******************************************************************************* JPL/HORIZONS 12P/Pons-Brooks 2024-Jul-26 17:07:59 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 17:07:59 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 00:00:00.0000 UT Stop time : A.D. 2024-Apr-22 00:00:00.0000 UT Step-size : 10 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.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 r rdot VmagSn VmagOb *************************************************************************** $$SOE 2024-Apr-21 00:00 0.780780464571 -0.0011322 47.1258303 54.3216397 2024-Apr-21 00:10 0.780780471204 0.0044395 47.1258301 54.3205083 2024-Apr-21 00:20 0.780780500183 0.0100111 47.1258292 54.3193768 2024-Apr-21 00:30 0.780780551508 0.0155828 47.1258275 54.3182452 2024-Apr-21 00:40 0.780780625180 0.0211544 47.1258252 54.3171135 2024-Apr-21 00:50 0.780780721199 0.0267260 47.1258222 54.3159817 2024-Apr-21 01:00 0.780780839564 0.0322977 47.1258185 54.3148498 2024-Apr-21 01:10 0.780780980276 0.0378693 47.1258142 54.3137178 2024-Apr-21 01:20 0.780781143334 0.0434409 47.1258091 54.3125856 2024-Apr-21 01:30 0.780781328739 0.0490126 47.1258033 54.3114534 2024-Apr-21 01:40 0.780781536491 0.0545842 47.1257969 54.3103211 2024-Apr-21 01:50 0.780781766588 0.0601558 47.1257897 54.3091887 2024-Apr-21 02:00 0.780782019033 0.0657274 47.1257819 54.3080561 2024-Apr-21 02:10 0.780782293823 0.0712990 47.1257734 54.3069235 2024-Apr-21 02:20 0.780782590960 0.0768706 47.1257642 54.3057907 2024-Apr-21 02:30 0.780782910443 0.0824422 47.1257543 54.3046579 2024-Apr-21 02:40 0.780783252273 0.0880137 47.1257437 54.3035250 2024-Apr-21 02:50 0.780783616449 0.0935853 47.1257324 54.3023919 2024-Apr-21 03:00 0.780784002971 0.0991568 47.1257204 54.3012588 2024-Apr-21 03:10 0.780784411839 0.1047284 47.1257078 54.3001255 2024-Apr-21 03:20 0.780784843054 0.1102999 47.1256944 54.2989922 2024-Apr-21 03:30 0.780785296614 0.1158714 47.1256804 54.2978587 2024-Apr-21 03:40 0.780785772521 0.1214429 47.1256657 54.2967251 2024-Apr-21 03:50 0.780786270773 0.1270144 47.1256502 54.2955915 2024-Apr-21 04:00 0.780786791371 0.1325859 47.1256341 54.2944577 2024-Apr-21 04:10 0.780787334315 0.1381573 47.1256173 54.2933239 2024-Apr-21 04:20 0.780787899605 0.1437288 47.1255998 54.2921899 2024-Apr-21 04:30 0.780788487241 0.1493002 47.1255817 54.2910559 2024-Apr-21 04:40 0.780789097223 0.1548716 47.1255628 54.2899217 2024-Apr-21 04:50 0.780789729549 0.1604430 47.1255432 54.2887875 2024-Apr-21 05:00 0.780790384222 0.1660143 47.1255230 54.2876531 2024-Apr-21 05:10 0.780791061240 0.1715857 47.1255020 54.2865187 2024-Apr-21 05:20 0.780791760603 0.1771570 47.1254804 54.2853841 2024-Apr-21 05:30 0.780792482311 0.1827283 47.1254581 54.2842495 2024-Apr-21 05:40 0.780793226365 0.1882996 47.1254351 54.2831147 2024-Apr-21 05:50 0.780793992764 0.1938709 47.1254114 54.2819799 2024-Apr-21 06:00 0.780794781508 0.1994421 47.1253870 54.2808450 2024-Apr-21 06:10 0.780795592596 0.2050133 47.1253619 54.2797099 2024-Apr-21 06:20 0.780796426030 0.2105845 47.1253361 54.2785748 2024-Apr-21 06:30 0.780797281808 0.2161557 47.1253097 54.2774396 2024-Apr-21 06:40 0.780798159931 0.2217269 47.1252825 54.2763042 2024-Apr-21 06:50 0.780799060399 0.2272980 47.1252547 54.2751688 2024-Apr-21 07:00 0.780799983211 0.2328691 47.1252262 54.2740333 2024-Apr-21 07:10 0.780800928367 0.2384401 47.1251969 54.2728977 2024-Apr-21 07:20 0.780801895867 0.2440112 47.1251670 54.2717620 2024-Apr-21 07:30 0.780802885712 0.2495822 47.1251364 54.2706262 2024-Apr-21 07:40 0.780803897900 0.2551532 47.1251051 54.2694903 2024-Apr-21 07:50 0.780804932433 0.2607241 47.1250732 54.2683543 2024-Apr-21 08:00 0.780805989309 0.2662950 47.1250405 54.2672182 2024-Apr-21 08:10 0.780807068529 0.2718659 47.1250071 54.2660820 2024-Apr-21 08:20 0.780808170092 0.2774368 47.1249731 54.2649458 2024-Apr-21 08:30 0.780809293998 0.2830076 47.1249383 54.2638094 2024-Apr-21 08:40 0.780810440248 0.2885784 47.1249029 54.2626729 2024-Apr-21 08:50 0.780811608841 0.2941492 47.1248668 54.2615364 2024-Apr-21 09:00 0.780812799777 0.2997199 47.1248300 54.2603997 2024-Apr-21 09:10 0.780814013056 0.3052906 47.1247925 54.2592630 2024-Apr-21 09:20 0.780815248678 0.3108613 47.1247543 54.2581261 2024-Apr-21 09:30 0.780816506642 0.3164319 47.1247154 54.2569892 2024-Apr-21 09:40 0.780817786948 0.3220025 47.1246759 54.2558522 2024-Apr-21 09:50 0.780819089597 0.3275730 47.1246356 54.2547151 2024-Apr-21 10:00 0.780820414588 0.3331435 47.1245947 54.2535779 2024-Apr-21 10:10 0.780821761921 0.3387140 47.1245530 54.2524406 2024-Apr-21 10:20 0.780823131595 0.3442844 47.1245107 54.2513032 2024-Apr-21 10:30 0.780824523611 0.3498548 47.1244677 54.2501658 2024-Apr-21 10:40 0.780825937969 0.3554252 47.1244240 54.2490282 2024-Apr-21 10:50 0.780827374668 0.3609955 47.1243796 54.2478905 2024-Apr-21 11:00 0.780828833708 0.3665658 47.1243345 54.2467528 2024-Apr-21 11:10 0.780830315089 0.3721360 47.1242887 54.2456150 2024-Apr-21 11:20 0.780831818811 0.3777062 47.1242423 54.2444770 2024-Apr-21 11:30 0.780833344874 0.3832763 47.1241951 54.2433390 2024-Apr-21 11:40 0.780834893277 0.3888464 47.1241473 54.2422009 2024-Apr-21 11:50 0.780836464020 0.3944164 47.1240987 54.2410627 2024-Apr-21 12:00 0.780838057104 0.3999864 47.1240495 54.2399244 2024-Apr-21 12:10 0.780839672527 0.4055564 47.1239996 54.2387861 2024-Apr-21 12:20 0.780841310290 0.4111263 47.1239490 54.2376476 2024-Apr-21 12:30 0.780842970393 0.4166962 47.1238977 54.2365091 2024-Apr-21 12:40 0.780844652835 0.4222660 47.1238457 54.2353705 2024-Apr-21 12:50 0.780846357616 0.4278358 47.1237930 54.2342317 2024-Apr-21 13:00 0.780848084736 0.4334055 47.1237397 54.2330929 2024-Apr-21 13:10 0.780849834195 0.4389751 47.1236856 54.2319540 2024-Apr-21 13:20 0.780851605992 0.4445448 47.1236309 54.2308151 2024-Apr-21 13:30 0.780853400128 0.4501143 47.1235755 54.2296760 2024-Apr-21 13:40 0.780855216602 0.4556838 47.1235193 54.2285368 2024-Apr-21 13:50 0.780857055414 0.4612533 47.1234625 54.2273976 2024-Apr-21 14:00 0.780858916563 0.4668227 47.1234050 54.2262583 2024-Apr-21 14:10 0.780860800050 0.4723921 47.1233469 54.2251189 2024-Apr-21 14:20 0.780862705875 0.4779613 47.1232880 54.2239794 2024-Apr-21 14:30 0.780864634036 0.4835306 47.1232284 54.2228398 2024-Apr-21 14:40 0.780866584534 0.4890998 47.1231682 54.2217001 2024-Apr-21 14:50 0.780868557369 0.4946689 47.1231072 54.2205604 2024-Apr-21 15:00 0.780870552540 0.5002380 47.1230456 54.2194206 2024-Apr-21 15:10 0.780872570048 0.5058070 47.1229832 54.2182806 2024-Apr-21 15:20 0.780874609891 0.5113759 47.1229202 54.2171406 2024-Apr-21 15:30 0.780876672070 0.5169448 47.1228565 54.2160006 2024-Apr-21 15:40 0.780878756584 0.5225137 47.1227921 54.2148604 2024-Apr-21 15:50 0.780880863434 0.5280824 47.1227271 54.2137201 2024-Apr-21 16:00 0.780882992618 0.5336512 47.1226613 54.2125798 2024-Apr-21 16:10 0.780885144138 0.5392198 47.1225948 54.2114394 2024-Apr-21 16:20 0.780887317991 0.5447884 47.1225277 54.2102989 2024-Apr-21 16:30 0.780889514179 0.5503569 47.1224598 54.2091583 2024-Apr-21 16:40 0.780891732701 0.5559254 47.1223913 54.2080177 2024-Apr-21 16:50 0.780893973557 0.5614938 47.1223221 54.2068769 2024-Apr-21 17:00 0.780896236746 0.5670621 47.1222522 54.2057361 2024-Apr-21 17:10 0.780898522268 0.5726304 47.1221816 54.2045952 2024-Apr-21 17:20 0.780900830123 0.5781986 47.1221103 54.2034542 2024-Apr-21 17:30 0.780903160311 0.5837667 47.1220383 54.2023132 2024-Apr-21 17:40 0.780905512831 0.5893348 47.1219657 54.2011720 2024-Apr-21 17:50 0.780907887684 0.5949028 47.1218923 54.2000308 2024-Apr-21 18:00 0.780910284868 0.6004707 47.1218183 54.1988895 2024-Apr-21 18:10 0.780912704383 0.6060386 47.1217436 54.1977481 2024-Apr-21 18:20 0.780915146230 0.6116064 47.1216681 54.1966066 2024-Apr-21 18:30 0.780917610408 0.6171741 47.1215920 54.1954651 2024-Apr-21 18:40 0.780920096917 0.6227417 47.1215152 54.1943235 2024-Apr-21 18:50 0.780922605756 0.6283093 47.1214377 54.1931818 2024-Apr-21 19:00 0.780925136925 0.6338768 47.1213596 54.1920400 2024-Apr-21 19:10 0.780927690424 0.6394443 47.1212807 54.1908981 2024-Apr-21 19:20 0.780930266253 0.6450116 47.1212012 54.1897562 2024-Apr-21 19:30 0.780932864411 0.6505789 47.1211209 54.1886142 2024-Apr-21 19:40 0.780935484897 0.6561461 47.1210400 54.1874721 2024-Apr-21 19:50 0.780938127713 0.6617132 47.1209584 54.1863299 2024-Apr-21 20:00 0.780940792857 0.6672803 47.1208760 54.1851877 2024-Apr-21 20:10 0.780943480328 0.6728473 47.1207931 54.1840454 2024-Apr-21 20:20 0.780946190128 0.6784142 47.1207094 54.1829030 2024-Apr-21 20:30 0.780948922255 0.6839810 47.1206250 54.1817605 2024-Apr-21 20:40 0.780951676709 0.6895477 47.1205399 54.1806180 2024-Apr-21 20:50 0.780954453489 0.6951144 47.1204542 54.1794753 2024-Apr-21 21:00 0.780957252596 0.7006810 47.1203677 54.1783326 2024-Apr-21 21:10 0.780960074030 0.7062475 47.1202806 54.1771899 2024-Apr-21 21:20 0.780962917789 0.7118139 47.1201928 54.1760470 2024-Apr-21 21:30 0.780965783873 0.7173802 47.1201043 54.1749041 2024-Apr-21 21:40 0.780968672283 0.7229465 47.1200151 54.1737611 2024-Apr-21 21:50 0.780971583018 0.7285126 47.1199252 54.1726180 2024-Apr-21 22:00 0.780974516076 0.7340787 47.1198346 54.1714749 2024-Apr-21 22:10 0.780977471460 0.7396447 47.1197434 54.1703317 2024-Apr-21 22:20 0.780980449166 0.7452106 47.1196514 54.1691884 2024-Apr-21 22:30 0.780983449197 0.7507765 47.1195588 54.1680450 2024-Apr-21 22:40 0.780986471550 0.7563422 47.1194654 54.1669016 2024-Apr-21 22:50 0.780989516226 0.7619078 47.1193714 54.1657581 2024-Apr-21 23:00 0.780992583225 0.7674734 47.1192767 54.1646145 2024-Apr-21 23:10 0.780995672545 0.7730389 47.1191813 54.1634708 2024-Apr-21 23:20 0.780998784187 0.7786043 47.1190852 54.1623271 2024-Apr-21 23:30 0.781001918151 0.7841696 47.1189885 54.1611833 2024-Apr-21 23:40 0.781005074435 0.7897348 47.1188910 54.1600394 2024-Apr-21 23:50 0.781008253040 0.7952999 47.1187929 54.1588955 2024-Apr-22 00:00 0.781011453966 0.8008649 47.1186940 54.1577515 $$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/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' STOP_TIME = '2024-Apr-22' STEP_SIZE = '10 minutes' QUANTITIES = '19,22'