******************************************************************************* JPL/HORIZONS C/1680 V1 (C/1680 V1) 2024-Apr-25 20:00:27 Rec #:90001534 Soln.date: - # obs: 30 (1680-1681) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2335000.5 ! 1680-Nov-29.0000000 (TDB) RMSW= n.a. EC= .999986 QR= .006222 TP= 2335019.9876000001 OM= 276.6339 W= 350.6128 IN= 60.6784 A= 444.4285714298892 MA= 359.9979499735049 ADIST= 888.8509208597784 PER= 9369.3865937998 N= .000105196 ANGMOM= .001918933 DAN= .00626 DDN= .9282899999999999 L= 272.0053992 B= -8.175705799999999 TP= 1680-Dec-18.4876000001 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= n.a. k1= n.a. k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= SAO_2008, data arc: 1680-11-14 to 1681-03-19 2: epoch may be 2335001.0 (hour ambiguous: 12h/0h); time units are UT, but set to E ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu Apr 25 20:00:27 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: C/1680 V1 (C/1680 V1) {source: SAO_200820} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2022-Jan-01 00:00:00.0000 UT Stop time : A.D. 2030-Jan-01 00:00:00.0000 UT Step-size : 1 calendar year ******************************************************************************* 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.240425.p240719 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-25. PREDICTS-> 2024-JUL-18 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= 2335000.5 ! 1680-Nov-29.0000000 (TDB) RMSW= n.a. EC= .999986 QR= .006222 TP= 2335019.9876000001 OM= 276.6339 W= 350.6128 IN= 60.6784 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-9.659371615788363E-02 Y= 7.234527519096344E-01 Z= 3.033150270998748E-01 VX= 2.152452340730176E-03 VY=-2.425098769675853E-02 VZ=-1.246463674616776E-02 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= n.a. k1= n.a. k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2022-Jan-01 00:00 258.3068766524 2.2539759 2023-Jan-01 00:00 258.7819230460 2.2524146 2024-Jan-01 00:00 259.2561949423 2.2465756 2025-Jan-01 00:00 259.7302286937 2.2381475 2026-Jan-01 00:00 260.2010389444 2.2287859 2027-Jan-01 00:00 260.6699858089 2.2205341 2028-Jan-01 00:00 261.1374234654 2.2147475 2029-Jan-01 00:00 261.6051672370 2.2113358 2030-Jan-01 00:00 262.0712340957 2.2108035 $$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 = '1680 V1' START_TIME = '2022-01-01' STOP_TIME = '2030-01-01' STEP_SIZE = '1 year' QUANTITIES = '19'