API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 60P/Tsuchinshan 2 2024-May-04 23:38:58 Rec #:90000657 (+COV) Soln.date: 2021-Mar-19_11:14:14 # obs: 1406 (2005-2019) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457220.5 ! 2015-Jul-17.0000000 (TDB) RMSW= n.a. EC= .538536691475378 QR= 1.619566766899144 TP= 2456061.3892552601 OM= 267.6612927793719 W= 216.4936690753554 IN= 3.608949186300423 A= 3.509632807161156 MA= 173.7546691984959 ADIST= 5.399698847423169 PER= 6.5750751943655 N= .149903424 ANGMOM= .027154062 DAN= 4.39419 DDN= 1.73891 L= 124.1005984 B= -2.145447 MOID= .63524199 TP= 2012-May-13.8892552601 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.= JPL#K183/6, data arc: 2005-10-05 to 2019-06-23 2: k1=25., k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sat May 4 23:38:58 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 60P/Tsuchinshan 2 {source: JPL#K183/6} 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.240503.p240727 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-03. PREDICTS-> 2024-JUL-26 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= 2457220.5 ! 2015-Jul-17.0000000 (TDB) RMSW= n.a. EC= .538536691475378 QR= 1.619566766899144 TP= 2456061.3892552601 OM= 267.6612927793719 W= 216.4936690753554 IN= 3.608949186300423 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.847322682921044E+00 Y=-4.276660097505459E+00 Z=-1.645742026966185E+00 VX= 4.383632037907502E-03 VY= 2.157956787846268E-03 VZ= 1.229760340942653E-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 1.646089138829 -0.3656729 2025-Jul-17 03:00 1.646063194840 -0.3530626 2025-Jul-17 06:00 1.646038161269 -0.3404513 2025-Jul-17 09:00 1.646014038182 -0.3278391 2025-Jul-17 12:00 1.645990825643 -0.3152260 2025-Jul-17 15:00 1.645968523714 -0.3026122 2025-Jul-17 18:00 1.645947132455 -0.2899975 2025-Jul-17 21:00 1.645926651923 -0.2773820 2025-Jul-18 00:00 1.645907082173 -0.2647658 2025-Jul-18 03:00 1.645888423256 -0.2521488 2025-Jul-18 06:00 1.645870675222 -0.2395313 2025-Jul-18 09:00 1.645853838118 -0.2269130 2025-Jul-18 12:00 1.645837911990 -0.2142942 2025-Jul-18 15:00 1.645822896878 -0.2016748 2025-Jul-18 18:00 1.645808792824 -0.1890549 2025-Jul-18 21:00 1.645795599864 -0.1764344 2025-Jul-19 00:00 1.645783318034 -0.1638135 2025-Jul-19 03:00 1.645771947365 -0.1511922 2025-Jul-19 06:00 1.645761487889 -0.1385705 2025-Jul-19 09:00 1.645751939631 -0.1259484 2025-Jul-19 12:00 1.645743302618 -0.1133259 2025-Jul-19 15:00 1.645735576873 -0.1007032 2025-Jul-19 18:00 1.645728762414 -0.0880802 2025-Jul-19 21:00 1.645722859260 -0.0754570 2025-Jul-20 00:00 1.645717867427 -0.0628336 2025-Jul-20 03:00 1.645713786927 -0.0502100 2025-Jul-20 06:00 1.645710617770 -0.0375863 2025-Jul-20 09:00 1.645708359964 -0.0249625 2025-Jul-20 12:00 1.645707013514 -0.0123387 2025-Jul-20 15:00 1.645706578425 0.0002852 2025-Jul-20 18:00 1.645707054695 0.0129091 2025-Jul-20 21:00 1.645708442323 0.0255329 2025-Jul-21 00:00 1.645710741305 0.0381566 2025-Jul-21 03:00 1.645713951634 0.0507803 2025-Jul-21 06:00 1.645718073300 0.0634038 2025-Jul-21 09:00 1.645723106292 0.0760271 2025-Jul-21 12:00 1.645729050595 0.0886502 2025-Jul-21 15:00 1.645735906193 0.1012730 2025-Jul-21 18:00 1.645743673066 0.1138956 2025-Jul-21 21:00 1.645752351193 0.1265178 2025-Jul-22 00:00 1.645761940550 0.1391397 2025-Jul-22 03:00 1.645772441110 0.1517612 2025-Jul-22 06:00 1.645783852845 0.1643823 2025-Jul-22 09:00 1.645796175721 0.1770029 2025-Jul-22 12:00 1.645809409707 0.1896231 2025-Jul-22 15:00 1.645823554765 0.2022427 2025-Jul-22 18:00 1.645838610857 0.2148618 2025-Jul-22 21:00 1.645854577941 0.2274803 2025-Jul-23 00:00 1.645871455973 0.2400982 $$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 *******************************************************************************