API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 153P/Ikeya-Zhang 2024-Apr-28 10:23:52 Rec #:90001087 (+COV) Soln.date: 2020-Jun-17_10:40:41 # obs: 1893 (2001-2002) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2452402.5 ! 2002-May-08.0000000 (TDB) RMSW= n.a. EC= .9900806570176692 QR= .5070700896059622 TP= 2452352.4801594438 OM= 93.36945661875394 W= 34.66817865742473 IN= 28.1209574068563 A= 51.11932216772838 MA= .1348865811518696 ADIST= 101.7315742458508 PER= 365.49869617243 N= .002696662 ANGMOM= .01728028 DAN= .5562 DDN= 5.43414 L= 124.7513892 B= 15.5515837 MOID= .33190501 TP= 2002-Mar-18.9801594438 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 4. M2= n.a. k1= 15. 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= 7.054283022881E-9 A2= 1.667416989803E-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#74, data arc: 2001-08-25 to 2002-10-02 2: k1=15.0; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sun Apr 28 10:23:52 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 153P/Ikeya-Zhang {source: JPL#74} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2363-Mar-01 00:00:00.0000 UT Stop time : A.D. 2363-Mar-30 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined 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.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 (>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= 2452402.5 ! 2002-May-08.0000000 (TDB) RMSW= n.a. EC= .9900806570176692 QR= .5070700896059622 TP= 2452352.4801594438 OM= 93.36945661875394 W= 34.66817865742473 IN= 28.1209574068563 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-7.117084624932214E-01 Y=-9.486537620383608E-01 Z= 3.191453963954775E-02 VX=-6.291670504008431E-04 VY=-2.075300907536026E-02 VZ=-7.872619106854353E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 4. M2= n.a. k1= 15. 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= 7.054283022881E-9 A2= 1.667416989803E-9 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 2363-Mar-01 00:00 0.601844948663 -21.5720127 2363-Mar-01 03:00 0.600291733456 -21.4524261 2363-Mar-01 06:00 0.598747202445 -21.3314498 2363-Mar-01 09:00 0.597211456292 -21.2090750 2363-Mar-01 12:00 0.595684596293 -21.0852929 2363-Mar-01 15:00 0.594166724367 -20.9600951 2363-Mar-01 18:00 0.592657943043 -20.8334731 2363-Mar-01 21:00 0.591158355454 -20.7054187 2363-Mar-02 00:00 0.589668065315 -20.5759238 2363-Mar-02 03:00 0.588187176920 -20.4449807 2363-Mar-02 06:00 0.586715795121 -20.3125815 2363-Mar-02 09:00 0.585254025317 -20.1787190 2363-Mar-02 12:00 0.583801973441 -20.0433857 2363-Mar-02 15:00 0.582359745940 -19.9065746 2363-Mar-02 18:00 0.580927449762 -19.7682790 2363-Mar-02 21:00 0.579505192338 -19.6284923 2363-Mar-03 00:00 0.578093081568 -19.4872081 2363-Mar-03 03:00 0.576691225795 -19.3444203 2363-Mar-03 06:00 0.575299733798 -19.2001232 2363-Mar-03 09:00 0.573918714760 -19.0543111 2363-Mar-03 12:00 0.572548278257 -18.9069789 2363-Mar-03 15:00 0.571188534236 -18.7581215 2363-Mar-03 18:00 0.569839592989 -18.6077343 2363-Mar-03 21:00 0.568501565135 -18.4558130 2363-Mar-04 00:00 0.567174561597 -18.3023534 2363-Mar-04 03:00 0.565858693576 -18.1473520 2363-Mar-04 06:00 0.564554072528 -17.9908052 2363-Mar-04 09:00 0.563260810143 -17.8327102 2363-Mar-04 12:00 0.561979018311 -17.6730642 2363-Mar-04 15:00 0.560708809104 -17.5118650 2363-Mar-04 18:00 0.559450294745 -17.3491106 2363-Mar-04 21:00 0.558203587578 -17.1847996 2363-Mar-05 00:00 0.556968800045 -17.0189308 2363-Mar-05 03:00 0.555746044654 -16.8515035 2363-Mar-05 06:00 0.554535433947 -16.6825174 2363-Mar-05 09:00 0.553337080474 -16.5119727 2363-Mar-05 12:00 0.552151096756 -16.3398699 2363-Mar-05 15:00 0.550977595261 -16.1662101 2363-Mar-05 18:00 0.549816688364 -15.9909947 2363-Mar-05 21:00 0.548668488315 -15.8142257 2363-Mar-06 00:00 0.547533107209 -15.6359055 2363-Mar-06 03:00 0.546410656948 -15.4560370 2363-Mar-06 06:00 0.545301249205 -15.2746236 2363-Mar-06 09:00 0.544204995392 -15.0916692 2363-Mar-06 12:00 0.543122006620 -14.9071782 2363-Mar-06 15:00 0.542052393662 -14.7211556 2363-Mar-06 18:00 0.540996266919 -14.5336067 2363-Mar-06 21:00 0.539953736374 -14.3445376 2363-Mar-07 00:00 0.538924911563 -14.1539549 2363-Mar-07 03:00 0.537909901528 -13.9618655 2363-Mar-07 06:00 0.536908814781 -13.7682771 2363-Mar-07 09:00 0.535921759262 -13.5731979 2363-Mar-07 12:00 0.534948842299 -13.3766367 2363-Mar-07 15:00 0.533990170566 -13.1786029 2363-Mar-07 18:00 0.533045850042 -12.9791062 2363-Mar-07 21:00 0.532115985967 -12.7781573 2363-Mar-08 00:00 0.531200682804 -12.5757673 2363-Mar-08 03:00 0.530300044192 -12.3719478 2363-Mar-08 06:00 0.529414172902 -12.1667110 2363-Mar-08 09:00 0.528543170800 -11.9600700 2363-Mar-08 12:00 0.527687138795 -11.7520382 2363-Mar-08 15:00 0.526846176804 -11.5426297 2363-Mar-08 18:00 0.526020383700 -11.3318592 2363-Mar-08 21:00 0.525209857273 -11.1197421 2363-Mar-09 00:00 0.524414694184 -10.9062942 2363-Mar-09 03:00 0.523634989920 -10.6915322 2363-Mar-09 06:00 0.522870838753 -10.4754731 2363-Mar-09 09:00 0.522122333691 -10.2581348 2363-Mar-09 12:00 0.521389566436 -10.0395357 2363-Mar-09 15:00 0.520672627343 -9.8196947 2363-Mar-09 18:00 0.519971605371 -9.5986315 2363-Mar-09 21:00 0.519286588042 -9.3763663 2363-Mar-10 00:00 0.518617661396 -9.1529199 2363-Mar-10 03:00 0.517964909950 -8.9283136 2363-Mar-10 06:00 0.517328416653 -8.7025695 2363-Mar-10 09:00 0.516708262844 -8.4757102 2363-Mar-10 12:00 0.516104528209 -8.2477589 2363-Mar-10 15:00 0.515517290742 -8.0187392 2363-Mar-10 18:00 0.514946626701 -7.7886756 2363-Mar-10 21:00 0.514392610570 -7.5575928 2363-Mar-11 00:00 0.513855315014 -7.3255162 2363-Mar-11 03:00 0.513334810846 -7.0924720 2363-Mar-11 06:00 0.512831166983 -6.8584864 2363-Mar-11 09:00 0.512344450412 -6.6235866 2363-Mar-11 12:00 0.511874726149 -6.3878001 2363-Mar-11 15:00 0.511422057206 -6.1511548 2363-Mar-11 18:00 0.510986504553 -5.9136794 2363-Mar-11 21:00 0.510568127085 -5.6754027 2363-Mar-12 00:00 0.510166981588 -5.4363543 2363-Mar-12 03:00 0.509783122704 -5.1965639 2363-Mar-12 06:00 0.509416602905 -4.9560620 2363-Mar-12 09:00 0.509067472454 -4.7148792 2363-Mar-12 12:00 0.508735779385 -4.4730466 2363-Mar-12 15:00 0.508421569467 -4.2305959 2363-Mar-12 18:00 0.508124886181 -3.9875588 2363-Mar-12 21:00 0.507845770694 -3.7439677 2363-Mar-13 00:00 0.507584261831 -3.4998550 2363-Mar-13 03:00 0.507340396058 -3.2552536 2363-Mar-13 06:00 0.507114207453 -3.0101968 2363-Mar-13 09:00 0.506905727691 -2.7647179 2363-Mar-13 12:00 0.506714986020 -2.5188507 2363-Mar-13 15:00 0.506542009247 -2.2726290 2363-Mar-13 18:00 0.506386821722 -2.0260872 2363-Mar-13 21:00 0.506249445318 -1.7792594 2363-Mar-14 00:00 0.506129899424 -1.5321803 2363-Mar-14 03:00 0.506028200928 -1.2848844 2363-Mar-14 06:00 0.505944364208 -1.0374068 2363-Mar-14 09:00 0.505878401128 -0.7897821 2363-Mar-14 12:00 0.505830321021 -0.5420456 2363-Mar-14 15:00 0.505800130692 -0.2942323 2363-Mar-14 18:00 0.505787834410 -0.0463772 2363-Mar-14 21:00 0.505793433905 0.2014844 2363-Mar-15 00:00 0.505816928368 0.4493173 2363-Mar-15 03:00 0.505858314450 0.6970865 2363-Mar-15 06:00 0.505917586269 0.9447567 2363-Mar-15 09:00 0.505994735406 1.1922931 2363-Mar-15 12:00 0.506089750916 1.4396605 2363-Mar-15 15:00 0.506202619333 1.6868241 2363-Mar-15 18:00 0.506333324676 1.9337493 2363-Mar-15 21:00 0.506481848466 2.1804013 2363-Mar-16 00:00 0.506648169726 2.4267458 2363-Mar-16 03:00 0.506832265007 2.6727486 2363-Mar-16 06:00 0.507034108390 2.9183757 2363-Mar-16 09:00 0.507253671510 3.1635932 2363-Mar-16 12:00 0.507490923573 3.4083676 2363-Mar-16 15:00 0.507745831369 3.6526656 2363-Mar-16 18:00 0.508018359297 3.8964542 2363-Mar-16 21:00 0.508308469385 4.1397008 2363-Mar-17 00:00 0.508616121315 4.3823731 2363-Mar-17 03:00 0.508941272441 4.6244389 2363-Mar-17 06:00 0.509283877822 4.8658666 2363-Mar-17 09:00 0.509643890244 5.1066250 2363-Mar-17 12:00 0.510021260249 5.3466833 2363-Mar-17 15:00 0.510415936164 5.5860108 2363-Mar-17 18:00 0.510827864131 5.8245776 2363-Mar-17 21:00 0.511256988138 6.0623541 2363-Mar-18 00:00 0.511703250053 6.2993111 2363-Mar-18 03:00 0.512166589656 6.5354199 2363-Mar-18 06:00 0.512646944671 6.7706523 2363-Mar-18 09:00 0.513144250807 7.0049807 2363-Mar-18 12:00 0.513658441788 7.2383778 2363-Mar-18 15:00 0.514189449393 7.4708170 2363-Mar-18 18:00 0.514737203496 7.7022720 2363-Mar-18 21:00 0.515301632096 7.9327173 2363-Mar-19 00:00 0.515882661369 8.1621278 2363-Mar-19 03:00 0.516480215696 8.3904789 2363-Mar-19 06:00 0.517094217708 8.6177468 2363-Mar-19 09:00 0.517724588332 8.8439080 2363-Mar-19 12:00 0.518371246822 9.0689397 2363-Mar-19 15:00 0.519034110810 9.2928198 2363-Mar-19 18:00 0.519713096346 9.5155266 2363-Mar-19 21:00 0.520408117936 9.7370390 2363-Mar-20 00:00 0.521119088595 9.9573367 2363-Mar-20 03:00 0.521845919879 10.1763997 2363-Mar-20 06:00 0.522588521939 10.3942090 2363-Mar-20 09:00 0.523346803556 10.6107458 2363-Mar-20 12:00 0.524120672192 10.8259921 2363-Mar-20 15:00 0.524910034031 11.0399307 2363-Mar-20 18:00 0.525714794023 11.2525446 2363-Mar-20 21:00 0.526534855929 11.4638178 2363-Mar-21 00:00 0.527370122366 11.6737346 2363-Mar-21 03:00 0.528220494851 11.8822802 2363-Mar-21 06:00 0.529085873841 12.0894402 2363-Mar-21 09:00 0.529966158786 12.2952009 2363-Mar-21 12:00 0.530861248163 12.4995492 2363-Mar-21 15:00 0.531771039526 12.7024725 2363-Mar-21 18:00 0.532695429547 12.9039590 2363-Mar-21 21:00 0.533634314061 13.1039974 2363-Mar-22 00:00 0.534587588107 13.3025768 2363-Mar-22 03:00 0.535555145971 13.4996873 2363-Mar-22 06:00 0.536536881227 13.6953192 2363-Mar-22 09:00 0.537532686784 13.8894635 2363-Mar-22 12:00 0.538542454921 14.0821119 2363-Mar-22 15:00 0.539566077332 14.2732565 2363-Mar-22 18:00 0.540603445163 14.4628901 2363-Mar-22 21:00 0.541654449058 14.6510058 2363-Mar-23 00:00 0.542718979192 14.8375975 2363-Mar-23 03:00 0.543796925314 15.0226596 2363-Mar-23 06:00 0.544888176786 15.2061870 2363-Mar-23 09:00 0.545992622615 15.3881749 2363-Mar-23 12:00 0.547110151499 15.5686195 2363-Mar-23 15:00 0.548240651858 15.7475170 2363-Mar-23 18:00 0.549384011872 15.9248643 2363-Mar-23 21:00 0.550540119514 16.1006590 2363-Mar-24 00:00 0.551708862589 16.2748989 2363-Mar-24 03:00 0.552890128767 16.4475822 2363-Mar-24 06:00 0.554083805614 16.6187079 2363-Mar-24 09:00 0.555289780626 16.7882751 2363-Mar-24 12:00 0.556507941263 16.9562837 2363-Mar-24 15:00 0.557738174981 17.1227336 2363-Mar-24 18:00 0.558980369257 17.2876256 2363-Mar-24 21:00 0.560234411627 17.4509604 2363-Mar-25 00:00 0.561500189711 17.6127396 2363-Mar-25 03:00 0.562777591241 17.7729649 2363-Mar-25 06:00 0.564066504091 17.9316384 2363-Mar-25 09:00 0.565366816305 18.0887626 2363-Mar-25 12:00 0.566678416122 18.2443405 2363-Mar-25 15:00 0.568001192001 18.3983752 2363-Mar-25 18:00 0.569335032648 18.5508703 2363-Mar-25 21:00 0.570679827041 18.7018299 2363-Mar-26 00:00 0.572035464450 18.8512580 2363-Mar-26 03:00 0.573401834467 18.9991592 2363-Mar-26 06:00 0.574778827019 19.1455385 2363-Mar-26 09:00 0.576166332400 19.2904009 2363-Mar-26 12:00 0.577564241282 19.4337520 2363-Mar-26 15:00 0.578972444743 19.5755973 2363-Mar-26 18:00 0.580390834282 19.7159430 2363-Mar-26 21:00 0.581819301840 19.8547952 2363-Mar-27 00:00 0.583257739819 19.9921604 2363-Mar-27 03:00 0.584706041095 20.1280454 2363-Mar-27 06:00 0.586164099042 20.2624571 2363-Mar-27 09:00 0.587631807543 20.3954026 2363-Mar-27 12:00 0.589109061008 20.5268895 2363-Mar-27 15:00 0.590595754387 20.6569252 2363-Mar-27 18:00 0.592091783186 20.7855176 2363-Mar-27 21:00 0.593597043483 20.9126747 2363-Mar-28 00:00 0.595111431936 21.0384045 2363-Mar-28 03:00 0.596634845798 21.1627155 2363-Mar-28 06:00 0.598167182933 21.2856162 2363-Mar-28 09:00 0.599708341821 21.4071150 2363-Mar-28 12:00 0.601258221572 21.5272210 2363-Mar-28 15:00 0.602816721938 21.6459430 2363-Mar-28 18:00 0.604383743319 21.7632900 2363-Mar-28 21:00 0.605959186776 21.8792713 2363-Mar-29 00:00 0.607542954038 21.9938962 2363-Mar-29 03:00 0.609134947510 22.1071740 2363-Mar-29 06:00 0.610735070280 22.2191144 2363-Mar-29 09:00 0.612343226130 22.3297269 2363-Mar-29 12:00 0.613959319539 22.4390213 2363-Mar-29 15:00 0.615583255691 22.5470073 2363-Mar-29 18:00 0.617214940481 22.6536949 2363-Mar-29 21:00 0.618854280521 22.7590940 2363-Mar-30 00:00 0.620501183141 22.8632145 $$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 *******************************************************************************