******************************************************************************* JPL/HORIZONS Great comet (C/1861 J1) 2024-May-07 17:07:05 Rec #:90001694 Soln.date: - # obs: 1156 (1861-1862) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2400920.5 ! 1861-May-25.0000000 (TDB) RMSW= n.a. EC= .98507 QR= .822384 TP= 2400938.5068000001 OM= 280.9099 W= 330.0841 IN= 85.44240000000001 A= 55.0826523777629 MA= 359.9565871449668 ADIST= 109.3429207555258 PER= 408.8184328332 N= .002410914 ANGMOM= .021978937 DAN= .88061 DDN= 11.16749 L= 278.2920683 B= -29.8117091 TP= 1861-Jun-12.0068000001 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= n.a. k1= n.a. k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= SAO_2008, data arc: 1861-05-27 to 1862-05-01 2: epoch may be 2400921.0 (hour ambiguous: 12h/0h); time units are UT, but set to E ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue May 7 17:07:05 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Great comet (C/1861 J1) {source: SAO_200820} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2267-Jan-01 00:00:00.0000 UT Stop time : A.D. 2267-Mar-01 00:00:00.0000 UT Step-size : 120 steps ******************************************************************************* 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.240507.p240731 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-07. PREDICTS-> 2024-JUL-30 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= 2400920.5 ! 1861-May-25.0000000 (TDB) RMSW= n.a. EC= .98507 QR= .822384 TP= 2400938.5068000001 OM= 280.9099 W= 330.0841 IN= 85.44240000000001 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.858982303452826E-02 Y=-7.962556672707560E-02 Z=-8.848687004691421E-01 VX= 4.890562708690100E-03 VY=-2.348137356412693E-02 VZ= 9.237174540013132E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= n.a. M2= n.a. k1= n.a. k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN:SC.fff r rdot ********************************************************* $$SOE 2267-Jan-01 00:00:00.000 1.021089703584 -17.9289289 2267-Jan-01 11:48:00.000 1.016019893288 -17.7792839 2267-Jan-01 23:36:00.000 1.010993068853 -17.6261700 2267-Jan-02 11:24:00.000 1.006010222413 -17.4695360 2267-Jan-02 23:12:00.000 1.001072360542 -17.3093314 2267-Jan-03 11:00:00.000 0.996180504049 -17.1455066 2267-Jan-03 22:48:00.000 0.991335687748 -16.9780126 2267-Jan-04 10:36:00.000 0.986538960193 -16.8068015 2267-Jan-04 22:24:00.000 0.981791383382 -16.6318267 2267-Jan-05 10:12:00.000 0.977094032420 -16.4530424 2267-Jan-05 22:00:00.000 0.972447995152 -16.2704047 2267-Jan-06 09:48:00.000 0.967854371757 -16.0838708 2267-Jan-06 21:36:00.000 0.963314274294 -15.8933998 2267-Jan-07 09:24:00.000 0.958828826221 -15.6989523 2267-Jan-07 21:12:00.000 0.954399161860 -15.5004912 2267-Jan-08 09:00:00.000 0.950026425829 -15.2979813 2267-Jan-08 20:48:00.000 0.945711772415 -15.0913896 2267-Jan-09 08:36:00.000 0.941456364920 -14.8806856 2267-Jan-09 20:24:00.000 0.937261374946 -14.6658415 2267-Jan-10 08:12:00.000 0.933127981636 -14.4468321 2267-Jan-10 20:00:00.000 0.929057370875 -14.2236351 2267-Jan-11 07:48:00.000 0.925050734427 -13.9962314 2267-Jan-11 19:36:00.000 0.921109269037 -13.7646051 2267-Jan-12 07:24:00.000 0.917234175477 -13.5287437 2267-Jan-12 19:12:00.000 0.913426657539 -13.2886386 2267-Jan-13 07:00:00.000 0.909687920986 -13.0442847 2267-Jan-13 18:48:00.000 0.906019172448 -12.7956809 2267-Jan-14 06:36:00.000 0.902421618270 -12.5428303 2267-Jan-14 18:24:00.000 0.898896463311 -12.2857404 2267-Jan-15 06:12:00.000 0.895444909700 -12.0244230 2267-Jan-15 18:00:00.000 0.892068155536 -11.7588947 2267-Jan-16 05:48:00.000 0.888767393558 -11.4891769 2267-Jan-16 17:36:00.000 0.885543809755 -11.2152957 2267-Jan-17 05:24:00.000 0.882398581947 -10.9372824 2267-Jan-17 17:12:00.000 0.879332878322 -10.6551738 2267-Jan-18 05:00:00.000 0.876347855938 -10.3690116 2267-Jan-18 16:48:00.000 0.873444659194 -10.0788432 2267-Jan-19 04:36:00.000 0.870624418263 -9.7847215 2267-Jan-19 16:24:00.000 0.867888247509 -9.4867051 2267-Jan-20 04:12:00.000 0.865237243874 -9.1848581 2267-Jan-20 16:00:00.000 0.862672485244 -8.8792505 2267-Jan-21 03:48:00.000 0.860195028813 -8.5699583 2267-Jan-21 15:36:00.000 0.857805909420 -8.2570630 2267-Jan-22 03:24:00.000 0.855506137893 -7.9406521 2267-Jan-22 15:12:00.000 0.853296699394 -7.6208190 2267-Jan-23 03:00:00.000 0.851178551757 -7.2976629 2267-Jan-23 14:48:00.000 0.849152623852 -6.9712885 2267-Jan-24 02:36:00.000 0.847219813957 -6.6418067 2267-Jan-24 14:24:00.000 0.845380988155 -6.3093334 2267-Jan-25 02:12:00.000 0.843636978758 -5.9739905 2267-Jan-25 14:00:00.000 0.841988582768 -5.6359049 2267-Jan-26 01:48:00.000 0.840436560374 -5.2952089 2267-Jan-26 13:36:00.000 0.838981633505 -4.9520397 2267-Jan-27 01:24:00.000 0.837624484424 -4.6065395 2267-Jan-27 13:12:00.000 0.836365754385 -4.2588550 2267-Jan-28 01:00:00.000 0.835206042361 -3.9091373 2267-Jan-28 12:48:00.000 0.834145903830 -3.5575415 2267-Jan-29 00:36:00.000 0.833185849643 -3.2042269 2267-Jan-29 12:24:00.000 0.832326344974 -2.8493559 2267-Jan-30 00:12:00.000 0.831567808350 -2.4930946 2267-Jan-30 12:00:00.000 0.830910610775 -2.1356117 2267-Jan-30 23:48:00.000 0.830355074945 -1.7770786 2267-Jan-31 11:36:00.000 0.829901474563 -1.4176689 2267-Jan-31 23:24:00.000 0.829550033753 -1.0575582 2267-Feb-01 11:12:00.000 0.829300926579 -0.6969235 2267-Feb-01 23:00:00.000 0.829154276668 -0.3359429 2267-Feb-02 10:48:00.000 0.829110156946 0.0252046 2267-Feb-02 22:36:00.000 0.829168589478 0.3863397 2267-Feb-03 10:24:00.000 0.829329545418 0.7472833 2267-Feb-03 22:12:00.000 0.829592945075 1.1078565 2267-Feb-04 10:00:00.000 0.829958658084 1.4678813 2267-Feb-04 21:48:00.000 0.830426503684 1.8271808 2267-Feb-05 09:36:00.000 0.830996251112 2.1855797 2267-Feb-05 21:24:00.000 0.831667620097 2.5429048 2267-Feb-06 09:12:00.000 0.832440281456 2.8989848 2267-Feb-06 21:00:00.000 0.833313857794 3.2536514 2267-Feb-07 08:48:00.000 0.834287924301 3.6067391 2267-Feb-07 20:36:00.000 0.835362009640 3.9580858 2267-Feb-08 08:24:00.000 0.836535596930 4.3075329 2267-Feb-08 20:12:00.000 0.837808124800 4.6549256 2267-Feb-09 08:00:00.000 0.839178988544 5.0001135 2267-Feb-09 19:48:00.000 0.840647541327 5.3429504 2267-Feb-10 07:36:00.000 0.842213095480 5.6832950 2267-Feb-10 19:24:00.000 0.843874923848 6.0210105 2267-Feb-11 07:12:00.000 0.845632261192 6.3559655 2267-Feb-11 19:00:00.000 0.847484305659 6.6880336 2267-Feb-12 06:48:00.000 0.849430220279 7.0170939 2267-Feb-12 18:36:00.000 0.851469134512 7.3430309 2267-Feb-13 06:24:00.000 0.853600145830 7.6657347 2267-Feb-13 18:12:00.000 0.855822321318 7.9851014 2267-Feb-14 06:00:00.000 0.858134699308 8.3010324 2267-Feb-14 17:48:00.000 0.860536291018 8.6134353 2267-Feb-15 05:36:00.000 0.863026082211 8.9222232 2267-Feb-15 17:24:00.000 0.865603034848 9.2273155 2267-Feb-16 05:12:00.000 0.868266088754 9.5286369 2267-Feb-16 17:00:00.000 0.871014163268 9.8261184 2267-Feb-17 04:48:00.000 0.873846158883 10.1196963 2267-Feb-17 16:36:00.000 0.876760958877 10.4093130 2267-Feb-18 04:24:00.000 0.879757430922 10.6949163 2267-Feb-18 16:12:00.000 0.882834428666 10.9764596 2267-Feb-19 04:00:00.000 0.885990793294 11.2539017 2267-Feb-19 15:48:00.000 0.889225355054 11.5272068 2267-Feb-20 03:36:00.000 0.892536934753 11.7963443 2267-Feb-20 15:24:00.000 0.895924345212 12.0612885 2267-Feb-21 03:12:00.000 0.899386392686 12.3220188 2267-Feb-21 15:00:00.000 0.902921878244 12.5785193 2267-Feb-22 02:48:00.000 0.906529599099 12.8307788 2267-Feb-22 14:36:00.000 0.910208349901 13.0787905 2267-Feb-23 02:24:00.000 0.913956923980 13.3225518 2267-Feb-23 14:12:00.000 0.917774114538 13.5620644 2267-Feb-24 02:00:00.000 0.921658715800 13.7973338 2267-Feb-24 13:48:00.000 0.925609524107 14.0283694 2267-Feb-25 01:36:00.000 0.929625338968 14.2551842 2267-Feb-25 13:24:00.000 0.933704964053 14.4777945 2267-Feb-26 01:12:00.000 0.937847208144 14.6962199 2267-Feb-26 13:00:00.000 0.942050886027 14.9104831 2267-Feb-27 00:48:00.000 0.946314819345 15.1206097 2267-Feb-27 12:36:00.000 0.950637837392 15.3266280 2267-Feb-28 00:24:00.000 0.955018777867 15.5285689 2267-Feb-28 12:12:00.000 0.959456487571 15.7264656 2267-Mar-01 00:00:00.000 0.963949823072 15.9203536 $$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 = '1861 J1' START_TIME = '2267-01-01' STOP_TIME = '2267-03-01' STEP_SIZE = '120' QUANTITIES = '19'