API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 45P/Honda-Mrkos-Pajdusakova 2024-May-03 07:02:30 Rec #:90000535 (+COV) Soln.date: 2022-Jul-19_02:06:34 # obs: 1823 (2016-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457979.5 ! 2017-Aug-14.0000000 (TDB) RMSW= n.a. EC= .8239960779465374 QR= .532650151526285 TP= 2457753.7841481166 OM= 88.93460245064746 W= 326.3441984051743 IN= 4.248170541497252 A= 3.026353875026082 MA= 42.25582356031209 ADIST= 5.520057598525879 PER= 5.2648713820948 N= .187208046 ANGMOM= .016955649 DAN= .57629 DDN= 3.09293 L= 55.35148 B= -2.3528514 MOID= .0603555 TP= 2016-Dec-31.2841481166 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= .800 M1= 13.7 M2= 18. k1= 22. 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= -25.83941 A1= 5.430524945259E-9 A2= 1.803847961128E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K222/7, data arc: 2016-11-05 to 2022-07-04 2: k1=22., k2=5., phase coef.=0.03; radar( 8 delay, 4 Dop.); ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Fri May 3 07:02:30 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 45P/Honda-Mrkos-Pajdusakova {source: JPL#K222/7} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2027-Aug-30 00:00:00.0000 UT Stop time : A.D. 2027-Sep-01 00:00:00.0000 UT Step-size : 20 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 0.8 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.240502.p240726 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-02. PREDICTS-> 2024-JUL-25 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= 2457979.5 ! 2017-Aug-14.0000000 (TDB) RMSW= n.a. EC= .8239960779465374 QR= .532650151526285 TP= 2457753.7841481166 OM= 88.93460245064746 W= 326.3441984051743 IN= 4.248170541497252 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.805934480656318E+00 Y=-1.045629322500222E+00 Z=-2.277829469244435E-01 VX=-5.703634973900090E-03 VY=-7.651055867820054E-03 VZ=-2.867728072469801E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= .800 M1= 13.7 M2= 18. k1= 22. 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= -25.83941 A1= 5.430524945259E-9 A2= 1.803847961128E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2027-Aug-30 00:00 0.558939986969 -1.3387571 2027-Aug-30 00:20 0.558929323888 -1.3201733 2027-Aug-30 00:40 0.558918809865 -1.3015880 2027-Aug-30 01:00 0.558908444913 -1.2830013 2027-Aug-30 01:20 0.558898229044 -1.2644131 2027-Aug-30 01:40 0.558888162268 -1.2458235 2027-Aug-30 02:00 0.558878244597 -1.2272325 2027-Aug-30 02:20 0.558868476042 -1.2086401 2027-Aug-30 02:40 0.558858856615 -1.1900463 2027-Aug-30 03:00 0.558849386326 -1.1714512 2027-Aug-30 03:20 0.558840065186 -1.1528548 2027-Aug-30 03:40 0.558830893204 -1.1342571 2027-Aug-30 04:00 0.558821870393 -1.1156581 2027-Aug-30 04:20 0.558812996761 -1.0970578 2027-Aug-30 04:40 0.558804272320 -1.0784563 2027-Aug-30 05:00 0.558795697078 -1.0598536 2027-Aug-30 05:20 0.558787271045 -1.0412497 2027-Aug-30 05:40 0.558778994231 -1.0226446 2027-Aug-30 06:00 0.558770866645 -1.0040384 2027-Aug-30 06:20 0.558762888297 -0.9854310 2027-Aug-30 06:40 0.558755059195 -0.9668226 2027-Aug-30 07:00 0.558747379348 -0.9482130 2027-Aug-30 07:20 0.558739848764 -0.9296024 2027-Aug-30 07:40 0.558732467454 -0.9109907 2027-Aug-30 08:00 0.558725235423 -0.8923780 2027-Aug-30 08:20 0.558718152682 -0.8737642 2027-Aug-30 08:40 0.558711219238 -0.8551495 2027-Aug-30 09:00 0.558704435098 -0.8365339 2027-Aug-30 09:20 0.558697800270 -0.8179172 2027-Aug-30 09:40 0.558691314762 -0.7992997 2027-Aug-30 10:00 0.558684978581 -0.7806813 2027-Aug-30 10:20 0.558678791735 -0.7620619 2027-Aug-30 10:40 0.558672754230 -0.7434417 2027-Aug-30 11:00 0.558666866072 -0.7248207 2027-Aug-30 11:20 0.558661127270 -0.7061989 2027-Aug-30 11:40 0.558655537828 -0.6875762 2027-Aug-30 12:00 0.558650097754 -0.6689528 2027-Aug-30 12:20 0.558644807054 -0.6503287 2027-Aug-30 12:40 0.558639665733 -0.6317038 2027-Aug-30 13:00 0.558634673798 -0.6130781 2027-Aug-30 13:20 0.558629831253 -0.5944518 2027-Aug-30 13:40 0.558625138105 -0.5758248 2027-Aug-30 14:00 0.558620594359 -0.5571972 2027-Aug-30 14:20 0.558616200020 -0.5385689 2027-Aug-30 14:40 0.558611955093 -0.5199401 2027-Aug-30 15:00 0.558607859582 -0.5013106 2027-Aug-30 15:20 0.558603913493 -0.4826806 2027-Aug-30 15:40 0.558600116829 -0.4640500 2027-Aug-30 16:00 0.558596469596 -0.4454189 2027-Aug-30 16:20 0.558592971796 -0.4267873 2027-Aug-30 16:40 0.558589623435 -0.4081553 2027-Aug-30 17:00 0.558586424516 -0.3895227 2027-Aug-30 17:20 0.558583375042 -0.3708898 2027-Aug-30 17:40 0.558580475017 -0.3522564 2027-Aug-30 18:00 0.558577724444 -0.3336226 2027-Aug-30 18:20 0.558575123327 -0.3149884 2027-Aug-30 18:40 0.558572671668 -0.2963539 2027-Aug-30 19:00 0.558570369470 -0.2777190 2027-Aug-30 19:20 0.558568216735 -0.2590838 2027-Aug-30 19:40 0.558566213467 -0.2404484 2027-Aug-30 20:00 0.558564359666 -0.2218126 2027-Aug-30 20:20 0.558562655337 -0.2031766 2027-Aug-30 20:40 0.558561100479 -0.1845404 2027-Aug-30 21:00 0.558559695096 -0.1659040 2027-Aug-30 21:20 0.558558439189 -0.1472674 2027-Aug-30 21:40 0.558557332758 -0.1286306 2027-Aug-30 22:00 0.558556375806 -0.1099937 2027-Aug-30 22:20 0.558555568333 -0.0913566 2027-Aug-30 22:40 0.558554910341 -0.0727195 2027-Aug-30 23:00 0.558554401829 -0.0540822 2027-Aug-30 23:20 0.558554042800 -0.0354449 2027-Aug-30 23:40 0.558553833252 -0.0168076 2027-Aug-31 00:00 0.558553773187 0.0018298 2027-Aug-31 00:20 0.558553862603 0.0204671 2027-Aug-31 00:40 0.558554101503 0.0391044 2027-Aug-31 01:00 0.558554489884 0.0577417 2027-Aug-31 01:20 0.558555027747 0.0763790 2027-Aug-31 01:40 0.558555715090 0.0950161 2027-Aug-31 02:00 0.558556551914 0.1136531 2027-Aug-31 02:20 0.558557538217 0.1322900 2027-Aug-31 02:40 0.558558673998 0.1509268 2027-Aug-31 03:00 0.558559959256 0.1695633 2027-Aug-31 03:20 0.558561393989 0.1881997 2027-Aug-31 03:40 0.558562978196 0.2068359 2027-Aug-31 04:00 0.558564711874 0.2254718 2027-Aug-31 04:20 0.558566595023 0.2441075 2027-Aug-31 04:40 0.558568627640 0.2627429 2027-Aug-31 05:00 0.558570809722 0.2813780 2027-Aug-31 05:20 0.558573141267 0.3000128 2027-Aug-31 05:40 0.558575622272 0.3186473 2027-Aug-31 06:00 0.558578252736 0.3372813 2027-Aug-31 06:20 0.558581032653 0.3559151 2027-Aug-31 06:40 0.558583962023 0.3745484 2027-Aug-31 07:00 0.558587040840 0.3931812 2027-Aug-31 07:20 0.558590269102 0.4118137 2027-Aug-31 07:40 0.558593646806 0.4304457 2027-Aug-31 08:00 0.558597173946 0.4490771 2027-Aug-31 08:20 0.558600850520 0.4677081 2027-Aug-31 08:40 0.558604676522 0.4863386 2027-Aug-31 09:00 0.558608651950 0.5049685 2027-Aug-31 09:20 0.558612776798 0.5235978 2027-Aug-31 09:40 0.558617051061 0.5422265 2027-Aug-31 10:00 0.558621474735 0.5608547 2027-Aug-31 10:20 0.558626047815 0.5794822 2027-Aug-31 10:40 0.558630770296 0.5981090 2027-Aug-31 11:00 0.558635642172 0.6167352 2027-Aug-31 11:20 0.558640663437 0.6353606 2027-Aug-31 11:40 0.558645834087 0.6539854 2027-Aug-31 12:00 0.558651154115 0.6726094 2027-Aug-31 12:20 0.558656623515 0.6912326 2027-Aug-31 12:40 0.558662242281 0.7098551 2027-Aug-31 13:00 0.558668010407 0.7284768 2027-Aug-31 13:20 0.558673927887 0.7470976 2027-Aug-31 13:40 0.558679994712 0.7657176 2027-Aug-31 14:00 0.558686210878 0.7843367 2027-Aug-31 14:20 0.558692576376 0.8029550 2027-Aug-31 14:40 0.558699091199 0.8215723 2027-Aug-31 15:00 0.558705755340 0.8401887 2027-Aug-31 15:20 0.558712568793 0.8588042 2027-Aug-31 15:40 0.558719531548 0.8774187 2027-Aug-31 16:00 0.558726643598 0.8960322 2027-Aug-31 16:20 0.558733904934 0.9146447 2027-Aug-31 16:40 0.558741315550 0.9332561 2027-Aug-31 17:00 0.558748875436 0.9518665 2027-Aug-31 17:20 0.558756584584 0.9704759 2027-Aug-31 17:40 0.558764442986 0.9890841 2027-Aug-31 18:00 0.558772450631 1.0076912 2027-Aug-31 18:20 0.558780607512 1.0262972 2027-Aug-31 18:40 0.558788913619 1.0449020 2027-Aug-31 19:00 0.558797368943 1.0635057 2027-Aug-31 19:20 0.558805973474 1.0821081 2027-Aug-31 19:40 0.558814727202 1.1007093 2027-Aug-31 20:00 0.558823630118 1.1193093 2027-Aug-31 20:20 0.558832682211 1.1379080 2027-Aug-31 20:40 0.558841883472 1.1565055 2027-Aug-31 21:00 0.558851233889 1.1751016 2027-Aug-31 21:20 0.558860733453 1.1936964 2027-Aug-31 21:40 0.558870382153 1.2122899 2027-Aug-31 22:00 0.558880179978 1.2308820 2027-Aug-31 22:20 0.558890126916 1.2494727 2027-Aug-31 22:40 0.558900222957 1.2680620 2027-Aug-31 23:00 0.558910468089 1.2866498 2027-Aug-31 23:20 0.558920862301 1.3052363 2027-Aug-31 23:40 0.558931405580 1.3238212 2027-Sep-01 00:00 0.558942097916 1.3424047 $$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 *******************************************************************************