******************************************************************************* JPL/HORIZONS 12P/Pons-Brooks 2024-May-20 14:20:21 Rec #:90000223 (+COV) Soln.date: 2024-May-14_12:51:15 # obs: 7843 (1953-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460202.5 ! 2023-Sep-15.0000000 (TDB) RMSW= n.a. EC= .9545604021343332 QR= .780863418843884 TP= 2460421.6315025329 OM= 255.8551012302765 W= 198.9880403452053 IN= 74.1908513997041 A= 17.18464633319056 MA= 356.9682178436606 ADIST= 33.58842924753724 PER= 71.23921089090901 N= .013835446 ANGMOM= .021251693 DAN= 15.67299 DDN= .80218 L= 81.21052330000001 B= -18.243947 MOID= .181381 TP= 2024-Apr-21.1315025329 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#K242/63, data arc: 1953-06-20 to 2024-05-01 2: k1=15.0, k2=10.0; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Mon May 20 14:20:21 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 12P/Pons-Brooks {source: JPL#K242/63} 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.240517.p240810 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-17. PREDICTS-> 2024-AUG-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 (>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= 2460202.5 ! 2023-Sep-15.0000000 (TDB) RMSW= n.a. EC= .9545604021343332 QR= .780863418843884 TP= 2460421.6315025329 OM= 255.8551012302765 W= 198.9880403452053 IN= 74.1908513997041 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 6.282248838029983E-01 Y=-2.169926855266044E+00 Z= 2.384688937518528E+00 VX=-1.323344654172063E-04 VY= 1.207649244975588E-02 VZ=-4.134149846123034E-03 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 0.780778276531 -0.0059759 2024-Apr-21 03:00:20.000 0.780778275744 -0.0057902 2024-Apr-21 03:00:40.000 0.780778274982 -0.0056045 2024-Apr-21 03:01:00.000 0.780778274245 -0.0054187 2024-Apr-21 03:01:20.000 0.780778273533 -0.0052330 2024-Apr-21 03:01:40.000 0.780778272846 -0.0050473 2024-Apr-21 03:02:00.000 0.780778272184 -0.0048616 2024-Apr-21 03:02:20.000 0.780778271546 -0.0046759 2024-Apr-21 03:02:40.000 0.780778270934 -0.0044901 2024-Apr-21 03:03:00.000 0.780778270346 -0.0043044 2024-Apr-21 03:03:20.000 0.780778269783 -0.0041187 2024-Apr-21 03:03:40.000 0.780778269244 -0.0039330 2024-Apr-21 03:04:00.000 0.780778268731 -0.0037472 2024-Apr-21 03:04:20.000 0.780778268243 -0.0035615 2024-Apr-21 03:04:40.000 0.780778267779 -0.0033758 2024-Apr-21 03:05:00.000 0.780778267340 -0.0031901 2024-Apr-21 03:05:20.000 0.780778266926 -0.0030043 2024-Apr-21 03:05:40.000 0.780778266537 -0.0028186 2024-Apr-21 03:06:00.000 0.780778266172 -0.0026329 2024-Apr-21 03:06:20.000 0.780778265833 -0.0024472 2024-Apr-21 03:06:40.000 0.780778265518 -0.0022615 2024-Apr-21 03:07:00.000 0.780778265228 -0.0020757 2024-Apr-21 03:07:20.000 0.780778264963 -0.0018900 2024-Apr-21 03:07:40.000 0.780778264723 -0.0017043 2024-Apr-21 03:08:00.000 0.780778264507 -0.0015186 2024-Apr-21 03:08:20.000 0.780778264316 -0.0013328 2024-Apr-21 03:08:40.000 0.780778264151 -0.0011471 2024-Apr-21 03:09:00.000 0.780778264010 -0.0009614 2024-Apr-21 03:09:20.000 0.780778263894 -0.0007757 2024-Apr-21 03:09:40.000 0.780778263802 -0.0005899 2024-Apr-21 03:10:00.000 0.780778263736 -0.0004042 2024-Apr-21 03:10:20.000 0.780778263694 -0.0002185 2024-Apr-21 03:10:40.000 0.780778263677 -0.0000328 2024-Apr-21 03:11:00.000 0.780778263686 0.0001529 2024-Apr-21 03:11:20.000 0.780778263718 0.0003387 2024-Apr-21 03:11:40.000 0.780778263776 0.0005244 2024-Apr-21 03:12:00.000 0.780778263859 0.0007101 2024-Apr-21 03:12:20.000 0.780778263966 0.0008958 2024-Apr-21 03:12:40.000 0.780778264098 0.0010816 2024-Apr-21 03:13:00.000 0.780778264255 0.0012673 2024-Apr-21 03:13:20.000 0.780778264437 0.0014530 2024-Apr-21 03:13:40.000 0.780778264644 0.0016387 2024-Apr-21 03:14:00.000 0.780778264875 0.0018245 2024-Apr-21 03:14:20.000 0.780778265131 0.0020102 2024-Apr-21 03:14:40.000 0.780778265413 0.0021959 2024-Apr-21 03:15:00.000 0.780778265719 0.0023816 2024-Apr-21 03:15:20.000 0.780778266049 0.0025673 2024-Apr-21 03:15:40.000 0.780778266405 0.0027531 2024-Apr-21 03:16:00.000 0.780778266786 0.0029388 2024-Apr-21 03:16:20.000 0.780778267191 0.0031245 2024-Apr-21 03:16:40.000 0.780778267621 0.0033102 2024-Apr-21 03:17:00.000 0.780778268076 0.0034960 2024-Apr-21 03:17:20.000 0.780778268556 0.0036817 2024-Apr-21 03:17:40.000 0.780778269060 0.0038674 2024-Apr-21 03:18:00.000 0.780778269590 0.0040531 2024-Apr-21 03:18:20.000 0.780778270144 0.0042389 2024-Apr-21 03:18:40.000 0.780778270723 0.0044246 2024-Apr-21 03:19:00.000 0.780778271327 0.0046103 2024-Apr-21 03:19:20.000 0.780778271956 0.0047960 2024-Apr-21 03:19:40.000 0.780778272610 0.0049817 2024-Apr-21 03:20:00.000 0.780778273288 0.0051675 2024-Apr-21 03:20:20.000 0.780778273991 0.0053532 2024-Apr-21 03:20:40.000 0.780778274719 0.0055389 2024-Apr-21 03:21:00.000 0.780778275472 0.0057246 2024-Apr-21 03:21:20.000 0.780778276250 0.0059104 2024-Apr-21 03:21:40.000 0.780778277053 0.0060961 2024-Apr-21 03:22:00.000 0.780778277880 0.0062818 2024-Apr-21 03:22:20.000 0.780778278732 0.0064675 2024-Apr-21 03:22:40.000 0.780778279609 0.0066533 2024-Apr-21 03:23:00.000 0.780778280511 0.0068390 2024-Apr-21 03:23:20.000 0.780778281438 0.0070247 2024-Apr-21 03:23:40.000 0.780778282390 0.0072104 2024-Apr-21 03:24:00.000 0.780778283366 0.0073961 2024-Apr-21 03:24:20.000 0.780778284367 0.0075819 2024-Apr-21 03:24:40.000 0.780778285393 0.0077676 2024-Apr-21 03:25:00.000 0.780778286444 0.0079533 2024-Apr-21 03:25:20.000 0.780778287520 0.0081390 2024-Apr-21 03:25:40.000 0.780778288620 0.0083248 2024-Apr-21 03:26:00.000 0.780778289746 0.0085105 2024-Apr-21 03:26:20.000 0.780778290896 0.0086962 2024-Apr-21 03:26:40.000 0.780778292071 0.0088819 2024-Apr-21 03:27:00.000 0.780778293271 0.0090677 2024-Apr-21 03:27:20.000 0.780778294496 0.0092534 2024-Apr-21 03:27:40.000 0.780778295745 0.0094391 2024-Apr-21 03:28:00.000 0.780778297019 0.0096248 2024-Apr-21 03:28:20.000 0.780778298319 0.0098105 2024-Apr-21 03:28:40.000 0.780778299643 0.0099963 2024-Apr-21 03:29:00.000 0.780778300991 0.0101820 2024-Apr-21 03:29:20.000 0.780778302365 0.0103677 2024-Apr-21 03:29:40.000 0.780778303764 0.0105534 2024-Apr-21 03:30:00.000 0.780778305187 0.0107392 2024-Apr-21 03:30:20.000 0.780778306635 0.0109249 2024-Apr-21 03:30:40.000 0.780778308108 0.0111106 2024-Apr-21 03:31:00.000 0.780778309606 0.0112963 2024-Apr-21 03:31:20.000 0.780778311129 0.0114821 2024-Apr-21 03:31:40.000 0.780778312676 0.0116678 2024-Apr-21 03:32:00.000 0.780778314248 0.0118535 2024-Apr-21 03:32:20.000 0.780778315845 0.0120392 2024-Apr-21 03:32:40.000 0.780778317467 0.0122249 2024-Apr-21 03:33:00.000 0.780778319114 0.0124107 2024-Apr-21 03:33:20.000 0.780778320786 0.0125964 2024-Apr-21 03:33:40.000 0.780778322482 0.0127821 2024-Apr-21 03:34:00.000 0.780778324204 0.0129678 2024-Apr-21 03:34:20.000 0.780778325950 0.0131536 2024-Apr-21 03:34:40.000 0.780778327721 0.0133393 2024-Apr-21 03:35:00.000 0.780778329516 0.0135250 2024-Apr-21 03:35:20.000 0.780778331337 0.0137107 2024-Apr-21 03:35:40.000 0.780778333182 0.0138965 2024-Apr-21 03:36:00.000 0.780778335053 0.0140822 2024-Apr-21 03:36:20.000 0.780778336948 0.0142679 2024-Apr-21 03:36:40.000 0.780778338868 0.0144536 2024-Apr-21 03:37:00.000 0.780778340813 0.0146393 2024-Apr-21 03:37:20.000 0.780778342782 0.0148251 2024-Apr-21 03:37:40.000 0.780778344777 0.0150108 2024-Apr-21 03:38:00.000 0.780778346796 0.0151965 2024-Apr-21 03:38:20.000 0.780778348840 0.0153822 2024-Apr-21 03:38:40.000 0.780778350909 0.0155680 2024-Apr-21 03:39:00.000 0.780778353002 0.0157537 2024-Apr-21 03:39:20.000 0.780778355121 0.0159394 2024-Apr-21 03:39:40.000 0.780778357264 0.0161251 2024-Apr-21 03:40:00.000 0.780778359433 0.0163108 $$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' QUANTITIES = '19' START_TIME = '2024-Apr-21 03:00' STEP_SIZE = '120' STOP_TIME = '2024-Apr-21 03:40'