API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* JPL/HORIZONS 1I/'Oumuamua (A/2017 U1) 2024-Apr-27 00:08:50 Rec #:50455050 (+COV) Soln.date: 2018-Jun-26_12:17:57 # obs: 207 (2017-2018) NOTE: This orbit solution includes non-gravitational perturbations as described in Micheli et al. (2018): http://dx.doi.org/10.1038/s41586-018-0254-4 The behavior of these accelerations outside the observed data arc from 2017 October 14 to 2018 January 2 can only be assumed. Predictions outside this time interval, especially prior to October 2017, could be much more uncertain than reported here. IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458080.5 ! 2017-Nov-23.00 (TDB) Residual RMS= .063527 EC= 1.201133796102373 QR= .2559115812959116 TP= 2458006.0073213754 OM= 24.59690955523242 W= 241.8105360304898 IN= 122.7417062847286 A= -1.27234500742808 MA= 51.15761979369358 ADIST= 9.999999E99 PER= 9.999999E99 N= .686746949 ANGMOM= .012910695 DAN= 1.30212 DDN= .35938 L= 159.3364991 B= -47.84677 MOID= .0958212 TP= 2017-Sep-09.5073213754 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 7.937 H= 22.08 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 2.790193367004E-7 A2= 1.441264152527E-8 A3= 1.573922634125E-8 Non-standard or simulated/proxy model: ALN= .04083733261 NK= 2.6 NM= 2. NN= 3. R0= 5. ASTEROID comments: 1: soln ref.= JPL#16 2: source=ORB; Sol. 7c, Micheli et al. 2018 ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Sat Apr 27 00:08:51 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 1I/'Oumuamua (A/2017 U1) {source: JPL#16} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2017-Aug-09 12:00:00.0000 UT Stop time : A.D. 2017-Aug-09 13:00:00.0000 UT Step-size : 120 steps ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 0.0, 0.0, -695700.0 {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 : IAU_SUN {East-longitude positive} Center radii : 695700.0, 695700.0, 695700.0 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : None 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.240426.p240720 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-26. PREDICTS-> 2024-JUL-19 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 n.a. , 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= 2458080.5 ! 2017-Nov-23.00 (TDB) Residual RMS= .063527 EC= 1.201133796102373 QR= .2559115812959116 TP= 2458006.0073213754 OM= 24.59690955523242 W= 241.8105360304898 IN= 122.7417062847286 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 1.889136186533479E+00 Y= 5.222899434623107E-01 Z= 5.088057830311858E-01 VX= 2.106502285864550E-02 VY= 3.535022471254454E-04 VZ= 8.998631872968255E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 7.937 H= 22.08 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 2.790193367004E-7 A2= 1.441264152527E-8 A3= 1.573922634125E-8 Non-standard or simulated/proxy model: ALN= .04083733261 NK= 2.6 NM= 2. NN= 3. R0= 5. ********************************************************************************** Date__(UT)__HR:MN:SC.fff r rdot VmagSn VmagOb ********************************************************************************** $$SOE 2017-Aug-09 12:00:00.000 1.000654788505 -44.3809921 49.6844586 49.6844586 2017-Aug-09 12:00:30.000 1.000645887121 -44.3810697 49.6846171 49.6846172 2017-Aug-09 12:01:00.000 1.000636985722 -44.3811472 49.6847757 49.6847758 2017-Aug-09 12:01:30.000 1.000628084307 -44.3812248 49.6849343 49.6849344 2017-Aug-09 12:02:00.000 1.000619182876 -44.3813023 49.6850929 49.6850930 2017-Aug-09 12:02:30.000 1.000610281430 -44.3813798 49.6852515 49.6852516 2017-Aug-09 12:03:00.000 1.000601379969 -44.3814574 49.6854101 49.6854102 2017-Aug-09 12:03:30.000 1.000592478491 -44.3815349 49.6855687 49.6855688 2017-Aug-09 12:04:00.000 1.000583576999 -44.3816124 49.6857273 49.6857274 2017-Aug-09 12:04:30.000 1.000574675490 -44.3816900 49.6858859 49.6858860 2017-Aug-09 12:05:00.000 1.000565773967 -44.3817675 49.6860445 49.6860446 2017-Aug-09 12:05:30.000 1.000556872427 -44.3818451 49.6862031 49.6862032 2017-Aug-09 12:06:00.000 1.000547970872 -44.3819226 49.6863617 49.6863618 2017-Aug-09 12:06:30.000 1.000539069302 -44.3820002 49.6865204 49.6865204 2017-Aug-09 12:07:00.000 1.000530167716 -44.3820777 49.6866790 49.6866790 2017-Aug-09 12:07:30.000 1.000521266114 -44.3821552 49.6868376 49.6868377 2017-Aug-09 12:08:00.000 1.000512364497 -44.3822328 49.6869962 49.6869963 2017-Aug-09 12:08:30.000 1.000503462864 -44.3823103 49.6871548 49.6871549 2017-Aug-09 12:09:00.000 1.000494561216 -44.3823879 49.6873135 49.6873135 2017-Aug-09 12:09:30.000 1.000485659552 -44.3824654 49.6874721 49.6874722 2017-Aug-09 12:10:00.000 1.000476757872 -44.3825430 49.6876307 49.6876308 2017-Aug-09 12:10:30.000 1.000467856178 -44.3826205 49.6877894 49.6877894 2017-Aug-09 12:11:00.000 1.000458954467 -44.3826981 49.6879480 49.6879481 2017-Aug-09 12:11:30.000 1.000450052741 -44.3827756 49.6881067 49.6881067 2017-Aug-09 12:12:00.000 1.000441150999 -44.3828531 49.6882653 49.6882654 2017-Aug-09 12:12:30.000 1.000432249242 -44.3829307 49.6884239 49.6884240 2017-Aug-09 12:13:00.000 1.000423347469 -44.3830082 49.6885826 49.6885827 2017-Aug-09 12:13:30.000 1.000414445681 -44.3830858 49.6887413 49.6887413 2017-Aug-09 12:14:00.000 1.000405543877 -44.3831633 49.6888999 49.6889000 2017-Aug-09 12:14:30.000 1.000396642058 -44.3832409 49.6890586 49.6890586 2017-Aug-09 12:15:00.000 1.000387740223 -44.3833184 49.6892172 49.6892173 2017-Aug-09 12:15:30.000 1.000378838372 -44.3833960 49.6893759 49.6893759 2017-Aug-09 12:16:00.000 1.000369936506 -44.3834735 49.6895345 49.6895346 2017-Aug-09 12:16:30.000 1.000361034625 -44.3835511 49.6896932 49.6896933 2017-Aug-09 12:17:00.000 1.000352132727 -44.3836287 49.6898519 49.6898519 2017-Aug-09 12:17:30.000 1.000343230815 -44.3837062 49.6900106 49.6900106 2017-Aug-09 12:18:00.000 1.000334328886 -44.3837838 49.6901692 49.6901693 2017-Aug-09 12:18:30.000 1.000325426943 -44.3838613 49.6903279 49.6903280 2017-Aug-09 12:19:00.000 1.000316524983 -44.3839389 49.6904866 49.6904867 2017-Aug-09 12:19:30.000 1.000307623008 -44.3840164 49.6906453 49.6906453 2017-Aug-09 12:20:00.000 1.000298721018 -44.3840940 49.6908040 49.6908040 2017-Aug-09 12:20:30.000 1.000289819012 -44.3841715 49.6909627 49.6909627 2017-Aug-09 12:21:00.000 1.000280916990 -44.3842491 49.6911213 49.6911214 2017-Aug-09 12:21:30.000 1.000272014953 -44.3843266 49.6912800 49.6912801 2017-Aug-09 12:22:00.000 1.000263112900 -44.3844042 49.6914387 49.6914388 2017-Aug-09 12:22:30.000 1.000254210832 -44.3844818 49.6915974 49.6915975 2017-Aug-09 12:23:00.000 1.000245308748 -44.3845593 49.6917561 49.6917562 2017-Aug-09 12:23:30.000 1.000236406648 -44.3846369 49.6919148 49.6919149 2017-Aug-09 12:24:00.000 1.000227504533 -44.3847144 49.6920735 49.6920736 2017-Aug-09 12:24:30.000 1.000218602403 -44.3847920 49.6922323 49.6922323 2017-Aug-09 12:25:00.000 1.000209700257 -44.3848696 49.6923910 49.6923910 2017-Aug-09 12:25:30.000 1.000200798095 -44.3849471 49.6925497 49.6925497 2017-Aug-09 12:26:00.000 1.000191895918 -44.3850247 49.6927084 49.6927085 2017-Aug-09 12:26:30.000 1.000182993725 -44.3851022 49.6928671 49.6928672 2017-Aug-09 12:27:00.000 1.000174091517 -44.3851798 49.6930258 49.6930259 2017-Aug-09 12:27:30.000 1.000165189293 -44.3852574 49.6931846 49.6931846 2017-Aug-09 12:28:00.000 1.000156287053 -44.3853349 49.6933433 49.6933433 2017-Aug-09 12:28:30.000 1.000147384798 -44.3854125 49.6935020 49.6935021 2017-Aug-09 12:29:00.000 1.000138482528 -44.3854901 49.6936607 49.6936608 2017-Aug-09 12:29:30.000 1.000129580241 -44.3855676 49.6938195 49.6938195 2017-Aug-09 12:30:00.000 1.000120677940 -44.3856452 49.6939782 49.6939783 2017-Aug-09 12:30:30.000 1.000111775623 -44.3857228 49.6941370 49.6941370 2017-Aug-09 12:31:00.000 1.000102873290 -44.3858003 49.6942957 49.6942958 2017-Aug-09 12:31:30.000 1.000093970941 -44.3858779 49.6944545 49.6944545 2017-Aug-09 12:32:00.000 1.000085068577 -44.3859555 49.6946132 49.6946133 2017-Aug-09 12:32:30.000 1.000076166198 -44.3860330 49.6947719 49.6947720 2017-Aug-09 12:33:00.000 1.000067263803 -44.3861106 49.6949307 49.6949308 2017-Aug-09 12:33:30.000 1.000058361392 -44.3861882 49.6950895 49.6950895 2017-Aug-09 12:34:00.000 1.000049458966 -44.3862657 49.6952482 49.6952483 2017-Aug-09 12:34:30.000 1.000040556524 -44.3863433 49.6954070 49.6954070 2017-Aug-09 12:35:00.000 1.000031654067 -44.3864209 49.6955657 49.6955658 2017-Aug-09 12:35:30.000 1.000022751594 -44.3864984 49.6957245 49.6957246 2017-Aug-09 12:36:00.000 1.000013849106 -44.3865760 49.6958833 49.6958833 2017-Aug-09 12:36:30.000 1.000004946602 -44.3866536 49.6960420 49.6960421 2017-Aug-09 12:37:00.000 0.999996044082 -44.3867312 49.6962008 49.6962009 2017-Aug-09 12:37:30.000 0.999987141547 -44.3868087 49.6963596 49.6963597 2017-Aug-09 12:38:00.000 0.999978238996 -44.3868863 49.6965184 49.6965184 2017-Aug-09 12:38:30.000 0.999969336430 -44.3869639 49.6966772 49.6966772 2017-Aug-09 12:39:00.000 0.999960433848 -44.3870414 49.6968359 49.6968360 2017-Aug-09 12:39:30.000 0.999951531251 -44.3871190 49.6969947 49.6969948 2017-Aug-09 12:40:00.000 0.999942628638 -44.3871966 49.6971535 49.6971536 2017-Aug-09 12:40:30.000 0.999933726010 -44.3872742 49.6973123 49.6973124 2017-Aug-09 12:41:00.000 0.999924823366 -44.3873517 49.6974711 49.6974712 2017-Aug-09 12:41:30.000 0.999915920706 -44.3874293 49.6976299 49.6976300 2017-Aug-09 12:42:00.000 0.999907018031 -44.3875069 49.6977887 49.6977888 2017-Aug-09 12:42:30.000 0.999898115340 -44.3875845 49.6979475 49.6979476 2017-Aug-09 12:43:00.000 0.999889212634 -44.3876621 49.6981063 49.6981064 2017-Aug-09 12:43:30.000 0.999880309912 -44.3877396 49.6982651 49.6982652 2017-Aug-09 12:44:00.000 0.999871407175 -44.3878172 49.6984239 49.6984240 2017-Aug-09 12:44:30.000 0.999862504422 -44.3878948 49.6985827 49.6985828 2017-Aug-09 12:45:00.000 0.999853601653 -44.3879724 49.6987416 49.6987416 2017-Aug-09 12:45:30.000 0.999844698869 -44.3880500 49.6989004 49.6989004 2017-Aug-09 12:46:00.000 0.999835796069 -44.3881275 49.6990592 49.6990593 2017-Aug-09 12:46:30.000 0.999826893254 -44.3882051 49.6992180 49.6992181 2017-Aug-09 12:47:00.000 0.999817990423 -44.3882827 49.6993768 49.6993769 2017-Aug-09 12:47:30.000 0.999809087577 -44.3883603 49.6995357 49.6995357 2017-Aug-09 12:48:00.000 0.999800184715 -44.3884379 49.6996945 49.6996946 2017-Aug-09 12:48:30.000 0.999791281838 -44.3885154 49.6998533 49.6998534 2017-Aug-09 12:49:00.000 0.999782378945 -44.3885930 49.7000122 49.7000122 2017-Aug-09 12:49:30.000 0.999773476036 -44.3886706 49.7001710 49.7001711 2017-Aug-09 12:50:00.000 0.999764573112 -44.3887482 49.7003299 49.7003299 2017-Aug-09 12:50:30.000 0.999755670172 -44.3888258 49.7004887 49.7004888 2017-Aug-09 12:51:00.000 0.999746767217 -44.3889034 49.7006475 49.7006476 2017-Aug-09 12:51:30.000 0.999737864246 -44.3889810 49.7008064 49.7008065 2017-Aug-09 12:52:00.000 0.999728961260 -44.3890585 49.7009653 49.7009653 2017-Aug-09 12:52:30.000 0.999720058258 -44.3891361 49.7011241 49.7011242 2017-Aug-09 12:53:00.000 0.999711155240 -44.3892137 49.7012830 49.7012830 2017-Aug-09 12:53:30.000 0.999702252207 -44.3892913 49.7014418 49.7014419 2017-Aug-09 12:54:00.000 0.999693349159 -44.3893689 49.7016007 49.7016007 2017-Aug-09 12:54:30.000 0.999684446094 -44.3894465 49.7017595 49.7017596 2017-Aug-09 12:55:00.000 0.999675543015 -44.3895241 49.7019184 49.7019185 2017-Aug-09 12:55:30.000 0.999666639919 -44.3896017 49.7020773 49.7020773 2017-Aug-09 12:56:00.000 0.999657736808 -44.3896793 49.7022362 49.7022362 2017-Aug-09 12:56:30.000 0.999648833682 -44.3897568 49.7023950 49.7023951 2017-Aug-09 12:57:00.000 0.999639930540 -44.3898344 49.7025539 49.7025540 2017-Aug-09 12:57:30.000 0.999631027382 -44.3899120 49.7027128 49.7027129 2017-Aug-09 12:58:00.000 0.999622124209 -44.3899896 49.7028717 49.7028717 2017-Aug-09 12:58:30.000 0.999613221020 -44.3900672 49.7030306 49.7030306 2017-Aug-09 12:59:00.000 0.999604317816 -44.3901448 49.7031895 49.7031895 2017-Aug-09 12:59:30.000 0.999595414596 -44.3902224 49.7033483 49.7033484 2017-Aug-09 13:00:00.000 0.999586511361 -44.3903000 49.7035072 49.7035073 $$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 'VmagSn VmagOb' = Magnitude of target centers' velocity with respect to the Sun ("VmagSn") and the observer ("VmagOb") at the time light left the target center to be observed (print time minus down-leg light-time). These are absolute values of the velocity vectors (total speeds) and do NOT indicate direction of motion. Units: 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 **********************************************************************************