API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 157P-B/Tritton 2024-May-01 21:12:59 Rec #:90001095 (+COV) Soln.date: 2022-Nov-15_15:16:10 # obs: 28 (38 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2459834.5 ! 2022-Sep-12.0000000 (TDB) RMSW= n.a. EC= .5011093561620154 QR= 1.551987387462324 TP= 2459830.5656359619 OM= 287.1023341111452 W= 153.9770702895046 IN= 12.42744628542088 A= 3.110876915876446 MA= .7067313769717921 ADIST= 4.669766444290567 PER= 5.4869682182039 N= .179630398 ANGMOM= .02625619 DAN= 4.23818 DDN= 1.60635 L= 81.611062 B= 5.4177226 MOID= .57870001 TP= 2022-Sep-08.0656359619 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 15.7 M2= n.a. k1= 10. k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#4, data arc: 2022-08-21 to 2022-09-28 2: k1=10.; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Wed May 1 21:12:59 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 157P-B/Tritton {source: JPL#4} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2028-Mar-05 00:00:00.0000 UT Stop time : A.D. 2028-Mar-09 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.240501.p240725 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-01. PREDICTS-> 2024-JUL-24 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-12.0000000 (TDB) RMSW= n.a. EC= .5011093561620154 QR= 1.551987387462324 TP= 2459830.5656359619 OM= 287.1023341111452 W= 153.9770702895046 IN= 12.42744628542088 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.608700632412810E-01 Y= 1.358246625567756E+00 Z= 7.344593836813175E-01 VX=-1.643283466801129E-02 VY= 3.383667274122241E-03 VZ=-2.146438762332166E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 15.7 M2= n.a. k1= 10. k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2028-Mar-05 00:00 1.553347783593 -0.2350319 2028-Mar-05 03:00 1.553331296114 -0.2217411 2028-Mar-05 06:00 1.553315768142 -0.2084495 2028-Mar-05 09:00 1.553301199726 -0.1951573 2028-Mar-05 12:00 1.553287590911 -0.1818645 2028-Mar-05 15:00 1.553274941737 -0.1685712 2028-Mar-05 18:00 1.553263252244 -0.1552773 2028-Mar-05 21:00 1.553252522468 -0.1419830 2028-Mar-06 00:00 1.553242752442 -0.1286882 2028-Mar-06 03:00 1.553233942195 -0.1153930 2028-Mar-06 06:00 1.553226091755 -0.1020975 2028-Mar-06 09:00 1.553219201146 -0.0888016 2028-Mar-06 12:00 1.553213270389 -0.0755055 2028-Mar-06 15:00 1.553208299502 -0.0622092 2028-Mar-06 18:00 1.553204288500 -0.0489126 2028-Mar-06 21:00 1.553201237396 -0.0356159 2028-Mar-07 00:00 1.553199146198 -0.0223191 2028-Mar-07 03:00 1.553198014914 -0.0090223 2028-Mar-07 06:00 1.553197843545 0.0042746 2028-Mar-07 09:00 1.553198632094 0.0175715 2028-Mar-07 12:00 1.553200380556 0.0308683 2028-Mar-07 15:00 1.553203088927 0.0441651 2028-Mar-07 18:00 1.553206757197 0.0574616 2028-Mar-07 21:00 1.553211385356 0.0707580 2028-Mar-08 00:00 1.553216973390 0.0840542 2028-Mar-08 03:00 1.553223521279 0.0973502 2028-Mar-08 06:00 1.553231029005 0.1106458 2028-Mar-08 09:00 1.553239496543 0.1239411 2028-Mar-08 12:00 1.553248923868 0.1372360 2028-Mar-08 15:00 1.553259310951 0.1505304 2028-Mar-08 18:00 1.553270657758 0.1638244 2028-Mar-08 21:00 1.553282964254 0.1771179 2028-Mar-09 00:00 1.553296230403 0.1904109 $$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 *******************************************************************************