******************************************************************************* JPL/HORIZONS 12P/Pons-Brooks 2023-Jun-03 04:50:05 Rec #:90000223 (+COV) Soln.date: 2023-May-25_09:09:48 # obs: 410 (1953-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459497.5 ! 2021-Oct-10.0000000 (TDB) RMSW= n.a. EC= .9544011631791516 QR= .7818543227831541 TP= 2460421.8591128415 OM= 255.7766807616084 W= 198.9930219952145 IN= 74.13712813843124 A= 17.14636550609729 MA= 347.1682264992488 ADIST= 33.51087668941142 PER= 71.00130288583 N= .013881806 ANGMOM= .021264306 DAN= 15.66304 DDN= .80321 L= 81.1512412 B= -18.2436954 MOID= .17972 TP= 2024-Apr-21.3591128415 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 comments 1: soln ref.= JPL#K242/22, data arc: 1953-06-20 to 2023-05-24 2: k1=15.0, k2=10.0; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Jun 3 04:50:05 2023 Pasadena, USA / Horizons ******************************************************************************* Target body name: 12P/Pons-Brooks {source: JPL#K242/22} 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.230601.p230825 EOP coverage : DATA-BASED 1962-JAN-20 TO 2023-JUN-01. PREDICTS-> 2023-AUG-24 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= 2459497.5 ! 2021-Oct-10.0000000 (TDB) RMSW= n.a. EC= .9544011631791516 QR= .7818543227831541 TP= 2460421.8591128415 OM= 255.7766807616084 W= 198.9930219952145 IN= 74.13712813843124 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 3.184303954096250E-01 Y=-8.351545334316569E+00 Z= 3.479902596428260E+00 VX= 6.151473696956746E-04 VY= 6.891191964608071E-03 VZ=-4.972935042901075E-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. ******************************************************************************* Date__(UT)__HR:MN:SC.fff r rdot ********************************************************* $$SOE 2024-Apr-21 03:00:00.000 0.780798401256 -0.0085364 2024-Apr-21 03:00:20.000 0.780798400127 -0.0083507 2024-Apr-21 03:00:40.000 0.780798399023 -0.0081650 2024-Apr-21 03:01:00.000 0.780798397944 -0.0079793 2024-Apr-21 03:01:20.000 0.780798396890 -0.0077936 2024-Apr-21 03:01:40.000 0.780798395860 -0.0076079 2024-Apr-21 03:02:00.000 0.780798394855 -0.0074222 2024-Apr-21 03:02:20.000 0.780798393875 -0.0072364 2024-Apr-21 03:02:40.000 0.780798392920 -0.0070507 2024-Apr-21 03:03:00.000 0.780798391990 -0.0068650 2024-Apr-21 03:03:20.000 0.780798391085 -0.0066793 2024-Apr-21 03:03:40.000 0.780798390204 -0.0064936 2024-Apr-21 03:04:00.000 0.780798389348 -0.0063079 2024-Apr-21 03:04:20.000 0.780798388518 -0.0061222 2024-Apr-21 03:04:40.000 0.780798387712 -0.0059365 2024-Apr-21 03:05:00.000 0.780798386930 -0.0057507 2024-Apr-21 03:05:20.000 0.780798386174 -0.0055650 2024-Apr-21 03:05:40.000 0.780798385442 -0.0053793 2024-Apr-21 03:06:00.000 0.780798384736 -0.0051936 2024-Apr-21 03:06:20.000 0.780798384054 -0.0050079 2024-Apr-21 03:06:40.000 0.780798383396 -0.0048222 2024-Apr-21 03:07:00.000 0.780798382764 -0.0046365 2024-Apr-21 03:07:20.000 0.780798382157 -0.0044507 2024-Apr-21 03:07:40.000 0.780798381574 -0.0042650 2024-Apr-21 03:08:00.000 0.780798381016 -0.0040793 2024-Apr-21 03:08:20.000 0.780798380483 -0.0038936 2024-Apr-21 03:08:40.000 0.780798379975 -0.0037079 2024-Apr-21 03:09:00.000 0.780798379492 -0.0035222 2024-Apr-21 03:09:20.000 0.780798379033 -0.0033365 2024-Apr-21 03:09:40.000 0.780798378600 -0.0031508 2024-Apr-21 03:10:00.000 0.780798378191 -0.0029650 2024-Apr-21 03:10:20.000 0.780798377807 -0.0027793 2024-Apr-21 03:10:40.000 0.780798377448 -0.0025936 2024-Apr-21 03:11:00.000 0.780798377114 -0.0024079 2024-Apr-21 03:11:20.000 0.780798376804 -0.0022222 2024-Apr-21 03:11:40.000 0.780798376519 -0.0020365 2024-Apr-21 03:12:00.000 0.780798376260 -0.0018508 2024-Apr-21 03:12:20.000 0.780798376025 -0.0016650 2024-Apr-21 03:12:40.000 0.780798375814 -0.0014793 2024-Apr-21 03:13:00.000 0.780798375629 -0.0012936 2024-Apr-21 03:13:20.000 0.780798375468 -0.0011079 2024-Apr-21 03:13:40.000 0.780798375333 -0.0009222 2024-Apr-21 03:14:00.000 0.780798375222 -0.0007365 2024-Apr-21 03:14:20.000 0.780798375136 -0.0005508 2024-Apr-21 03:14:40.000 0.780798375075 -0.0003651 2024-Apr-21 03:15:00.000 0.780798375038 -0.0001793 2024-Apr-21 03:15:20.000 0.780798375027 0.0000064 2024-Apr-21 03:15:40.000 0.780798375040 0.0001921 2024-Apr-21 03:16:00.000 0.780798375078 0.0003778 2024-Apr-21 03:16:20.000 0.780798375141 0.0005635 2024-Apr-21 03:16:40.000 0.780798375229 0.0007492 2024-Apr-21 03:17:00.000 0.780798375341 0.0009349 2024-Apr-21 03:17:20.000 0.780798375479 0.0011207 2024-Apr-21 03:17:40.000 0.780798375641 0.0013064 2024-Apr-21 03:18:00.000 0.780798375828 0.0014921 2024-Apr-21 03:18:20.000 0.780798376040 0.0016778 2024-Apr-21 03:18:40.000 0.780798376277 0.0018635 2024-Apr-21 03:19:00.000 0.780798376538 0.0020492 2024-Apr-21 03:19:20.000 0.780798376824 0.0022349 2024-Apr-21 03:19:40.000 0.780798377136 0.0024206 2024-Apr-21 03:20:00.000 0.780798377472 0.0026064 2024-Apr-21 03:20:20.000 0.780798377833 0.0027921 2024-Apr-21 03:20:40.000 0.780798378218 0.0029778 2024-Apr-21 03:21:00.000 0.780798378629 0.0031635 2024-Apr-21 03:21:20.000 0.780798379064 0.0033492 2024-Apr-21 03:21:40.000 0.780798379524 0.0035349 2024-Apr-21 03:22:00.000 0.780798380009 0.0037206 2024-Apr-21 03:22:20.000 0.780798380519 0.0039064 2024-Apr-21 03:22:40.000 0.780798381054 0.0040921 2024-Apr-21 03:23:00.000 0.780798381613 0.0042778 2024-Apr-21 03:23:20.000 0.780798382198 0.0044635 2024-Apr-21 03:23:40.000 0.780798382807 0.0046492 2024-Apr-21 03:24:00.000 0.780798383441 0.0048349 2024-Apr-21 03:24:20.000 0.780798384100 0.0050206 2024-Apr-21 03:24:40.000 0.780798384783 0.0052063 2024-Apr-21 03:25:00.000 0.780798385492 0.0053921 2024-Apr-21 03:25:20.000 0.780798386225 0.0055778 2024-Apr-21 03:25:40.000 0.780798386983 0.0057635 2024-Apr-21 03:26:00.000 0.780798387766 0.0059492 2024-Apr-21 03:26:20.000 0.780798388574 0.0061349 2024-Apr-21 03:26:40.000 0.780798389406 0.0063206 2024-Apr-21 03:27:00.000 0.780798390264 0.0065063 2024-Apr-21 03:27:20.000 0.780798391146 0.0066920 2024-Apr-21 03:27:40.000 0.780798392053 0.0068778 2024-Apr-21 03:28:00.000 0.780798392985 0.0070635 2024-Apr-21 03:28:20.000 0.780798393942 0.0072492 2024-Apr-21 03:28:40.000 0.780798394923 0.0074349 2024-Apr-21 03:29:00.000 0.780798395930 0.0076206 2024-Apr-21 03:29:20.000 0.780798396961 0.0078063 2024-Apr-21 03:29:40.000 0.780798398017 0.0079920 2024-Apr-21 03:30:00.000 0.780798399098 0.0081778 2024-Apr-21 03:30:20.000 0.780798400204 0.0083635 2024-Apr-21 03:30:40.000 0.780798401334 0.0085492 2024-Apr-21 03:31:00.000 0.780798402490 0.0087349 2024-Apr-21 03:31:20.000 0.780798403670 0.0089206 2024-Apr-21 03:31:40.000 0.780798404875 0.0091063 2024-Apr-21 03:32:00.000 0.780798406105 0.0092920 2024-Apr-21 03:32:20.000 0.780798407359 0.0094777 2024-Apr-21 03:32:40.000 0.780798408639 0.0096635 2024-Apr-21 03:33:00.000 0.780798409943 0.0098492 2024-Apr-21 03:33:20.000 0.780798411272 0.0100349 2024-Apr-21 03:33:40.000 0.780798412626 0.0102206 2024-Apr-21 03:34:00.000 0.780798414005 0.0104063 2024-Apr-21 03:34:20.000 0.780798415409 0.0105920 2024-Apr-21 03:34:40.000 0.780798416837 0.0107777 2024-Apr-21 03:35:00.000 0.780798418291 0.0109635 2024-Apr-21 03:35:20.000 0.780798419769 0.0111492 2024-Apr-21 03:35:40.000 0.780798421272 0.0113349 2024-Apr-21 03:36:00.000 0.780798422800 0.0115206 2024-Apr-21 03:36:20.000 0.780798424352 0.0117063 2024-Apr-21 03:36:40.000 0.780798425930 0.0118920 2024-Apr-21 03:37:00.000 0.780798427532 0.0120777 2024-Apr-21 03:37:20.000 0.780798429159 0.0122634 2024-Apr-21 03:37:40.000 0.780798430811 0.0124492 2024-Apr-21 03:38:00.000 0.780798432488 0.0126349 2024-Apr-21 03:38:20.000 0.780798434189 0.0128206 2024-Apr-21 03:38:40.000 0.780798435916 0.0130063 2024-Apr-21 03:39:00.000 0.780798437667 0.0131920 2024-Apr-21 03:39:20.000 0.780798439443 0.0133777 2024-Apr-21 03:39:40.000 0.780798441244 0.0135634 2024-Apr-21 03:40:00.000 0.780798443070 0.0137492 $$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'