******************************************************************************* JPL/HORIZONS Tsuchinshan-ATLAS (C/2023 A3) 2024-May-31 18:28:07 Rec #:90004764 (+COV) Soln.date: 2024-May-30_01:12:17 # obs: 4135 (2022-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460235.5 ! 2023-Oct-18.0000000 (TDB) RMSW= n.a. EC= 1.000151075215354 QR= .3914694684576216 TP= 2460581.2212598808 OM= 21.55644004151601 W= 308.4826967791557 IN= 139.1196192339399 A= -2591.222309631923 MA= -.00258328992184759 ADIST= 9.999999E99 PER= 9.999999E99 N= 7.472E-6 ANGMOM= .015221652 DAN= .48263 DDN= 2.07347 L= 65.1210279 B= -30.8188837 MOID= .27480701 TP= 2024-Sep-27.7212598808 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7.8 M2= n.a. k1= 6.25 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#45, data arc: 2022-04-09 to 2024-05-29 2: k1=6.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 31 18:28:07 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Tsuchinshan-ATLAS (C/2023 A3) {source: JPL#45} 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.240531.p240824 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-31. PREDICTS-> 2024-AUG-23 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= 2460235.5 ! 2023-Oct-18.0000000 (TDB) RMSW= n.a. EC= 1.000151075215354 QR= .3914694684576216 TP= 2460581.2212598808 OM= 21.55644004151601 W= 308.4826967791557 IN= 139.1196192339399 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-3.981020675785023E+00 Y=-3.116713686106669E+00 Z=-1.646180815575506E-01 VX= 6.470831014118541E-03 VY= 8.644115310783353E-03 VZ=-7.178539165787544E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7.8 M2= n.a. k1= 6.25 k2= n.a. PHCOF= n.a. ************************************************************************************************** Date__(UT)__HR:MN r rdot VmagSn VmagOb RNG_3sigma RNGRT_3sig ************************************************************************************************** $$SOE 2024-Sep-27 00:00 0.391941977328 -2.4757003 67.2833475 67.2833475 378.8191 0.0012033 2024-Sep-27 02:00 0.391829497087 -2.1983225 67.2930038 67.2930038 375.0234 0.0012047 2024-Sep-27 04:00 0.391730374331 -1.9206449 67.3015168 67.3015168 371.3704 0.0012060 2024-Sep-27 06:00 0.391644622552 -1.6427054 67.3088842 67.3088841 367.8659 0.0012072 2024-Sep-27 08:00 0.391572253432 -1.3645414 67.3151036 67.3151036 364.5158 0.0012084 2024-Sep-27 10:00 0.391513276831 -1.0861911 67.3201734 67.3201734 361.3259 0.0012094 2024-Sep-27 12:00 0.391467700785 -0.8076923 67.3240921 67.3240920 358.3018 0.0012104 2024-Sep-27 14:00 0.391435531498 -0.5290830 67.3268584 67.3268584 355.4490 0.0012113 2024-Sep-27 16:00 0.391416773341 -0.2504016 67.3284718 67.3284717 352.7729 0.0012121 2024-Sep-27 18:00 0.391411428848 0.0283140 67.3289315 67.3289315 350.2786 0.0012128 2024-Sep-27 20:00 0.391419498713 0.3070254 67.3282376 67.3282376 347.9711 0.0012135 2024-Sep-27 22:00 0.391440981795 0.5856944 67.3263903 67.3263902 345.8549 0.0012141 2024-Sep-28 00:00 0.391475875110 0.8642830 67.3233900 67.3233899 343.9343 0.0012146 2024-Sep-28 02:00 0.391524173842 1.1427529 67.3192376 67.3192376 342.2133 0.0012150 2024-Sep-28 04:00 0.391585871339 1.4210661 67.3139345 67.3139344 340.6955 0.0012153 2024-Sep-28 06:00 0.391660959121 1.6991847 67.3074820 67.3074820 339.3839 0.0012155 2024-Sep-28 08:00 0.391749426884 1.9770707 67.2998821 67.2998821 338.2814 0.0012157 2024-Sep-28 10:00 0.391851262503 2.2546865 67.2911370 67.2911370 337.3900 0.0012158 2024-Sep-28 12:00 0.391966452047 2.5319946 67.2812493 67.2812492 336.7117 0.0012158 2024-Sep-28 14:00 0.392094979777 2.8089576 67.2702217 67.2702217 336.2477 0.0012157 2024-Sep-28 16:00 0.392236828164 3.0855382 67.2580575 67.2580575 335.9986 0.0012156 2024-Sep-28 18:00 0.392391977895 3.3616997 67.2447602 67.2447602 335.9647 0.0012153 2024-Sep-28 20:00 0.392560407887 3.6374053 67.2303336 67.2303336 336.1456 0.0012150 2024-Sep-28 22:00 0.392742095296 3.9126185 67.2147819 67.2147818 336.5405 0.0012146 2024-Sep-29 00:00 0.392937015533 4.1873033 67.1981094 67.1981094 337.1481 0.0012142 2024-Sep-29 02:00 0.393145142279 4.4614239 67.1803211 67.1803211 337.9663 0.0012136 2024-Sep-29 04:00 0.393366447496 4.7349447 67.1614219 67.1614218 338.9930 0.0012130 2024-Sep-29 06:00 0.393600901451 5.0078306 67.1414171 67.1414171 340.2251 0.0012123 2024-Sep-29 08:00 0.393848472724 5.2800468 67.1203125 67.1203125 341.6595 0.0012115 2024-Sep-29 10:00 0.394109128234 5.5515590 67.0981141 67.0981140 343.2925 0.0012106 2024-Sep-29 12:00 0.394382833254 5.8223332 67.0748279 67.0748279 345.1200 0.0012097 2024-Sep-29 14:00 0.394669551430 6.0923357 67.0504606 67.0504606 347.1376 0.0012087 2024-Sep-29 16:00 0.394969244805 6.3615336 67.0250190 67.0250190 349.3405 0.0012076 2024-Sep-29 18:00 0.395281873837 6.6298939 66.9985100 66.9985100 351.7237 0.0012064 2024-Sep-29 20:00 0.395607397426 6.8973847 66.9709411 66.9709411 354.2821 0.0012052 2024-Sep-29 22:00 0.395945772929 7.1639742 66.9423198 66.9423197 357.0102 0.0012039 2024-Sep-30 00:00 0.396296956193 7.4296310 66.9126539 66.9126538 359.9023 0.0012025 $$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 CENTER = '@Sun' COMMAND = '2023 A3' QUANTITIES = '19,22,39' START_TIME = '2024-Sep-27' STEP_SIZE = '2 hours' STOP_TIME = '2024-Sep-30'