API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 39P/Oterma 2024-May-03 11:13:22 Rec #:90000471 (+COV) Soln.date: 2024-Jan-16_15:22:33 # obs: 287 (1942-2023) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2456994.5 ! 2014-Dec-03.0000000 (TDB) RMSW= n.a. EC= .2284123245383775 QR= 5.712314418622992 TP= 2460043.7839299259 OM= 303.6355887080981 W= 89.7043305431787 IN= 1.478237003763243 A= 7.403325118179799 MA= 210.8024450350957 ADIST= 9.094335817736606 PER= 20.144126272711 N= .048928718 ANGMOM= .045567959 DAN= 7.00882 DDN= 7.02536 L= 33.3398208 B= 1.4782173 MOID= 4.71851015 TP= 2023-Apr-09.2839299259 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.8 M2= 13.6 k1= 14.75 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#24, data arc: 1942-02-17 to 2023-11-10 2: k1=14.75, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Fri May 3 11:13:22 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 39P/Oterma {source: JPL#24} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2042-Jul-11 00:00:00.0000 UT Stop time : A.D. 2042-Jul-14 00:00:00.0000 UT Step-size : 60 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= 2456994.5 ! 2014-Dec-03.0000000 (TDB) RMSW= n.a. EC= .2284123245383775 QR= 5.712314418622992 TP= 2460043.7839299259 OM= 303.6355887080981 W= 89.7043305431787 IN= 1.478237003763243 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-5.317289091597196E+00 Y=-6.496615807643809E+00 Z=-3.052929370218818E+00 VX= 4.401069487651736E-03 VY=-2.434098768573271E-03 VZ=-9.931961747958078E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.8 M2= 13.6 k1= 14.75 k2= 5. PHCOF= .030 ******************************************************************************* Date__(UT)__HR:MN r rdot VmagSn VmagOb *************************************************************************** $$SOE 2042-Jul-11 00:00 5.910941190607 -0.0028687 13.1683593 38.2979336 2042-Jul-11 01:00 5.910941122720 -0.0027730 13.1683595 38.2925902 2042-Jul-11 02:00 5.910941057135 -0.0026774 13.1683597 38.2872432 2042-Jul-11 03:00 5.910940993852 -0.0025817 13.1683599 38.2818926 2042-Jul-11 04:00 5.910940932871 -0.0024861 13.1683601 38.2765384 2042-Jul-11 05:00 5.910940874191 -0.0023904 13.1683603 38.2711805 2042-Jul-11 06:00 5.910940817814 -0.0022948 13.1683605 38.2658191 2042-Jul-11 07:00 5.910940763737 -0.0021992 13.1683607 38.2604540 2042-Jul-11 08:00 5.910940711963 -0.0021035 13.1683609 38.2550852 2042-Jul-11 09:00 5.910940662491 -0.0020079 13.1683611 38.2497128 2042-Jul-11 10:00 5.910940615320 -0.0019122 13.1683613 38.2443368 2042-Jul-11 11:00 5.910940570451 -0.0018166 13.1683614 38.2389571 2042-Jul-11 12:00 5.910940527884 -0.0017209 13.1683616 38.2335736 2042-Jul-11 13:00 5.910940487618 -0.0016253 13.1683618 38.2281865 2042-Jul-11 14:00 5.910940449655 -0.0015296 13.1683619 38.2227957 2042-Jul-11 15:00 5.910940413993 -0.0014340 13.1683621 38.2174012 2042-Jul-11 16:00 5.910940380633 -0.0013384 13.1683623 38.2120030 2042-Jul-11 17:00 5.910940349575 -0.0012427 13.1683624 38.2066011 2042-Jul-11 18:00 5.910940320818 -0.0011471 13.1683625 38.2011954 2042-Jul-11 19:00 5.910940294363 -0.0010514 13.1683627 38.1957859 2042-Jul-11 20:00 5.910940270211 -0.0009558 13.1683628 38.1903728 2042-Jul-11 21:00 5.910940248360 -0.0008601 13.1683630 38.1849558 2042-Jul-11 22:00 5.910940228810 -0.0007645 13.1683631 38.1795351 2042-Jul-11 23:00 5.910940211563 -0.0006688 13.1683632 38.1741107 2042-Jul-12 00:00 5.910940196618 -0.0005732 13.1683633 38.1686824 2042-Jul-12 01:00 5.910940183974 -0.0004776 13.1683634 38.1632503 2042-Jul-12 02:00 5.910940173632 -0.0003819 13.1683635 38.1578145 2042-Jul-12 03:00 5.910940165592 -0.0002863 13.1683636 38.1523748 2042-Jul-12 04:00 5.910940159854 -0.0001906 13.1683637 38.1469314 2042-Jul-12 05:00 5.910940156417 -0.0000950 13.1683638 38.1414841 2042-Jul-12 06:00 5.910940155283 0.0000007 13.1683639 38.1360330 2042-Jul-12 07:00 5.910940156450 0.0000963 13.1683640 38.1305781 2042-Jul-12 08:00 5.910940159919 0.0001920 13.1683641 38.1251193 2042-Jul-12 09:00 5.910940165690 0.0002876 13.1683642 38.1196566 2042-Jul-12 10:00 5.910940173763 0.0003833 13.1683643 38.1141902 2042-Jul-12 11:00 5.910940184138 0.0004789 13.1683643 38.1087198 2042-Jul-12 12:00 5.910940196814 0.0005746 13.1683644 38.1032456 2042-Jul-12 13:00 5.910940211793 0.0006702 13.1683644 38.0977675 2042-Jul-12 14:00 5.910940229073 0.0007659 13.1683645 38.0922855 2042-Jul-12 15:00 5.910940248655 0.0008615 13.1683646 38.0867997 2042-Jul-12 16:00 5.910940270539 0.0009572 13.1683646 38.0813099 2042-Jul-12 17:00 5.910940294725 0.0010528 13.1683646 38.0758163 2042-Jul-12 18:00 5.910940321213 0.0011484 13.1683647 38.0703187 2042-Jul-12 19:00 5.910940350003 0.0012441 13.1683647 38.0648172 2042-Jul-12 20:00 5.910940381095 0.0013397 13.1683648 38.0593119 2042-Jul-12 21:00 5.910940414488 0.0014354 13.1683648 38.0538026 2042-Jul-12 22:00 5.910940450183 0.0015310 13.1683648 38.0482893 2042-Jul-12 23:00 5.910940488181 0.0016267 13.1683648 38.0427722 2042-Jul-13 00:00 5.910940528480 0.0017223 13.1683648 38.0372511 2042-Jul-13 01:00 5.910940571081 0.0018180 13.1683648 38.0317260 2042-Jul-13 02:00 5.910940615984 0.0019136 13.1683648 38.0261970 2042-Jul-13 03:00 5.910940663189 0.0020093 13.1683648 38.0206641 2042-Jul-13 04:00 5.910940712696 0.0021049 13.1683648 38.0151272 2042-Jul-13 05:00 5.910940764505 0.0022006 13.1683648 38.0095863 2042-Jul-13 06:00 5.910940818615 0.0022962 13.1683648 38.0040415 2042-Jul-13 07:00 5.910940875028 0.0023919 13.1683648 37.9984927 2042-Jul-13 08:00 5.910940933742 0.0024875 13.1683648 37.9929399 2042-Jul-13 09:00 5.910940994759 0.0025832 13.1683647 37.9873831 2042-Jul-13 10:00 5.910941058077 0.0026788 13.1683647 37.9818224 2042-Jul-13 11:00 5.910941123698 0.0027745 13.1683647 37.9762577 2042-Jul-13 12:00 5.910941191620 0.0028701 13.1683646 37.9706889 2042-Jul-13 13:00 5.910941261844 0.0029658 13.1683646 37.9651162 2042-Jul-13 14:00 5.910941334370 0.0030614 13.1683646 37.9595395 2042-Jul-13 15:00 5.910941409198 0.0031571 13.1683645 37.9539588 2042-Jul-13 16:00 5.910941486329 0.0032527 13.1683644 37.9483741 2042-Jul-13 17:00 5.910941565761 0.0033484 13.1683644 37.9427854 2042-Jul-13 18:00 5.910941647494 0.0034440 13.1683643 37.9371926 2042-Jul-13 19:00 5.910941731530 0.0035397 13.1683642 37.9315959 2042-Jul-13 20:00 5.910941817868 0.0036353 13.1683642 37.9259951 2042-Jul-13 21:00 5.910941906508 0.0037310 13.1683641 37.9203903 2042-Jul-13 22:00 5.910941997450 0.0038266 13.1683640 37.9147815 2042-Jul-13 23:00 5.910942090694 0.0039223 13.1683639 37.9091687 2042-Jul-14 00:00 5.910942186240 0.0040180 13.1683638 37.9035518 $$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 'VmagSn VmagOb' = Magnitude of target centers' velocity with respect to the Sun ("VmagSn") and the observer ("VmagOb") at the time light left the target center to be observed (print time minus down-leg light-time). These are absolute values of the velocity vectors (total speeds) and do NOT indicate direction of motion. Units: 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 *******************************************************************************