******************************************************************************* JPL/HORIZONS ISON (C/2012 S1) 2024-Apr-27 02:27:45 Rec #:90004151 (+COV) Soln.date: 2021-Apr-15_23:32:22 # obs: 6682 (2011-2013) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456413.5 ! 2013-May-01.0000000 (TDB) RMSW= n.a. EC= 1.000005095690719 QR= .0124667131396643 TP= 2456625.2645302862 OM= 295.6865418045648 W= 345.5411989420559 IN= 62.16289397901024 A= -2446.520761814393 MA= -.001724780901917927ADIST= 9.999999E99 PER= 9.999999E99 N= 8.145000000000001E-6 ANGMOM= .00271627 DAN= .01267 DDN= .78735 L= 288.8208515 B= -12.7554416 MOID= .0229939 TP= 2013-Nov-28.7645302862 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 10.2 M2= n.a. k1= 4.75 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= 8.538925170898E-8 A2= 5.750839114189E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#56, data arc: 2011-09-30 to 2013-11-22 2: k1=4.75; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Apr 27 02:27:45 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: ISON (C/2012 S1) {source: JPL#56} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 1801-Nov-01 00:00:00.0000 UT Stop time : A.D. 1801-Dec-31 00:00:00.0000 UT Step-size : 60 steps ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 0.0, 0.0, -695700.0 {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_SUN {East-longitude positive} Center radii : 695700.0, 695700.0, 695700.0 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : None 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.240426.p240720 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-26. PREDICTS-> 2024-JUL-19 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= 2456413.5 ! 2013-May-01.0000000 (TDB) RMSW= n.a. EC= 1.000005095690719 QR= .0124667131396643 TP= 2456625.2645302862 OM= 295.6865418045648 W= 345.5411989420559 IN= 62.16289397901024 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.445349759502127E+00 Y= 3.101113594083580E+00 Z= 1.865345632469247E+00 VX= 4.232982012846101E-03 VY=-9.600824666202080E-03 VZ=-6.472976026312528E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 10.2 M2= n.a. k1= 4.75 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= 8.538925170898E-8 A2= 5.750839114189E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ********************************************************************************** Date__(UT)__HR:MN:SC.fff r rdot VmagSn VmagOb ********************************************************************************** $$SOE 1801-Nov-01 00:00:00.000 200.0255213383 -2.9900167 2.9901280 2.9901670 1801-Nov-02 00:00:00.000 200.0237944323 -2.9900485 2.9901597 2.9901987 1801-Nov-03 00:00:00.000 200.0220675091 -2.9900782 2.9901894 2.9902284 1801-Nov-04 00:00:00.000 200.0203405686 -2.9901080 2.9902191 2.9902580 1801-Nov-05 00:00:00.000 200.0186136110 -2.9901377 2.9902488 2.9902876 1801-Nov-06 00:00:00.000 200.0168866363 -2.9901674 2.9902784 2.9903172 1801-Nov-07 00:00:00.000 200.0151596444 -2.9901971 2.9903080 2.9903468 1801-Nov-08 00:00:00.000 200.0134326354 -2.9902267 2.9903376 2.9903763 1801-Nov-09 00:00:00.000 200.0117056092 -2.9902563 2.9903672 2.9904058 1801-Nov-10 00:00:00.000 200.0099785660 -2.9902859 2.9903968 2.9904353 1801-Nov-11 00:00:00.000 200.0082515056 -2.9903155 2.9904263 2.9904648 1801-Nov-12 00:00:00.000 200.0065244282 -2.9903451 2.9904558 2.9904943 1801-Nov-13 00:00:00.000 200.0047973336 -2.9903747 2.9904853 2.9905238 1801-Nov-14 00:00:00.000 200.0030702220 -2.9904043 2.9905148 2.9905532 1801-Nov-15 00:00:00.000 200.0013430934 -2.9904338 2.9905442 2.9905827 1801-Nov-16 00:00:00.000 199.9996159476 -2.9904634 2.9905737 2.9906122 1801-Nov-17 00:00:00.000 199.9978887847 -2.9904930 2.9906032 2.9906416 1801-Nov-18 00:00:00.000 199.9961616048 -2.9905226 2.9906326 2.9906711 1801-Nov-19 00:00:00.000 199.9944344077 -2.9905523 2.9906621 2.9907007 1801-Nov-20 00:00:00.000 199.9927071935 -2.9905819 2.9906916 2.9907302 1801-Nov-21 00:00:00.000 199.9909799622 -2.9906116 2.9907211 2.9907598 1801-Nov-22 00:00:00.000 199.9892527137 -2.9906414 2.9907507 2.9907894 1801-Nov-23 00:00:00.000 199.9875254481 -2.9906711 2.9907803 2.9908191 1801-Nov-24 00:00:00.000 199.9857981652 -2.9907009 2.9908099 2.9908487 1801-Nov-25 00:00:00.000 199.9840708652 -2.9907307 2.9908395 2.9908784 1801-Nov-26 00:00:00.000 199.9823435479 -2.9907605 2.9908692 2.9909081 1801-Nov-27 00:00:00.000 199.9806162134 -2.9907903 2.9908989 2.9909378 1801-Nov-28 00:00:00.000 199.9788888616 -2.9908202 2.9909286 2.9909675 1801-Nov-29 00:00:00.000 199.9771614927 -2.9908499 2.9909583 2.9909972 1801-Nov-30 00:00:00.000 199.9754341066 -2.9908797 2.9909880 2.9910269 1801-Dec-01 00:00:00.000 199.9737067032 -2.9909094 2.9910177 2.9910564 1801-Dec-02 00:00:00.000 199.9719792828 -2.9909390 2.9910473 2.9910860 1801-Dec-03 00:00:00.000 199.9702518453 -2.9909686 2.9910769 2.9911154 1801-Dec-04 00:00:00.000 199.9685243907 -2.9909981 2.9911065 2.9911447 1801-Dec-05 00:00:00.000 199.9667969191 -2.9910274 2.9911359 2.9911740 1801-Dec-06 00:00:00.000 199.9650694306 -2.9910567 2.9911653 2.9912031 1801-Dec-07 00:00:00.000 199.9633419252 -2.9910858 2.9911946 2.9912321 1801-Dec-08 00:00:00.000 199.9616144031 -2.9911149 2.9912237 2.9912610 1801-Dec-09 00:00:00.000 199.9598868642 -2.9911438 2.9912528 2.9912898 1801-Dec-10 00:00:00.000 199.9581593086 -2.9911725 2.9912817 2.9913185 1801-Dec-11 00:00:00.000 199.9564317365 -2.9912012 2.9913105 2.9913470 1801-Dec-12 00:00:00.000 199.9547041478 -2.9912297 2.9913392 2.9913754 1801-Dec-13 00:00:00.000 199.9529765428 -2.9912581 2.9913678 2.9914037 1801-Dec-14 00:00:00.000 199.9512489213 -2.9912864 2.9913962 2.9914318 1801-Dec-15 00:00:00.000 199.9495212835 -2.9913146 2.9914246 2.9914599 1801-Dec-16 00:00:00.000 199.9477936295 -2.9913426 2.9914528 2.9914878 1801-Dec-17 00:00:00.000 199.9460659594 -2.9913706 2.9914808 2.9915156 1801-Dec-18 00:00:00.000 199.9443382731 -2.9913984 2.9915088 2.9915433 1801-Dec-19 00:00:00.000 199.9426105708 -2.9914261 2.9915367 2.9915709 1801-Dec-20 00:00:00.000 199.9408828525 -2.9914537 2.9915644 2.9915984 1801-Dec-21 00:00:00.000 199.9391551183 -2.9914813 2.9915920 2.9916258 1801-Dec-22 00:00:00.000 199.9374273682 -2.9915087 2.9916196 2.9916531 1801-Dec-23 00:00:00.000 199.9356996023 -2.9915360 2.9916470 2.9916803 1801-Dec-24 00:00:00.000 199.9339718207 -2.9915632 2.9916743 2.9917074 1801-Dec-25 00:00:00.000 199.9322440233 -2.9915903 2.9917015 2.9917344 1801-Dec-26 00:00:00.000 199.9305162104 -2.9916174 2.9917287 2.9917613 1801-Dec-27 00:00:00.000 199.9287883818 -2.9916443 2.9917557 2.9917881 1801-Dec-28 00:00:00.000 199.9270605377 -2.9916712 2.9917826 2.9918149 1801-Dec-29 00:00:00.000 199.9253326781 -2.9916980 2.9918095 2.9918415 1801-Dec-30 00:00:00.000 199.9236048030 -2.9917247 2.9918363 2.9918681 1801-Dec-31 00:00:00.000 199.9218769126 -2.9917513 2.9918629 2.9918946 $$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 'VmagSn VmagOb' = Magnitude of target centers' velocity with respect to the Sun ("VmagSn") and the observer ("VmagOb") at the time light left the target center to be observed (print time minus down-leg light-time). These are absolute values of the velocity vectors (total speeds) and do NOT indicate direction of motion. Units: 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 = '2012 S1' START_TIME = '1801-11-01' STOP_TIME = '1801-12-31' STEP_SIZE = '60' QUANTITIES = '19,22' CENTER = '@Sun'