******************************************************************************* JPL/HORIZONS 28P/Neujmin 1 2024-May-05 03:22:56 Rec #:90000386 (+COV) Soln.date: 2024-Apr-16_15:14:57 # obs: 1208 (1913-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460047.5 ! 2023-Apr-13.0000000 (TDB) RMSW= n.a. EC= .7735624410849323 QR= 1.580917831614334 TP= 2459285.2588354461 OM= 346.3446540862636 W= 347.4674296232463 IN= 14.3102723585171 A= 6.981694376096439 MA= 40.72444950517802 ADIST= 12.38247092057854 PER= 18.448006914259 N= .05342725 ANGMOM= .028804433 DAN= 1.59752 DDN= 11.45042 L= 334.1892116 B= -3.0745425 MOID= .57402802 TP= 2021-Mar-11.7588354461 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 10.7 M1= 13.2 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. COMET comments 1: soln ref.= JPL#82, data arc: 1913-09-08 to 2024-04-08 2: k1=4.5; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sun May 5 03:22:56 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 28P/Neujmin 1 {source: JPL#82} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2039-Jul-18 00:00:00.0000 UT Stop time : A.D. 2039-Jul-30 00:00:00.0000 UT Step-size : 180 minutes ******************************************************************************* Target pole/equ : undefined Target radii : 10.7 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.240503.p240727 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-03. PREDICTS-> 2024-JUL-26 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= 2460047.5 ! 2023-Apr-13.0000000 (TDB) RMSW= n.a. EC= .7735624410849323 QR= 1.580917831614334 TP= 2459285.2588354461 OM= 346.3446540862636 W= 347.4674296232463 IN= 14.3102723585171 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-2.380408209743416E+00 Y= 4.889484934454471E+00 Z= 3.557966460189798E+00 VX=-6.090064888651529E-03 VY= 2.907790787852739E-03 VZ= 1.772171108040820E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= 10.7 M1= 13.2 M2= n.a. k1= 4.5 k2= n.a. PHCOF= n.a. ******************************************************************************* Date__(UT)__HR:MN r rdot ************************************************** $$SOE 2039-Jul-18 00:00 1.579844783832 -0.8562460 2039-Jul-18 03:00 1.579783681552 -0.8364312 2039-Jul-18 06:00 1.579724009941 -0.8166132 2039-Jul-18 09:00 1.579665769230 -0.7967920 2039-Jul-18 12:00 1.579608959645 -0.7769677 2039-Jul-18 15:00 1.579553581409 -0.7571404 2039-Jul-18 18:00 1.579499634735 -0.7373101 2039-Jul-18 21:00 1.579447119834 -0.7174770 2039-Jul-19 00:00 1.579396036909 -0.6976411 2039-Jul-19 03:00 1.579346386160 -0.6778024 2039-Jul-19 06:00 1.579298167779 -0.6579611 2039-Jul-19 09:00 1.579251381955 -0.6381173 2039-Jul-19 12:00 1.579206028868 -0.6182710 2039-Jul-19 15:00 1.579162108696 -0.5984222 2039-Jul-19 18:00 1.579119621609 -0.5785712 2039-Jul-19 21:00 1.579078567772 -0.5587179 2039-Jul-20 00:00 1.579038947346 -0.5388624 2039-Jul-20 03:00 1.579000760484 -0.5190048 2039-Jul-20 06:00 1.578964007335 -0.4991452 2039-Jul-20 09:00 1.578928688042 -0.4792836 2039-Jul-20 12:00 1.578894802743 -0.4594202 2039-Jul-20 15:00 1.578862351568 -0.4395550 2039-Jul-20 18:00 1.578831334646 -0.4196880 2039-Jul-20 21:00 1.578801752095 -0.3998195 2039-Jul-21 00:00 1.578773604032 -0.3799494 2039-Jul-21 03:00 1.578746890566 -0.3600778 2039-Jul-21 06:00 1.578721611801 -0.3402047 2039-Jul-21 09:00 1.578697767834 -0.3203304 2039-Jul-21 12:00 1.578675358760 -0.3004548 2039-Jul-21 15:00 1.578654384665 -0.2805781 2039-Jul-21 18:00 1.578634845630 -0.2607002 2039-Jul-21 21:00 1.578616741732 -0.2408214 2039-Jul-22 00:00 1.578600073040 -0.2209416 2039-Jul-22 03:00 1.578584839621 -0.2010609 2039-Jul-22 06:00 1.578571041532 -0.1811795 2039-Jul-22 09:00 1.578558678827 -0.1612973 2039-Jul-22 12:00 1.578547751555 -0.1414145 2039-Jul-22 15:00 1.578538259758 -0.1215312 2039-Jul-22 18:00 1.578530203472 -0.1016474 2039-Jul-22 21:00 1.578523582729 -0.0817632 2039-Jul-23 00:00 1.578518397554 -0.0618787 2039-Jul-23 03:00 1.578514647967 -0.0419940 2039-Jul-23 06:00 1.578512333983 -0.0221090 2039-Jul-23 09:00 1.578511455610 -0.0022240 2039-Jul-23 12:00 1.578512012851 0.0176610 2039-Jul-23 15:00 1.578514005704 0.0375459 2039-Jul-23 18:00 1.578517434161 0.0574307 2039-Jul-23 21:00 1.578522298208 0.0773153 2039-Jul-24 00:00 1.578528597826 0.0971995 2039-Jul-24 03:00 1.578536332989 0.1170834 2039-Jul-24 06:00 1.578545503668 0.1369668 2039-Jul-24 09:00 1.578556109827 0.1568497 2039-Jul-24 12:00 1.578568151422 0.1767320 2039-Jul-24 15:00 1.578581628409 0.1966136 2039-Jul-24 18:00 1.578596540732 0.2164944 2039-Jul-24 21:00 1.578612888334 0.2363743 2039-Jul-25 00:00 1.578630671151 0.2562534 2039-Jul-25 03:00 1.578649889114 0.2761314 2039-Jul-25 06:00 1.578670542145 0.2960084 2039-Jul-25 09:00 1.578692630166 0.3158842 2039-Jul-25 12:00 1.578716153089 0.3357587 2039-Jul-25 15:00 1.578741110822 0.3556320 2039-Jul-25 18:00 1.578767503267 0.3755038 2039-Jul-25 21:00 1.578795330322 0.3953742 2039-Jul-26 00:00 1.578824591877 0.4152431 2039-Jul-26 03:00 1.578855287818 0.4351103 2039-Jul-26 06:00 1.578887418025 0.4549759 2039-Jul-26 09:00 1.578920982372 0.4748396 2039-Jul-26 12:00 1.578955980728 0.4947015 2039-Jul-26 15:00 1.578992412956 0.5145615 2039-Jul-26 18:00 1.579030278915 0.5344195 2039-Jul-26 21:00 1.579069578455 0.5542753 2039-Jul-27 00:00 1.579110311423 0.5741291 2039-Jul-27 03:00 1.579152477661 0.5939805 2039-Jul-27 06:00 1.579196077004 0.6138297 2039-Jul-27 09:00 1.579241109281 0.6336765 2039-Jul-27 12:00 1.579287574317 0.6535208 2039-Jul-27 15:00 1.579335471930 0.6733625 2039-Jul-27 18:00 1.579384801934 0.6932016 2039-Jul-27 21:00 1.579435564136 0.7130381 2039-Jul-28 00:00 1.579487758338 0.7328717 2039-Jul-28 03:00 1.579541384336 0.7527025 2039-Jul-28 06:00 1.579596441923 0.7725304 2039-Jul-28 09:00 1.579652930881 0.7923552 2039-Jul-28 12:00 1.579710850993 0.8121770 2039-Jul-28 15:00 1.579770202032 0.8319956 2039-Jul-28 18:00 1.579830983766 0.8518110 2039-Jul-28 21:00 1.579893195960 0.8716230 2039-Jul-29 00:00 1.579956838370 0.8914317 2039-Jul-29 03:00 1.580021910750 0.9112369 2039-Jul-29 06:00 1.580088412845 0.9310385 2039-Jul-29 09:00 1.580156344398 0.9508365 2039-Jul-29 12:00 1.580225705143 0.9706309 2039-Jul-29 15:00 1.580296494810 0.9904214 2039-Jul-29 18:00 1.580368713126 1.0102081 2039-Jul-29 21:00 1.580442359808 1.0299909 2039-Jul-30 00:00 1.580517434571 1.0497697 $$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 = '90000386' START_TIME = '2039-Jul-18' STOP_TIME = '2039-Jul-30' STEP_SIZE = '3 hours' QUANTITIES = '19'