API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 156P/Russell-LINEAR 2024-May-09 12:47:04 Rec #:90001091 (+COV) Soln.date: 2023-May-03_22:44:05 # obs: 2317 (2000-2022) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458928.5 ! 2020-Mar-20.0000000 (TDB) RMSW= n.a. EC= .6149238983079718 QR= 1.333115162690266 TP= 2459171.3263460109 OM= 35.39722114846191 W= .37808969411674 IN= 17.26358893400925 A= 3.461952473374859 MA= 322.8449178004089 ADIST= 5.590789784059453 PER= 6.4415421728142 N= .153010918 ANGMOM= .025240114 DAN= 1.33313 DDN= 5.5906 L= 35.7582782 B= .1122042 MOID= .33881801 TP= 2020-Nov-17.8263460109 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.7 M2= n.a. k1= 9. k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#48, data arc: 2000-08-31 to 2022-03-31 2: k1=9.; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Thu May 9 12:47:04 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 156P/Russell-LINEAR {source: JPL#48} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2027-Apr-25 00:00:00.0000 UT Stop time : A.D. 2027-May-05 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.240508.p240801 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-08. PREDICTS-> 2024-JUL-31 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= 2458928.5 ! 2020-Mar-20.0000000 (TDB) RMSW= n.a. EC= .6149238983079718 QR= 1.333115162690266 TP= 2459171.3263460109 OM= 35.39722114846191 W= .37808969411674 IN= 17.26358893400925 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 6.538166058548707E-01 Y=-2.039430871062883E+00 Z=-1.717781727990150E+00 VX= 7.180324873205259E-03 VY= 7.710942906970580E-03 VZ= 4.367360885138751E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.7 M2= n.a. k1= 9. k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2027-Apr-25 00:00 1.336166675169 -0.9986007 2027-Apr-25 03:00 1.336095375764 -0.9766239 2027-Apr-25 06:00 1.336025663141 -0.9546418 2027-Apr-25 09:00 1.335957537681 -0.9326544 2027-Apr-25 12:00 1.335890999761 -0.9106619 2027-Apr-25 15:00 1.335826049744 -0.8886644 2027-Apr-25 18:00 1.335762687989 -0.8666620 2027-Apr-25 21:00 1.335700914844 -0.8446549 2027-Apr-26 00:00 1.335640730648 -0.8226431 2027-Apr-26 03:00 1.335582135733 -0.8006267 2027-Apr-26 06:00 1.335525130420 -0.7786060 2027-Apr-26 09:00 1.335469715023 -0.7565810 2027-Apr-26 12:00 1.335415889848 -0.7345518 2027-Apr-26 15:00 1.335363655190 -0.7125186 2027-Apr-26 18:00 1.335313011336 -0.6904814 2027-Apr-26 21:00 1.335263958567 -0.6684404 2027-Apr-27 00:00 1.335216497151 -0.6463958 2027-Apr-27 03:00 1.335170627350 -0.6243476 2027-Apr-27 06:00 1.335126349417 -0.6022959 2027-Apr-27 09:00 1.335083663595 -0.5802410 2027-Apr-27 12:00 1.335042570119 -0.5581828 2027-Apr-27 15:00 1.335003069216 -0.5361215 2027-Apr-27 18:00 1.334965161103 -0.5140574 2027-Apr-27 21:00 1.334928845990 -0.4919903 2027-Apr-28 00:00 1.334894124075 -0.4699206 2027-Apr-28 03:00 1.334860995551 -0.4478482 2027-Apr-28 06:00 1.334829460599 -0.4257734 2027-Apr-28 09:00 1.334799519394 -0.4036963 2027-Apr-28 12:00 1.334771172100 -0.3816169 2027-Apr-28 15:00 1.334744418873 -0.3595354 2027-Apr-28 18:00 1.334719259861 -0.3374520 2027-Apr-28 21:00 1.334695695202 -0.3153666 2027-Apr-29 00:00 1.334673725027 -0.2932796 2027-Apr-29 03:00 1.334653349454 -0.2711909 2027-Apr-29 06:00 1.334634568598 -0.2491007 2027-Apr-29 09:00 1.334617382561 -0.2270092 2027-Apr-29 12:00 1.334601791437 -0.2049164 2027-Apr-29 15:00 1.334587795313 -0.1828225 2027-Apr-29 18:00 1.334575394264 -0.1607275 2027-Apr-29 21:00 1.334564588360 -0.1386317 2027-Apr-30 00:00 1.334555377659 -0.1165351 2027-Apr-30 03:00 1.334547762211 -0.0944379 2027-Apr-30 06:00 1.334541742059 -0.0723402 2027-Apr-30 09:00 1.334537317235 -0.0502421 2027-Apr-30 12:00 1.334534487763 -0.0281437 2027-Apr-30 15:00 1.334533253657 -0.0060451 2027-Apr-30 18:00 1.334533614925 0.0160534 2027-Apr-30 21:00 1.334535571564 0.0381519 2027-May-01 00:00 1.334539123561 0.0602502 2027-May-01 03:00 1.334544270898 0.0823481 2027-May-01 06:00 1.334551013545 0.1044456 2027-May-01 09:00 1.334559351465 0.1265425 2027-May-01 12:00 1.334569284609 0.1486387 2027-May-01 15:00 1.334580812924 0.1707340 2027-May-01 18:00 1.334593936345 0.1928284 2027-May-01 21:00 1.334608654798 0.2149218 2027-May-02 00:00 1.334624968202 0.2370139 2027-May-02 03:00 1.334642876466 0.2591047 2027-May-02 06:00 1.334662379490 0.2811941 2027-May-02 09:00 1.334683477167 0.3032819 2027-May-02 12:00 1.334706169378 0.3253681 2027-May-02 15:00 1.334730455998 0.3474524 2027-May-02 18:00 1.334756336892 0.3695348 2027-May-02 21:00 1.334783811916 0.3916152 2027-May-03 00:00 1.334812880919 0.4136934 2027-May-03 03:00 1.334843543738 0.4357693 2027-May-03 06:00 1.334875800204 0.4578428 2027-May-03 09:00 1.334909650139 0.4799138 2027-May-03 12:00 1.334945093354 0.5019821 2027-May-03 15:00 1.334982129654 0.5240476 2027-May-03 18:00 1.335020758832 0.5461102 2027-May-03 21:00 1.335060980676 0.5681699 2027-May-04 00:00 1.335102794963 0.5902263 2027-May-04 03:00 1.335146201462 0.6122795 2027-May-04 06:00 1.335191199932 0.6343294 2027-May-04 09:00 1.335237790124 0.6563757 2027-May-04 12:00 1.335285971781 0.6784184 2027-May-04 15:00 1.335335744636 0.7004573 2027-May-04 18:00 1.335387108415 0.7224924 2027-May-04 21:00 1.335440062834 0.7445235 2027-May-05 00:00 1.335494607599 0.7665504 $$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 *******************************************************************************