******************************************************************************* JPL/HORIZONS 246P/NEAT 2024-May-22 19:32:15 Rec #:90001203 (+COV) Soln.date: 2024-Feb-01_00:43:49 # obs: 4898 (2002-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456421.5 ! 2013-May-09.0000000 (TDB) RMSW= n.a. EC= .2850464394426229 QR= 2.879730058048208 TP= 2456321.1436281665 OM= 78.7805532076722 W= 176.1738468842388 IN= 15.97173457442769 A= 4.027856097119333 MA= 12.23596163505695 ADIST= 5.175982136190457 PER= 8.083866289620699 N= .12192511 ANGMOM= .033091522 DAN= 5.17139 DDN= 2.88115 L= 255.1016852 B= 1.052093 MOID= 1.86494994 TP= 2013-Jan-28.6436281665 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.1 M2= 11.3 k1= 14.5 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= 1.249526023865E-8 A2= 4.499300718307E-9 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#260, data arc: 2002-01-06 to 2024-01-28 2: k1=14.5, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed May 22 19:32:15 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 246P/NEAT {source: JPL#260} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2029-Oct-21 00:00:00.0000 UT Stop time : A.D. 2029-Nov-03 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.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= 2456421.5 ! 2013-May-09.0000000 (TDB) RMSW= n.a. EC= .2850464394426229 QR= 2.879730058048208 TP= 2456321.1436281665 OM= 78.7805532076722 W= 176.1738468842388 IN= 15.97173457442769 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 3.533919440320352E-01 Y=-2.554223719442962E+00 Z=-1.391356737667252E+00 VX= 1.090782026410800E-02 VY= 1.763312831491524E-03 VZ=-2.536251589614056E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.1 M2= 11.3 k1= 14.5 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= 1.249526023865E-8 A2= 4.499300718307E-9 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 2029-Oct-21 00:00 3.480341787322 -0.0645821 2029-Oct-21 03:00 3.480337163409 -0.0635220 2029-Oct-21 06:00 3.480332616027 -0.0624618 2029-Oct-21 09:00 3.480328145176 -0.0614017 2029-Oct-21 12:00 3.480323750857 -0.0603415 2029-Oct-21 15:00 3.480319433070 -0.0592814 2029-Oct-21 18:00 3.480315191817 -0.0582212 2029-Oct-21 21:00 3.480311027097 -0.0571610 2029-Oct-22 00:00 3.480306938912 -0.0561008 2029-Oct-22 03:00 3.480302927260 -0.0550406 2029-Oct-22 06:00 3.480298992144 -0.0539804 2029-Oct-22 09:00 3.480295133564 -0.0529202 2029-Oct-22 12:00 3.480291351519 -0.0518600 2029-Oct-22 15:00 3.480287646011 -0.0507998 2029-Oct-22 18:00 3.480284017039 -0.0497396 2029-Oct-22 21:00 3.480280464605 -0.0486794 2029-Oct-23 00:00 3.480276988709 -0.0476191 2029-Oct-23 03:00 3.480273589351 -0.0465589 2029-Oct-23 06:00 3.480270266531 -0.0454987 2029-Oct-23 09:00 3.480267020250 -0.0444384 2029-Oct-23 12:00 3.480263850509 -0.0433782 2029-Oct-23 15:00 3.480260757307 -0.0423179 2029-Oct-23 18:00 3.480257740644 -0.0412576 2029-Oct-23 21:00 3.480254800523 -0.0401974 2029-Oct-24 00:00 3.480251936941 -0.0391371 2029-Oct-24 03:00 3.480249149900 -0.0380768 2029-Oct-24 06:00 3.480246439401 -0.0370166 2029-Oct-24 09:00 3.480243805443 -0.0359563 2029-Oct-24 12:00 3.480241248026 -0.0348960 2029-Oct-24 15:00 3.480238767152 -0.0338357 2029-Oct-24 18:00 3.480236362819 -0.0327754 2029-Oct-24 21:00 3.480234035029 -0.0317151 2029-Oct-25 00:00 3.480231783781 -0.0306548 2029-Oct-25 03:00 3.480229609076 -0.0295945 2029-Oct-25 06:00 3.480227510914 -0.0285342 2029-Oct-25 09:00 3.480225489295 -0.0274739 2029-Oct-25 12:00 3.480223544219 -0.0264136 2029-Oct-25 15:00 3.480221675687 -0.0253533 2029-Oct-25 18:00 3.480219883698 -0.0242930 2029-Oct-25 21:00 3.480218168252 -0.0232327 2029-Oct-26 00:00 3.480216529350 -0.0221724 2029-Oct-26 03:00 3.480214966992 -0.0211121 2029-Oct-26 06:00 3.480213481178 -0.0200518 2029-Oct-26 09:00 3.480212071908 -0.0189915 2029-Oct-26 12:00 3.480210739181 -0.0179312 2029-Oct-26 15:00 3.480209482999 -0.0168708 2029-Oct-26 18:00 3.480208303361 -0.0158105 2029-Oct-26 21:00 3.480207200266 -0.0147502 2029-Oct-27 00:00 3.480206173716 -0.0136899 2029-Oct-27 03:00 3.480205223709 -0.0126296 2029-Oct-27 06:00 3.480204350247 -0.0115693 2029-Oct-27 09:00 3.480203553329 -0.0105090 2029-Oct-27 12:00 3.480202832954 -0.0094487 2029-Oct-27 15:00 3.480202189123 -0.0083884 2029-Oct-27 18:00 3.480201621836 -0.0073281 2029-Oct-27 21:00 3.480201131092 -0.0062678 2029-Oct-28 00:00 3.480200716892 -0.0052075 2029-Oct-28 03:00 3.480200379236 -0.0041472 2029-Oct-28 06:00 3.480200118122 -0.0030869 2029-Oct-28 09:00 3.480199933552 -0.0020266 2029-Oct-28 12:00 3.480199825524 -0.0009663 2029-Oct-28 15:00 3.480199794040 0.0000940 2029-Oct-28 18:00 3.480199839098 0.0011543 2029-Oct-28 21:00 3.480199960698 0.0022146 2029-Oct-29 00:00 3.480200158840 0.0032749 2029-Oct-29 03:00 3.480200433525 0.0043351 2029-Oct-29 06:00 3.480200784751 0.0053954 2029-Oct-29 09:00 3.480201212518 0.0064557 2029-Oct-29 12:00 3.480201716827 0.0075159 2029-Oct-29 15:00 3.480202297676 0.0085762 2029-Oct-29 18:00 3.480202955066 0.0096365 2029-Oct-29 21:00 3.480203688997 0.0106967 2029-Oct-30 00:00 3.480204499467 0.0117570 2029-Oct-30 03:00 3.480205386477 0.0128172 2029-Oct-30 06:00 3.480206350026 0.0138774 2029-Oct-30 09:00 3.480207390115 0.0149377 2029-Oct-30 12:00 3.480208506741 0.0159979 2029-Oct-30 15:00 3.480209699906 0.0170581 2029-Oct-30 18:00 3.480210969609 0.0181183 2029-Oct-30 21:00 3.480212315849 0.0191785 2029-Oct-31 00:00 3.480213738626 0.0202388 2029-Oct-31 03:00 3.480215237940 0.0212989 2029-Oct-31 06:00 3.480216813789 0.0223591 2029-Oct-31 09:00 3.480218466174 0.0234193 2029-Oct-31 12:00 3.480220195095 0.0244795 2029-Oct-31 15:00 3.480222000550 0.0255397 2029-Oct-31 18:00 3.480223882539 0.0265998 2029-Oct-31 21:00 3.480225841061 0.0276600 2029-Nov-01 00:00 3.480227876117 0.0287201 2029-Nov-01 03:00 3.480229987705 0.0297803 2029-Nov-01 06:00 3.480232175825 0.0308404 2029-Nov-01 09:00 3.480234440477 0.0319005 2029-Nov-01 12:00 3.480236781660 0.0329606 2029-Nov-01 15:00 3.480239199372 0.0340207 2029-Nov-01 18:00 3.480241693615 0.0350808 2029-Nov-01 21:00 3.480244264386 0.0361409 2029-Nov-02 00:00 3.480246911686 0.0372010 2029-Nov-02 03:00 3.480249635513 0.0382611 2029-Nov-02 06:00 3.480252435867 0.0393211 2029-Nov-02 09:00 3.480255312748 0.0403812 2029-Nov-02 12:00 3.480258266155 0.0414412 2029-Nov-02 15:00 3.480261296086 0.0425013 2029-Nov-02 18:00 3.480264402542 0.0435613 2029-Nov-02 21:00 3.480267585521 0.0446213 2029-Nov-03 00:00 3.480270845023 0.0456813 $$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 = '246P' QUANTITIES = '19' START_TIME = '2029-Oct-21' STEP_SIZE = '3 hours' STOP_TIME = '2029-Nov-03'