******************************************************************************* JPL/HORIZONS (2023 GQ2) 2024-May-10 07:42:55 Rec #:50656940 (+COV) Soln.date: 2023-May-01_05:54:10 # obs: 52 (2010-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459834.5 ! 2022-Sep-12.00 (TDB) Residual RMS= .13589 EC= .4017550748885984 QR= .98364028817404 TP= 2459772.887877679 OM= 53.82863491497166 W= 349.3284650756269 IN= 36.84092379786306 A= 1.644209999760336 MA= 28.80277389144205 ADIST= 2.304779711346633 PER= 2.10836 N= .467485501 ANGMOM= .02019927 DAN= .98854 DDN= 2.27832 L= 45.2526474 B= -6.3748164 MOID= 1.594E-5 TP= 2022-Jul-12.3878776790 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 19.86 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#6, PHA OCC=2 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 10 07:42:55 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2023 GQ2) {source: JPL#6} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2023-Jul-29 00:00:00.0000 UT Stop time : A.D. 2023-Aug-04 00:00:00.0000 UT Step-size : 360 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.240509.p240802 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-09. PREDICTS-> 2024-AUG-01 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= 2459834.5 ! 2022-Sep-12.00 (TDB) Residual RMS= .13589 EC= .4017550748885984 QR= .98364028817404 TP= 2459772.887877679 OM= 53.82863491497166 W= 349.3284650756269 IN= 36.84092379786306 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.109815980300286E-01 Y= 6.963131997859942E-01 Z= 9.264845637803981E-01 VX=-1.564120697068840E-02 VY=-5.199684443201080E-03 VZ= 7.122593945211272E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 19.86 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2023-Jul-29 00:00 2.304890908977 0.1366980 2023-Jul-29 06:00 2.304909945872 0.1270146 2023-Jul-29 12:00 2.304927584723 0.1173313 2023-Jul-29 18:00 2.304943825535 0.1076480 2023-Jul-30 00:00 2.304958668314 0.0979647 2023-Jul-30 06:00 2.304972113065 0.0882815 2023-Jul-30 12:00 2.304984159792 0.0785983 2023-Jul-30 18:00 2.304994808498 0.0689151 2023-Jul-31 00:00 2.305004059187 0.0592319 2023-Jul-31 06:00 2.305011911862 0.0495488 2023-Jul-31 12:00 2.305018366525 0.0398657 2023-Jul-31 18:00 2.305023423179 0.0301826 2023-Aug-01 00:00 2.305027081824 0.0204995 2023-Aug-01 06:00 2.305029342462 0.0108164 2023-Aug-01 12:00 2.305030205095 0.0011334 2023-Aug-01 18:00 2.305029669721 -0.0085497 2023-Aug-02 00:00 2.305027736341 -0.0182328 2023-Aug-02 06:00 2.305024404954 -0.0279159 2023-Aug-02 12:00 2.305019675560 -0.0375990 2023-Aug-02 18:00 2.305013548157 -0.0472820 2023-Aug-03 00:00 2.305006022743 -0.0569652 2023-Aug-03 06:00 2.304997099315 -0.0666483 2023-Aug-03 12:00 2.304986777871 -0.0763314 2023-Aug-03 18:00 2.304975058408 -0.0860146 2023-Aug-04 00:00 2.304961940922 -0.0956978 $$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 = '2023 GQ2' START_TIME = '2023-07-29' STOP_TIME = '2023-08-04' STEP_SIZE = '6 hour' QUANTITIES = '19'