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(2018 XS4)
Classification: Apollo [NEO]          SPK-ID: 3836906
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5946208647393626 7.3513e-07  
a 2.450890714200338 4.4056e-06 au
q .9935399583408588 2.2925e-08 au
i 6.388353520233037 1.2995e-05 deg
node 266.1040232296109 5.8811e-06 deg
peri 173.7409552666061 2.6374e-05 deg
M 239.4805264240023 0.00065108 deg
tp 2459865.679547116114
(2022-Oct-13.17954712)
0.0037997 TDB
period 1401.4717451889
3.84
0.0037788
1.035e-05
d
yr
n .2568728204730782 6.9261e-07 deg/d
Q 3.908241470059817 7.0252e-06 au
  Orbit Determination Parameters
   # obs. used (total)      80  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      31 days  
   first obs. used      2018-12-13  
   last obs. used      2019-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .29094  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:07  

Additional Information
 Earth MOID = .0113719 au 
 Jupiter MOID = 1.3846 au 
 T_jup = 3.220 
[ 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 25.2   .49269 MPO467280 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
1900-Nov-05 18:01 22:46 Jupiter 1.37639700256174 1.3761156260431 1.37667850853537 3.31373289666488 3.12250595580746 2415329.250890979 1366.30515550029 25902.5262508836 5.51659306883066 -54.2524958470446 3902637.62944355 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1912-Aug-23 05:41 15:30 Jupiter 1.39865079366398 1.39796461224359 1.39933711698279 3.36246787221777 3.17726152170066 2419637.736993774 930.456680409033 41120.9740458921 20.582846295264 -39.7673466114414 1758021.41272437 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1924-May-28 22:31 11:30 Jupiter 1.47138526075218 1.47041912574417 1.47235155703006 3.49758993200843 3.32893507149921 2423934.437907905 689.859638720282 54220.8983883548 31.6903166715086 -35.7544109449573 1277055.81049421 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1936-Feb-14 04:30 08:58 Jupiter 1.62821020815296 1.62706272248554 1.62935788972951 3.82316257152941 3.68458114229801 2428212.687816689 537.824381819597 64010.6870744443 44.6550976564209 -33.6639746669308 1088304.59080446 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1938-Jan-26 02:32 08:17 Earth 0.408863667964902 0.403160047798453 0.414567803143987 18.8357161404148 18.8353701566755 2428924.605441779 497.403455387585 285348.301038941 9.18216554431433 4.61627593506412 456926.743982278 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1941-Nov-01 12:31 09:17 Earth 0.276852710601989 0.272017796044594 0.281692782345544 14.6490980752624 14.6484410797106 2430300.021246024 557.369297186427 248476.571944777 14.289732934408 -13.8852979436165 577236.173277326 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1947-Oct-08 01:39 05:02 Jupiter 1.92579893568282 1.92491300066222 1.92668496644184 4.43569137186561 4.33540074781808 2432466.568553662 302.345675682593 49213.3604383643 62.4551125922022 -31.8308174331785 984970.852808278 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1968-Dec-27 15:48 07:06 Earth 0.0493468790658734 0.0481629678018074 0.0505313931000909 8.962187181249 8.95616041004642 2440218.158513062 426.230112709711 59675.2846007164 6.98920147483263 -8.36788077722852 140773.973230395 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
1995-Oct-25 16:40 02:02 Earth 0.271372756396523 0.270277144932411 0.272468744546057 16.2630137078706 16.2624099634306 2450016.194468245 122.170813446623 56921.5740466121 16.3780608114389 -16.273580367212 600387.046319677 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2018-Dec-16 00:12 < 00:01 Moon 0.00767704562160902 0.00767701126471994 0.00767707997850072 8.32714538952376 8.32663271483518 2458468.508593300 0.0173375239119928 1.7298762642257 0.762740159850607 -8.88852626037426 675392.940890623 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2018-Dec-16 07:32 < 00:01 Earth 0.00709939142466198 0.00709935561275693 0.00709942723656583 8.55823080235771 8.51426406490643 2458468.813853268 0.0146528088289248 1.7805549248923 0.794056043557799 -2.03027303336171 467986.515571897 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2042-Jan-29 06:40 01:46 Earth 0.361466769387501 0.36031307321404 0.362620520441238 18.5652504476502 18.5648533952634 2466913.777599916 106.251971825683 57958.6591571107 11.2340404860048 6.9720809065462 505971.660622434 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2045-Oct-23 07:38 01:58 Earth 0.39498126658848 0.393715092608891 0.396247584163458 18.7301241796545 18.7297640164203 2468276.817783842 117.64995722624 64249.6674658261 16.1151728256941 -10.6591975368836 580894.219764437 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2055-Sep-01 14:48 02:02 Jupiter 1.75616588044371 1.75581725232422 1.75651451215366 4.37511806764916 4.26345295591388 2471877.116453015 121.967725413404 17847.9122109882 8.91299379835516 -24.1205516794599 5180594.41398777 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2067-May-07 05:37 02:36 Jupiter 1.5064168243918 1.50614131322087 1.50669233741198 3.72994996664942 3.57602769984943 2476142.734307077 155.713288161754 14011.5832453551 5.14401381937915 -28.1960452073558 2519795.70476669 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2077-Jan-18 09:19 03:36 Earth 0.32982936223005 0.327595575850542 0.332063192553119 15.4337285630303 15.4332051318996 2479686.888244627 216.34521594797 111552.654543008 7.82118997806715 3.13151598768397 280948.394107678 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2079-Jan-26 05:11 03:23 Jupiter 1.39611793694432 1.39595004618449 1.39628582895462 3.44328403467297 3.26233170509547 2480424.716318001 203.020053705599 8645.29377011736 14.9799692150113 -30.9152146902638 1705929.15716049 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2080-Nov-28 13:48 07:28 Earth 0.125696809759005 0.123941263432524 0.12745286124479 8.32990830676151 8.32736315177403 2481097.074899746 447.879640543269 88451.9455054505 9.2050353483329 -8.28424139473309 222327.635119171 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2090-Oct-21 22:38 03:43 Jupiter 1.37406220210503 1.37405598195778 1.37406842234834 3.34601526575149 3.15641324170911 2484711.443200818 223.382515785584 795.849905792712 12.4534578398915 79.8304486832034 942558.274034546 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2102-Jul-13 02:57 04:40 Jupiter 1.43024495691436 1.42995882349506 1.4305310965623 3.4233337638515 3.24573105533068 2488992.623027803 280.087392636013 15099.0946382952 40.6556910717514 -35.6209213415274 1051866.13418083 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2114-Mar-17 07:59 06:38 Jupiter 1.60012132803579 1.59933216119371 1.60091057636405 3.73945150220049 3.59510774240208 2493257.832385310 398.164122124888 43440.9187515568 52.8793241932829 -33.9407543209426 1095844.5994421 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2120-Jan-03 01:43 17:20 Earth 0.101845804393709 0.0976752795762002 0.106017648528697 8.88204584394249 8.87909987453592 2495375.571484807 1040.27103513969 208801.987207078 6.24378323952632 -5.16732016754948 180738.653210873 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2125-Oct-29 16:10 05:49 Jupiter 1.92784731948849 1.92679336689345 1.92890139913853 4.38739017384134 4.28607849825533 2497502.173813468 349.278823345258 58223.5133766698 65.8712011401066 -32.6269320141937 1277415.09115987 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2147-Jan-24 05:56 02:28 Earth 0.2343220684827 0.232878045990741 0.23576635985523 14.1751944551349 14.174392255559 2505258.747262906 148.205278166429 73093.9930760035 11.3527686960826 9.87787305005619 433405.598531798 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2170-Feb-02 23:56 04:37 Earth 0.334415645228604 0.331766564163151 0.337065290217538 17.8294528883597 17.8290060060165 2513669.497255114 277.210158931095 133876.063192271 13.582097170703 9.31899675681594 510106.256604166 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
2193-Feb-04 02:57 09:04 Earth 0.361191200176809 0.355632561183063 0.366752033652544 18.5955313386749 18.5951346304211 2522071.622577880 543.936338384778 280773.735051612 13.2948608543321 9.10604320535635 556378.998386745 T 9 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:08 2021-Apr-15 20:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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