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(2018 WD)
Classification: Apollo [NEO]          SPK-ID: 3836267
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5176960895715679 1.6244e-05  
a 1.907056604621595 6.3096e-05 au
q .9197808578173635 6.3264e-07 au
i 16.76908123348836 0.00035235 deg
node 61.30299787814621 1.0391e-05 deg
peri 40.33319646740563 0.00014141 deg
M 195.8193550105062 0.0095977 deg
tp 2459439.195580546312
(2021-Aug-12.69558055)
0.047417 TDB
period 961.9307379793679
2.63
0.047739
0.0001307
d
yr
n .3742473192573263 1.8573e-05 deg/d
Q 2.894332351425826 9.576e-05 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      9 days  
   first obs. used      2018-11-16  
   last obs. used      2018-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .30884  
   source      ORB  
   producer      Giorgini  
   solution date      2019-Jan-04 16:49:55  

Additional Information
 Earth MOID = .0110193 au 
 Jupiter MOID = 2.41853 au 
 T_jup = 3.720 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.3   .29321 E2018W53 autocmod 2.6q

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1908-Mar-04 07:05 03:04 Earth 0.440285805141859 0.438554167964825 0.442025269070589 19.1074754521618 19.1071587303583 2418004.794972052 183.561778331526 126724.474189835 63.849046003842 -46.9278083924757 607859.996691793 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1915-Dec-01 04:40 8_06:08 Earth 0.0542993651997665 0.00163688203037985 0.124568061973289 12.5529250740437 12.5490154022183 2420832.694786286 11888.1429848663 3504781.52044821 11.3869565440872 1.7426616439235 21731.1590603382 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1923-Oct-27 02:11 3_13:25 Earth 0.437969027649969 0.373833616681469 0.502183135779586 24.065108182064 24.0648553783672 2423719.591239943 5125.19730412215 3213499.60646792 5.60594003243975 5.17708025682813 1052783.20532317 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1945-Jan-18 23:56 8_23:17 Earth 0.269658184333179 0.252666852155195 0.291770720623903 12.0761264369477 12.0753081873265 2431474.497392008 12917.4377255586 2097871.27278164 79.7827514774793 -62.0212668131647 402531.911429475 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1952-Nov-12 09:50 1_14:19 Earth 0.154353841293569 0.131074738679478 0.177635093546224 16.7779059954308 16.7768771018098 2434328.909394717 2299.25460398407 1161243.65297722 5.82082208117831 1.46343543764919 95357.1177541433 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1974-Mar-03 08:07 1_11:39 Earth 0.410580918977412 0.398068524801363 0.423564516867942 17.9909198246397 17.9905591093262 2442109.838390324 2139.09358671738 940919.247806055 66.1643338838213 -47.4707558510748 551737.803778833 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1981-Dec-02 10:57 3_22:56 Earth 0.0704074456980471 0.0389247674267231 0.101904561938954 12.2996281121257 12.2965509093312 2444940.956358277 5696.46344743227 1571078.80364367 15.5986510995187 -1.56322722545313 18371.6619701653 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
1989-Oct-29 01:04 1_12:10 Earth 0.395602724705796 0.368612311438894 0.422604803704023 23.01541845745 23.0151258152398 2447828.544408818 2169.89627236976 1350449.28508984 5.73120298622615 4.54770593953906 810781.652210347 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2011-Feb-18 06:24 1_02:50 Earth 0.33040559482532 0.326720792964394 0.334235953486624 14.0160554423429 14.0154800712067 2455610.767011104 1609.68211430829 393339.262607942 67.3782475522371 -61.5478288621078 517918.321356569 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2018-Nov-24 06:23 < 00:01 Moon 0.00961978309056572 0.00961888512689758 0.00962068105423276 13.1312153864377 13.1309559369263 2458446.766234346 0.0378666960213257 44.7775769582219 3.58112446082765 0.423394503746693 31399.8194710379 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2018-Nov-24 09:41 < 00:01 Earth 0.0116165834356339 0.0116156778366126 0.0116174890343184 13.5894834892861 13.5725946056746 2458446.903465134 0.0228880041256234 45.0507022156016 3.76144011845693 0.0641397257547693 27672.3918566767 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2040-Jan-19 20:40 5_07:48 Earth 0.265723536554465 0.255969257391581 0.277062209545498 11.8048150233457 11.8039655714842 2466173.360817383 7668.36678699102 1151133.49127025 78.7276533688131 -62.7280849790489 407280.883445026 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2047-Nov-02 20:37 1_13:19 Earth 0.323515487880056 0.296440007532173 0.350598917057265 21.1395971579349 21.1392075528871 2469017.358828646 2238.92022744462 1352708.64096619 5.73521849835184 3.39151445197061 486365.6452327 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2061-Mar-10 16:44 2_09:58 Earth 0.460369209800979 0.433077228363122 0.488939799300769 20.3122819705884 20.3119970325589 2473894.197437492 3478.24425274287 1845178.77774839 62.5560327869555 -40.8983660851739 600648.556707854 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
2068-Nov-26 10:47 4_01:32 Earth 0.0235630707103631 0.0114317216677821 0.0617846683464565 13.0500247283361 13.0413568383649 2476711.949395482 5852.20161342074 2000511.66109037 6.56200871939884 29.0427700265327 282965.116350369 T 11 CATAB v2.0e-lin.ifort 2019-Jan-04 16:51:05 2019-Jan-04 16:51
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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