******************************************************************************* JPL/HORIZONS Tsuchinshan-ATLAS (C/2023 A3) 2024-May-10 14:26:55 Rec #:90004764 (+COV) Soln.date: 2024-May-07_13:42:21 # obs: 3636 (2022-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460206.5 ! 2023-Sep-19.0000000 (TDB) RMSW= n.a. EC= 1.000158255391203 QR= .3914560488511746 TP= 2460581.2149111484 OM= 21.5559886737939 W= 308.482210954134 IN= 139.1204584787319 A= -2473.571648179435 MA= -.003002052671279059ADIST= 9.999999E99 PER= 9.999999E99 N= 8.012000000000001E-6 ANGMOM= .015221418 DAN= .48261 DDN= 2.07339 L= 65.1214373 B= -30.8185357 MOID= .27477399 TP= 2024-Sep-27.7149111484 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.9 M2= 9.2 k1= 7.5 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#43, data arc: 2022-04-09 to 2024-05-07 2: k1=7.5, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 10 14:26:56 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Tsuchinshan-ATLAS (C/2023 A3) {source: JPL#43} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2024-Sep-27 00:00:00.0000 UT Stop time : A.D. 2024-Sep-30 00:00:00.0000 UT Step-size : 120 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 0.0, 0.0, -695700.0 {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 : IAU_SUN {East-longitude positive} Center radii : 695700.0, 695700.0, 695700.0 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : None 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.240509.p240802 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-09. PREDICTS-> 2024-AUG-01 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 n.a. , 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= 2460206.5 ! 2023-Sep-19.0000000 (TDB) RMSW= n.a. EC= 1.000158255391203 QR= .3914560488511746 TP= 2460581.2149111484 OM= 21.5559886737939 W= 308.482210954134 IN= 139.1204584787319 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-4.165014056540569E+00 Y=-3.364495940425557E+00 Z=-1.436586682811080E-01 VX= 6.223344763677237E-03 VY= 8.447260034301851E-03 VZ=-7.271845845713178E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.9 M2= 9.2 k1= 7.5 k2= 5. PHCOF= .030 ************************************************************************************************** Date__(UT)__HR:MN r rdot VmagSn VmagOb RNG_3sigma RNGRT_3sig ************************************************************************************************** $$SOE 2024-Sep-27 00:00 0.391946056367 -2.4795311 67.2829858 67.2829858 427.1374 0.0019667 2024-Sep-27 02:00 0.391833391557 -2.2021612 67.2926578 67.2926578 419.2665 0.0019685 2024-Sep-27 04:00 0.391734083858 -1.9244913 67.3011866 67.3011866 411.7197 0.0019701 2024-Sep-27 06:00 0.391648146787 -1.6465587 67.3085698 67.3085697 404.5186 0.0019716 2024-Sep-27 08:00 0.391575592050 -1.3684013 67.3148051 67.3148051 397.6855 0.0019730 2024-Sep-27 10:00 0.391516429533 -1.0900569 67.3198908 67.3198908 391.2427 0.0019742 2024-Sep-27 12:00 0.391470667296 -0.8115635 67.3238254 67.3238254 385.2127 0.0019753 2024-Sep-27 14:00 0.391438311569 -0.5329592 67.3266078 67.3266078 379.6179 0.0019763 2024-Sep-27 16:00 0.391419366749 -0.2542821 67.3282371 67.3282371 374.4803 0.0019771 2024-Sep-27 18:00 0.391413835394 0.0244296 67.3287130 67.3287130 369.8209 0.0019778 2024-Sep-27 20:00 0.391421718225 0.3031377 67.3280352 67.3280351 365.6600 0.0019784 2024-Sep-27 22:00 0.391443014126 0.5818039 67.3262039 67.3262039 362.0164 0.0019788 2024-Sep-28 00:00 0.391477720140 0.8603902 67.3232198 67.3232197 358.9070 0.0019791 2024-Sep-28 02:00 0.391525831474 1.1388584 67.3190836 67.3190835 356.3468 0.0019793 2024-Sep-28 04:00 0.391587341505 1.4171704 67.3137965 67.3137965 354.3485 0.0019793 2024-Sep-28 06:00 0.391662241777 1.6952883 67.3073602 67.3073602 352.9218 0.0019792 2024-Sep-28 08:00 0.391750522011 1.9731743 67.2997765 67.2997764 352.0738 0.0019790 2024-Sep-28 10:00 0.391852170109 2.2507905 67.2910475 67.2910475 351.8083 0.0019786 2024-Sep-28 12:00 0.391967172164 2.5280995 67.2811759 67.2811759 352.1261 0.0019781 2024-Sep-28 14:00 0.392095512465 2.8050640 67.2701644 67.2701644 353.0246 0.0019774 2024-Sep-28 16:00 0.392237173507 3.0816466 67.2580163 67.2580163 354.4983 0.0019767 2024-Sep-28 18:00 0.392392136003 3.3578106 67.2447351 67.2447350 356.5383 0.0019757 2024-Sep-28 20:00 0.392560378894 3.6335193 67.2303245 67.2303245 359.1333 0.0019747 2024-Sep-28 22:00 0.392741879362 3.9087361 67.2147888 67.2147887 362.2692 0.0019735 2024-Sep-29 00:00 0.392936612843 4.1834250 67.1981323 67.1981323 365.9297 0.0019722 2024-Sep-29 02:00 0.393144553043 4.4575502 67.1803598 67.1803598 370.0966 0.0019708 2024-Sep-29 04:00 0.393365671949 4.7310761 67.1614765 67.1614764 374.7501 0.0019692 2024-Sep-29 06:00 0.393599939851 5.0039676 67.1414875 67.1414875 379.8693 0.0019675 2024-Sep-29 08:00 0.393847325356 5.2761900 67.1203987 67.1203987 385.4321 0.0019657 2024-Sep-29 10:00 0.394107795404 5.5477088 67.0982159 67.0982159 391.4162 0.0019637 2024-Sep-29 12:00 0.394381315294 5.8184901 67.0749454 67.0749454 397.7988 0.0019617 2024-Sep-29 14:00 0.394667848695 6.0885003 67.0505936 67.0505936 404.5572 0.0019595 2024-Sep-29 16:00 0.394967357673 6.3577062 67.0251675 67.0251675 411.6688 0.0019571 2024-Sep-29 18:00 0.395279802711 6.6260752 66.9986739 66.9986739 419.1113 0.0019547 2024-Sep-29 20:00 0.395605142729 6.8935750 66.9711203 66.9711203 426.8632 0.0019521 2024-Sep-29 22:00 0.395943335109 7.1601739 66.9425142 66.9425142 434.9034 0.0019494 2024-Sep-30 00:00 0.396294335718 7.4258408 66.9128634 66.9128634 443.2117 0.0019466 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. '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 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, 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 = '2023 A3' START_TIME = '2024-Sep-27' STOP_TIME = '2024-Sep-30' STEP_SIZE = '2 hours' QUANTITIES = '19,22,39' CENTER = '@Sun'