******************************************************************************* JPL/HORIZONS Catalina (C/1999 F1) 2025-Dec-12 17:44:00 Rec #:90002490 (+COV) Soln.date: 2021-Apr-15_23:29:57 # obs: 166 (1999-2005) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2452054.5 ! 2001-May-25.0000000 (TDB) RMSW= n.a. EC= .9991295234393676 QR= 5.787018611359847 TP= 2452319.1440778025 OM= 20.02313274635543 W= 255.157503764398 IN= 92.03538807790534 A= 6648.103892832371 MA= 359.9995188067162 ADIST= 13290.42076705338 PER= 542069.40870041 N= 1.818E-6 ANGMOM= .058509899 DAN= 15.54847 DDN= 9.21143 L= 192.3896717 B= -75.02170219999999 MOID= 5.45342016 TP= 2002-Feb-13.6440778025 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 5.9 M2= 9. k1= 7.5 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#45, data arc: 1999-03-13 to 2005-08-28 2: k1=7.5, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 17:44:00 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: Catalina (C/1999 F1) {source: JPL#45} Center body name: Uranus (799) {source: ura184_merged} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2011-Oct-01 00:00:00.0000 UT Stop time : A.D. 2011-Oct-31 00:00:00.0000 UT Step-size : 1440 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 0.0, 0.0, -25559.0 {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 : IAU_URANUS {East-longitude positive} Center radii : 25559.0, 25559.0, 24973.0 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : ARIEL (R_eq= 581.100) km {source: ura184_merged} 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 n.a. , 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= 2452054.5 ! 2001-May-25.0000000 (TDB) RMSW= n.a. EC= .9991295234393676 QR= 5.787018611359847 TP= 2452319.1440778025 OM= 20.02313274635543 W= 255.157503764398 IN= 92.03538807790534 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-3.766090267702720E+00 Y= 7.423706275838444E-01 Z=-4.722535467430159E+00 VX= 8.149498648801773E-03 VY= 4.702477656638935E-03 VZ=-2.945289653202130E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 5.9 M2= 9. k1= 7.5 k2= 5. PHCOF= .030 ******************************************************************************* Date__(UT)__HR:MN delta deldot *************************************************** $$SOE 2011-Oct-01 00:00 7.69899916571400 -0.1319940 2011-Oct-02 00:00 7.69892505504029 -0.1246922 2011-Oct-03 00:00 7.69885515849753 -0.1172890 2011-Oct-04 00:00 7.69878959620468 -0.1098003 2011-Oct-05 00:00 7.69872828171350 -0.1025388 2011-Oct-06 00:00 7.69867117451233 -0.0952232 2011-Oct-07 00:00 7.69861823912954 -0.0881188 2011-Oct-08 00:00 7.69856943506496 -0.0808227 2011-Oct-09 00:00 7.69852491167882 -0.0734019 2011-Oct-10 00:00 7.69848459362292 -0.0662056 2011-Oct-11 00:00 7.69844849391407 -0.0587812 2011-Oct-12 00:00 7.69841668087387 -0.0514188 2011-Oct-13 00:00 7.69838911268136 -0.0440032 2011-Oct-14 00:00 7.69836584553159 -0.0366339 2011-Oct-15 00:00 7.69834674373324 -0.0295068 2011-Oct-16 00:00 7.69833183364369 -0.0220781 2011-Oct-17 00:00 7.69832121656027 -0.0147294 2011-Oct-18 00:00 7.69831482010686 -0.0073886 2011-Oct-19 00:00 7.69831270373045 0.0000285 2011-Oct-20 00:00 7.69831481567301 0.0073103 2011-Oct-21 00:00 7.69832120306690 0.0148257 2011-Oct-22 00:00 7.69833188783790 0.0220933 2011-Oct-23 00:00 7.69834669814677 0.0292425 2011-Oct-24 00:00 7.69836570027792 0.0365512 2011-Oct-25 00:00 7.69838889316070 0.0437700 2011-Oct-26 00:00 7.69841631206982 0.0512095 2011-Oct-27 00:00 7.69844800658699 0.0585067 2011-Oct-28 00:00 7.69848390539996 0.0658760 2011-Oct-29 00:00 7.69852415781473 0.0734935 2011-Oct-30 00:00 7.69856873005410 0.0808332 2011-Oct-31 00:00 7.69861753771142 0.0882017 $$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. 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. 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 CENTER = '@799' COMMAND = '1999 F1' MAKE_EPHEM = 'YES' QUANTITIES = '20' START_TIME = '2011-10-01' STEP_SIZE = '1 day' STOP_TIME = '2011-10-31' TABLE_TYPE = 'OBSERVER'