API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 13P/Olbers 2024-Apr-30 04:01:37 Rec #:90000226 (+COV) Soln.date: 2024-Apr-29_15:03:53 # obs: 1516 (1887-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458136.5 ! 2018-Jan-18.0000000 (TDB) RMSW= n.a. EC= .9302444951818024 QR= 1.160691249397305 TP= 2460490.7569010681 OM= 85.89885426861763 W= 64.66200651936647 IN= 44.62782263886866 A= 16.63942153988265 MA= 325.8138188395701 ADIST= 32.118151830368 PER= 67.87589022034 N= .014521007 ANGMOM= .025748146 DAN= 1.60247 DDN= 3.72227 L= 142.2616176 B= 39.413875 MOID= .45913199 TP= 2024-Jun-29.2569010681 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 5.3 M2= 12.9 k1= 22.25 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= 1.543928980827E-9 A2= 5.913251638412E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 COMET comments 1: soln ref.= JPL#38, data arc: 1887-08-27 to 2024-04-23 2: k1=22.25, k2=5., phase coef.=0.03; ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Tue Apr 30 04:01:37 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 13P/Olbers {source: JPL#38} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2094-Jan-01 00:00:00.0000 UT Stop time : A.D. 2094-Jan-20 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.240429.p240723 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-29. PREDICTS-> 2024-JUL-22 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= 2458136.5 ! 2018-Jan-18.0000000 (TDB) RMSW= n.a. EC= .9302444951818024 QR= 1.160691249397305 TP= 2460490.7569010681 OM= 85.89885426861763 W= 64.66200651936647 IN= 44.62782263886866 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.124868981842619E+01 Y= 2.981507518497300E+00 Z=-1.090169038902271E+01 VX=-2.712526192091553E-03 VY= 7.299052623694262E-04 VZ= 3.382356495793091E-03 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 5.3 M2= 12.9 k1= 22.25 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= 1.543928980827E-9 A2= 5.913251638412E-10 A3= 0. Standard model: ALN= .1112620426 NK= 4.6142 NM= 2.15 NN= 5.093 R0= 2.808 ******************************************************************************* Date__(UT)__HR:MN delta deldot S-O-T /r **************************************************************** $$SOE 2094-Jan-01 00:00 0.74862522139482 -5.3536940 145.0234 /T 2094-Jan-01 03:00 0.74824163891582 -5.2720258 144.8343 /T 2094-Jan-01 06:00 0.74786394824825 -5.1904839 144.6450 /T 2094-Jan-01 09:00 0.74749214019835 -5.1090704 144.4554 /T 2094-Jan-01 12:00 0.74712620542216 -5.0277874 144.2656 /T 2094-Jan-01 15:00 0.74676613442632 -4.9466369 144.0755 /T 2094-Jan-01 18:00 0.74641191756769 -4.8656210 143.8853 /T 2094-Jan-01 21:00 0.74606354505362 -4.7847418 143.6948 /T 2094-Jan-02 00:00 0.74572100694214 -4.7040013 143.5042 /T 2094-Jan-02 03:00 0.74538429314215 -4.6234016 143.3133 /T 2094-Jan-02 06:00 0.74505339341354 -4.5429448 143.1223 /T 2094-Jan-02 09:00 0.74472829736732 -4.4626329 142.9311 /T 2094-Jan-02 12:00 0.74440899446600 -4.3824680 142.7397 /T 2094-Jan-02 15:00 0.74409547402371 -4.3024522 142.5481 /T 2094-Jan-02 18:00 0.74378772520660 -4.2225874 142.3564 /T 2094-Jan-02 21:00 0.74348573703283 -4.1428757 142.1646 /T 2094-Jan-03 00:00 0.74318949837313 -4.0633192 141.9725 /T 2094-Jan-03 03:00 0.74289899795092 -3.9839199 141.7804 /T 2094-Jan-03 06:00 0.74261422434285 -3.9046799 141.5881 /T 2094-Jan-03 09:00 0.74233516597885 -3.8256011 141.3956 /T 2094-Jan-03 12:00 0.74206181114266 -3.7466856 141.2031 /T 2094-Jan-03 15:00 0.74179414797231 -3.6679355 141.0104 /T 2094-Jan-03 18:00 0.74153216446036 -3.5893526 140.8176 /T 2094-Jan-03 21:00 0.74127584845432 -3.5109391 140.6248 /T 2094-Jan-04 00:00 0.74102518765709 -3.4326968 140.4318 /T 2094-Jan-04 03:00 0.74078016962773 -3.3546279 140.2387 /T 2094-Jan-04 06:00 0.74054078178133 -3.2767343 140.0455 /T 2094-Jan-04 09:00 0.74030701139004 -3.1990180 139.8523 /T 2094-Jan-04 12:00 0.74007884558336 -3.1214809 139.6589 /T 2094-Jan-04 15:00 0.73985627134877 -3.0441251 139.4655 /T 2094-Jan-04 18:00 0.73963927553214 -2.9669524 139.2721 /T 2094-Jan-04 21:00 0.73942784483857 -2.8899648 139.0785 /T 2094-Jan-05 00:00 0.73922196583251 -2.8131643 138.8849 /T 2094-Jan-05 03:00 0.73902162493906 -2.7365527 138.6913 /T 2094-Jan-05 06:00 0.73882680844398 -2.6601321 138.4976 /T 2094-Jan-05 09:00 0.73863750249464 -2.5839043 138.3039 /T 2094-Jan-05 12:00 0.73845369310069 -2.5078712 138.1101 /T 2094-Jan-05 15:00 0.73827536613468 -2.4320348 137.9163 /T 2094-Jan-05 18:00 0.73810250733280 -2.3563968 137.7225 /T 2094-Jan-05 21:00 0.73793510229554 -2.2809593 137.5287 /T 2094-Jan-06 00:00 0.73777313648860 -2.2057239 137.3348 /T 2094-Jan-06 03:00 0.73761659524341 -2.1306927 137.1410 /T 2094-Jan-06 06:00 0.73746546375809 -2.0558674 136.9471 /T 2094-Jan-06 09:00 0.73731972709811 -1.9812498 136.7532 /T 2094-Jan-06 12:00 0.73717937019730 -1.9068419 136.5594 /T 2094-Jan-06 15:00 0.73704437785838 -1.8326453 136.3655 /T 2094-Jan-06 18:00 0.73691473475406 -1.7586619 136.1717 /T 2094-Jan-06 21:00 0.73679042542751 -1.6848935 135.9778 /T 2094-Jan-07 00:00 0.73667143429381 -1.6113419 135.7840 /T 2094-Jan-07 03:00 0.73655774564019 -1.5380087 135.5902 /T 2094-Jan-07 06:00 0.73644934362729 -1.4648958 135.3965 /T 2094-Jan-07 09:00 0.73634621228996 -1.3920049 135.2028 /T 2094-Jan-07 12:00 0.73624833553805 -1.3193378 135.0091 /T 2094-Jan-07 15:00 0.73615569715740 -1.2468960 134.8155 /T 2094-Jan-07 18:00 0.73606828081086 -1.1746814 134.6219 /T 2094-Jan-07 21:00 0.73598607003889 -1.1026956 134.4284 /T 2094-Jan-08 00:00 0.73590904826083 -1.0309402 134.2350 /T 2094-Jan-08 03:00 0.73583719877551 -0.9594171 134.0416 /T 2094-Jan-08 06:00 0.73577050476244 -0.8881277 133.8482 /T 2094-Jan-08 09:00 0.73570894928260 -0.8170737 133.6550 /T 2094-Jan-08 12:00 0.73565251527934 -0.7462568 133.4618 /T 2094-Jan-08 15:00 0.73560118557935 -0.6756786 133.2687 /T 2094-Jan-08 18:00 0.73555494289356 -0.6053406 133.0756 /T 2094-Jan-08 21:00 0.73551376981822 -0.5352445 132.8827 /T 2094-Jan-09 00:00 0.73547764883546 -0.4653917 132.6898 /T 2094-Jan-09 03:00 0.73544656231470 -0.3957840 132.4971 /T 2094-Jan-09 06:00 0.73542049251292 -0.3264227 132.3044 /T 2094-Jan-09 09:00 0.73539942157623 -0.2573095 132.1119 /T 2094-Jan-09 12:00 0.73538333154031 -0.1884459 131.9194 /T 2094-Jan-09 15:00 0.73537220433144 -0.1198334 131.7271 /T 2094-Jan-09 18:00 0.73536602176737 -0.0514734 131.5349 /T 2094-Jan-09 21:00 0.73536476555822 0.0166324 131.3428 /T 2094-Jan-10 00:00 0.73536841730723 0.0844828 131.1508 /T 2094-Jan-10 03:00 0.73537695851173 0.1520761 130.9589 /T 2094-Jan-10 06:00 0.73539037056374 0.2194110 130.7672 /T 2094-Jan-10 09:00 0.73540863475097 0.2864860 130.5756 /T 2094-Jan-10 12:00 0.73543173225774 0.3532997 130.3841 /T 2094-Jan-10 15:00 0.73545964416537 0.4198507 130.1928 /T 2094-Jan-10 18:00 0.73549235145332 0.4861375 130.0016 /T 2094-Jan-10 21:00 0.73552983499966 0.5521588 129.8106 /T 2094-Jan-11 00:00 0.73557207558211 0.6179131 129.6197 /T 2094-Jan-11 03:00 0.73561905387838 0.6833991 129.4289 /T 2094-Jan-11 06:00 0.73567075046713 0.7486155 129.2384 /T 2094-Jan-11 09:00 0.73572714582871 0.8135608 129.0479 /T 2094-Jan-11 12:00 0.73578822034564 0.8782337 128.8577 /T 2094-Jan-11 15:00 0.73585395430326 0.9426329 128.6676 /T 2094-Jan-11 18:00 0.73592432789051 1.0067571 128.4777 /T 2094-Jan-11 21:00 0.73599932120067 1.0706048 128.2879 /T 2094-Jan-12 00:00 0.73607891423158 1.1341749 128.0984 /T 2094-Jan-12 03:00 0.73616308688668 1.1974660 127.9090 /T 2094-Jan-12 06:00 0.73625181897537 1.2604768 127.7198 /T 2094-Jan-12 09:00 0.73634509021371 1.3232060 127.5307 /T 2094-Jan-12 12:00 0.73644288022491 1.3856523 127.3419 /T 2094-Jan-12 15:00 0.73654516854010 1.4478145 127.1532 /T 2094-Jan-12 18:00 0.73665193459876 1.5096913 126.9648 /T 2094-Jan-12 21:00 0.73676315774948 1.5712814 126.7765 /T 2094-Jan-13 00:00 0.73687881725042 1.6325837 126.5885 /T 2094-Jan-13 03:00 0.73699889226999 1.6935968 126.4006 /T 2094-Jan-13 06:00 0.73712336188771 1.7543195 126.2130 /T 2094-Jan-13 09:00 0.73725220509452 1.8147506 126.0255 /T 2094-Jan-13 12:00 0.73738540079375 1.8748890 125.8383 /T 2094-Jan-13 15:00 0.73752292780162 1.9347333 125.6513 /T 2094-Jan-13 18:00 0.73766476484820 1.9942824 125.4645 /T 2094-Jan-13 21:00 0.73781089057823 2.0535352 125.2779 /T 2094-Jan-14 00:00 0.73796128355166 2.1124904 125.0916 /T 2094-Jan-14 03:00 0.73811592224485 2.1711470 124.9055 /T 2094-Jan-14 06:00 0.73827478505143 2.2295037 124.7196 /T 2094-Jan-14 09:00 0.73843785028318 2.2875595 124.5339 /T 2094-Jan-14 12:00 0.73860509617136 2.3453132 124.3485 /T 2094-Jan-14 15:00 0.73877650086762 2.4027638 124.1633 /T 2094-Jan-14 18:00 0.73895204244516 2.4599101 123.9783 /T 2094-Jan-14 21:00 0.73913169890043 2.5167512 123.7936 /T 2094-Jan-15 00:00 0.73931544815399 2.5732859 123.6091 /T 2094-Jan-15 03:00 0.73950326805226 2.6295133 123.4249 /T 2094-Jan-15 06:00 0.73969513636915 2.6854323 123.2409 /T 2094-Jan-15 09:00 0.73989103080738 2.7410420 123.0572 /T 2094-Jan-15 12:00 0.74009092900040 2.7963415 122.8737 /T 2094-Jan-15 15:00 0.74029480851448 2.8513298 122.6905 /T 2094-Jan-15 18:00 0.74050264685005 2.9060061 122.5075 /T 2094-Jan-15 21:00 0.74071442144434 2.9603694 122.3248 /T 2094-Jan-16 00:00 0.74093010967297 3.0144189 122.1424 /T 2094-Jan-16 03:00 0.74114968885256 3.0681539 121.9602 /T 2094-Jan-16 06:00 0.74137313624290 3.1215735 121.7783 /T 2094-Jan-16 09:00 0.74160042904935 3.1746770 121.5966 /T 2094-Jan-16 12:00 0.74183154442521 3.2274638 121.4153 /T 2094-Jan-16 15:00 0.74206645947462 3.2799331 121.2342 /T 2094-Jan-16 18:00 0.74230515125486 3.3320843 121.0534 /T 2094-Jan-16 21:00 0.74254759677941 3.3839169 120.8728 /T 2094-Jan-17 00:00 0.74279377302039 3.4354302 120.6925 /T 2094-Jan-17 03:00 0.74304365691167 3.4866239 120.5126 /T 2094-Jan-17 06:00 0.74329722535190 3.5374973 120.3329 /T 2094-Jan-17 09:00 0.74355445520706 3.5880501 120.1535 /T 2094-Jan-17 12:00 0.74381532331386 3.6382819 119.9743 /T 2094-Jan-17 15:00 0.74407980648253 3.6881923 119.7955 /T 2094-Jan-17 18:00 0.74434788150012 3.7377811 119.6169 /T 2094-Jan-17 21:00 0.74461952513324 3.7870480 119.4387 /T 2094-Jan-18 00:00 0.74489471413140 3.8359927 119.2607 /T 2094-Jan-18 03:00 0.74517342522990 3.8846151 119.0831 /T 2094-Jan-18 06:00 0.74545563515313 3.9329151 118.9057 /T 2094-Jan-18 09:00 0.74574132061731 3.9808926 118.7286 /T 2094-Jan-18 12:00 0.74603045833369 4.0285474 118.5519 /T 2094-Jan-18 15:00 0.74632302501143 4.0758797 118.3754 /T 2094-Jan-18 18:00 0.74661899736061 4.1228895 118.1993 /T 2094-Jan-18 21:00 0.74691835209505 4.1695767 118.0234 /T 2094-Jan-19 00:00 0.74722106593493 4.2159416 117.8479 /T 2094-Jan-19 03:00 0.74752711561001 4.2619842 117.6726 /T 2094-Jan-19 06:00 0.74783647786172 4.3077048 117.4977 /T 2094-Jan-19 09:00 0.74814912944638 4.3531036 117.3231 /T 2094-Jan-19 12:00 0.74846504713711 4.3981808 117.1488 /T 2094-Jan-19 15:00 0.74878420772667 4.4429367 116.9749 /T 2094-Jan-19 18:00 0.74910658802971 4.4873717 116.8012 /T 2094-Jan-19 21:00 0.74943216488489 4.5314860 116.6279 /T 2094-Jan-20 00:00 0.74976091515744 4.5752801 116.4548 /T $$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. '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 'S-O-T /r' = Sun-Observer-Target apparent SOLAR ELONGATION ANGLE seen from the observers' location at print-time. The '/r' column provides a code indicating the targets' apparent position relative to the Sun in the observers' sky, as described below: Case A: For an observing location on the surface of a rotating body, that body rotational sense is considered: /T indicates target TRAILS Sun (evening sky: rises and sets AFTER Sun) /L indicates target LEADS Sun (morning sky: rises and sets BEFORE Sun) Case B: For an observing point that does not have a rotational model (such as a spacecraft), the "leading" and "trailing" condition is defined by the observers' heliocentric ORBITAL motion: * If continuing in the observers' current direction of heliocentric motion would encounter the targets' apparent longitude first, followed by the Sun's, the target LEADS the Sun as seen by the observer. * If the Sun's apparent longitude would be encountered first, followed by the targets', the target TRAILS the Sun. Two other codes can be output: /* indicates observer is Sun-centered (undefined) /? Target is aligned with Sun center (no lead or trail) The S-O-T solar elongation angle is numerically the minimum separation angle of the Sun and target in the sky in any direction. It does NOT indicate the amount of separation in the leading or trailing directions, which would be defined along the equator of a spherical coordinate system. Units: DEGREES 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 *******************************************************************************