******************************************************************************* JPL/HORIZONS 77P/Longmore 2024-May-13 12:17:29 Rec #:90000835 Soln.date: - # obs: 293 (1975-2003) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2450000.5 ! 1995-Oct-10.0000000 (TDB) RMSW= n.a. EC= .343059 QR= 2.398972 TP= 2449999.8171999999 OM= 15.6565 W= 195.7961 IN= 24.4098 A= 3.651731281804607 MA= .09643826059832469 ADIST= 4.904490563609214 PER= 6.9784090067211 N= .141239397 ANGMOM= .030877461 DAN= 4.80964 DDN= 2.42234 L= 210.1024055 B= -6.4591914 TP= 1995-Oct-09.3171999999 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 4.1 M1= 9.1 M2= 13.3 k1= 14.75 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= SAO/1995 2: k1=14.75, k2=5., phase coef.=0.03;non-gravs. considered; 2008 SAO Comet Catalog ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Mon May 13 12:17:29 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 77P/Longmore {source: SAO/199520} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2023-Sep-27 00:00:00.0000 UT Stop time : A.D. 2023-Oct-02 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 4.1 km 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.240510.p240803 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-10. PREDICTS-> 2024-AUG-02 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= 2450000.5 ! 1995-Oct-10.0000000 (TDB) RMSW= n.a. EC= .343059 QR= 2.398972 TP= 2449999.8171999999 OM= 15.6565 W= 195.7961 IN= 24.4098 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.057857185183116E+00 Y=-9.943706731234906E-01 Z=-7.290659469938978E-01 VX= 6.447446633673653E-03 VY=-7.045482133693684E-03 VZ=-8.628844947849093E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 4.1 M1= 9.1 M2= 13.3 k1= 14.75 k2= 5. PHCOF= .030 ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2023-Sep-27 00:00 2.612959637099 4.6533405 2023-Sep-27 03:00 2.613295627407 4.6553572 2023-Sep-27 06:00 2.613631763236 4.6573719 2023-Sep-27 09:00 2.613968044442 4.6593847 2023-Sep-27 12:00 2.614304470882 4.6613954 2023-Sep-27 15:00 2.614641042413 4.6634042 2023-Sep-27 18:00 2.614977758892 4.6654109 2023-Sep-27 21:00 2.615314620175 4.6674157 2023-Sep-28 00:00 2.615651626119 4.6694185 2023-Sep-28 03:00 2.615988776582 4.6714194 2023-Sep-28 06:00 2.616326071421 4.6734182 2023-Sep-28 09:00 2.616663510492 4.6754151 2023-Sep-28 12:00 2.617001093652 4.6774100 2023-Sep-28 15:00 2.617338820759 4.6794029 2023-Sep-28 18:00 2.617676691669 4.6813938 2023-Sep-28 21:00 2.618014706240 4.6833827 2023-Sep-29 00:00 2.618352864329 4.6853697 2023-Sep-29 03:00 2.618691165793 4.6873547 2023-Sep-29 06:00 2.619029610489 4.6893377 2023-Sep-29 09:00 2.619368198275 4.6913187 2023-Sep-29 12:00 2.619706929008 4.6932978 2023-Sep-29 15:00 2.620045802545 4.6952749 2023-Sep-29 18:00 2.620384818744 4.6972500 2023-Sep-29 21:00 2.620723977462 4.6992231 2023-Sep-30 00:00 2.621063278557 4.7011943 2023-Sep-30 03:00 2.621402721886 4.7031635 2023-Sep-30 06:00 2.621742307306 4.7051307 2023-Sep-30 09:00 2.622082034675 4.7070959 2023-Sep-30 12:00 2.622421903852 4.7090592 2023-Sep-30 15:00 2.622761914692 4.7110205 2023-Sep-30 18:00 2.623102067055 4.7129798 2023-Sep-30 21:00 2.623442360798 4.7149371 2023-Oct-01 00:00 2.623782795778 4.7168925 2023-Oct-01 03:00 2.624123371853 4.7188459 2023-Oct-01 06:00 2.624464088882 4.7207973 2023-Oct-01 09:00 2.624804946721 4.7227468 2023-Oct-01 12:00 2.625145945230 4.7246943 2023-Oct-01 15:00 2.625487084265 4.7266398 2023-Oct-01 18:00 2.625828363686 4.7285834 2023-Oct-01 21:00 2.626169783349 4.7305250 2023-Oct-02 00:00 2.626511343113 4.7324646 $$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 = '90000835' START_TIME = '2023-Sep-27' STOP_TIME = '2023-Oct-02' STEP_SIZE = '3 hours' QUANTITIES = '19'