******************************************************************************* JPL/HORIZONS 45P/Honda-Mrkos-Pajdusakova 2024-Apr-19 14:59:21 Rec #:90000533 (+COV) Soln.date: 2012-May-02_16:10:04 # obs: 912 (2006-2012) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456060.5 ! 2012-May-13.0000000 (TDB) RMSW= n.a. EC= .8246720758970018 QR= .5297614214191643 TP= 2455833.2822612515 OM= 89.00218090291999 W= 326.2580403750489 IN= 4.252433260900838 A= 3.021546191968544 MA= 42.63855227437559 ADIST= 5.513330962517924 PER= 5.2523306588211 N= .187655033 ANGMOM= .016912742 DAN= .57342 DDN= 3.07606 L= 55.3331379 B= -2.3605289 MOID= .060071 TP= 2011-Sep-28.7822612515 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= .800 M1= 13.7 M2= 18. k1= 22. k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 3.881341218948E-9 A2= 4.330065473914E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K112/2, data arc: 2006-05-30 to 2012-04-12 2: k1=22., k2=5., phase coef.=0.03; radar( 1 delay, 2 Dop.); ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri Apr 19 14:59:21 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 45P/Honda-Mrkos-Pajdusakova {source: JPL#K112/2} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2027-Aug-30 00:00:00.0000 UT Stop time : A.D. 2027-Sep-02 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 0.8 km 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.240419.p240713 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-19. PREDICTS-> 2024-JUL-12 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= 2456060.5 ! 2012-May-13.0000000 (TDB) RMSW= n.a. EC= .8246720758970018 QR= .5297614214191643 TP= 2455833.2822612515 OM= 89.00218090291999 W= 326.2580403750489 IN= 4.252433260900838 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.813268885311654E+00 Y=-1.063476800043785E+00 Z=-2.346210785686988E-01 VX=-5.642138897614672E-03 VY=-7.630275194134721E-03 VZ=-2.862429405442233E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= .800 M1= 13.7 M2= 18. k1= 22. k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 3.881341218948E-9 A2= 4.330065473914E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2027-Aug-30 00:00 0.560380597591 -2.9350842 2027-Aug-30 03:00 0.560174701932 -2.7695237 2027-Aug-30 06:00 0.559980766419 -2.6037130 2027-Aug-30 09:00 0.559798808586 -2.4376667 2027-Aug-30 12:00 0.559628844907 -2.2713995 2027-Aug-30 15:00 0.559470890793 -2.1049261 2027-Aug-30 18:00 0.559324960586 -1.9382615 2027-Aug-30 21:00 0.559191067552 -1.7714206 2027-Aug-31 00:00 0.559069223876 -1.6044184 2027-Aug-31 03:00 0.558959440659 -1.4372699 2027-Aug-31 06:00 0.558861727912 -1.2699902 2027-Aug-31 09:00 0.558776094554 -1.1025946 2027-Aug-31 12:00 0.558702548406 -0.9350982 2027-Aug-31 15:00 0.558641096188 -0.7675164 2027-Aug-31 18:00 0.558591743522 -0.5998643 2027-Aug-31 21:00 0.558554494921 -0.4321573 2027-Sep-01 00:00 0.558529353794 -0.2644108 2027-Sep-01 03:00 0.558516322443 -0.0966400 2027-Sep-01 06:00 0.558515402059 0.0711396 2027-Sep-01 09:00 0.558526592726 0.2389126 2027-Sep-01 12:00 0.558549893418 0.4066638 2027-Sep-01 15:00 0.558585302003 0.5743778 2027-Sep-01 18:00 0.558632815237 0.7420391 2027-Sep-01 21:00 0.558692428772 0.9096326 2027-Sep-02 00:00 0.558764137156 1.0771429 $$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 = '90000533' START_TIME = '2027-Aug-30' STOP_TIME = '2027-Sep-02' STEP_SIZE = '3 hours' QUANTITIES = '19'