******************************************************************************* JPL/HORIZONS 90377 Sedna (2003 VB12) 2024-Apr-27 03:42:04 Rec #: 90377 (+COV) Soln.date: 2024-Apr-16_07:52:35 # obs: 539 (1990-2024) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2457983.5 ! 2017-Aug-18.00 (TDB) Residual RMS= .093867 EC= .8438779805311616 QR= 76.0597257185749 TP= 2479559.4597022175 OM= 144.4607791912206 W= 311.5900355154116 IN= 11.92895319676847 A= 487.1812828026878 MA= 358.0224006791369 ADIST= 898.3028398868007 PER= 10753.35774 N= 9.1658E-5 ANGMOM= .203715891 DAN= 89.89116 DDN= 318.85639 L= 96.672585 B= -8.893175100000001 MOID= 75.08709717 TP= 2076-Sep-12.9597022175 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 10.273 H= 1.5 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#42, OCC=1 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Apr 27 03:42:04 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: 90377 Sedna (2003 VB12) {source: JPL#42} Center body name: Sun (10) {source: DE441} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 1746-Jul-01 00:00:00.0000 UT Stop time : A.D. 1746-Sep-01 00:00:00.0000 UT Step-size : 30 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= 2457983.5 ! 2017-Aug-18.00 (TDB) Residual RMS= .093867 EC= .8438779805311616 QR= 76.0597257185749 TP= 2479559.4597022175 OM= 144.4607791912206 W= 311.5900355154116 IN= 11.92895319676847 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X= 4.687788227372414E+01 Y= 7.036772893745980E+01 Z= 1.129538098354908E+01 VX=-2.409714482710369E-03 VY= 5.745274591925052E-04 VZ= 4.400467165865281E-04 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 10.273 H= 1.5 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ********************************************************************************** Date__(UT)__HR:MN:SC.fff r rdot VmagSn VmagOb ********************************************************************************** $$SOE 1746-Jul-01 00:00:00.000 200.0411753307 -1.9862708 2.6584235 2.6584474 1746-Jul-03 01:36:00.000 200.0388045084 -1.9862668 2.6584607 2.6584845 1746-Jul-05 03:12:00.000 200.0364336831 -1.9862696 2.6585018 2.6585255 1746-Jul-07 04:48:00.000 200.0340628546 -1.9862721 2.6585428 2.6585666 1746-Jul-09 06:24:00.000 200.0316920232 -1.9862745 2.6585839 2.6586078 1746-Jul-11 08:00:00.000 200.0293211890 -1.9862768 2.6586251 2.6586492 1746-Jul-13 09:36:00.000 200.0269503520 -1.9862791 2.6586665 2.6586911 1746-Jul-15 11:12:00.000 200.0245795122 -1.9862816 2.6587082 2.6587333 1746-Jul-17 12:48:00.000 200.0222086693 -1.9862843 2.6587505 2.6587761 1746-Jul-19 14:24:00.000 200.0198378229 -1.9862874 2.6587932 2.6588195 1746-Jul-21 16:00:00.000 200.0174669727 -1.9862908 2.6588365 2.6588634 1746-Jul-23 17:36:00.000 200.0150961182 -1.9862946 2.6588803 2.6589078 1746-Jul-25 19:12:00.000 200.0127252589 -1.9862989 2.6589247 2.6589528 1746-Jul-27 20:48:00.000 200.0103543942 -1.9863036 2.6589696 2.6589983 1746-Jul-29 22:24:00.000 200.0079835237 -1.9863087 2.6590151 2.6590443 1746-Aug-01 00:00:00.000 200.0056126466 -1.9863144 2.6590610 2.6590909 1746-Aug-03 01:36:00.000 200.0032417626 -1.9863205 2.6591075 2.6591378 1746-Aug-05 03:12:00.000 200.0008708709 -1.9863271 2.6591544 2.6591853 1746-Aug-07 04:48:00.000 199.9984999711 -1.9863342 2.6592018 2.6592332 1746-Aug-09 06:24:00.000 199.9961290625 -1.9863418 2.6592496 2.6592815 1746-Aug-11 08:00:00.000 199.9937581445 -1.9863499 2.6592979 2.6593302 1746-Aug-13 09:36:00.000 199.9913872166 -1.9863584 2.6593465 2.6593793 1746-Aug-15 11:12:00.000 199.9890162783 -1.9863675 2.6593956 2.6594288 1746-Aug-17 12:48:00.000 199.9866453288 -1.9863770 2.6594451 2.6594786 1746-Aug-19 14:24:00.000 199.9842743677 -1.9863870 2.6594949 2.6595289 1746-Aug-21 16:00:00.000 199.9819033944 -1.9863975 2.6595451 2.6595794 1746-Aug-23 17:36:00.000 199.9795324082 -1.9864085 2.6595956 2.6596303 1746-Aug-25 19:12:00.000 199.9771614086 -1.9864200 2.6596465 2.6596815 1746-Aug-27 20:48:00.000 199.9747903949 -1.9864320 2.6596976 2.6597331 1746-Aug-29 22:24:00.000 199.9724193667 -1.9864445 2.6597491 2.6597849 1746-Sep-01 00:00:00.000 199.9700483233 -1.9864574 2.6598009 2.6598369 $$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 ********************************************************************************** !$$SOF COMMAND = 'Sedna' START_TIME = '1746-07-01' STOP_TIME = '1746-09-01' STEP_SIZE = '30' QUANTITIES = '19,22' CENTER = '@Sun'