******************************************************************************* JPL/HORIZONS 36P/Whipple 2025-Dec-12 17:47:08 Rec #:90000453 Soln.date: - # obs: 220 (1933-1996) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2443600.5 ! 1978-Apr-02.0000000 (TDB) RMSW= n.a. EC= .352245 QR= 2.468636 TP= 2443595.0488 OM= 189.046 W= 189.9687 IN= 10.2398 A= 3.811064368472648 MA= .7221489166881805 ADIST= 5.153492736945295 PER= 7.4400803930539 N= .13247522 ANGMOM= .031429514 DAN= 5.11153 DDN= 2.47838 L= 18.8590332 B= -1.7634706 TP= 1978-Mar-27.5488000000 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 2.28 M1= 10.5 M2= 14.5 k1= 13.25 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= SAO/1978 2: k1=13.25, k2=5., phase coef.=0.03;non-gravs. considered; 2008 SAO Comet Catalog ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 17:47:08 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: 36P/Whipple {source: SAO/197820} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2028-Nov-02 00:00:00.0000 UT Stop time : A.D. 2028-Nov-07 00:00:00.0000 UT Step-size : 120 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 2.28 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.251212.p260310 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-DEC-12. PREDICTS-> 2026-MAR-09 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= 2443600.5 ! 1978-Apr-02.0000000 (TDB) RMSW= n.a. EC= .352245 QR= 2.468636 TP= 2443595.0488 OM= 189.046 W= 189.9687 IN= 10.2398 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.311884186050976E+00 Y= 8.258084299111846E-01 Z= 2.620119697810324E-01 VX=-4.365778311341541E-03 VY= 1.166418155828232E-02 VZ= 2.637050562469777E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 2.28 M1= 10.5 M2= 14.5 k1= 13.25 k2= 5. PHCOF= .030 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2028-Nov-02 00:00 3.036653103577 -0.0443197 2028-Nov-02 02:00 3.036651000405 -0.0430807 2028-Nov-02 04:00 3.036648956864 -0.0418417 2028-Nov-02 06:00 3.036646972954 -0.0406026 2028-Nov-02 08:00 3.036645048676 -0.0393636 2028-Nov-02 10:00 3.036643184028 -0.0381246 2028-Nov-02 12:00 3.036641379013 -0.0368855 2028-Nov-02 14:00 3.036639633629 -0.0356465 2028-Nov-02 16:00 3.036637947878 -0.0344074 2028-Nov-02 18:00 3.036636321758 -0.0331684 2028-Nov-02 20:00 3.036634755272 -0.0319293 2028-Nov-02 22:00 3.036633248418 -0.0306903 2028-Nov-03 00:00 3.036631801197 -0.0294512 2028-Nov-03 02:00 3.036630413609 -0.0282121 2028-Nov-03 04:00 3.036629085655 -0.0269731 2028-Nov-03 06:00 3.036627817334 -0.0257340 2028-Nov-03 08:00 3.036626608646 -0.0244949 2028-Nov-03 10:00 3.036625459592 -0.0232558 2028-Nov-03 12:00 3.036624370173 -0.0220167 2028-Nov-03 14:00 3.036623340387 -0.0207776 2028-Nov-03 16:00 3.036622370235 -0.0195385 2028-Nov-03 18:00 3.036621459718 -0.0182994 2028-Nov-03 20:00 3.036620608835 -0.0170603 2028-Nov-03 22:00 3.036619817586 -0.0158212 2028-Nov-04 00:00 3.036619085973 -0.0145821 2028-Nov-04 02:00 3.036618413993 -0.0133430 2028-Nov-04 04:00 3.036617801649 -0.0121039 2028-Nov-04 06:00 3.036617248939 -0.0108648 2028-Nov-04 08:00 3.036616755864 -0.0096257 2028-Nov-04 10:00 3.036616322424 -0.0083866 2028-Nov-04 12:00 3.036615948619 -0.0071475 2028-Nov-04 14:00 3.036615634450 -0.0059084 2028-Nov-04 16:00 3.036615379915 -0.0046692 2028-Nov-04 18:00 3.036615185015 -0.0034301 2028-Nov-04 20:00 3.036615049750 -0.0021910 2028-Nov-04 22:00 3.036614974120 -0.0009519 2028-Nov-05 00:00 3.036614958126 0.0002872 2028-Nov-05 02:00 3.036615001766 0.0015263 2028-Nov-05 04:00 3.036615105041 0.0027654 2028-Nov-05 06:00 3.036615267952 0.0040046 2028-Nov-05 08:00 3.036615490497 0.0052437 2028-Nov-05 10:00 3.036615772678 0.0064828 2028-Nov-05 12:00 3.036616114493 0.0077219 2028-Nov-05 14:00 3.036616515943 0.0089610 2028-Nov-05 16:00 3.036616977028 0.0102001 2028-Nov-05 18:00 3.036617497747 0.0114392 2028-Nov-05 20:00 3.036618078102 0.0126784 2028-Nov-05 22:00 3.036618718090 0.0139175 2028-Nov-06 00:00 3.036619417713 0.0151566 2028-Nov-06 02:00 3.036620176971 0.0163957 2028-Nov-06 04:00 3.036620995862 0.0176348 2028-Nov-06 06:00 3.036621874388 0.0188739 2028-Nov-06 08:00 3.036622812548 0.0201130 2028-Nov-06 10:00 3.036623810341 0.0213521 2028-Nov-06 12:00 3.036624867768 0.0225911 2028-Nov-06 14:00 3.036625984829 0.0238302 2028-Nov-06 16:00 3.036627161523 0.0250693 2028-Nov-06 18:00 3.036628397850 0.0263084 2028-Nov-06 20:00 3.036629693810 0.0275475 2028-Nov-06 22:00 3.036631049403 0.0287866 2028-Nov-07 00:00 3.036632464629 0.0300256 $$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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF COMMAND = '90000453' QUANTITIES = '19' START_TIME = '2028-Nov-02' STEP_SIZE = '2 hours' STOP_TIME = '2028-Nov-07'