******************************************************************************* JPL/HORIZONS 96P/Machholz 1 2024-May-07 10:30:26 Rec #:90000927 (+COV) Soln.date: 2023-Jul-05_11:39:52 # obs: 667 (2012-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457952.5 ! 2017-Jul-18.0000000 (TDB) RMSW= n.a. EC= .9591604569014904 QR= .1239494080283305 TP= 2458054.4609305882 OM= 94.25475500848404 W= 14.79291874358058 IN= 58.1379341982923 A= 3.035034151321199 MA= 340.9939227088016 ADIST= 5.946118894614067 PER= 5.2875389026816 N= .186405491 ANGMOM= .008476931 DAN= .12599 DDN= 3.34343 L= 102.1907077 B= 12.5243233 MOID= .33308101 TP= 2017-Oct-27.9609305882 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3.2 M1= 13.6 M2= 16.9 k1= 9. k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 2.699154429138E-10 A2= -2.426658174954E-12 A3= 1.027365215123E-10 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K233/7, data arc: 2012-04-20 to 2023-06-22 2: k1=9., k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue May 7 10:30:26 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 96P/Machholz 1 {source: JPL#K233/7} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2235-Jan-01 00:00:00.0000 UT Stop time : A.D. 2500-Jan-01 00:00:00.0000 UT Step-size : 10 calendar years ******************************************************************************* Target pole/equ : undefined Target radii : 3.2 km 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.240506.p240730 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-06. PREDICTS-> 2024-JUL-29 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= 2457952.5 ! 2017-Jul-18.0000000 (TDB) RMSW= n.a. EC= .9591604569014904 QR= .1239494080283305 TP= 2458054.4609305882 OM= 94.25475500848404 W= 14.79291874358058 IN= 58.1379341982923 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 7.935795962993413E-01 Y=-1.032912854488775E+00 Z=-1.628089945915151E+00 VX=-3.450839588281754E-03 VY= 9.932728131878905E-03 VZ= 8.705069063639640E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 3.2 M1= 13.6 M2= 16.9 k1= 9. k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 2.699154429138E-10 A2= -2.426658174954E-12 A3= 1.027365215123E-10 Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot RNG_3sigma RNGRT_3sig ************************************************************************* $$SOE 2235-Jan-01 00:00 2.409350574293 20.6663077 1.092973E9 55.2030556 2245-Jan-01 00:00 1.786713506570 -25.8873502 4.214124E9 300.759561 2255-Jan-01 00:00 3.898213010160 -12.5095738 6.153089E9 182.224286 2265-Jan-01 00:00 5.058323129422 -7.4155093 1.28462E10 340.969850 2275-Jan-01 00:00 5.719020798317 -3.9198277 2.92225E10 905.803313 2285-Jan-01 00:00 5.984300148132 -1.0015080 6.62559E10 3132.18389 2295-Jan-01 00:00 5.952653118918 1.6795200 9.07946E10 13470.8440 2305-Jan-01 00:00 5.598062409646 4.6482296 6.36665E11 65503.6822 2315-Jan-01 00:00 4.878735617093 8.2229793 9.09268E12 410621.855 2325-Jan-01 00:00 3.687115960241 13.5351945 1.02764E14 3785635.77 2335-Jan-01 00:00 1.613543045118 27.9367822 1.39886E15 116107449. 2345-Jan-01 00:00 2.404242320632 -20.8101440 8.41723E15 407429231. 2355-Jan-01 00:00 4.079592291413 -11.7342177 3.79078E16 1.049735E9 2365-Jan-01 00:00 5.088446846843 -7.2884734 2.30335E17 5.683436E9 2375-Jan-01 00:00 5.707692938084 -3.9610301 1.57002E18 4.17366E10 2385-Jan-01 00:00 5.961280175760 -1.3486492 1.33995E19 4.29709E11 2395-Jan-01 00:00 5.981652348837 1.2159753 8.47145E19 4.63485E12 2405-Jan-01 00:00 5.719158231060 3.8727584 2.39333E20 5.12217E13 2415-Jan-01 00:00 5.155480465228 6.9744942 7.19132E21 6.90089E14 2425-Jan-01 00:00 4.185197045079 11.2558314 2.59369E23 1.21553E16 2435-Jan-01 00:00 2.748833533325 18.5508856 8.04712E24 3.84550E17 2445-Jan-01 00:00 1.105323903147 -35.5594281 2.41611E26 3.28921E19 2455-Jan-01 00:00 3.398588226351 -14.9561447 1.40651E27 4.55554E19 2465-Jan-01 00:00 4.654678493574 -9.2267664 1.24056E28 3.08632E20 2475-Jan-01 00:00 5.418550300794 -5.6164166 1.19474E29 2.90911E21 2485-Jan-01 00:00 5.863805205220 -2.7649766 1.20369E30 3.32113E22 2495-Jan-01 00:00 6.014697534139 -0.0304885 8.03699E30 3.33639E23 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. '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 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, 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 = 'DES=96P;CAP' START_TIME = '2235-01-01' STOP_TIME = '2500-01-01' STEP_SIZE = '10 years' QUANTITIES = '19,39' CENTER = '@Sun'