******************************************************************************* JPL/HORIZONS 1 Ceres (A801 AA) 2024-May-22 20:06:26 Rec #: 1 (+COV) Soln.date: 2021-Apr-13_11:04:44 # obs: 1075 (1995-2021) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458849.5 ! 2020-Jan-01.00 (TDB) Residual RMS= .24563 EC= .07687465013145245 QR= 2.556401146697176 TP= 2458240.1791309435 OM= 80.3011901917491 W= 73.80896808746482 IN= 10.59127767086216 A= 2.769289292143484 MA= 130.3159688200986 ADIST= 2.982177437589792 PER= 4.60851 N= .213870844 ANGMOM= .028541613 DAN= 2.69515 DDN= 2.81323 L= 153.8445987 B= 10.1666387 MOID= 1.59231997 TP= 2018-May-01.6791309435 Asteroid physical parameters (km, seconds, rotational period in hours): GM= 62.6284 RAD= 469.7 ROTPER= 9.07417 H= 3.34 G= .120 B-V= .713 ALBEDO= .090 STYP= C ASTEROID comments: 1: soln ref.= JPL#48, OCC=0 radar(60 delay, 0 Dop.) 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed May 22 20:06:26 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 1 Ceres (A801 AA) {source: JPL#48} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2022-Dec-06 00:00:00.0000 UT Stop time : A.D. 2022-Dec-08 00:00:00.0000 UT Step-size : 60 minutes ******************************************************************************* Target pole/equ : IAU {East-longitude positive} Target radii : 487.3, 487.3, 446.0 km {Equator_a, b, pole_c} 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.240522.p240815 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-22. PREDICTS-> 2024-AUG-14 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= 2458849.5 ! 2020-Jan-01.00 (TDB) Residual RMS= .24563 EC= .07687465013145245 QR= 2.556401146697176 TP= 2458240.1791309435 OM= 80.3011901917491 W= 73.80896808746482 IN= 10.59127767086216 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.007608869613381E+00 Y=-2.390064275223502E+00 Z=-1.332124522752402E+00 VX= 9.201724467227128E-03 VY= 3.370381135398406E-03 VZ=-2.850337057661093E-04 Asteroid physical parameters (km, seconds, rotational period in hours): GM= 62.6284 RAD= 469.7 ROTPER= 9.07417 H= 3.34 G= .120 B-V= .713 ALBEDO= .090 STYP= C ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2022-Dec-06 00:00 2.549094187365 -0.0043136 2022-Dec-06 01:00 2.549094086670 -0.0040545 2022-Dec-06 02:00 2.549093992211 -0.0037954 2022-Dec-06 03:00 2.549093903987 -0.0035363 2022-Dec-06 04:00 2.549093821998 -0.0032772 2022-Dec-06 05:00 2.549093746245 -0.0030182 2022-Dec-06 06:00 2.549093676727 -0.0027591 2022-Dec-06 07:00 2.549093613444 -0.0025000 2022-Dec-06 08:00 2.549093556396 -0.0022409 2022-Dec-06 09:00 2.549093505584 -0.0019818 2022-Dec-06 10:00 2.549093461008 -0.0017227 2022-Dec-06 11:00 2.549093422666 -0.0014636 2022-Dec-06 12:00 2.549093390560 -0.0012045 2022-Dec-06 13:00 2.549093364690 -0.0009454 2022-Dec-06 14:00 2.549093345055 -0.0006863 2022-Dec-06 15:00 2.549093331655 -0.0004272 2022-Dec-06 16:00 2.549093324490 -0.0001681 2022-Dec-06 17:00 2.549093323561 0.0000909 2022-Dec-06 18:00 2.549093328868 0.0003500 2022-Dec-06 19:00 2.549093340410 0.0006091 2022-Dec-06 20:00 2.549093358187 0.0008682 2022-Dec-06 21:00 2.549093382200 0.0011273 2022-Dec-06 22:00 2.549093412448 0.0013864 2022-Dec-06 23:00 2.549093448931 0.0016455 2022-Dec-07 00:00 2.549093491650 0.0019046 2022-Dec-07 01:00 2.549093540605 0.0021637 2022-Dec-07 02:00 2.549093595794 0.0024228 2022-Dec-07 03:00 2.549093657220 0.0026819 2022-Dec-07 04:00 2.549093724880 0.0029410 2022-Dec-07 05:00 2.549093798777 0.0032001 2022-Dec-07 06:00 2.549093878908 0.0034592 2022-Dec-07 07:00 2.549093965275 0.0037183 2022-Dec-07 08:00 2.549094057878 0.0039774 2022-Dec-07 09:00 2.549094156716 0.0042365 2022-Dec-07 10:00 2.549094261790 0.0044956 2022-Dec-07 11:00 2.549094373098 0.0047547 2022-Dec-07 12:00 2.549094490643 0.0050137 2022-Dec-07 13:00 2.549094614423 0.0052728 2022-Dec-07 14:00 2.549094744438 0.0055319 2022-Dec-07 15:00 2.549094880689 0.0057910 2022-Dec-07 16:00 2.549095023175 0.0060501 2022-Dec-07 17:00 2.549095171897 0.0063092 2022-Dec-07 18:00 2.549095326855 0.0065683 2022-Dec-07 19:00 2.549095488047 0.0068274 2022-Dec-07 20:00 2.549095655476 0.0070865 2022-Dec-07 21:00 2.549095829139 0.0073456 2022-Dec-07 22:00 2.549096009039 0.0076047 2022-Dec-07 23:00 2.549096195173 0.0078638 2022-Dec-08 00:00 2.549096387543 0.0081229 $$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 = 'Ceres' QUANTITIES = '19' START_TIME = '2022-Dec-06' STEP_SIZE = '1 hour' STOP_TIME = '2022-Dec-08'