******************************************************************************* JPL/HORIZONS 60P/Tsuchinshan 2 2024-May-09 02:12:04 Rec #:90000652 Soln.date: - # obs: 55 (1965-1998) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2443760.5 ! 1978-Sep-09.0000000 (TDB) RMSW= n.a. EC= .504145 QR= 1.784581 TP= 2443772.4926999998 OM= 288.3888 W= 203.1301 IN= 6.7176 A= 3.598997690857206 MA= 358.2687942267237 ADIST= 5.413414381714412 PER= 6.8277962740572 N= .144354964 ANGMOM= .028183468 DAN= 5.00441 DDN= 1.83399 L= 131.3766548 B= -2.6336955 TP= 1978-Sep-20.9926999998 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 9.3 M2= 15.2 k1= 25. k2= 5. PHCOF= .030 COMET comments 1: soln ref.= SAO/1978 2: k1=25., k2=5., phase coef.=0.03;non-gravs. considered; 2008 SAO Comet Catalog ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 9 02:12:04 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 60P/Tsuchinshan 2 {source: SAO/197820} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2025-Jul-17 00:00:00.0000 UT Stop time : A.D. 2025-Jul-23 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.240508.p240801 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-08. PREDICTS-> 2024-JUL-31 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= 2443760.5 ! 1978-Sep-09.0000000 (TDB) RMSW= n.a. EC= .504145 QR= 1.784581 TP= 2443772.4926999998 OM= 288.3888 W= 203.1301 IN= 6.7176 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.033468567110315E+00 Y= 1.361827065856013E+00 Z= 5.235596475227154E-01 VX=-1.241973727528051E-02 VY=-8.082565354017046E-03 VZ=-5.404612570041525E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 9.3 M2= 15.2 k1= 25. k2= 5. PHCOF= .030 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2025-Jul-17 00:00 1.646018416521 -0.3579484 2025-Jul-17 03:00 1.645993030248 -0.3453364 2025-Jul-17 06:00 1.645968554513 -0.3327235 2025-Jul-17 09:00 1.645944989381 -0.3201097 2025-Jul-17 12:00 1.645922334915 -0.3074950 2025-Jul-17 15:00 1.645900591176 -0.2948795 2025-Jul-17 18:00 1.645879758221 -0.2822632 2025-Jul-17 21:00 1.645859836106 -0.2696462 2025-Jul-18 00:00 1.645840824885 -0.2570284 2025-Jul-18 03:00 1.645822724607 -0.2444100 2025-Jul-18 06:00 1.645805535321 -0.2317909 2025-Jul-18 09:00 1.645789257073 -0.2191712 2025-Jul-18 12:00 1.645773889905 -0.2065509 2025-Jul-18 15:00 1.645759433859 -0.1939301 2025-Jul-18 18:00 1.645745888972 -0.1813088 2025-Jul-18 21:00 1.645733255281 -0.1686869 2025-Jul-19 00:00 1.645721532820 -0.1560647 2025-Jul-19 03:00 1.645710721618 -0.1434420 2025-Jul-19 06:00 1.645700821705 -0.1308189 2025-Jul-19 09:00 1.645691833107 -0.1181955 2025-Jul-19 12:00 1.645683755847 -0.1055718 2025-Jul-19 15:00 1.645676589946 -0.0929478 2025-Jul-19 18:00 1.645670335422 -0.0803235 2025-Jul-19 21:00 1.645664992293 -0.0676991 2025-Jul-20 00:00 1.645660560572 -0.0550745 2025-Jul-20 03:00 1.645657040270 -0.0424497 2025-Jul-20 06:00 1.645654431396 -0.0298249 2025-Jul-20 09:00 1.645652733956 -0.0171999 2025-Jul-20 12:00 1.645651947955 -0.0045750 2025-Jul-20 15:00 1.645652073393 0.0080500 2025-Jul-20 18:00 1.645653110270 0.0206750 2025-Jul-20 21:00 1.645655058581 0.0332998 2025-Jul-21 00:00 1.645657918323 0.0459246 2025-Jul-21 03:00 1.645661689484 0.0585493 2025-Jul-21 06:00 1.645666372056 0.0711737 2025-Jul-21 09:00 1.645671966025 0.0837980 2025-Jul-21 12:00 1.645678471374 0.0964221 2025-Jul-21 15:00 1.645685888086 0.1090458 2025-Jul-21 18:00 1.645694216140 0.1216693 2025-Jul-21 21:00 1.645703455513 0.1342925 2025-Jul-22 00:00 1.645713606178 0.1469152 2025-Jul-22 03:00 1.645724668109 0.1595376 2025-Jul-22 06:00 1.645736641275 0.1721595 2025-Jul-22 09:00 1.645749525642 0.1847809 2025-Jul-22 12:00 1.645763321175 0.1974019 2025-Jul-22 15:00 1.645778027837 0.2100223 2025-Jul-22 18:00 1.645793645586 0.2226421 2025-Jul-22 21:00 1.645810174381 0.2352613 2025-Jul-23 00:00 1.645827614175 0.2478799 $$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 = '90000652' START_TIME = '2025-Jul-17' STOP_TIME = '2025-Jul-23' STEP_SIZE = '3 hours' QUANTITIES = '19'