******************************************************************************* JPL/HORIZONS 158P/Kowal-LINEAR 2024-May-02 02:44:57 Rec #:90001096 (+COV) Soln.date: 2024-Feb-17_03:13:44 # obs: 1067 (1979-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456039.5 ! 2012-Apr-22.0000000 (TDB) RMSW= n.a. EC= .03048827733269002 QR= 4.576544861287607 TP= 2456194.0994888786 OM= 137.3079502029187 W= 232.448268589821 IN= 7.907830060014261 A= 4.720463666696744 MA= 345.1428626322945 ADIST= 4.864382472105881 PER= 10.2561695340825 N= .096100818 ANGMOM= .037356986 DAN= 4.80537 DDN= 4.63004 L= 9.4913711 B= -6.2619279 MOID= 3.57878995 TP= 2012-Sep-23.5994888786 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7. M2= 12.7 k1= 13.75 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#159, data arc: 1979-07-24 to 2024-01-05 2: k1=13.75, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 2 02:44:57 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 158P/Kowal-LINEAR {source: JPL#159} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2021-May-09 00:00:00.0000 UT Stop time : A.D. 2021-May-15 00:00:00.0000 UT Step-size : 180 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.240501.p240725 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-01. PREDICTS-> 2024-JUL-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= 2456039.5 ! 2012-Apr-22.0000000 (TDB) RMSW= n.a. EC= .03048827733269002 QR= 4.576544861287607 TP= 2456194.0994888786 OM= 137.3079502029187 W= 232.448268589821 IN= 7.907830060014261 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 4.538661362526970E+00 Y=-3.094819900001726E-01 Z=-5.443938122407889E-01 VX= 7.493949209616700E-04 VY= 7.759814179608539E-03 VZ= 2.389377748941243E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7. M2= 12.7 k1= 13.75 k2= 5. PHCOF= .030 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2021-May-09 00:00 4.799152382349 -0.0028528 2021-May-09 03:00 4.799152180212 -0.0027466 2021-May-09 06:00 4.799151985743 -0.0026404 2021-May-09 09:00 4.799151798945 -0.0025341 2021-May-09 12:00 4.799151619821 -0.0024278 2021-May-09 15:00 4.799151448372 -0.0023215 2021-May-09 18:00 4.799151284601 -0.0022151 2021-May-09 21:00 4.799151128510 -0.0021087 2021-May-10 00:00 4.799150980102 -0.0020023 2021-May-10 03:00 4.799150839378 -0.0018959 2021-May-10 06:00 4.799150706341 -0.0017894 2021-May-10 09:00 4.799150580994 -0.0016829 2021-May-10 12:00 4.799150463337 -0.0015763 2021-May-10 15:00 4.799150353375 -0.0014697 2021-May-10 18:00 4.799150251108 -0.0013631 2021-May-10 21:00 4.799150156540 -0.0012565 2021-May-11 00:00 4.799150069672 -0.0011498 2021-May-11 03:00 4.799149990506 -0.0010431 2021-May-11 06:00 4.799149919046 -0.0009364 2021-May-11 09:00 4.799149855293 -0.0008296 2021-May-11 12:00 4.799149799249 -0.0007228 2021-May-11 15:00 4.799149750917 -0.0006160 2021-May-11 18:00 4.799149710300 -0.0005091 2021-May-11 21:00 4.799149677398 -0.0004023 2021-May-12 00:00 4.799149652215 -0.0002953 2021-May-12 03:00 4.799149634753 -0.0001884 2021-May-12 06:00 4.799149625013 -0.0000814 2021-May-12 09:00 4.799149622999 0.0000256 2021-May-12 12:00 4.799149628713 0.0001327 2021-May-12 15:00 4.799149642156 0.0002397 2021-May-12 18:00 4.799149663332 0.0003468 2021-May-12 21:00 4.799149692242 0.0004540 2021-May-13 00:00 4.799149728888 0.0005612 2021-May-13 03:00 4.799149773273 0.0006684 2021-May-13 06:00 4.799149825400 0.0007756 2021-May-13 09:00 4.799149885270 0.0008829 2021-May-13 12:00 4.799149952885 0.0009902 2021-May-13 15:00 4.799150028248 0.0010975 2021-May-13 18:00 4.799150111362 0.0012048 2021-May-13 21:00 4.799150202227 0.0013122 2021-May-14 00:00 4.799150300848 0.0014196 2021-May-14 03:00 4.799150407225 0.0015271 2021-May-14 06:00 4.799150521362 0.0016346 2021-May-14 09:00 4.799150643259 0.0017421 2021-May-14 12:00 4.799150772921 0.0018496 2021-May-14 15:00 4.799150910349 0.0019572 2021-May-14 18:00 4.799151055544 0.0020648 2021-May-14 21:00 4.799151208511 0.0021725 2021-May-15 00:00 4.799151369250 0.0022801 $$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 = '158P' START_TIME = '2021-May-09' STOP_TIME = '2021-May-15' STEP_SIZE = '3 hours' QUANTITIES = '19'