******************************************************************************* JPL/HORIZONS Nishimura (C/2023 P1) 2025-Dec-12 18:04:21 Rec #:90004804 (+COV) Soln.date: 2024-Aug-08_14:27:14 # obs: 638 (2023-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460195.5 ! 2023-Sep-08.0000000 (TDB) RMSW= n.a. EC= .9961027387711852 QR= .2251517019248526 TP= 2460205.1414172221 OM= 66.83455164961916 W= 116.2979941884782 IN= 132.4764184218047 A= 57.77177579479868 MA= 359.9783592964848 ADIST= 115.3183998876725 PER= 439.11854419827 N= .002244556 ANGMOM= .011532156 DAN= .80443 DDN= .31182 L= 300.6371999 B= 41.3929671 MOID= .0788546 TP= 2023-Sep-17.6414172221 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.2 M2= n.a. k1= 8. 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= -7.987650632858E-9 A2= -5.951626598835E-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#30, data arc: 2023-01-19 to 2024-05-28 2: k1=8.; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 18:04:21 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: Nishimura (C/2023 P1) {source: JPL#30} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2430-Jan-01 00:00:00.0000 UT Stop time : A.D. 2430-Jun-01 00:00:00.0000 UT Step-size : 120 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.251212.p260310 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-DEC-12. PREDICTS-> 2026-MAR-09 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= 2460195.5 ! 2023-Sep-08.0000000 (TDB) RMSW= n.a. EC= .9961027387711852 QR= .2251517019248526 TP= 2460205.1414172221 OM= 66.83455164961916 W= 116.2979941884782 IN= 132.4764184218047 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.670815309194310E-01 Y= 1.587061328565784E-01 Z= 2.469295791453140E-01 VX=-8.464111805123230E-03 VY=-3.676469244622922E-02 VZ=-7.929564399102655E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.2 M2= n.a. k1= 8. 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= -7.987650632858E-9 A2= -5.951626598835E-10 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 2430-Jan-01 00:00:00.000 4.029812789025 19.9840543 20.5992295 20.5992289 2430-Jan-02 06:12:00.000 4.044322431774 19.9489542 20.5608330 20.5608323 2430-Jan-03 12:24:00.000 4.058806654316 19.9140886 20.5227063 20.5227057 2430-Jan-04 18:36:00.000 4.073265626104 19.8794548 20.4848463 20.4848457 2430-Jan-06 00:48:00.000 4.087699514613 19.8450502 20.4472498 20.4472491 2430-Jan-07 07:00:00.000 4.102108485371 19.8108720 20.4099134 20.4099127 2430-Jan-08 13:12:00.000 4.116492701993 19.7769178 20.3728340 20.3728334 2430-Jan-09 19:24:00.000 4.130852326207 19.7431848 20.3360087 20.3360080 2430-Jan-11 01:36:00.000 4.145187517889 19.7096705 20.2994342 20.2994336 2430-Jan-12 07:48:00.000 4.159498435088 19.6763726 20.2631077 20.2631071 2430-Jan-13 14:00:00.000 4.173785234058 19.6432884 20.2270262 20.2270256 2430-Jan-14 20:12:00.000 4.188048069288 19.6104157 20.1911869 20.1911862 2430-Jan-16 02:24:00.000 4.202287093531 19.5777520 20.1555868 20.1555861 2430-Jan-17 08:36:00.000 4.216502457833 19.5452950 20.1202232 20.1202226 2430-Jan-18 14:48:00.000 4.230694311565 19.5130425 20.0850935 20.0850928 2430-Jan-19 21:00:00.000 4.244862802451 19.4809921 20.0501948 20.0501942 2430-Jan-21 03:12:00.000 4.259008076600 19.4491417 20.0155247 20.0155240 2430-Jan-22 09:24:00.000 4.273130278526 19.4174891 19.9810804 19.9810797 2430-Jan-23 15:36:00.000 4.287229551183 19.3860322 19.9468594 19.9468588 2430-Jan-24 21:48:00.000 4.301306035985 19.3547688 19.9128593 19.9128586 2430-Jan-26 04:00:00.000 4.315359872833 19.3236970 19.8790776 19.8790769 2430-Jan-27 10:12:00.000 4.329391200133 19.2928146 19.8455117 19.8455111 2430-Jan-28 16:24:00.000 4.343400154822 19.2621197 19.8121595 19.8121588 2430-Jan-29 22:36:00.000 4.357386872388 19.2316102 19.7790184 19.7790177 2430-Jan-31 04:48:00.000 4.371351486891 19.2012842 19.7460861 19.7460855 2430-Feb-01 11:00:00.000 4.385294130983 19.1711399 19.7133605 19.7133598 2430-Feb-02 17:12:00.000 4.399214935927 19.1411753 19.6808391 19.6808384 2430-Feb-03 23:24:00.000 4.413114031616 19.1113884 19.6485198 19.6485192 2430-Feb-05 05:36:00.000 4.426991546600 19.0817776 19.6164005 19.6163998 2430-Feb-06 11:48:00.000 4.440847608092 19.0523410 19.5844789 19.5844782 2430-Feb-07 18:00:00.000 4.454682342001 19.0230767 19.5527529 19.5527522 2430-Feb-09 00:12:00.000 4.468495872939 18.9939830 19.5212204 19.5212198 2430-Feb-10 06:24:00.000 4.482288324249 18.9650582 19.4898794 19.4898788 2430-Feb-11 12:36:00.000 4.496059818015 18.9363006 19.4587279 19.4587273 2430-Feb-12 18:48:00.000 4.509810475089 18.9077085 19.4277639 19.4277632 2430-Feb-14 01:00:00.000 4.523540415099 18.8792801 19.3969853 19.3969846 2430-Feb-15 07:12:00.000 4.537249756473 18.8510139 19.3663902 19.3663896 2430-Feb-16 13:24:00.000 4.550938616455 18.8229083 19.3359769 19.3359762 2430-Feb-17 19:36:00.000 4.564607111121 18.7949616 19.3057432 19.3057426 2430-Feb-19 01:48:00.000 4.578255355395 18.7671723 19.2756875 19.2756869 2430-Feb-20 08:00:00.000 4.591883463064 18.7395388 19.2458078 19.2458072 2430-Feb-21 14:12:00.000 4.605491546799 18.7120596 19.2161024 19.2161018 2430-Feb-22 20:24:00.000 4.619079718164 18.6847332 19.1865696 19.1865689 2430-Feb-24 02:36:00.000 4.632648087638 18.6575581 19.1572074 19.1572068 2430-Feb-25 08:48:00.000 4.646196764625 18.6305328 19.1280143 19.1280137 2430-Feb-26 15:00:00.000 4.659725857470 18.6036559 19.0989886 19.0989880 2430-Feb-27 21:12:00.000 4.673235473475 18.5769259 19.0701285 19.0701279 2430-Mar-01 03:24:00.000 4.686725718912 18.5503415 19.0414324 19.0414318 2430-Mar-02 09:36:00.000 4.700196699038 18.5239013 19.0128987 19.0128981 2430-Mar-03 15:48:00.000 4.713648518109 18.4976039 18.9845258 18.9845251 2430-Mar-04 22:00:00.000 4.727081279390 18.4714479 18.9563120 18.9563114 2430-Mar-06 04:12:00.000 4.740495085174 18.4454320 18.9282559 18.9282553 2430-Mar-07 10:24:00.000 4.753890036791 18.4195549 18.9003559 18.9003553 2430-Mar-08 16:36:00.000 4.767266234621 18.3938153 18.8726105 18.8726099 2430-Mar-09 22:48:00.000 4.780623778110 18.3682119 18.8450181 18.8450175 2430-Mar-11 05:00:00.000 4.793962765779 18.3427435 18.8175774 18.8175768 2430-Mar-12 11:12:00.000 4.807283295236 18.3174088 18.7902868 18.7902862 2430-Mar-13 17:24:00.000 4.820585463191 18.2922066 18.7631450 18.7631444 2430-Mar-14 23:36:00.000 4.833869365465 18.2671356 18.7361504 18.7361498 2430-Mar-16 05:48:00.000 4.847135097002 18.2421947 18.7093018 18.7093012 2430-Mar-17 12:00:00.000 4.860382751882 18.2173827 18.6825976 18.6825970 2430-Mar-18 18:12:00.000 4.873612423332 18.1926984 18.6560367 18.6560361 2430-Mar-20 00:24:00.000 4.886824203733 18.1681406 18.6296175 18.6296169 2430-Mar-21 06:36:00.000 4.900018184635 18.1437083 18.6033389 18.6033383 2430-Mar-22 12:48:00.000 4.913194456767 18.1194003 18.5771994 18.5771988 2430-Mar-23 19:00:00.000 4.926353110046 18.0952155 18.5511979 18.5511973 2430-Mar-25 01:12:00.000 4.939494233587 18.0711527 18.5253329 18.5253324 2430-Mar-26 07:24:00.000 4.952617915714 18.0472110 18.4996034 18.4996028 2430-Mar-27 13:36:00.000 4.965724243968 18.0233892 18.4740080 18.4740074 2430-Mar-28 19:48:00.000 4.978813305119 17.9996863 18.4485454 18.4485448 2430-Mar-30 02:00:00.000 4.991885185172 17.9761012 18.4232146 18.4232140 2430-Mar-31 08:12:00.000 5.004939969377 17.9526330 18.3980142 18.3980136 2430-Apr-01 14:24:00.000 5.017977742240 17.9292805 18.3729431 18.3729426 2430-Apr-02 20:36:00.000 5.030998587526 17.9060428 18.3480002 18.3479996 2430-Apr-04 02:48:00.000 5.044002588271 17.8829189 18.3231843 18.3231837 2430-Apr-05 09:00:00.000 5.056989826790 17.8599078 18.2984942 18.2984936 2430-Apr-06 15:12:00.000 5.069960384683 17.8370085 18.2739288 18.2739282 2430-Apr-07 21:24:00.000 5.082914342841 17.8142200 18.2494870 18.2494864 2430-Apr-09 03:36:00.000 5.095851781462 17.7915414 18.2251676 18.2251670 2430-Apr-10 09:48:00.000 5.108772780047 17.7689717 18.2009697 18.2009691 2430-Apr-11 16:00:00.000 5.121677417419 17.7465101 18.1768922 18.1768916 2430-Apr-12 22:12:00.000 5.134565771727 17.7241555 18.1529339 18.1529333 2430-Apr-14 04:24:00.000 5.147437920460 17.7019072 18.1290938 18.1290932 2430-Apr-15 10:36:00.000 5.160293940452 17.6797641 18.1053710 18.1053704 2430-Apr-16 16:48:00.000 5.173133907897 17.6577255 18.0817644 18.0817638 2430-Apr-17 23:00:00.000 5.185957898359 17.6357904 18.0582731 18.0582724 2430-Apr-19 05:12:00.000 5.198765986779 17.6139580 18.0348960 18.0348953 2430-Apr-20 11:24:00.000 5.211558247490 17.5922275 18.0116322 18.0116316 2430-Apr-21 17:36:00.000 5.224334754221 17.5705981 17.9884808 17.9884801 2430-Apr-22 23:48:00.000 5.237095580104 17.5490689 17.9654408 17.9654401 2430-Apr-24 06:00:00.000 5.249840797687 17.5276391 17.9425112 17.9425106 2430-Apr-25 12:12:00.000 5.262570478933 17.5063080 17.9196913 17.9196907 2430-Apr-26 18:24:00.000 5.275284695229 17.4850747 17.8969800 17.8969794 2430-Apr-28 00:36:00.000 5.287983517390 17.4639385 17.8743765 17.8743758 2430-Apr-29 06:48:00.000 5.300667015667 17.4428986 17.8518798 17.8518792 2430-Apr-30 13:00:00.000 5.313335259751 17.4219542 17.8294892 17.8294885 2430-May-01 19:12:00.000 5.325988318776 17.4011046 17.8072036 17.8072030 2430-May-03 01:24:00.000 5.338626261326 17.3803489 17.7850223 17.7850217 2430-May-04 07:36:00.000 5.351249155442 17.3596866 17.7629444 17.7629437 2430-May-05 13:48:00.000 5.363857068627 17.3391168 17.7409690 17.7409684 2430-May-06 20:00:00.000 5.376450067849 17.3186387 17.7190953 17.7190947 2430-May-08 02:12:00.000 5.389028219548 17.2982518 17.6973225 17.6973219 2430-May-09 08:24:00.000 5.401591589646 17.2779552 17.6756498 17.6756491 2430-May-10 14:36:00.000 5.414140243545 17.2577482 17.6540763 17.6540757 2430-May-11 20:48:00.000 5.426674246139 17.2376303 17.6326013 17.6326006 2430-May-13 03:00:00.000 5.439193661816 17.2176005 17.6112239 17.6112233 2430-May-14 09:12:00.000 5.451698554464 17.1976584 17.5899434 17.5899428 2430-May-15 15:24:00.000 5.464188987479 17.1778032 17.5687590 17.5687584 2430-May-16 21:36:00.000 5.476665023769 17.1580342 17.5476700 17.5476694 2430-May-18 03:48:00.000 5.489126725757 17.1383508 17.5266756 17.5266749 2430-May-19 10:00:00.000 5.501574155389 17.1187523 17.5057750 17.5057743 2430-May-20 16:12:00.000 5.514007374141 17.0992381 17.4849675 17.4849669 2430-May-21 22:24:00.000 5.526426443018 17.0798075 17.4642524 17.4642518 2430-May-23 04:36:00.000 5.538831422567 17.0604600 17.4436290 17.4436283 2430-May-24 10:48:00.000 5.551222372875 17.0411948 17.4230965 17.4230958 2430-May-25 17:00:00.000 5.563599353578 17.0220114 17.4026543 17.4026536 2430-May-26 23:12:00.000 5.575962423866 17.0029091 17.3823016 17.3823009 2430-May-28 05:24:00.000 5.588311642485 16.9838874 17.3620377 17.3620371 2430-May-29 11:36:00.000 5.600647067745 16.9649456 17.3418621 17.3418614 2430-May-30 17:48:00.000 5.612968757524 16.9460832 17.3217739 17.3217732 2430-Jun-01 00:00:00.000 5.625276769269 16.9272995 17.3017726 17.3017719 $$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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ********************************************************************************** !$$SOF CENTER = '@Sun' COMMAND = '2023 P1' QUANTITIES = '19,22' START_TIME = '2430-Jan-01' STEP_SIZE = '120' STOP_TIME = '2430-Jun-01'