******************************************************************************* JPL/HORIZONS Maury-Attard (C/2021 J1) 2024-May-03 08:49:48 Rec #:90004661 (+COV) Soln.date: 2022-Feb-03_20:43:07 # obs: 106 (124 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459331.5 ! 2021-Apr-27.0000000 (TDB) RMSW= n.a. EC= .9343837573557028 QR= 1.740633722734237 TP= 2459264.9856104227 OM= 88.32021481608461 W= 147.3297784043173 IN= 92.71932216790499 A= 26.52748241270285 MA= .479816999705728 ADIST= 51.31433110267145 PER= 136.63194640858 N= .007213732 ANGMOM= .031565048 DAN= 15.7749 DDN= 1.88466 L= 270.0628014 B= 32.6288581 MOID= .82639498 TP= 2021-Feb-19.4856104227 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 17.1 M2= n.a. k1= 5.25 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#4, data arc: 2021-02-03 to 2021-06-07 2: k1=5.25; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 3 08:49:48 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Maury-Attard (C/2021 J1) {source: JPL#4} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2145-Jan-01 00:00:00.0000 UT Stop time : A.D. 2165-Jan-01 00:00:00.0000 UT Step-size : 3 calendar months ******************************************************************************* 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.240502.p240726 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-02. PREDICTS-> 2024-JUL-25 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= 2459331.5 ! 2021-Apr-27.0000000 (TDB) RMSW= n.a. EC= .9343837573557028 QR= 1.740633722734237 TP= 2459264.9856104227 OM= 88.32021481608461 W= 147.3297784043173 IN= 92.71932216790499 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-6.331624267318650E-02 Y=-1.705069198491022E+00 Z=-8.987668967569424E-01 VX=-9.106994650974683E-04 VY= 2.982056303888914E-03 VZ=-1.691179512483258E-02 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 17.1 M2= n.a. k1= 5.25 k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot RNG_3sigma RNGRT_3sig ************************************************************************* $$SOE 2145-Jan-01 00:00 20.43360706114 -6.7667694 96471868.5 0.1960976 2145-Apr-01 00:00 20.07939567823 -6.8622271 97768652.7 0.2032954 2145-Jul-01 00:00 19.71614032960 -6.9612909 99124110.5 0.2110783 2145-Oct-01 00:00 19.34350777547 -7.0650053 100542610. 0.2195166 2146-Jan-01 00:00 18.96527369760 -7.1720808 102012738. 0.2285899 2146-Apr-01 00:00 18.58966309932 -7.2805183 103504274. 0.2381487 2146-Jul-01 00:00 18.20404806496 -7.3938849 105069807. 0.2485790 2146-Oct-01 00:00 17.80803627518 -7.5125686 106715488. 0.2599989 2147-Jan-01 00:00 17.40558284606 -7.6363521 108429232. 0.2724078 2147-Apr-01 00:00 17.00539500993 -7.7619461 110176691. 0.2856265 2147-Jul-01 00:00 16.59399002678 -7.8942053 112020639. 0.3002216 2147-Oct-01 00:00 16.17084216934 -8.0337670 113970172. 0.3164074 2148-Jan-01 00:00 15.74011356587 -8.1797597 116012928. 0.3342403 2148-Apr-01 00:00 15.30624649277 -8.3313086 118133446. 0.3537453 2148-Jul-01 00:00 14.86423215696 -8.4898986 120362658. 0.3753997 2148-Oct-01 00:00 14.40866422972 -8.6589389 122737598. 0.3998402 2149-Jan-01 00:00 13.94386268143 -8.8374478 125246840. 0.4272929 2149-Apr-01 00:00 13.47973367158 -9.0220246 127845259. 0.4576027 2149-Jul-01 00:00 13.00039840730 -9.2200094 130633064. 0.4924007 2149-Oct-01 00:00 12.50489092220 -9.4328164 133634672. 0.5327063 2150-Jan-01 00:00 11.99768345824 -9.6607405 136843183. 0.5793082 2150-Apr-01 00:00 11.48937112968 -9.8995846 140207960. 0.6323838 2150-Jul-01 00:00 10.96232881765 -10.1591157 143867431. 0.6952843 2150-Oct-01 00:00 10.41507583602 -10.4426911 147864683. 0.7705383 2151-Jan-01 00:00 9.852140185144 -10.7499237 152201266. 0.8609843 2151-Apr-01 00:00 9.284962854092 -11.0771725 156819929. 0.9692956 2151-Jul-01 00:00 8.693404724261 -11.4386383 161928386. 1.1059120 2151-Oct-01 00:00 8.075085380565 -11.8409736 167613980. 1.2822941 2152-Jan-01 00:00 7.434260925293 -12.2865553 173906478. 1.5136756 2152-Apr-01 00:00 6.775871728280 -12.7751585 180811793. 1.8231138 2152-Jul-01 00:00 6.090435892384 -13.3161406 188457104. 2.2577524 2152-Oct-01 00:00 5.367182966794 -13.9135886 196906143. 2.9086583 2153-Jan-01 00:00 4.611303174712 -14.5359263 205709558. 3.9420601 2153-Apr-01 00:00 3.841143666106 -15.0652150 213207289. 5.6832504 2153-Jul-01 00:00 3.043770254997 -15.1307578 214169321. 9.0535307 2153-Oct-01 00:00 2.275774015554 -13.1639913 186414794. 16.1999100 2154-Jan-01 00:00 1.765076347136 -4.4445068 63143190.3 26.9422641 2154-Apr-01 00:00 1.891922666615 8.6990245 122844641. 23.4670080 2154-Jul-01 00:00 2.529702366777 14.2897703 202040297. 13.1378967 2154-Oct-01 00:00 3.323599515236 15.2160179 215199569. 7.6191092 2155-Jan-01 00:00 4.125941473824 14.8973320 210705461. 4.9497193 2155-Apr-01 00:00 4.885582818730 14.3173930 202496930. 3.5345314 2155-Jul-01 00:00 5.621821179502 13.7040833 193803606. 2.6729771 2155-Oct-01 00:00 6.334264620637 13.1221047 185544729. 2.1085676 2156-Jan-01 00:00 7.017174386856 12.5929133 178026588. 1.7207700 2156-Apr-01 00:00 7.666363472926 12.1204098 171306401. 1.4439833 2156-Jul-01 00:00 8.291944319887 11.6935055 165226890. 1.2363821 2156-Oct-01 00:00 8.902689372488 11.3023272 159648978. 1.0744475 2157-Jan-01 00:00 9.493606240863 10.9462643 154564731. 0.9465764 2157-Apr-01 00:00 10.05416030011 10.6273439 150003718. 0.8455247 2157-Jul-01 00:00 10.60477560876 10.3305211 145751769. 0.7614645 2157-Oct-01 00:00 11.14620588943 10.0533840 141773431. 0.6906673 2158-Jan-01 00:00 11.67345551929 9.7962600 138076804. 0.6309878 2158-Apr-01 00:00 12.17648249059 9.5619319 134700328. 0.5811370 2158-Jul-01 00:00 12.67312694153 9.3403764 131499850. 0.5376412 2158-Oct-01 00:00 13.16376682086 9.1302735 128458341. 0.4994290 2159-Jan-01 00:00 13.64358459125 8.9327596 125591205. 0.4659904 2159-Apr-01 00:00 14.10310522579 8.7503607 122937858. 0.4371264 2159-Jul-01 00:00 14.55835949235 8.5760080 120392403. 0.4111970 2159-Oct-01 00:00 15.00955144825 8.4089404 117946203. 0.3878056 2160-Jan-01 00:00 15.45208938556 8.2501701 115616139. 0.3668381 2160-Apr-01 00:00 15.88172420743 8.1008086 113415561. 0.3481488 2160-Jul-01 00:00 16.30369236802 7.9583023 111309768. 0.3312249 2160-Oct-01 00:00 16.72285978514 7.8207882 109269258. 0.3156783 2161-Jan-01 00:00 17.13488026633 7.6891303 107310556. 0.3015075 2161-Apr-01 00:00 17.53131385449 7.5656537 105467440. 0.2888163 2161-Jul-01 00:00 17.92576525035 7.4459754 103671817. 0.2770262 2161-Oct-01 00:00 18.31828075307 7.3295586 101920905. 0.2660530 2162-Jan-01 00:00 18.70472983950 7.2175967 100230173. 0.2559280 2162-Apr-01 00:00 19.07712606656 7.1119725 98630428.4 0.2467576 2162-Jul-01 00:00 19.44817706093 7.0089764 97063794.1 0.2381490 2162-Oct-01 00:00 19.81790270979 6.9084893 95528607.1 0.2300574 2163-Jan-01 00:00 20.18237186420 6.8110949 94039199.2 0.2225215 2163-Apr-01 00:00 20.53399307738 6.7189826 92623705.0 0.2156370 2163-Jul-01 00:00 20.88472948537 6.6286626 91231747.5 0.2091219 2163-Oct-01 00:00 21.23456600759 6.5400605 89862243.4 0.2029509 2164-Jan-01 00:00 21.57976418062 6.4539676 88528492.0 0.1971616 2164-Apr-01 00:00 21.91676711548 6.3710110 87242381.8 0.1917792 2164-Jul-01 00:00 22.24947489690 6.2904908 85987413.0 0.1867108 2164-Oct-01 00:00 22.58159072734 6.2110186 84748598.3 0.1818805 2165-Jan-01 00:00 22.90953338223 6.1334636 83538251.4 0.1773224 $$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 '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 = '2021 J1' START_TIME = '2145-01-01' STOP_TIME = '2165-01-01' STEP_SIZE = '3 months' QUANTITIES = '19,39' CENTER = '@Sun'