******************************************************************************* JPL/HORIZONS 289P/Blanpain 2024-May-22 22:39:43 Rec #:90001248 (+COV) Soln.date: 2023-Apr-25_08:56:17 # obs: 342 (2013-2020) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458703.5 ! 2019-Aug-08.0000000 (TDB) RMSW= n.a. EC= .6851277579637538 QR= .9588909080014348 TP= 2458838.4924157336 OM= 68.92444589506259 W= 9.848338845201619 IN= 5.89739245756904 A= 3.045333249448686 MA= 334.964215373613 ADIST= 5.131775590895937 PER= 5.3144758587853 N= .185460676 ANGMOM= .02186666 DAN= .96467 DDN= 4.97234 L= 78.721675 B= 1.0069664 MOID= .0164523 TP= 2019-Dec-20.9924157336 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 22.1 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#K192/10, data arc: 2013-07-04 to 2020-03-15 2: k1=4.5; radar( 0 delay, 7 Dop.); ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed May 22 22:39:43 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 289P/Blanpain {source: JPL#K192/10} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2027-Sep-12 00:00:00.0000 UT Stop time : A.D. 2027-Sep-14 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.240522.p240815 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-22. PREDICTS-> 2024-AUG-14 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= 2458703.5 ! 2019-Aug-08.0000000 (TDB) RMSW= n.a. EC= .6851277579637538 QR= .9588909080014348 TP= 2458838.4924157336 OM= 68.92444589506259 W= 9.848338845201619 IN= 5.89739245756904 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.749262385996734E+00 Y=-7.009494697014425E-01 Z=-5.221085787400390E-01 VX=-3.141165388326773E-03 VY= 1.248326912570918E-02 VZ= 6.307406658356658E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 22.1 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2027-Sep-12 00:00 5.102378373870 1.1948096 2027-Sep-12 03:00 5.102464562536 1.1931263 2027-Sep-12 06:00 5.102550629696 1.1914431 2027-Sep-12 09:00 5.102636575354 1.1897598 2027-Sep-12 12:00 5.102722399513 1.1880767 2027-Sep-12 15:00 5.102808102175 1.1863936 2027-Sep-12 18:00 5.102893683345 1.1847105 2027-Sep-12 21:00 5.102979143025 1.1830274 2027-Sep-13 00:00 5.103064481218 1.1813445 2027-Sep-13 03:00 5.103149697927 1.1796615 2027-Sep-13 06:00 5.103234793156 1.1779786 2027-Sep-13 09:00 5.103319766907 1.1762957 2027-Sep-13 12:00 5.103404619184 1.1746129 2027-Sep-13 15:00 5.103489349990 1.1729301 2027-Sep-13 18:00 5.103573959328 1.1712474 2027-Sep-13 21:00 5.103658447200 1.1695647 2027-Sep-14 00:00 5.103742813610 1.1678820 $$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 = '90001248' QUANTITIES = '19' START_TIME = '2027-Sep-12' STEP_SIZE = '3 hours' STOP_TIME = '2027-Sep-14'