******************************************************************************* JPL/HORIZONS 1I/'Oumuamua (A/2017 U1) 2024-May-01 15:01:41 Rec #:50455914 (+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 / WWW_USER Wed May 1 15:01:41 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 1I/'Oumuamua (A/2017 U1) {source: JPL#16} Center body name: Earth (399) {source: DE441} Center-site name: BODY CENTER ******************************************************************************* Start time : A.D. 2018-Nov-15 00:00:00.0000 TDB Stop time : A.D. 2018-Dec-15 00:00:00.0000 TDB Step-size : 1440 minutes ******************************************************************************* Center geodetic : 0.0, 0.0, 0.0 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center radii : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Small perturbers: Yes {source: SB441-N16} Output units : KM-S Calendar mode : Mixed Julian/Gregorian Output type : GEOMETRIC cartesian states Output format : 6 (LT, range, and range-rate) EOP file : eop.240501.p240725 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-01. PREDICTS-> 2024-JUL-24 Reference frame : Ecliptic of J2000.0 ******************************************************************************* 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. ******************************************************************************* JDTDB, Calendar Date (TDB), LT, RG, RR, ************************************************************************************************************************** $$SOE 2458437.500000000, A.D. 2018-Nov-15 00:00:00.0000, 3.995161731626656E+03, 1.197719355631891E+09, 5.033554106669126E+01, 2458438.500000000, A.D. 2018-Nov-16 00:00:00.0000, 4.009720773881244E+03, 1.202084046695520E+09, 5.069761958964973E+01, 2458439.500000000, A.D. 2018-Nov-17 00:00:00.0000, 4.024382993739556E+03, 1.206479669626580E+09, 5.105155030480345E+01, 2458440.500000000, A.D. 2018-Nov-18 00:00:00.0000, 4.039146038375894E+03, 1.210905519065671E+09, 5.139730377199660E+01, 2458441.500000000, A.D. 2018-Nov-19 00:00:00.0000, 4.054007549041502E+03, 1.215360887877707E+09, 5.173486909890807E+01, 2458442.500000000, A.D. 2018-Nov-20 00:00:00.0000, 4.068965167062472E+03, 1.219845068950039E+09, 5.206425835422881E+01, 2458443.500000000, A.D. 2018-Nov-21 00:00:00.0000, 4.084016540908126E+03, 1.224357357311505E+09, 5.238550920646792E+01, 2458444.500000000, A.D. 2018-Nov-22 00:00:00.0000, 4.099159333469336E+03, 1.228897052314414E+09, 5.269868330607907E+01, 2458445.500000000, A.D. 2018-Nov-23 00:00:00.0000, 4.114391227963037E+03, 1.233463459404677E+09, 5.300385805173475E+01, 2458446.500000000, A.D. 2018-Nov-24 00:00:00.0000, 4.129709930378453E+03, 1.238055890855165E+09, 5.330111089955764E+01, 2458447.500000000, A.D. 2018-Nov-25 00:00:00.0000, 4.145113166545101E+03, 1.242673664886719E+09, 5.359049839001441E+01, 2458448.500000000, A.D. 2018-Nov-26 00:00:00.0000, 4.160598673018653E+03, 1.247316102935801E+09, 5.387203532228870E+01, 2458449.500000000, A.D. 2018-Nov-27 00:00:00.0000, 4.176164182795113E+03, 1.251982525371708E+09, 5.414568071497253E+01, 2458450.500000000, A.D. 2018-Nov-28 00:00:00.0000, 4.191807408533545E+03, 1.256672246466882E+09, 5.441133493454137E+01, 2458451.500000000, A.D. 2018-Nov-29 00:00:00.0000, 4.207526026595810E+03, 1.261384569612131E+09, 5.466884781800400E+01, 2458452.500000000, A.D. 2018-Nov-30 00:00:00.0000, 4.223317664553052E+03, 1.266118783571179E+09, 5.491803375082687E+01, 2458453.500000000, A.D. 2018-Dec-01 00:00:00.0000, 4.239179893418692E+03, 1.270874160152168E+09, 5.515868861100437E+01, 2458454.500000000, A.D. 2018-Dec-02 00:00:00.0000, 4.255110224573518E+03, 1.275649953285827E+09, 5.539060498179074E+01, 2458455.500000000, A.D. 2018-Dec-03 00:00:00.0000, 4.271106110643322E+03, 1.280445399288581E+09, 5.561358431414894E+01, 2458456.500000000, A.D. 2018-Dec-04 00:00:00.0000, 4.287164949461894E+03, 1.285259718050627E+09, 5.582744628267405E+01, 2458457.500000000, A.D. 2018-Dec-05 00:00:00.0000, 4.303284090405733E+03, 1.290092114935029E+09, 5.603203597745124E+01, 2458458.500000000, A.D. 2018-Dec-06 00:00:00.0000, 4.319460842527070E+03, 1.294941783215941E+09, 5.622722918456905E+01, 2458459.500000000, A.D. 2018-Dec-07 00:00:00.0000, 4.335692483904436E+03, 1.299807906881836E+09, 5.641293547916649E+01, 2458460.500000000, A.D. 2018-Dec-08 00:00:00.0000, 4.351976271514071E+03, 1.304689663594878E+09, 5.658909868667860E+01, 2458461.500000000, A.D. 2018-Dec-09 00:00:00.0000, 4.368309450834667E+03, 1.309586227570355E+09, 5.675569460098247E+01, 2458462.500000000, A.D. 2018-Dec-10 00:00:00.0000, 4.384689264453024E+03, 1.314496772156585E+09, 5.691272647165567E+01, 2458463.500000000, A.D. 2018-Dec-11 00:00:00.0000, 4.401112959170743E+03, 1.319420471965450E+09, 5.706021932112846E+01, 2458464.500000000, A.D. 2018-Dec-12 00:00:00.0000, 4.417577791457460E+03, 1.324356504507243E+09, 5.719821436080374E+01, 2458465.500000000, A.D. 2018-Dec-13 00:00:00.0000, 4.434081031445966E+03, 1.329304051388361E+09, 5.732676461175021E+01, 2458466.500000000, A.D. 2018-Dec-14 00:00:00.0000, 4.450619965930448E+03, 1.334262299210165E+09, 5.744593244998307E+01, 2458467.500000000, A.D. 2018-Dec-15 00:00:00.0000, 4.467191900974587E+03, 1.339230440350864E+09, 5.755578936856143E+01, $$EOE ************************************************************************************************************************** TIME Barycentric Dynamical Time ("TDB" or T_eph) output was requested. This continuous coordinate time is equivalent to the relativistic proper time of a clock at rest in a reference frame co-moving with the solar system barycenter but outside the system's gravity well. It is the independent variable in the solar system relativistic equations of motion. TDB runs at a uniform rate of one SI second per second and is independent of irregularities in Earth's rotation. 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. REFERENCE FRAME AND COORDINATES Ecliptic at the standard reference epoch Reference epoch: J2000.0 X-Y plane: adopted Earth orbital plane at the reference epoch Note: IAU76 obliquity of 84381.448 arcseconds wrt ICRF X-Y plane X-axis : ICRF Z-axis : perpendicular to the X-Y plane in the directional (+ or -) sense of Earth's north pole at the reference epoch. Symbol meaning: JDTDB Julian Day Number, Barycentric Dynamical Time LT One-way down-leg Newtonian light-time (sec) RG Range; distance from coordinate center (km) RR Range-rate; radial velocity wrt coord. center (km/sec) ABERRATIONS AND CORRECTIONS Geometric state vectors have NO corrections or aberrations applied. 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 MAKE_EPHEM = 'YES' TABLE_TYPE = 'VECTORS' OUT_UNITS = 'KM-S' REFTemplateANE = 'ECLIPTIC' REF_SYSTEM = 'J2000' VECT_CORR = 'NONE' VEC_LABELS = 'YES' VEC_DELTA_T = 'NO' CSV_FORMAT = 'YES' OBJ_DATA = 'YES' VEC_TABLE = '6' START_TIME = '2018-11-15 00:00' STOP_TIME = '2018-12-15 00:00' STEP_SIZE = '1 d' COMMAND = 'DES=2017 U1' CENTER = '500'