******************************************************************************* JPL/HORIZONS 80P/Peters-Hartley 2024-May-09 17:50:49 Rec #:90000851 Soln.date: - # obs: 36 (1982-1998) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2445080.5 ! 1982-Apr-21.0000000 (TDB) RMSW= n.a. EC= .598378 QR= 1.622593 TP= 2445098.0707 OM= 260.0599 W= 338.187 IN= 29.8544 A= 4.040099894926074 MA= 357.8674217168987 ADIST= 6.457606789852148 PER= 8.1207540536631 N= .121371276 ANGMOM= .027702948 DAN= 1.66728 DDN= 5.83514 L= 240.9169477 B= -10.6594357 TP= 1982-May-08.5707000000 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 11.8 M2= n.a. k1= 15.75 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= SAO/1982 2: k1=15.75;non-gravs. considered; 2008 SAO Comet Catalog ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 9 17:50:49 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 80P/Peters-Hartley {source: SAO/198220} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2026-Nov-12 00:00:00.0000 UT Stop time : A.D. 2026-Nov-17 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined 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.240509.p240802 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-09. PREDICTS-> 2024-AUG-01 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= 2445080.5 ! 1982-Apr-21.0000000 (TDB) RMSW= n.a. EC= .598378 QR= 1.622593 TP= 2445098.0707 OM= 260.0599 W= 338.187 IN= 29.8544 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-9.847565794501253E-01 Y=-9.533770558979671E-01 Z=-8.875614969769740E-01 VX= 1.138020080191350E-02 VY=-1.232917553513023E-02 VZ= 2.769679391551762E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 11.8 M2= n.a. k1= 15.75 k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2026-Nov-12 00:00 6.421331922202 0.2794674 2026-Nov-12 03:00 6.421352064743 0.2785368 2026-Nov-12 06:00 6.421372140092 0.2776061 2026-Nov-12 09:00 6.421392148248 0.2766755 2026-Nov-12 12:00 6.421412089213 0.2757448 2026-Nov-12 15:00 6.421431962987 0.2748142 2026-Nov-12 18:00 6.421451769570 0.2738836 2026-Nov-12 21:00 6.421471508963 0.2729530 2026-Nov-13 00:00 6.421491181165 0.2720224 2026-Nov-13 03:00 6.421510786178 0.2710918 2026-Nov-13 06:00 6.421530324002 0.2701612 2026-Nov-13 09:00 6.421549794637 0.2692306 2026-Nov-13 12:00 6.421569198083 0.2683000 2026-Nov-13 15:00 6.421588534341 0.2673694 2026-Nov-13 18:00 6.421607803412 0.2664388 2026-Nov-13 21:00 6.421627005295 0.2655082 2026-Nov-14 00:00 6.421646139991 0.2645777 2026-Nov-14 03:00 6.421665207500 0.2636471 2026-Nov-14 06:00 6.421684207824 0.2627165 2026-Nov-14 09:00 6.421703140961 0.2617860 2026-Nov-14 12:00 6.421722006913 0.2608554 2026-Nov-14 15:00 6.421740805680 0.2599249 2026-Nov-14 18:00 6.421759537263 0.2589943 2026-Nov-14 21:00 6.421778201661 0.2580638 2026-Nov-15 00:00 6.421796798875 0.2571333 2026-Nov-15 03:00 6.421815328906 0.2562027 2026-Nov-15 06:00 6.421833791753 0.2552722 2026-Nov-15 09:00 6.421852187418 0.2543417 2026-Nov-15 12:00 6.421870515901 0.2534112 2026-Nov-15 15:00 6.421888777201 0.2524807 2026-Nov-15 18:00 6.421906971320 0.2515502 2026-Nov-15 21:00 6.421925098258 0.2506197 2026-Nov-16 00:00 6.421943158015 0.2496892 2026-Nov-16 03:00 6.421961150592 0.2487587 2026-Nov-16 06:00 6.421979075989 0.2478282 2026-Nov-16 09:00 6.421996934206 0.2468977 2026-Nov-16 12:00 6.422014725244 0.2459672 2026-Nov-16 15:00 6.422032449103 0.2450368 2026-Nov-16 18:00 6.422050105783 0.2441063 2026-Nov-16 21:00 6.422067695286 0.2431759 2026-Nov-17 00:00 6.422085217611 0.2422454 $$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 = '90000851' START_TIME = '2026-Nov-12' STOP_TIME = '2026-Nov-17' STEP_SIZE = '3 hours' QUANTITIES = '19'