******************************************************************************* JPL/HORIZONS 27P/Crommelin 2024-May-07 09:29:14 Rec #:90000380 (+COV) Soln.date: 2023-May-12_09:58:07 # obs: 455 (1956-2012) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2452489.5 ! 2002-Aug-03.0000000 (TDB) RMSW= n.a. EC= .9192598738413604 QR= .7342100902931331 TP= 2455776.0678457562 OM= 250.9593527477335 W= 195.9554453537227 IN= 29.22111461111518 A= 9.093496941663735 MA= 241.8726970760545 ADIST= 17.45278379303434 PER= 27.42234496746 N= .035942451 ANGMOM= .02042013 DAN= 12.13166 DDN= .74801 L= 84.9697362 B= -7.7121339 MOID= .228681 TP= 2011-Aug-02.5678457562 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.7 M2= 16.3 k1= 27.75 k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 5.051930621266E-10 A2= -2.650786482263E-12 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#6, data arc: 1956-10-03 to 2012-01-26 2: k1=27.75, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue May 7 09:29:14 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 27P/Crommelin {source: JPL#6} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2039-May-26 00:00:00.0000 UT Stop time : A.D. 2039-Jun-10 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.240506.p240730 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-06. PREDICTS-> 2024-JUL-29 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= 2452489.5 ! 2002-Aug-03.0000000 (TDB) RMSW= n.a. EC= .9192598738413604 QR= .7342100902931331 TP= 2455776.0678457562 OM= 250.9593527477335 W= 195.9554453537227 IN= 29.22111461111518 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 3.379920025857457E-01 Y=-1.571253055347756E+01 Z=-3.475153988274675E+00 VX= 1.091206488523324E-03 VY= 1.476205577896977E-03 VZ= 9.262258847973063E-04 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 12.7 M2= 16.3 k1= 27.75 k2= 5. PHCOF= .030 Comet non-gravitational force model (AMRAT=m^2/kg;A1-A3=au/d^2;DT=days;R0=au): AMRAT= 0. DT= 0. A1= 5.051930621266E-10 A2= -2.650786482263E-12 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************************************* Date__(UT)__HR:MN r rdot delta deldot RNG_3sigma RNGRT_3sig ******************************************************************************************************* $$SOE 2039-May-26 00:00 0.740834547065 -1.0744071 1.72955220036483 -5.9725964 2074.7458 0.0022286 2039-May-26 03:00 0.740760848292 -0.9672449 1.72912276645019 -5.9237227 2070.0616 0.0022284 2039-May-26 06:00 0.740694887623 -0.8600414 1.72869686503735 -5.8747386 2065.3642 0.0022283 2039-May-26 09:00 0.740636667873 -0.7528011 1.72827450413389 -5.8256431 2060.6533 0.0022280 2039-May-26 12:00 0.740586191527 -0.6455286 1.72785569181769 -5.7764352 2055.9288 0.0022277 2039-May-26 15:00 0.740543460739 -0.5382286 1.72744043623635 -5.7271139 2051.1904 0.0022274 2039-May-26 18:00 0.740508477333 -0.4309056 1.72702874560706 -5.6776784 2046.4379 0.0022270 2039-May-26 21:00 0.740481242800 -0.3235641 1.72662062821611 -5.6281275 2041.6710 0.0022266 2039-May-27 00:00 0.740461758304 -0.2162089 1.72621609241857 -5.5784605 2036.8896 0.0022261 2039-May-27 03:00 0.740450024673 -0.1088443 1.72581514663786 -5.5286764 2032.0933 0.0022256 2039-May-27 06:00 0.740446042406 -0.0014752 1.72541779936529 -5.4787741 2027.2821 0.0022250 2039-May-27 09:00 0.740449811671 0.1058940 1.72502405915971 -5.4287528 2022.4556 0.0022243 2039-May-27 12:00 0.740461332301 0.2132587 1.72463393464692 -5.3786116 2017.6136 0.0022236 2039-May-27 15:00 0.740480603799 0.3206142 1.72424743451930 -5.3283495 2012.7559 0.0022229 2039-May-27 18:00 0.740507625339 0.4279560 1.72386456753524 -5.2779656 2007.8824 0.0022221 2039-May-27 21:00 0.740542395759 0.5352794 1.72348534251869 -5.2274590 2002.9927 0.0022213 2039-May-28 00:00 0.740584913570 0.6425800 1.72310976835846 -5.1768289 1998.0867 0.0022204 2039-May-28 03:00 0.740635176948 0.7498530 1.72273785400790 -5.1260743 1993.1641 0.0022194 2039-May-28 06:00 0.740693183740 0.8570940 1.72236960848413 -5.0751944 1988.2248 0.0022184 2039-May-28 09:00 0.740758931465 0.9642983 1.72200504086749 -5.0241882 1983.2685 0.0022174 2039-May-28 12:00 0.740832417310 1.0714615 1.72164416030098 -4.9730550 1978.2950 0.0022163 2039-May-28 15:00 0.740913638131 1.1785788 1.72128697598954 -4.9217938 1973.3042 0.0022151 2039-May-28 18:00 0.741002590460 1.2856459 1.72093349719948 -4.8704038 1968.2958 0.0022139 2039-May-28 21:00 0.741099270497 1.3926581 1.72058373325777 -4.8188843 1963.2696 0.0022127 2039-May-29 00:00 0.741203674115 1.4996110 1.72023769355127 -4.7672342 1958.2254 0.0022114 2039-May-29 03:00 0.741315796863 1.6064999 1.71989538752615 -4.7154530 1953.1630 0.0022101 2039-May-29 06:00 0.741435633963 1.7133205 1.71955682468706 -4.6635397 1948.0823 0.0022087 2039-May-29 09:00 0.741563180309 1.8200681 1.71922201459642 -4.6114935 1942.9830 0.0022072 2039-May-29 12:00 0.741698430477 1.9267384 1.71889096687363 -4.5593137 1937.8650 0.0022057 2039-May-29 15:00 0.741841378715 2.0333268 1.71856369119424 -4.5069994 1932.7281 0.0022042 2039-May-29 18:00 0.741992018951 2.1398289 1.71824019728920 -4.4545500 1927.5720 0.0022026 2039-May-29 21:00 0.742150344793 2.2462404 1.71792049494391 -4.4019647 1922.3966 0.0022010 2039-May-30 00:00 0.742316349528 2.3525566 1.71760459399753 -4.3492427 1917.2018 0.0021993 2039-May-30 03:00 0.742490026124 2.4587733 1.71729250434193 -4.2963833 1911.9874 0.0021976 2039-May-30 06:00 0.742671367235 2.5648861 1.71698423592078 -4.2433859 1906.7531 0.0021958 2039-May-30 09:00 0.742860365195 2.6708906 1.71667979872876 -4.1902496 1901.4989 0.0021940 2039-May-30 12:00 0.743057012027 2.7767824 1.71637920281044 -4.1369738 1896.2245 0.0021921 2039-May-30 15:00 0.743261299440 2.8825573 1.71608245825943 -4.0835580 1890.9298 0.0021902 2039-May-30 18:00 0.743473218831 2.9882109 1.71578957521720 -4.0300012 1885.6147 0.0021883 2039-May-30 21:00 0.743692761287 3.0937389 1.71550056387218 -3.9763031 1880.2790 0.0021863 2039-May-31 00:00 0.743919917587 3.1991372 1.71521543445866 -3.9224629 1874.9224 0.0021842 2039-May-31 03:00 0.744154678203 3.3044013 1.71493419725558 -3.8684799 1869.5450 0.0021821 2039-May-31 06:00 0.744397033304 3.4095273 1.71465686258557 -3.8143537 1864.1465 0.0021800 2039-May-31 09:00 0.744646972752 3.5145107 1.71438344081365 -3.7600836 1858.7269 0.0021778 2039-May-31 12:00 0.744904486111 3.6193476 1.71411394234606 -3.7056691 1853.2859 0.0021756 2039-May-31 15:00 0.745169562645 3.7240337 1.71384837762910 -3.6511096 1847.8234 0.0021733 2039-May-31 18:00 0.745442191318 3.8285650 1.71358675714772 -3.5964047 1842.3394 0.0021710 2039-May-31 21:00 0.745722360800 3.9329373 1.71332909142438 -3.5415537 1836.8336 0.0021686 2039-Jun-01 00:00 0.746010059468 4.0371466 1.71307539101759 -3.4865562 1831.3060 0.0021662 2039-Jun-01 03:00 0.746305275406 4.1411890 1.71282566652054 -3.4314117 1825.7564 0.0021638 2039-Jun-01 06:00 0.746607996409 4.2450602 1.71257992855978 -3.3761198 1820.1847 0.0021613 2039-Jun-01 09:00 0.746918209984 4.3487566 1.71233818779360 -3.3206800 1814.5909 0.0021588 2039-Jun-01 12:00 0.747235903354 4.4522740 1.71210045491066 -3.2650920 1808.9748 0.0021562 2039-Jun-01 15:00 0.747561063457 4.5556085 1.71186674062838 -3.2093554 1803.3362 0.0021536 2039-Jun-01 18:00 0.747893676952 4.6587564 1.71163705569132 -3.1534697 1797.6752 0.0021510 2039-Jun-01 21:00 0.748233730218 4.7617138 1.71141141086965 -3.0974346 1791.9917 0.0021483 2039-Jun-02 00:00 0.748581209359 4.8644767 1.71118981695734 -3.0412499 1786.2854 0.0021456 2039-Jun-02 03:00 0.748936100206 4.9670416 1.71097228477052 -2.9849152 1780.5564 0.0021428 2039-Jun-02 06:00 0.749298388316 5.0694046 1.71075882514567 -2.9284303 1774.8045 0.0021400 2039-Jun-02 09:00 0.749668058978 5.1715621 1.71054944893783 -2.8717948 1769.0298 0.0021372 2039-Jun-02 12:00 0.750045097217 5.2735102 1.71034416701865 -2.8150087 1763.2320 0.0021343 2039-Jun-02 15:00 0.750429487791 5.3752456 1.71014299027459 -2.7580717 1757.4112 0.0021314 2039-Jun-02 18:00 0.750821215198 5.4767644 1.70994592960487 -2.7009836 1751.5673 0.0021284 2039-Jun-02 21:00 0.751220263677 5.5780631 1.70975299591949 -2.6437443 1745.7002 0.0021254 2039-Jun-03 00:00 0.751626617211 5.6791383 1.70956420013718 -2.5863537 1739.8099 0.0021224 2039-Jun-03 03:00 0.752040259530 5.7799864 1.70937955318332 -2.5288118 1733.8963 0.0021193 2039-Jun-03 06:00 0.752461174112 5.8806040 1.70919906598776 -2.4711184 1727.9594 0.0021162 2039-Jun-03 09:00 0.752889344188 5.9809877 1.70902274948266 -2.4132736 1721.9992 0.0021131 2039-Jun-03 12:00 0.753324752744 6.0811340 1.70885061460027 -2.3552773 1716.0155 0.0021099 2039-Jun-03 15:00 0.753767382522 6.1810397 1.70868267227070 -2.2971297 1710.0084 0.0021067 2039-Jun-03 18:00 0.754217216025 6.2807014 1.70851893341957 -2.2388308 1703.9779 0.0021035 2039-Jun-03 21:00 0.754674235521 6.3801158 1.70835940896575 -2.1803806 1697.9239 0.0021002 2039-Jun-04 00:00 0.755138423040 6.4792798 1.70820410981897 -2.1217794 1691.8464 0.0020969 2039-Jun-04 03:00 0.755609760384 6.5781902 1.70805304687750 -2.0630274 1685.7454 0.0020935 2039-Jun-04 06:00 0.756088229126 6.6768439 1.70790623102569 -2.0041246 1679.6209 0.0020902 2039-Jun-04 09:00 0.756573810613 6.7752376 1.70776367313163 -1.9450715 1673.4729 0.0020868 2039-Jun-04 12:00 0.757066485970 6.8733684 1.70762538404468 -1.8858682 1667.3014 0.0020833 2039-Jun-04 15:00 0.757566236103 6.9712333 1.70749137459314 -1.8265150 1661.1064 0.0020799 2039-Jun-04 18:00 0.758073041701 7.0688292 1.70736165558169 -1.7670124 1654.8879 0.0020764 2039-Jun-04 21:00 0.758586883239 7.1661533 1.70723623778910 -1.7073606 1648.6460 0.0020728 2039-Jun-05 00:00 0.759107740983 7.2632026 1.70711513196581 -1.6475601 1642.3807 0.0020693 2039-Jun-05 03:00 0.759635594991 7.3599743 1.70699834883145 -1.5876114 1636.0919 0.0020657 2039-Jun-05 06:00 0.760170425116 7.4564656 1.70688589907260 -1.5275148 1629.7798 0.0020621 2039-Jun-05 09:00 0.760712211010 7.5526737 1.70677779334037 -1.4672710 1623.4444 0.0020585 2039-Jun-05 12:00 0.761260932127 7.6485959 1.70667404224815 -1.4068804 1617.0858 0.0020548 2039-Jun-05 15:00 0.761816567726 7.7442295 1.70657465636932 -1.3463436 1610.7039 0.0020511 2039-Jun-05 18:00 0.762379096875 7.8395718 1.70647964623505 -1.2856613 1604.2988 0.0020474 2039-Jun-05 21:00 0.762948498449 7.9346204 1.70638902233215 -1.2248340 1597.8706 0.0020436 2039-Jun-06 00:00 0.763524751143 8.0293725 1.70630279510095 -1.1638624 1591.4195 0.0020398 2039-Jun-06 03:00 0.764107833465 8.1238258 1.70622097493327 -1.1027472 1584.9453 0.0020360 2039-Jun-06 06:00 0.764697723745 8.2179777 1.70614357217043 -1.0414890 1578.4483 0.0020322 2039-Jun-06 09:00 0.765294400137 8.3118258 1.70607059710136 -0.9800888 1571.9285 0.0020284 2039-Jun-06 12:00 0.765897840620 8.4053678 1.70600205996077 -0.9185471 1565.3861 0.0020245 2039-Jun-06 15:00 0.766508023005 8.4986013 1.70593797092741 -0.8568648 1558.8210 0.0020206 2039-Jun-06 18:00 0.767124924935 8.5915240 1.70587834012240 -0.7950428 1552.2334 0.0020167 2039-Jun-06 21:00 0.767748523890 8.6841337 1.70582317760759 -0.7330817 1545.6235 0.0020127 2039-Jun-07 00:00 0.768378797189 8.7764282 1.70577249338415 -0.6709826 1538.9913 0.0020087 2039-Jun-07 03:00 0.769015721991 8.8684053 1.70572629739112 -0.6087462 1532.3370 0.0020048 2039-Jun-07 06:00 0.769659275306 8.9600629 1.70568459950404 -0.5463734 1525.6606 0.0020007 2039-Jun-07 09:00 0.770309433988 9.0513989 1.70564740953380 -0.4838652 1518.9624 0.0019967 2039-Jun-07 12:00 0.770966174745 9.1424113 1.70561473722539 -0.4212224 1512.2424 0.0019927 2039-Jun-07 15:00 0.771629474141 9.2330981 1.70558659225693 -0.3584461 1505.5009 0.0019886 2039-Jun-07 18:00 0.772299308597 9.3234574 1.70556298423863 -0.2955371 1498.7379 0.0019845 2039-Jun-07 21:00 0.772975654396 9.4134873 1.70554392271190 -0.2324963 1491.9536 0.0019804 2039-Jun-08 00:00 0.773658487686 9.5031859 1.70552941714855 -0.1693249 1485.1483 0.0019763 2039-Jun-08 03:00 0.774347784482 9.5925514 1.70551947695003 -0.1060237 1478.3220 0.0019721 2039-Jun-08 06:00 0.775043520670 9.6815821 1.70551411144674 -0.0425938 1471.4749 0.0019679 2039-Jun-08 09:00 0.775745672010 9.7702762 1.70551332989751 0.0209640 1464.6073 0.0019638 2039-Jun-08 12:00 0.776454214141 9.8586320 1.70551714148893 0.0846484 1457.7193 0.0019596 2039-Jun-08 15:00 0.777169122580 9.9466479 1.70552555533502 0.1484587 1450.8112 0.0019553 2039-Jun-08 18:00 0.777890372727 10.0343224 1.70553858047669 0.2123936 1443.8830 0.0019511 2039-Jun-08 21:00 0.778617939872 10.1216538 1.70555622588145 0.2764523 1436.9351 0.0019468 2039-Jun-09 00:00 0.779351799191 10.2086407 1.70557850044305 0.3406337 1429.9677 0.0019426 2039-Jun-09 03:00 0.780091925753 10.2952815 1.70560541298121 0.4049368 1422.9810 0.0019383 2039-Jun-09 06:00 0.780838294525 10.3815749 1.70563697224137 0.4693604 1415.9752 0.0019340 2039-Jun-09 09:00 0.781590880371 10.4675195 1.70567318689449 0.5339037 1408.9506 0.0019297 2039-Jun-09 12:00 0.782349658057 10.5531140 1.70571406553686 0.5985656 1401.9074 0.0019254 2039-Jun-09 15:00 0.783114602254 10.6383570 1.70575961668991 0.6633450 1394.8459 0.0019210 2039-Jun-09 18:00 0.783885687541 10.7232473 1.70580984880013 0.7282409 1387.7663 0.0019167 2039-Jun-09 21:00 0.784662888407 10.8077836 1.70586477023888 0.7932522 1380.6690 0.0019123 2039-Jun-10 00:00 0.785446179255 10.8919649 1.70592438930229 0.8583780 1373.5542 0.0019080 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. '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 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, 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 = '90000380' START_TIME = '2039-May-26' STOP_TIME = '2039-Jun-10' STEP_SIZE = '3 hours' QUANTITIES = '19,20,39'