******************************************************************************* JPL/HORIZONS 12P/Pons-Brooks 2024-Jul-26 16:23:21 Rec #:90000223 (+COV) Soln.date: 2022-May-09_10:46:48 # obs: 430 (1812-1954) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2414270.5 ! 1897-Dec-12.0000000 (TDB) RMSW= n.a. EC= .9546793966627336 QR= .7745662359217889 TP= 2409204.3283676389 OM= 255.7625218419923 W= 199.1315081578012 IN= 73.9093741705598 A= 17.09081916137854 MA= 70.670742511341 ADIST= 33.4070720868353 PER= 70.656565071711 N= .013949536 ANGMOM= .021166473 DAN= 15.4416 DDN= .79604 L= 81.25434970000001 B= -18.3546696 MOID= .18651199 TP= 1884-Jan-28.8283676389 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 5. M2= 11. k1= 15. k2= 10. 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= -9.793811291456E-10 A2= -2.709762193263E-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#J542/1, data arc: 1812-08-18 to 1954-09-03 2: k1=15.0, k2=10.0; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Jul 26 16:23:21 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 12P/Pons-Brooks {source: JPL#J542/1} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2024-Apr-21 03:00:00.0000 UT Stop time : A.D. 2024-Apr-21 03:40:00.0000 UT Step-size : 120 steps ******************************************************************************* 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.240726.p241019 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-JUL-26. PREDICTS-> 2024-OCT-18 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= 2414270.5 ! 1897-Dec-12.0000000 (TDB) RMSW= n.a. EC= .9546793966627336 QR= .7745662359217889 TP= 2409204.3283676389 OM= 255.7625218419923 W= 199.1315081578012 IN= 73.9093741705598 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-5.030385393040465E+00 Y=-2.359549665228674E+01 Z=-6.232037106320721E+00 VX=-2.251229415231440E-04 VY=-2.521444768552887E-03 VZ= 1.694756805598230E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 5. M2= 11. k1= 15. k2= 10. 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= -9.793811291456E-10 A2= -2.709762193263E-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 ********************************************************* $$SOE 2024-Apr-21 03:00:00.000 0.780784002971 0.0991568 2024-Apr-21 03:00:20.000 0.780784016240 0.0993426 2024-Apr-21 03:00:40.000 0.780784029534 0.0995283 2024-Apr-21 03:01:00.000 0.780784042852 0.0997140 2024-Apr-21 03:01:20.000 0.780784056196 0.0998997 2024-Apr-21 03:01:40.000 0.780784069564 0.1000854 2024-Apr-21 03:02:00.000 0.780784082957 0.1002712 2024-Apr-21 03:02:20.000 0.780784096375 0.1004569 2024-Apr-21 03:02:40.000 0.780784109818 0.1006426 2024-Apr-21 03:03:00.000 0.780784123285 0.1008283 2024-Apr-21 03:03:20.000 0.780784136778 0.1010140 2024-Apr-21 03:03:40.000 0.780784150295 0.1011997 2024-Apr-21 03:04:00.000 0.780784163837 0.1013855 2024-Apr-21 03:04:20.000 0.780784177404 0.1015712 2024-Apr-21 03:04:40.000 0.780784190995 0.1017569 2024-Apr-21 03:05:00.000 0.780784204612 0.1019426 2024-Apr-21 03:05:20.000 0.780784218253 0.1021283 2024-Apr-21 03:05:40.000 0.780784231919 0.1023140 2024-Apr-21 03:06:00.000 0.780784245610 0.1024998 2024-Apr-21 03:06:20.000 0.780784259326 0.1026855 2024-Apr-21 03:06:40.000 0.780784273067 0.1028712 2024-Apr-21 03:07:00.000 0.780784286832 0.1030569 2024-Apr-21 03:07:20.000 0.780784300623 0.1032426 2024-Apr-21 03:07:40.000 0.780784314438 0.1034284 2024-Apr-21 03:08:00.000 0.780784328278 0.1036141 2024-Apr-21 03:08:20.000 0.780784342143 0.1037998 2024-Apr-21 03:08:40.000 0.780784356032 0.1039855 2024-Apr-21 03:09:00.000 0.780784369947 0.1041712 2024-Apr-21 03:09:20.000 0.780784383886 0.1043569 2024-Apr-21 03:09:40.000 0.780784397850 0.1045427 2024-Apr-21 03:10:00.000 0.780784411839 0.1047284 2024-Apr-21 03:10:20.000 0.780784425853 0.1049141 2024-Apr-21 03:10:40.000 0.780784439892 0.1050998 2024-Apr-21 03:11:00.000 0.780784453955 0.1052855 2024-Apr-21 03:11:20.000 0.780784468043 0.1054712 2024-Apr-21 03:11:40.000 0.780784482156 0.1056570 2024-Apr-21 03:12:00.000 0.780784496294 0.1058427 2024-Apr-21 03:12:20.000 0.780784510457 0.1060284 2024-Apr-21 03:12:40.000 0.780784524645 0.1062141 2024-Apr-21 03:13:00.000 0.780784538857 0.1063998 2024-Apr-21 03:13:20.000 0.780784553094 0.1065856 2024-Apr-21 03:13:40.000 0.780784567357 0.1067713 2024-Apr-21 03:14:00.000 0.780784581643 0.1069570 2024-Apr-21 03:14:20.000 0.780784595955 0.1071427 2024-Apr-21 03:14:40.000 0.780784610292 0.1073284 2024-Apr-21 03:15:00.000 0.780784624653 0.1075141 2024-Apr-21 03:15:20.000 0.780784639039 0.1076999 2024-Apr-21 03:15:40.000 0.780784653450 0.1078856 2024-Apr-21 03:16:00.000 0.780784667886 0.1080713 2024-Apr-21 03:16:20.000 0.780784682347 0.1082570 2024-Apr-21 03:16:40.000 0.780784696833 0.1084427 2024-Apr-21 03:17:00.000 0.780784711343 0.1086284 2024-Apr-21 03:17:20.000 0.780784725878 0.1088142 2024-Apr-21 03:17:40.000 0.780784740438 0.1089999 2024-Apr-21 03:18:00.000 0.780784755023 0.1091856 2024-Apr-21 03:18:20.000 0.780784769633 0.1093713 2024-Apr-21 03:18:40.000 0.780784784267 0.1095570 2024-Apr-21 03:19:00.000 0.780784798927 0.1097428 2024-Apr-21 03:19:20.000 0.780784813611 0.1099285 2024-Apr-21 03:19:40.000 0.780784828320 0.1101142 2024-Apr-21 03:20:00.000 0.780784843054 0.1102999 2024-Apr-21 03:20:20.000 0.780784857812 0.1104856 2024-Apr-21 03:20:40.000 0.780784872596 0.1106713 2024-Apr-21 03:21:00.000 0.780784887404 0.1108571 2024-Apr-21 03:21:20.000 0.780784902237 0.1110428 2024-Apr-21 03:21:40.000 0.780784917095 0.1112285 2024-Apr-21 03:22:00.000 0.780784931978 0.1114142 2024-Apr-21 03:22:20.000 0.780784946886 0.1115999 2024-Apr-21 03:22:40.000 0.780784961818 0.1117856 2024-Apr-21 03:23:00.000 0.780784976775 0.1119714 2024-Apr-21 03:23:20.000 0.780784991758 0.1121571 2024-Apr-21 03:23:40.000 0.780785006764 0.1123428 2024-Apr-21 03:24:00.000 0.780785021796 0.1125285 2024-Apr-21 03:24:20.000 0.780785036853 0.1127142 2024-Apr-21 03:24:40.000 0.780785051934 0.1128999 2024-Apr-21 03:25:00.000 0.780785067041 0.1130857 2024-Apr-21 03:25:20.000 0.780785082172 0.1132714 2024-Apr-21 03:25:40.000 0.780785097328 0.1134571 2024-Apr-21 03:26:00.000 0.780785112508 0.1136428 2024-Apr-21 03:26:20.000 0.780785127714 0.1138285 2024-Apr-21 03:26:40.000 0.780785142944 0.1140142 2024-Apr-21 03:27:00.000 0.780785158200 0.1142000 2024-Apr-21 03:27:20.000 0.780785173480 0.1143857 2024-Apr-21 03:27:40.000 0.780785188785 0.1145714 2024-Apr-21 03:28:00.000 0.780785204114 0.1147571 2024-Apr-21 03:28:20.000 0.780785219469 0.1149428 2024-Apr-21 03:28:40.000 0.780785234848 0.1151285 2024-Apr-21 03:29:00.000 0.780785250252 0.1153143 2024-Apr-21 03:29:20.000 0.780785265681 0.1155000 2024-Apr-21 03:29:40.000 0.780785281135 0.1156857 2024-Apr-21 03:30:00.000 0.780785296614 0.1158714 2024-Apr-21 03:30:20.000 0.780785312118 0.1160571 2024-Apr-21 03:30:40.000 0.780785327646 0.1162428 2024-Apr-21 03:31:00.000 0.780785343199 0.1164286 2024-Apr-21 03:31:20.000 0.780785358777 0.1166143 2024-Apr-21 03:31:40.000 0.780785374380 0.1168000 2024-Apr-21 03:32:00.000 0.780785390008 0.1169857 2024-Apr-21 03:32:20.000 0.780785405660 0.1171714 2024-Apr-21 03:32:40.000 0.780785421338 0.1173572 2024-Apr-21 03:33:00.000 0.780785437040 0.1175429 2024-Apr-21 03:33:20.000 0.780785452767 0.1177286 2024-Apr-21 03:33:40.000 0.780785468518 0.1179143 2024-Apr-21 03:34:00.000 0.780785484295 0.1181000 2024-Apr-21 03:34:20.000 0.780785500097 0.1182857 2024-Apr-21 03:34:40.000 0.780785515923 0.1184715 2024-Apr-21 03:35:00.000 0.780785531774 0.1186572 2024-Apr-21 03:35:20.000 0.780785547650 0.1188429 2024-Apr-21 03:35:40.000 0.780785563551 0.1190286 2024-Apr-21 03:36:00.000 0.780785579476 0.1192143 2024-Apr-21 03:36:20.000 0.780785595427 0.1194000 2024-Apr-21 03:36:40.000 0.780785611402 0.1195857 2024-Apr-21 03:37:00.000 0.780785627402 0.1197715 2024-Apr-21 03:37:20.000 0.780785643427 0.1199572 2024-Apr-21 03:37:40.000 0.780785659477 0.1201429 2024-Apr-21 03:38:00.000 0.780785675552 0.1203286 2024-Apr-21 03:38:20.000 0.780785691651 0.1205143 2024-Apr-21 03:38:40.000 0.780785707775 0.1207000 2024-Apr-21 03:39:00.000 0.780785723924 0.1208858 2024-Apr-21 03:39:20.000 0.780785740098 0.1210715 2024-Apr-21 03:39:40.000 0.780785756297 0.1212572 2024-Apr-21 03:40:00.000 0.780785772521 0.1214429 $$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 = '90000223' START_TIME = '2024-Apr-21 03:00' STOP_TIME = '2024-Apr-21 03:40' STEP_SIZE = '120' QUANTITIES = '19'