******************************************************************************* JPL/HORIZONS Nishimura (C/2023 P1) 2025-Dec-12 18:04:24 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 18:04:25 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. 2023-Sep-17 15:00:00.0000 UT Stop time : A.D. 2023-Sep-17 16:00:00.0000 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 2023-Sep-17 15:00:00.000 0.225148954337 -0.1712347 88.6853693 88.6853694 2023-Sep-17 15:00:30.000 0.225148920348 -0.1677390 88.6853760 88.6853761 2023-Sep-17 15:01:00.000 0.225148887061 -0.1642432 88.6853826 88.6853826 2023-Sep-17 15:01:30.000 0.225148854475 -0.1607475 88.6853890 88.6853890 2023-Sep-17 15:02:00.000 0.225148822589 -0.1572518 88.6853953 88.6853953 2023-Sep-17 15:02:30.000 0.225148791405 -0.1537560 88.6854014 88.6854015 2023-Sep-17 15:03:00.000 0.225148760921 -0.1502603 88.6854074 88.6854075 2023-Sep-17 15:03:30.000 0.225148731139 -0.1467646 88.6854133 88.6854133 2023-Sep-17 15:04:00.000 0.225148702058 -0.1432688 88.6854190 88.6854191 2023-Sep-17 15:04:30.000 0.225148673677 -0.1397731 88.6854246 88.6854247 2023-Sep-17 15:05:00.000 0.225148645998 -0.1362773 88.6854301 88.6854301 2023-Sep-17 15:05:30.000 0.225148619020 -0.1327816 88.6854354 88.6854354 2023-Sep-17 15:06:00.000 0.225148592743 -0.1292858 88.6854406 88.6854406 2023-Sep-17 15:06:30.000 0.225148567167 -0.1257901 88.6854456 88.6854456 2023-Sep-17 15:07:00.000 0.225148542291 -0.1222943 88.6854505 88.6854505 2023-Sep-17 15:07:30.000 0.225148518117 -0.1187986 88.6854553 88.6854553 2023-Sep-17 15:08:00.000 0.225148494644 -0.1153028 88.6854599 88.6854599 2023-Sep-17 15:08:30.000 0.225148471872 -0.1118070 88.6854644 88.6854644 2023-Sep-17 15:09:00.000 0.225148449801 -0.1083113 88.6854687 88.6854688 2023-Sep-17 15:09:30.000 0.225148428431 -0.1048155 88.6854729 88.6854730 2023-Sep-17 15:10:00.000 0.225148407762 -0.1013198 88.6854770 88.6854770 2023-Sep-17 15:10:30.000 0.225148387794 -0.0978240 88.6854809 88.6854810 2023-Sep-17 15:11:00.000 0.225148368527 -0.0943282 88.6854847 88.6854848 2023-Sep-17 15:11:30.000 0.225148349962 -0.0908325 88.6854884 88.6854884 2023-Sep-17 15:12:00.000 0.225148332097 -0.0873367 88.6854919 88.6854919 2023-Sep-17 15:12:30.000 0.225148314933 -0.0838409 88.6854953 88.6854953 2023-Sep-17 15:13:00.000 0.225148298470 -0.0803452 88.6854985 88.6854986 2023-Sep-17 15:13:30.000 0.225148282709 -0.0768494 88.6855016 88.6855017 2023-Sep-17 15:14:00.000 0.225148267648 -0.0733536 88.6855046 88.6855046 2023-Sep-17 15:14:30.000 0.225148253288 -0.0698579 88.6855074 88.6855074 2023-Sep-17 15:15:00.000 0.225148239630 -0.0663621 88.6855101 88.6855101 2023-Sep-17 15:15:30.000 0.225148226672 -0.0628663 88.6855126 88.6855127 2023-Sep-17 15:16:00.000 0.225148214416 -0.0593705 88.6855150 88.6855151 2023-Sep-17 15:16:30.000 0.225148202860 -0.0558748 88.6855173 88.6855174 2023-Sep-17 15:17:00.000 0.225148192006 -0.0523790 88.6855194 88.6855195 2023-Sep-17 15:17:30.000 0.225148181852 -0.0488832 88.6855214 88.6855215 2023-Sep-17 15:18:00.000 0.225148172400 -0.0453874 88.6855233 88.6855233 2023-Sep-17 15:18:30.000 0.225148163648 -0.0418917 88.6855250 88.6855251 2023-Sep-17 15:19:00.000 0.225148155598 -0.0383959 88.6855266 88.6855266 2023-Sep-17 15:19:30.000 0.225148148249 -0.0349001 88.6855280 88.6855281 2023-Sep-17 15:20:00.000 0.225148141600 -0.0314043 88.6855293 88.6855294 2023-Sep-17 15:20:30.000 0.225148135653 -0.0279085 88.6855305 88.6855306 2023-Sep-17 15:21:00.000 0.225148130407 -0.0244128 88.6855315 88.6855316 2023-Sep-17 15:21:30.000 0.225148125862 -0.0209170 88.6855324 88.6855325 2023-Sep-17 15:22:00.000 0.225148122018 -0.0174212 88.6855332 88.6855332 2023-Sep-17 15:22:30.000 0.225148118875 -0.0139254 88.6855338 88.6855338 2023-Sep-17 15:23:00.000 0.225148116433 -0.0104296 88.6855342 88.6855343 2023-Sep-17 15:23:30.000 0.225148114692 -0.0069339 88.6855346 88.6855346 2023-Sep-17 15:24:00.000 0.225148113652 -0.0034381 88.6855348 88.6855348 2023-Sep-17 15:24:30.000 0.225148113313 0.0000577 88.6855348 88.6855349 2023-Sep-17 15:25:00.000 0.225148113675 0.0035535 88.6855348 88.6855348 2023-Sep-17 15:25:30.000 0.225148114738 0.0070493 88.6855345 88.6855346 2023-Sep-17 15:26:00.000 0.225148116502 0.0105450 88.6855342 88.6855342 2023-Sep-17 15:26:30.000 0.225148118967 0.0140408 88.6855337 88.6855337 2023-Sep-17 15:27:00.000 0.225148122133 0.0175366 88.6855330 88.6855331 2023-Sep-17 15:27:30.000 0.225148126001 0.0210324 88.6855323 88.6855323 2023-Sep-17 15:28:00.000 0.225148130569 0.0245281 88.6855314 88.6855314 2023-Sep-17 15:28:30.000 0.225148135838 0.0280239 88.6855303 88.6855304 2023-Sep-17 15:29:00.000 0.225148141809 0.0315197 88.6855291 88.6855292 2023-Sep-17 15:29:30.000 0.225148148480 0.0350155 88.6855278 88.6855279 2023-Sep-17 15:30:00.000 0.225148155852 0.0385113 88.6855263 88.6855264 2023-Sep-17 15:30:30.000 0.225148163926 0.0420070 88.6855247 88.6855248 2023-Sep-17 15:31:00.000 0.225148172700 0.0455028 88.6855230 88.6855231 2023-Sep-17 15:31:30.000 0.225148182176 0.0489986 88.6855211 88.6855212 2023-Sep-17 15:32:00.000 0.225148192353 0.0524944 88.6855191 88.6855192 2023-Sep-17 15:32:30.000 0.225148203230 0.0559901 88.6855169 88.6855170 2023-Sep-17 15:33:00.000 0.225148214809 0.0594859 88.6855147 88.6855147 2023-Sep-17 15:33:30.000 0.225148227089 0.0629817 88.6855122 88.6855123 2023-Sep-17 15:34:00.000 0.225148240069 0.0664775 88.6855096 88.6855097 2023-Sep-17 15:34:30.000 0.225148253751 0.0699732 88.6855069 88.6855070 2023-Sep-17 15:35:00.000 0.225148268134 0.0734690 88.6855041 88.6855041 2023-Sep-17 15:35:30.000 0.225148283218 0.0769648 88.6855011 88.6855012 2023-Sep-17 15:36:00.000 0.225148299002 0.0804605 88.6854980 88.6854980 2023-Sep-17 15:36:30.000 0.225148315488 0.0839563 88.6854947 88.6854948 2023-Sep-17 15:37:00.000 0.225148332675 0.0874521 88.6854913 88.6854914 2023-Sep-17 15:37:30.000 0.225148350563 0.0909478 88.6854878 88.6854878 2023-Sep-17 15:38:00.000 0.225148369152 0.0944436 88.6854841 88.6854842 2023-Sep-17 15:38:30.000 0.225148388442 0.0979393 88.6854803 88.6854803 2023-Sep-17 15:39:00.000 0.225148408433 0.1014351 88.6854763 88.6854764 2023-Sep-17 15:39:30.000 0.225148429125 0.1049309 88.6854722 88.6854723 2023-Sep-17 15:40:00.000 0.225148450518 0.1084266 88.6854680 88.6854681 2023-Sep-17 15:40:30.000 0.225148472612 0.1119224 88.6854636 88.6854637 2023-Sep-17 15:41:00.000 0.225148495408 0.1154181 88.6854591 88.6854592 2023-Sep-17 15:41:30.000 0.225148518904 0.1189139 88.6854545 88.6854545 2023-Sep-17 15:42:00.000 0.225148543101 0.1224096 88.6854497 88.6854498 2023-Sep-17 15:42:30.000 0.225148567999 0.1259054 88.6854448 88.6854448 2023-Sep-17 15:43:00.000 0.225148593598 0.1294011 88.6854397 88.6854398 2023-Sep-17 15:43:30.000 0.225148619899 0.1328969 88.6854345 88.6854346 2023-Sep-17 15:44:00.000 0.225148646900 0.1363926 88.6854292 88.6854292 2023-Sep-17 15:44:30.000 0.225148674602 0.1398884 88.6854237 88.6854238 2023-Sep-17 15:45:00.000 0.225148703006 0.1433841 88.6854181 88.6854182 2023-Sep-17 15:45:30.000 0.225148732110 0.1468799 88.6854123 88.6854124 2023-Sep-17 15:46:00.000 0.225148761916 0.1503756 88.6854065 88.6854065 2023-Sep-17 15:46:30.000 0.225148792422 0.1538713 88.6854004 88.6854005 2023-Sep-17 15:47:00.000 0.225148823630 0.1573671 88.6853943 88.6853943 2023-Sep-17 15:47:30.000 0.225148855538 0.1608628 88.6853880 88.6853880 2023-Sep-17 15:48:00.000 0.225148888148 0.1643585 88.6853815 88.6853816 2023-Sep-17 15:48:30.000 0.225148921458 0.1678543 88.6853749 88.6853750 2023-Sep-17 15:49:00.000 0.225148955470 0.1713500 88.6853682 88.6853683 2023-Sep-17 15:49:30.000 0.225148990182 0.1748457 88.6853613 88.6853614 2023-Sep-17 15:50:00.000 0.225149025596 0.1783414 88.6853543 88.6853544 2023-Sep-17 15:50:30.000 0.225149061711 0.1818372 88.6853472 88.6853473 2023-Sep-17 15:51:00.000 0.225149098526 0.1853329 88.6853399 88.6853400 2023-Sep-17 15:51:30.000 0.225149136043 0.1888286 88.6853325 88.6853326 2023-Sep-17 15:52:00.000 0.225149174261 0.1923243 88.6853250 88.6853250 2023-Sep-17 15:52:30.000 0.225149213180 0.1958200 88.6853173 88.6853173 2023-Sep-17 15:53:00.000 0.225149252799 0.1993157 88.6853095 88.6853095 2023-Sep-17 15:53:30.000 0.225149293120 0.2028114 88.6853015 88.6853015 2023-Sep-17 15:54:00.000 0.225149334142 0.2063071 88.6852934 88.6852934 2023-Sep-17 15:54:30.000 0.225149375865 0.2098028 88.6852851 88.6852852 2023-Sep-17 15:55:00.000 0.225149418289 0.2132985 88.6852768 88.6852768 2023-Sep-17 15:55:30.000 0.225149461413 0.2167942 88.6852682 88.6852683 2023-Sep-17 15:56:00.000 0.225149505239 0.2202899 88.6852596 88.6852596 2023-Sep-17 15:56:30.000 0.225149549766 0.2237856 88.6852508 88.6852508 2023-Sep-17 15:57:00.000 0.225149594994 0.2272813 88.6852419 88.6852419 2023-Sep-17 15:57:30.000 0.225149640923 0.2307770 88.6852328 88.6852328 2023-Sep-17 15:58:00.000 0.225149687553 0.2342727 88.6852236 88.6852236 2023-Sep-17 15:58:30.000 0.225149734884 0.2377683 88.6852142 88.6852143 2023-Sep-17 15:59:00.000 0.225149782916 0.2412640 88.6852047 88.6852048 2023-Sep-17 15:59:30.000 0.225149831649 0.2447597 88.6851951 88.6851952 2023-Sep-17 16:00:00.000 0.225149881083 0.2482553 88.6851853 88.6851854 $$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 = '2023-Sep-17 15:00' STEP_SIZE = '120' STOP_TIME = '2023-Sep-17 16:00'