******************************************************************************* JPL/HORIZONS 96P/Machholz 1 2024-May-10 17:03:21 Rec #:90000921 Soln.date: - # obs: 133 (1986-2002) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2446560.5 ! 1986-May-10.0000000 (TDB) RMSW= n.a. EC= .958012 QR= .126774 TP= 2446544.0164999999 OM= 94.50060000000001 W= 14.5337 IN= 59.9884 A= 3.019291226064588 MA= 3.096677644683576 ADIST= 5.911808452129176 PER= 5.2464520709509 N= .187865298 ANGMOM= .008570461999999999 DAN= .12879 DDN= 3.417 L= 101.888808 B= 12.5506832 TP= 1986-Apr-23.5164999999 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 comments 1: soln ref.= SAO/1986 2: k1=9., k2=5., phase coef.=0.03;non-gravs. considered; 2008 SAO Comet Catalog ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 10 17:03:21 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 96P/Machholz 1 {source: SAO/198620} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2028-Apr-20 00:00:00.0000 UT Stop time : A.D. 2028-May-05 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 3.2 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.240510.p240803 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-10. PREDICTS-> 2024-AUG-02 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= 2446560.5 ! 1986-May-10.0000000 (TDB) RMSW= n.a. EC= .958012 QR= .126774 TP= 2446544.0164999999 OM= 94.50060000000001 W= 14.5337 IN= 59.9884 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.458363646853406E-01 Y=-5.652537807390683E-01 Z= 1.001599761735924E-01 VX=-1.001890139664258E-04 VY=-2.894531363199380E-02 VZ=-7.959830169740056E-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 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2028-Apr-20 00:00 0.743659737055 -41.5685966 2028-Apr-20 03:00 0.740655545235 -41.6492181 2028-Apr-20 06:00 0.737645515120 -41.7303507 2028-Apr-20 09:00 0.734629609630 -41.8119998 2028-Apr-20 12:00 0.731607791289 -41.8941709 2028-Apr-20 15:00 0.728580022213 -41.9768697 2028-Apr-20 18:00 0.725546264114 -42.0601018 2028-Apr-20 21:00 0.722506478283 -42.1438732 2028-Apr-21 00:00 0.719460625595 -42.2281896 2028-Apr-21 03:00 0.716408666494 -42.3130571 2028-Apr-21 06:00 0.713350560993 -42.3984816 2028-Apr-21 09:00 0.710286268666 -42.4844693 2028-Apr-21 12:00 0.707215748641 -42.5710264 2028-Apr-21 15:00 0.704138959595 -42.6581592 2028-Apr-21 18:00 0.701055859746 -42.7458741 2028-Apr-21 21:00 0.697966406849 -42.8341775 2028-Apr-22 00:00 0.694870558188 -42.9230761 2028-Apr-22 03:00 0.691768270567 -43.0125765 2028-Apr-22 06:00 0.688659500310 -43.1026855 2028-Apr-22 09:00 0.685544203246 -43.1934099 2028-Apr-22 12:00 0.682422334708 -43.2847566 2028-Apr-22 15:00 0.679293849524 -43.3767327 2028-Apr-22 18:00 0.676158702010 -43.4693454 2028-Apr-22 21:00 0.673016845962 -43.5626018 2028-Apr-23 00:00 0.669868234652 -43.6565094 2028-Apr-23 03:00 0.666712820815 -43.7510755 2028-Apr-23 06:00 0.663550556648 -43.8463078 2028-Apr-23 09:00 0.660381393798 -43.9422138 2028-Apr-23 12:00 0.657205283355 -44.0388014 2028-Apr-23 15:00 0.654022175848 -44.1360783 2028-Apr-23 18:00 0.650832021232 -44.2340526 2028-Apr-23 21:00 0.647634768884 -44.3327323 2028-Apr-24 00:00 0.644430367595 -44.4321257 2028-Apr-24 03:00 0.641218765560 -44.5322410 2028-Apr-24 06:00 0.637999910370 -44.6330866 2028-Apr-24 09:00 0.634773749008 -44.7346710 2028-Apr-24 12:00 0.631540227837 -44.8370030 2028-Apr-24 15:00 0.628299292591 -44.9400911 2028-Apr-24 18:00 0.625050888372 -45.0439443 2028-Apr-24 21:00 0.621794959637 -45.1485715 2028-Apr-25 00:00 0.618531450193 -45.2539819 2028-Apr-25 03:00 0.615260303186 -45.3601846 2028-Apr-25 06:00 0.611981461096 -45.4671888 2028-Apr-25 09:00 0.608694865725 -45.5750042 2028-Apr-25 12:00 0.605400458193 -45.6836400 2028-Apr-25 15:00 0.602098178928 -45.7931061 2028-Apr-25 18:00 0.598787967655 -45.9034122 2028-Apr-25 21:00 0.595469763395 -46.0145681 2028-Apr-26 00:00 0.592143504450 -46.1265838 2028-Apr-26 03:00 0.588809128400 -46.2394694 2028-Apr-26 06:00 0.585466572093 -46.3532350 2028-Apr-26 09:00 0.582115771636 -46.4678910 2028-Apr-26 12:00 0.578756662394 -46.5834478 2028-Apr-26 15:00 0.575389178974 -46.6999157 2028-Apr-26 18:00 0.572013255226 -46.8173056 2028-Apr-26 21:00 0.568628824231 -46.9356278 2028-Apr-27 00:00 0.565235818297 -47.0548934 2028-Apr-27 03:00 0.561834168952 -47.1751130 2028-Apr-27 06:00 0.558423806938 -47.2962977 2028-Apr-27 09:00 0.555004662208 -47.4184583 2028-Apr-27 12:00 0.551576663918 -47.5416060 2028-Apr-27 15:00 0.548139740426 -47.6657518 2028-Apr-27 18:00 0.544693819282 -47.7909070 2028-Apr-27 21:00 0.541238827234 -47.9170827 2028-Apr-28 00:00 0.537774690218 -48.0442901 2028-Apr-28 03:00 0.534301333357 -48.1725405 2028-Apr-28 06:00 0.530818680965 -48.3018452 2028-Apr-28 09:00 0.527326656541 -48.4322153 2028-Apr-28 12:00 0.523825182776 -48.5636622 2028-Apr-28 15:00 0.520314181547 -48.6961970 2028-Apr-28 18:00 0.516793573928 -48.8298309 2028-Apr-28 21:00 0.513263280192 -48.9645749 2028-Apr-29 00:00 0.509723219815 -49.1004399 2028-Apr-29 03:00 0.506173311484 -49.2374369 2028-Apr-29 06:00 0.502613473111 -49.3755766 2028-Apr-29 09:00 0.499043621838 -49.5148694 2028-Apr-29 12:00 0.495463674053 -49.6553257 2028-Apr-29 15:00 0.491873545407 -49.7969557 2028-Apr-29 18:00 0.488273150830 -49.9397692 2028-Apr-29 21:00 0.484662404553 -50.0837757 2028-Apr-30 00:00 0.481041220129 -50.2289844 2028-Apr-30 03:00 0.477409510465 -50.3754040 2028-Apr-30 06:00 0.473767187847 -50.5230430 2028-Apr-30 09:00 0.470114163980 -50.6719091 2028-Apr-30 12:00 0.466450350020 -50.8220096 2028-Apr-30 15:00 0.462775656623 -50.9733511 2028-Apr-30 18:00 0.459089993990 -51.1259396 2028-Apr-30 21:00 0.455393271920 -51.2797802 2028-May-01 00:00 0.451685399874 -51.4348772 2028-May-01 03:00 0.447966287035 -51.5912340 2028-May-01 06:00 0.444235842386 -51.7488527 2028-May-01 09:00 0.440493974788 -51.9077344 2028-May-01 12:00 0.436740593073 -52.0678788 2028-May-01 15:00 0.432975606140 -52.2292844 2028-May-01 18:00 0.429198923065 -52.3919478 2028-May-01 21:00 0.425410453221 -52.5558641 2028-May-02 00:00 0.421610106411 -52.7210262 2028-May-02 03:00 0.417797793014 -52.8874251 2028-May-02 06:00 0.413973424146 -53.0550494 2028-May-02 09:00 0.410136911836 -53.2238852 2028-May-02 12:00 0.406288169219 -53.3939156 2028-May-02 15:00 0.402427110750 -53.5651209 2028-May-02 18:00 0.398553652442 -53.7374776 2028-May-02 21:00 0.394667712118 -53.9109588 2028-May-03 00:00 0.390769209701 -54.0855333 2028-May-03 03:00 0.386858067520 -54.2611655 2028-May-03 06:00 0.382934210654 -54.4378147 2028-May-03 09:00 0.378997567312 -54.6154347 2028-May-03 12:00 0.375048069241 -54.7939735 2028-May-03 15:00 0.371085652185 -54.9733724 2028-May-03 18:00 0.367110256383 -55.1535653 2028-May-03 21:00 0.363121827123 -55.3344782 2028-May-04 00:00 0.359120315342 -55.5160283 2028-May-04 03:00 0.355105678299 -55.6981232 2028-May-04 06:00 0.351077880306 -55.8806597 2028-May-04 09:00 0.347036893535 -56.0635228 2028-May-04 12:00 0.342982698915 -56.2465847 2028-May-04 15:00 0.338915287113 -56.4297032 2028-May-04 18:00 0.334834659616 -56.6127202 2028-May-04 21:00 0.330740829933 -56.7954603 2028-May-05 00:00 0.326633824917 -56.9777290 $$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 = '90000921' START_TIME = '2028-Apr-20' STOP_TIME = '2028-May-05' STEP_SIZE = '3 hours' QUANTITIES = '19'