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2035-Apr-10 00:00:00.0000 UT Stop time : A.D. 2035-Apr-25 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 2.25 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.240424.p240718 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-24. PREDICTS-> 2024-JUL-17 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= 2454701.5 ! 2008-Aug-23.0000000 (TDB) RMSW= n.a. EC= .8197876162331501 QR= 1.027263094466541 TP= 2454492.5180154694 OM= 270.3421615706648 W= 207.5115175085094 IN= 54.98196882510133 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-9.864289997171516E-01 Y=-1.498240543524788E+00 Z=-2.204898668514411E+00 VX= 5.293027799803131E-04 VY=-1.170277648747713E-02 VZ=-4.366306705801766E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 2.25 M1= 14.6 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= 67.49843 A1= 4.215027019382E-10 A2= -1.735480735078E-11 A3= -4.638589918613E-11 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2035-Apr-10 00:00 1.036162113466 -3.2569144 2035-Apr-10 03:00 1.035928724117 -3.2087617 2035-Apr-10 06:00 1.035698812716 -3.1605634 2035-Apr-10 09:00 1.035472382538 -3.1123200 2035-Apr-10 12:00 1.035249436809 -3.0640323 2035-Apr-10 15:00 1.035029978709 -3.0157009 2035-Apr-10 18:00 1.034814011373 -2.9673263 2035-Apr-10 21:00 1.034601537887 -2.9189093 2035-Apr-11 00:00 1.034392561292 -2.8704506 2035-Apr-11 03:00 1.034187084579 -2.8219507 2035-Apr-11 06:00 1.033985110695 -2.7734104 2035-Apr-11 09:00 1.033786642536 -2.7248302 2035-Apr-11 12:00 1.033591682953 -2.6762109 2035-Apr-11 15:00 1.033400234748 -2.6275531 2035-Apr-11 18:00 1.033212300674 -2.5788575 2035-Apr-11 21:00 1.033027883437 -2.5301248 2035-Apr-12 00:00 1.032846985694 -2.4813556 2035-Apr-12 03:00 1.032669610053 -2.4325506 2035-Apr-12 06:00 1.032495759076 -2.3837105 2035-Apr-12 09:00 1.032325435271 -2.3348359 2035-Apr-12 12:00 1.032158641101 -2.2859276 2035-Apr-12 15:00 1.031995378979 -2.2369862 2035-Apr-12 18:00 1.031835651268 -2.1880124 2035-Apr-12 21:00 1.031679460282 -2.1390070 2035-Apr-13 00:00 1.031526808284 -2.0899704 2035-Apr-13 03:00 1.031377697489 -2.0409036 2035-Apr-13 06:00 1.031232130061 -1.9918072 2035-Apr-13 09:00 1.031090108115 -1.9426817 2035-Apr-13 12:00 1.030951633715 -1.8935281 2035-Apr-13 15:00 1.030816708875 -1.8443469 2035-Apr-13 18:00 1.030685335557 -1.7951389 2035-Apr-13 21:00 1.030557515675 -1.7459047 2035-Apr-14 00:00 1.030433251092 -1.6966451 2035-Apr-14 03:00 1.030312543618 -1.6473607 2035-Apr-14 06:00 1.030195395014 -1.5980523 2035-Apr-14 09:00 1.030081806989 -1.5487206 2035-Apr-14 12:00 1.029971781202 -1.4993662 2035-Apr-14 15:00 1.029865319261 -1.4499900 2035-Apr-14 18:00 1.029762422720 -1.4005925 2035-Apr-14 21:00 1.029663093085 -1.3511746 2035-Apr-15 00:00 1.029567331808 -1.3017369 2035-Apr-15 03:00 1.029475140291 -1.2522802 2035-Apr-15 06:00 1.029386519883 -1.2028051 2035-Apr-15 09:00 1.029301471883 -1.1533124 2035-Apr-15 12:00 1.029219997536 -1.1038028 2035-Apr-15 15:00 1.029142098037 -1.0542770 2035-Apr-15 18:00 1.029067774528 -1.0047357 2035-Apr-15 21:00 1.028997028099 -0.9551797 2035-Apr-16 00:00 1.028929859788 -0.9056097 2035-Apr-16 03:00 1.028866270581 -0.8560265 2035-Apr-16 06:00 1.028806261411 -0.8064306 2035-Apr-16 09:00 1.028749833159 -0.7568229 2035-Apr-16 12:00 1.028696986655 -0.7072041 2035-Apr-16 15:00 1.028647722675 -0.6575749 2035-Apr-16 18:00 1.028602041943 -0.6079360 2035-Apr-16 21:00 1.028559945129 -0.5582882 2035-Apr-17 00:00 1.028521432854 -0.5086321 2035-Apr-17 03:00 1.028486505683 -0.4589686 2035-Apr-17 06:00 1.028455164130 -0.4092984 2035-Apr-17 09:00 1.028427408655 -0.3596221 2035-Apr-17 12:00 1.028403239668 -0.3099406 2035-Apr-17 15:00 1.028382657524 -0.2602544 2035-Apr-17 18:00 1.028365662525 -0.2105645 2035-Apr-17 21:00 1.028352254922 -0.1608714 2035-Apr-18 00:00 1.028342434912 -0.1111760 2035-Apr-18 03:00 1.028336202639 -0.0614790 2035-Apr-18 06:00 1.028333558196 -0.0117810 2035-Apr-18 09:00 1.028334501620 0.0379171 2035-Apr-18 12:00 1.028339032898 0.0876146 2035-Apr-18 15:00 1.028347151963 0.1373109 2035-Apr-18 18:00 1.028358858696 0.1870052 2035-Apr-18 21:00 1.028374152925 0.2366967 2035-Apr-19 00:00 1.028393034424 0.2863847 2035-Apr-19 03:00 1.028415502915 0.3360685 2035-Apr-19 06:00 1.028441558068 0.3857473 2035-Apr-19 09:00 1.028471199500 0.4354205 2035-Apr-19 12:00 1.028504426774 0.4850873 2035-Apr-19 15:00 1.028541239401 0.5347469 2035-Apr-19 18:00 1.028581636841 0.5843987 2035-Apr-19 21:00 1.028625618499 0.6340419 2035-Apr-20 00:00 1.028673183728 0.6836757 2035-Apr-20 03:00 1.028724331830 0.7332995 2035-Apr-20 06:00 1.028779062053 0.7829126 2035-Apr-20 09:00 1.028837373592 0.8325141 2035-Apr-20 12:00 1.028899265592 0.8821034 2035-Apr-20 15:00 1.028964737143 0.9316798 2035-Apr-20 18:00 1.029033787284 0.9812424 2035-Apr-20 21:00 1.029106415002 1.0307907 2035-Apr-21 00:00 1.029182619232 1.0803239 2035-Apr-21 03:00 1.029262398855 1.1298412 2035-Apr-21 06:00 1.029345752703 1.1793420 2035-Apr-21 09:00 1.029432679553 1.2288254 2035-Apr-21 12:00 1.029523178133 1.2782909 2035-Apr-21 15:00 1.029617247116 1.3277377 2035-Apr-21 18:00 1.029714885126 1.3771650 2035-Apr-21 21:00 1.029816090735 1.4265722 2035-Apr-22 00:00 1.029920862462 1.4759585 2035-Apr-22 03:00 1.030029198775 1.5253233 2035-Apr-22 06:00 1.030141098091 1.5746657 2035-Apr-22 09:00 1.030256558777 1.6239852 2035-Apr-22 12:00 1.030375579146 1.6732810 2035-Apr-22 15:00 1.030498157463 1.7225524 2035-Apr-22 18:00 1.030624291940 1.7717986 2035-Apr-22 21:00 1.030753980739 1.8210191 2035-Apr-23 00:00 1.030887221970 1.8702130 2035-Apr-23 03:00 1.031024013695 1.9193797 2035-Apr-23 06:00 1.031164353923 1.9685185 2035-Apr-23 09:00 1.031308240613 2.0176287 2035-Apr-23 12:00 1.031455671675 2.0667096 2035-Apr-23 15:00 1.031606644969 2.1157604 2035-Apr-23 18:00 1.031761158302 2.1647806 2035-Apr-23 21:00 1.031919209436 2.2137694 2035-Apr-24 00:00 1.032080796079 2.2627262 2035-Apr-24 03:00 1.032245915891 2.3116501 2035-Apr-24 06:00 1.032414566484 2.3605407 2035-Apr-24 09:00 1.032586745418 2.4093971 2035-Apr-24 12:00 1.032762450206 2.4582187 2035-Apr-24 15:00 1.032941678311 2.5070049 2035-Apr-24 18:00 1.033124427148 2.5557549 2035-Apr-24 21:00 1.033310694081 2.6044680 2035-Apr-25 00:00 1.033500476429 2.6531437 $$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 = '90000179' START_TIME = '2035-Apr-10' STOP_TIME = '2035-Apr-25' STEP_SIZE = '3 hours' QUANTITIES = '19'