******************************************************************************* JPL/HORIZONS 469219 Kamo`oalewa (2016 HO3) 2024-May-02 19:48:18 Rec #: 469219 (+COV) Soln.date: 2024-Mar-28_05:48:41 # obs: 322 (2004-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457871.5 ! 2017-Apr-28.00 (TDB) Residual RMS= .081513 EC= .1040287332682467 QR= .8969174933439372 TP= 2458029.6185367191 OM= 66.4320667959238 W= 307.0810358408148 IN= 7.775150858519338 A= 1.001056090353919 MA= 204.4037083420065 ADIST= 1.105194687363901 PER= 1.0016 N= .984048391 ANGMOM= .017117797 DAN= .9317800000000001 DDN= 1.05649 L= 13.7679653 B= -6.1959361 MOID= .0341951 TP= 2017-Oct-03.1185367191 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= .467 H= 24.33 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 0. A2= -1.363750288874E-13 A3= 0. Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 5.093 R0= 1. ASTEROID comments: 1: soln ref.= JPL#33, OCC=0 2: source=ORB; Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu May 2 19:48:18 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 469219 Kamo`oalewa (2016 HO3) {source: JPL#33} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2369-May-01 00:00:00.0000 UT Stop time : A.D. 2369-May-31 00:00:00.0000 UT Step-size : 1440 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.240502.p240726 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-02. PREDICTS-> 2024-JUL-25 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= 2457871.5 ! 2017-Apr-28.00 (TDB) Residual RMS= .081513 EC= .1040287332682467 QR= .8969174933439372 TP= 2458029.6185367191 OM= 66.4320667959238 W= 307.0810358408148 IN= 7.775150858519338 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-9.099665244445362E-01 Y=-5.901513011030828E-01 Z=-1.679288350591119E-01 VX= 9.012686118152291E-03 VY=-1.085064240119378E-02 VZ=-6.684325790984331E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= .467 H= 24.33 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 0. A2= -1.363750288874E-13 A3= 0. Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 5.093 R0= 1. ******************************************************************************* Date__(UT)__HR:MN delta deldot RNG_3sigma RNGRT_3sig ************************************************************************** $$SOE 2369-May-01 00:00 1.98439079801385 2.1072748 2402.6443 0.0011931 2369-May-02 00:00 1.98559248120488 2.0539978 2389.2326 0.0011890 2369-May-03 00:00 1.98676308274265 1.9996509 2375.8336 0.0011849 2369-May-04 00:00 1.98790201169416 1.9443356 2362.4521 0.0011810 2369-May-05 00:00 1.98900874954581 1.8882004 2349.0929 0.0011770 2369-May-06 00:00 1.99008287495991 1.8314307 2335.7606 0.0011732 2369-May-07 00:00 1.99112407964574 1.7742286 2322.4597 0.0011694 2369-May-08 00:00 1.99213217043532 1.7167862 2309.1947 0.0011656 2369-May-09 00:00 1.99310705671942 1.6592634 2295.9703 0.0011619 2369-May-10 00:00 1.99404872718238 1.6017738 2282.7913 0.0011583 2369-May-11 00:00 1.99495722257344 1.5443848 2269.6627 0.0011547 2369-May-12 00:00 1.99583261085772 1.4871252 2256.5897 0.0011512 2369-May-13 00:00 1.99667496849465 1.4299977 2243.5776 0.0011477 2369-May-14 00:00 1.99748436865237 1.3729898 2230.6319 0.0011443 2369-May-15 00:00 1.99826087516085 1.3160827 2217.7580 0.0011410 2369-May-16 00:00 1.99900454016878 1.2592553 2204.9617 0.0011377 2369-May-17 00:00 1.99971540346651 1.2024858 2192.2485 0.0011345 2369-May-18 00:00 2.00039349180564 1.1457506 2179.6241 0.0011313 2369-May-19 00:00 2.00103881703159 1.0890211 2167.0943 0.0011282 2369-May-20 00:00 2.00165137233600 1.0322605 2154.6648 0.0011252 2369-May-21 00:00 2.00223112644593 0.9754206 2142.3414 0.0011222 2369-May-22 00:00 2.00277801612282 0.9184387 2130.1297 0.0011192 2369-May-23 00:00 2.00329193792182 0.8612382 2118.0357 0.0011164 2369-May-24 00:00 2.00377274065395 0.8037312 2106.0649 0.0011135 2369-May-25 00:00 2.00422022023410 0.7458237 2094.2231 0.0011108 2369-May-26 00:00 2.00463411843709 0.6874235 2082.5156 0.0011081 2369-May-27 00:00 2.00501412654538 0.6284494 2070.9479 0.0011054 2369-May-28 00:00 2.00535989412831 0.5688397 2059.5251 0.0011028 2369-May-29 00:00 2.00567104254783 0.5085595 2048.2519 0.0011003 2369-May-30 00:00 2.00594718243180 0.4476072 2037.1328 0.0010978 2369-May-31 00:00 2.00618793422964 0.3860192 2026.1722 0.0010954 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, 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 = '469219' START_TIME = '2369-May-01' STOP_TIME = '2369-May-31' STEP_SIZE = '1 day' QUANTITIES = '20,39'