API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 54P/de Vico-Swift-NEAT 2024-May-02 15:37:54 Rec #:90000618 (+COV) Soln.date: 2023-Dec-05_08:41:56 # obs: 53 (2009-2015) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2455212.5 ! 2010-Jan-16.0000000 (TDB) RMSW= n.a. EC= .4262475375284139 QR= 2.172011351930537 TP= 2455163.6994609945 OM= 358.8531354931497 W= 1.797757214803525 IN= 6.068745418352728 A= 3.785624453050781 MA= 6.53013861839267 ADIST= 5.399237554171025 PER= 7.3657079424036 N= .133812838 ANGMOM= .030276798 DAN= 2.17233 DDN= 5.39726 L= .6408242 B= .190031 MOID= 1.16716003 TP= 2009-Nov-28.1994609945 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 16.9 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 1.282948150635E-6 A2= -2.73666973114E-7 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#K243/1, data arc: 2009-08-15 to 2015-05-21 2: k1=4.5; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Thu May 2 15:37:54 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 54P/de Vico-Swift-NEAT {source: JPL#K243/1} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2024-Sep-01 00:00:00.0000 UT Stop time : A.D. 2024-Sep-06 00:00:00.0000 UT Step-size : 120 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= 2455212.5 ! 2010-Jan-16.0000000 (TDB) RMSW= n.a. EC= .4262475375284139 QR= 2.172011351930537 TP= 2455163.6994609945 OM= 358.8531354931497 W= 1.797757214803525 IN= 6.068745418352728 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 2.090420215458907E+00 Y= 6.040816440869075E-01 Z= 3.469506803617725E-01 VX=-3.137678336036347E-03 VY= 1.169828581430722E-02 VZ= 6.612783665111121E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 16.9 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 1.282948150635E-6 A2= -2.73666973114E-7 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 2024-Sep-01 00:00 2.172577144299 0.4283682 2024-Sep-01 02:00 2.172597854565 0.4322118 2024-Sep-01 04:00 2.172618749819 0.4360551 2024-Sep-01 06:00 2.172639830051 0.4398983 2024-Sep-01 08:00 2.172661095250 0.4437413 2024-Sep-01 10:00 2.172682545409 0.4475840 2024-Sep-01 12:00 2.172704180515 0.4514265 2024-Sep-01 14:00 2.172726000560 0.4552689 2024-Sep-01 16:00 2.172748005534 0.4591110 2024-Sep-01 18:00 2.172770195425 0.4629529 2024-Sep-01 20:00 2.172792570224 0.4667946 2024-Sep-01 22:00 2.172815129921 0.4706361 2024-Sep-02 00:00 2.172837874505 0.4744773 2024-Sep-02 02:00 2.172860803965 0.4783184 2024-Sep-02 04:00 2.172883918291 0.4821592 2024-Sep-02 06:00 2.172907217472 0.4859998 2024-Sep-02 08:00 2.172930701497 0.4898402 2024-Sep-02 10:00 2.172954370356 0.4936803 2024-Sep-02 12:00 2.172978224037 0.4975203 2024-Sep-02 14:00 2.173002262530 0.5013599 2024-Sep-02 16:00 2.173026485824 0.5051994 2024-Sep-02 18:00 2.173050893906 0.5090386 2024-Sep-02 20:00 2.173075486766 0.5128776 2024-Sep-02 22:00 2.173100264393 0.5167164 2024-Sep-03 00:00 2.173125226775 0.5205549 2024-Sep-03 02:00 2.173150373901 0.5243932 2024-Sep-03 04:00 2.173175705758 0.5282312 2024-Sep-03 06:00 2.173201222336 0.5320690 2024-Sep-03 08:00 2.173226923622 0.5359066 2024-Sep-03 10:00 2.173252809605 0.5397439 2024-Sep-03 12:00 2.173278880272 0.5435809 2024-Sep-03 14:00 2.173305135612 0.5474177 2024-Sep-03 16:00 2.173331575613 0.5512543 2024-Sep-03 18:00 2.173358200261 0.5550906 2024-Sep-03 20:00 2.173385009546 0.5589266 2024-Sep-03 22:00 2.173412003454 0.5627624 2024-Sep-04 00:00 2.173439181974 0.5665979 2024-Sep-04 02:00 2.173466545092 0.5704332 2024-Sep-04 04:00 2.173494092796 0.5742682 2024-Sep-04 06:00 2.173521825073 0.5781030 2024-Sep-04 08:00 2.173549741911 0.5819374 2024-Sep-04 10:00 2.173577843297 0.5857716 2024-Sep-04 12:00 2.173606129217 0.5896056 2024-Sep-04 14:00 2.173634599659 0.5934392 2024-Sep-04 16:00 2.173663254609 0.5972726 2024-Sep-04 18:00 2.173692094055 0.6011057 2024-Sep-04 20:00 2.173721117983 0.6049386 2024-Sep-04 22:00 2.173750326380 0.6087712 2024-Sep-05 00:00 2.173779719232 0.6126034 2024-Sep-05 02:00 2.173809296526 0.6164354 2024-Sep-05 04:00 2.173839058248 0.6202672 2024-Sep-05 06:00 2.173869004384 0.6240986 2024-Sep-05 08:00 2.173899134921 0.6279298 2024-Sep-05 10:00 2.173929449845 0.6317606 2024-Sep-05 12:00 2.173959949141 0.6355912 2024-Sep-05 14:00 2.173990632797 0.6394215 2024-Sep-05 16:00 2.174021500797 0.6432515 2024-Sep-05 18:00 2.174052553127 0.6470812 2024-Sep-05 20:00 2.174083789774 0.6509106 2024-Sep-05 22:00 2.174115210723 0.6547396 2024-Sep-06 00:00 2.174146815959 0.6585684 $$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 *******************************************************************************