******************************************************************************* JPL/HORIZONS 57P/duToit-Neujmin-Delporte 2024-May-01 19:12:53 Rec #:90000632 Soln.date: - # obs: 175 (1983-2002) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2450160.5 ! 1996-Mar-18.0000000 (TDB) RMSW= n.a. EC= .500772 QR= 1.719691 TP= 2450148.2037999998 OM= 188.9878 W= 115.2118 IN= 2.8459 A= 3.444700617753812 MA= 1.895604661195965 ADIST= 5.169710235507624 PER= 6.3934522603147 N= .154161827 ANGMOM= .027635289 DAN= 3.28067 DDN= 2.12712 L= 304.2268605 B= 2.5746054 TP= 1996-Mar-05.7037999998 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 15.8 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= SAO/1996 2: k1=4.5;non-gravs. considered; 2008 SAO Comet Catalog ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed May 1 19:12:53 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 57P/duToit-Neujmin-Delporte {source: SAO/199620} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2028-Mar-01 00:00:00.0000 UT Stop time : A.D. 2028-Mar-05 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.240501.p240725 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-01. PREDICTS-> 2024-JUL-24 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= 2450160.5 ! 1996-Mar-18.0000000 (TDB) RMSW= n.a. EC= .500772 QR= 1.719691 TP= 2450148.2037999998 OM= 188.9878 W= 115.2118 IN= 2.8459 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.125265467548930E+00 Y=-1.224776170484509E+00 Z=-4.517267502536619E-01 VX= 1.254544345843835E-02 VY= 9.328763626666313E-03 VZ= 3.615685619589530E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 15.8 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2028-Mar-01 00:00 1.707578291685 -0.2166275 2028-Mar-01 03:00 1.707563051106 -0.2055792 2028-Mar-01 06:00 1.707548608174 -0.1945304 2028-Mar-01 09:00 1.707534962925 -0.1834812 2028-Mar-01 12:00 1.707522115389 -0.1724315 2028-Mar-01 15:00 1.707510065597 -0.1613814 2028-Mar-01 18:00 1.707498813578 -0.1503310 2028-Mar-01 21:00 1.707488359358 -0.1392802 2028-Mar-02 00:00 1.707478702961 -0.1282291 2028-Mar-02 03:00 1.707469844410 -0.1171776 2028-Mar-02 06:00 1.707461783725 -0.1061259 2028-Mar-02 09:00 1.707454520927 -0.0950740 2028-Mar-02 12:00 1.707448056031 -0.0840218 2028-Mar-02 15:00 1.707442389054 -0.0729694 2028-Mar-02 18:00 1.707437520008 -0.0619168 2028-Mar-02 21:00 1.707433448905 -0.0508641 2028-Mar-03 00:00 1.707430175755 -0.0398113 2028-Mar-03 03:00 1.707427700566 -0.0287584 2028-Mar-03 06:00 1.707426023343 -0.0177054 2028-Mar-03 09:00 1.707425144091 -0.0066524 2028-Mar-03 12:00 1.707425062811 0.0044007 2028-Mar-03 15:00 1.707425779505 0.0154537 2028-Mar-03 18:00 1.707427294171 0.0265067 2028-Mar-03 21:00 1.707429606805 0.0375597 2028-Mar-04 00:00 1.707432717402 0.0486126 2028-Mar-04 03:00 1.707436625955 0.0596653 2028-Mar-04 06:00 1.707441332456 0.0707179 2028-Mar-04 09:00 1.707446836892 0.0817704 2028-Mar-04 12:00 1.707453139253 0.0928227 2028-Mar-04 15:00 1.707460239523 0.1038747 2028-Mar-04 18:00 1.707468137686 0.1149266 2028-Mar-04 21:00 1.707476833724 0.1259781 2028-Mar-05 00:00 1.707486327616 0.1370294 $$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 = '90000632' START_TIME = '2028-Mar-01' STOP_TIME = '2028-Mar-05' STEP_SIZE = '3 hours' QUANTITIES = '19'