******************************************************************************* JPL/HORIZONS PANSTARRS (C/2021 O3) 2025-Dec-12 17:52:23 Rec #:90004695 (+COV) Soln.date: 2024-Aug-08_14:32:18 # obs: 760 (2021-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459517.5 ! 2021-Oct-30.0000000 (TDB) RMSW= n.a. EC= 1.00015129657889 QR= .2873217024777257 TP= 2459690.5416030544 OM= 189.0273351765806 W= 299.9832861762227 IN= 56.77278941142959 A= -1899.062785066713 MA= -.002060846375684604ADIST= 9.999999E99 PER= 9.999999E99 N= 1.191E-5 ANGMOM= .013040585 DAN= .38317 DDN= 1.14897 L= 145.5041109 B= -46.4319117 MOID= .0630297 TP= 2022-Apr-21.0416030544 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 13.6 M2= n.a. k1= 4.5 k2= n.a. 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= 0. A2= 2.731814086437E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#17, data arc: 2021-07-26 to 2022-07-12 2: k1=4.5;After disintegration ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Dec 12 17:52:23 2025 Pasadena, USA / Horizons ******************************************************************************* Target body name: PANSTARRS (C/2021 O3) {source: JPL#17} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2022-May-01 00:00:00.0000 UT Stop time : A.D. 2022-May-20 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.251212.p260310 EOP coverage : DATA-BASED 1962-JAN-20 TO 2025-DEC-12. PREDICTS-> 2026-MAR-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= 2459517.5 ! 2021-Oct-30.0000000 (TDB) RMSW= n.a. EC= 1.00015129657889 QR= .2873217024777257 TP= 2459690.5416030544 OM= 189.0273351765806 W= 299.9832861762227 IN= 56.77278941142959 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.941078431674519E+00 Y=-6.885144693133191E-01 Z= 9.115426879644660E-01 VX=-1.078229984068218E-02 VY= 6.210392793758892E-03 VZ=-5.736164278228467E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 13.6 M2= n.a. k1= 4.5 k2= n.a. 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= 0. A2= 2.731814086437E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN delta deldot *************************************************** $$SOE 2022-May-01 00:00 0.66346465780223 -29.9924911 2022-May-01 03:00 0.66131961905137 -29.4248757 2022-May-01 06:00 0.65921549641109 -28.8592409 2022-May-01 09:00 0.65715214466506 -28.2956432 2022-May-01 12:00 0.65512941458881 -27.7341371 2022-May-01 15:00 0.65314715309664 -27.1747752 2022-May-01 18:00 0.65120520338081 -26.6176080 2022-May-01 21:00 0.64930340504269 -26.0626845 2022-May-02 00:00 0.64744159421668 -25.5100518 2022-May-02 03:00 0.64561960368762 -24.9597556 2022-May-02 06:00 0.64383726300154 -24.4118400 2022-May-02 09:00 0.64209439857050 -23.8663478 2022-May-02 12:00 0.64039083377201 -23.3233203 2022-May-02 15:00 0.63872638904304 -22.7827977 2022-May-02 18:00 0.63710088196950 -22.2448189 2022-May-02 21:00 0.63551412737110 -21.7094215 2022-May-03 00:00 0.63396593738201 -21.1766424 2022-May-03 03:00 0.63245612152805 -20.6465172 2022-May-03 06:00 0.63098448680017 -20.1190804 2022-May-03 09:00 0.62955083772487 -19.5943657 2022-May-03 12:00 0.62815497643171 -19.0724060 2022-May-03 15:00 0.62679670271833 -18.5532332 2022-May-03 18:00 0.62547581411290 -18.0368781 2022-May-03 21:00 0.62419210593477 -17.5233711 2022-May-04 00:00 0.62294537135299 -17.0127416 2022-May-04 03:00 0.62173540144336 -16.5050182 2022-May-04 06:00 0.62056198524391 -16.0002287 2022-May-04 09:00 0.61942490980920 -15.4984004 2022-May-04 12:00 0.61832396026351 -14.9995595 2022-May-04 15:00 0.61725891985314 -14.5037318 2022-May-04 18:00 0.61622956999788 -14.0109422 2022-May-04 21:00 0.61523569034192 -13.5212151 2022-May-05 00:00 0.61427705880430 -13.0345739 2022-May-05 03:00 0.61335345162890 -12.5510416 2022-May-05 06:00 0.61246464343423 -12.0706404 2022-May-05 09:00 0.61161040726303 -11.5933918 2022-May-05 12:00 0.61079051463181 -11.1193165 2022-May-05 15:00 0.61000473558037 -10.6484348 2022-May-05 18:00 0.60925283872143 -10.1807661 2022-May-05 21:00 0.60853459129035 -9.7163291 2022-May-06 00:00 0.60784975919504 -9.2551419 2022-May-06 03:00 0.60719810706612 -8.7972219 2022-May-06 06:00 0.60657939830735 -8.3425858 2022-May-06 09:00 0.60599339514629 -7.8912495 2022-May-06 12:00 0.60543985868539 -7.4432282 2022-May-06 15:00 0.60491854895330 -6.9985366 2022-May-06 18:00 0.60442922495658 -6.5571885 2022-May-06 21:00 0.60397164473175 -6.1191968 2022-May-07 00:00 0.60354556539768 -5.6845741 2022-May-07 03:00 0.60315074320830 -5.2533320 2022-May-07 06:00 0.60278693360566 -4.8254813 2022-May-07 09:00 0.60245389127332 -4.4010323 2022-May-07 12:00 0.60215137018995 -3.9799943 2022-May-07 15:00 0.60187912368331 -3.5623760 2022-May-07 18:00 0.60163690448434 -3.1481854 2022-May-07 21:00 0.60142446478161 -2.7374295 2022-May-08 00:00 0.60124155627579 -2.3301149 2022-May-08 03:00 0.60108793023441 -1.9262471 2022-May-08 06:00 0.60096333754659 -1.5258310 2022-May-08 09:00 0.60086752877794 -1.1288708 2022-May-08 12:00 0.60080025422544 -0.7353698 2022-May-08 15:00 0.60076126397228 -0.3453307 2022-May-08 18:00 0.60075030794268 0.0412447 2022-May-08 21:00 0.60076713595659 0.4243554 2022-May-09 00:00 0.60081149778422 0.8040009 2022-May-09 03:00 0.60088314320038 1.1801818 2022-May-09 06:00 0.60098182203861 1.5528990 2022-May-09 09:00 0.60110728424500 1.9221547 2022-May-09 12:00 0.60125927993162 2.2879514 2022-May-09 15:00 0.60143755942965 2.6502924 2022-May-09 18:00 0.60164187334209 3.0091819 2022-May-09 21:00 0.60187197259590 3.3646247 2022-May-10 00:00 0.60212760849372 3.7166264 2022-May-10 03:00 0.60240853276503 4.0651932 2022-May-10 06:00 0.60271449761666 4.4103319 2022-May-10 09:00 0.60304525578270 4.7520503 2022-May-10 12:00 0.60340056057371 5.0903567 2022-May-10 15:00 0.60378016592525 5.4252599 2022-May-10 18:00 0.60418382644564 5.7567697 2022-May-10 21:00 0.60461129746290 6.0848963 2022-May-11 00:00 0.60506233507094 6.4096506 2022-May-11 03:00 0.60553669617482 6.7310441 2022-May-11 06:00 0.60603413853519 7.0490890 2022-May-11 09:00 0.60655442081182 7.3637979 2022-May-11 12:00 0.60709730260609 7.6751843 2022-May-11 15:00 0.60766254450269 7.9832620 2022-May-11 18:00 0.60824990811021 8.2880453 2022-May-11 21:00 0.60885915610072 8.5895494 2022-May-12 00:00 0.60949005224842 8.8877897 2022-May-12 03:00 0.61014236146714 9.1827823 2022-May-12 06:00 0.61081584984687 9.4745436 2022-May-12 09:00 0.61151028468915 9.7630906 2022-May-12 12:00 0.61222543454143 10.0484409 2022-May-12 15:00 0.61296106923027 10.3306124 2022-May-12 18:00 0.61371695989352 10.6096233 2022-May-12 21:00 0.61449287901131 10.8854926 2022-May-13 00:00 0.61528860043597 11.1582394 2022-May-13 03:00 0.61610389942083 11.4278833 2022-May-13 06:00 0.61693855264792 11.6944442 2022-May-13 09:00 0.61779233825446 11.9579425 2022-May-13 12:00 0.61866503585834 12.2183988 2022-May-13 15:00 0.61955642658243 12.4758342 2022-May-13 18:00 0.62046629307783 12.7302699 2022-May-13 21:00 0.62139441954587 12.9817275 2022-May-14 00:00 0.62234059175925 13.2302290 2022-May-14 03:00 0.62330459708191 13.4757965 2022-May-14 06:00 0.62428622448784 13.7184523 2022-May-14 09:00 0.62528526457891 13.9582193 2022-May-14 12:00 0.62630150960159 14.1951202 2022-May-14 15:00 0.62733475346265 14.4291781 2022-May-14 18:00 0.62838479174377 14.6604163 2022-May-14 21:00 0.62945142171528 14.8888584 2022-May-15 00:00 0.63053444234874 15.1145278 2022-May-15 03:00 0.63163365432868 15.3374485 2022-May-15 06:00 0.63274886006335 15.5576443 2022-May-15 09:00 0.63387986369443 15.7751393 2022-May-15 12:00 0.63502647110599 15.9899578 2022-May-15 15:00 0.63618848993242 16.2021239 2022-May-15 18:00 0.63736572956558 16.4116621 2022-May-15 21:00 0.63855800116095 16.6185968 2022-May-16 00:00 0.63976511764315 16.8229526 2022-May-16 03:00 0.64098689371044 17.0247540 2022-May-16 06:00 0.64222314583858 17.2240256 2022-May-16 09:00 0.64347369228381 17.4207923 2022-May-16 12:00 0.64473835308517 17.6150785 2022-May-16 15:00 0.64601695006604 17.8069092 2022-May-16 18:00 0.64730930683496 17.9963089 2022-May-16 21:00 0.64861524878585 18.1833024 2022-May-17 00:00 0.64993460309742 18.3679144 2022-May-17 03:00 0.65126719873210 18.5501697 2022-May-17 06:00 0.65261286643426 18.7300928 2022-May-17 09:00 0.65397143872784 18.9077084 2022-May-17 12:00 0.65534274991337 19.0830410 2022-May-17 15:00 0.65672663606452 19.2561153 2022-May-17 18:00 0.65812293502404 19.4269556 2022-May-17 21:00 0.65953148639915 19.5955864 2022-May-18 00:00 0.66095213155652 19.7620320 2022-May-18 03:00 0.66238471361666 19.9263167 2022-May-18 06:00 0.66382907744794 20.0884645 2022-May-18 09:00 0.66528506966013 20.2484996 2022-May-18 12:00 0.66675253859740 20.4064460 2022-May-18 15:00 0.66823133433113 20.5623275 2022-May-18 18:00 0.66972130865201 20.7161678 2022-May-18 21:00 0.67122231506214 20.8679907 2022-May-19 00:00 0.67273420876635 21.0178196 2022-May-19 03:00 0.67425684666351 21.1656779 2022-May-19 06:00 0.67579008733724 21.3115889 2022-May-19 09:00 0.67733379104653 21.4555758 2022-May-19 12:00 0.67888781971581 21.5976615 2022-May-19 15:00 0.68045203692492 21.7378689 2022-May-19 18:00 0.68202630789864 21.8762207 2022-May-19 21:00 0.68361049949608 22.0127394 2022-May-20 00:00 0.68520448019971 22.1474476 $$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. 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. 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/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF COMMAND = '2021 O3' QUANTITIES = '20' START_TIME = '2022-05-01' STEP_SIZE = '3 hours' STOP_TIME = '2022-05-20'