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(2018 XE4)
Classification: Apollo [NEO]          SPK-ID: 3836890
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4459950491840534 4.8196e-07  
a 1.587195192974303 9.8621e-09 au
q .8793139948190357 7.6142e-07 au
i 2.997269422111324 6.725e-05 deg
node 264.3021717675096 6.6916e-05 deg
peri 237.7954914905862 0.00034273 deg
M 239.0972483771825 0.00013411 deg
tp 2459245.788744561645
(2021-Jan-31.28874456)
0.00027416 TDB
period 730.3716983851245
2.00
6.8073e-06
1.864e-08
d
yr
n .4928997122916614 4.594e-09 deg/d
Q 2.295076391129571 1.4261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      25  
   data-arc span      738 days (2.02 yr)  
   first obs. used      2018-12-12  
   last obs. used      2020-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .78914  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-20 05:49:38  

Additional Information
 Earth MOID = .00774911 au 
 Jupiter MOID = 2.74242 au 
 T_jup = 4.266 
[ 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 26.4   .25724 E2018-XC6 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
1963-Oct-11 23:52 00:02 Mars 0.0300755233023574 0.030069075105989 0.0300819714989225 13.0869670770367 13.0862396891679 2438314.494275061 2.0865030123418 321.569105551395 57.9167600064244 0.686361153867763 14072.9683485598 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
1995-May-06 22:00 00:04 Earth 0.455080346842097 0.455008764704564 0.455151929245944 23.1444661804384 23.1442132043451 2449844.416945162 3.8236798749283 3611.48741986956 26.4070795943501 8.74820761322646 349355.526430053 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
1997-May-01 16:35 00:04 Earth 0.364241575871028 0.36416566985303 0.364317482402297 20.465660011227 20.4653025730981 2450570.191311473 4.29242303246116 3846.06063777406 28.1934241527911 10.2174962678845 310287.054581109 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
1999-Apr-27 15:11 00:05 Earth 0.282532230017934 0.282453319177176 0.28261114192269 18.0280035252548 18.027480403205 2451296.132437734 4.9106423690835 4028.862480927 32.4216410065914 12.3998304273705 256604.996611529 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
1999-Jul-08 02:43 00:02 Mars 0.0232157670826361 0.023139893981227 0.0232916402972274 13.1920958601649 13.1911610471762 2451367.613087937 2.34381634784872 3784.35114440755 35.8783698808182 1.21360981086832 2161.09958167054 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2001-Apr-21 16:43 00:05 Earth 0.194113306932056 0.194042984194895 0.194183632185811 15.3399139743627 15.3390191314729 2452021.196368098 4.98732344542233 3675.9210039614 38.0784780381926 17.4579822187017 214175.147750108 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2003-Apr-16 16:28 00:05 Earth 0.117258709519226 0.117202007164806 0.11731541967854 12.9124899320391 12.9107300366743 2452746.186427775 5.32541459331658 3205.07902074412 43.4631057928785 28.0953509569431 185004.362573662 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2004-Nov-22 17:51 00:11 Earth 0.499695343285786 0.499658960144553 0.499731726636614 5.08061306083099 5.07956343188707 2453332.243958709 10.9500185723515 1884.73621982988 31.733164779229 15.9774359010488 181472.6934724 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2005-Apr-09 20:50 00:06 Earth 0.0611167327353541 0.0610904081114699 0.0611430867433329 10.744006846441 10.7399483236804 2453470.367890269 5.76049997431706 2489.68789609229 48.6507109594413 58.1859656641002 169349.093250434 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2007-Apr-02 14:24 00:07 Earth 0.0540700586932275 0.0540540214315232 0.0540861155443113 9.04779084320913 9.04234275993587 2454193.100002845 7.25393950493116 1813.00513552084 52.2118090961326 -63.845267840221 166216.23578931 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2009-Mar-19 20:35 00:12 Earth 0.0861025683633033 0.086080940766041 0.0861241985580048 7.91747776274818 7.91356830401268 2454910.357299574 12.2806661761264 1311.87065461692 53.0626136746952 -34.7231712311626 166150.396835257 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2011-Mar-02 10:49 00:12 Earth 0.1100889048497 0.11007843997425 0.110099369986829 7.89582484331678 7.89275895998476 2455622.950781472 11.5684678239759 587.040285587456 48.7310517207307 -27.3813853089619 145860.730664491 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2013-Feb-09 20:46 00:09 Earth 0.115303626305614 0.115302116002568 0.11530513662243 8.04116034672335 8.0382860718821 2456333.365464238 8.68365484418575 104.625457040742 37.7274551671943 -48.1179129425934 304218.837419355 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2015-Jan-22 06:07 00:06 Earth 0.0976653590334993 0.0976599131090938 0.0976708049586375 7.88171331640414 7.8782511609262 2457044.754622921 6.03228443177043 271.904551677275 49.8436973241808 2.91319163842314 54606.7926776558 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2017-Jan-04 23:37 00:02 Earth 0.0585830836955847 0.0585780116935932 0.0585881557104869 8.21043595091138 8.20489453824216 2457758.483866476 2.00995398859579 256.644516353072 23.5656426843036 -9.70918762274515 93460.2132965189 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2018-Dec-26 17:10 00:01 Earth 0.0135329883379462 0.0135309733981079 0.0135350032787237 9.45159648169309 9.43074231411113 2458479.215191481 1.00925152535822 100.640327542635 18.7557531796343 -3.41608518294878 20773.8242170178 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2020-Dec-26 04:03 00:01 Earth 0.0143738298850732 0.0143716420494834 0.0143760177216181 9.43243151989189 9.41275857709787 2459209.669005743 1.06257247882355 109.260126080378 18.9554754341342 -3.23959175671704 20403.1531943942 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2023-Jan-05 21:39 00:02 Earth 0.0590740792033662 0.0590698691230363 0.0590782892987095 8.20807459436092 8.20257767269148 2459950.402239293 1.74972659992628 215.18817314969 22.0933376965963 -12.6642573354115 133987.630391087 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2025-Jan-21 23:39 00:06 Earth 0.0966439433878438 0.0966393058313183 0.0966485809444736 7.90519271304328 7.90170435475427 2460697.485605015 5.49282680894064 231.312268760329 45.9818268429675 -1.21883207275548 64432.7862788977 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2027-Feb-10 19:33 00:08 Earth 0.113857836185166 0.113856046025336 0.113859626360762 8.05560068123459 8.0526951213535 2461447.314627738 8.11523718404197 113.631378365776 27.7751314891688 -39.676141761041 323170.911171586 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2029-Mar-01 17:26 00:11 Earth 0.10748391189208 0.107473278836384 0.107494545172461 7.92252848282611 7.91939886814201 2462197.226181028 10.7283271799342 584.617688666795 50.6675807166339 -25.0306998803423 127468.563696146 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2031-Mar-20 13:41 00:11 Earth 0.0807925872057017 0.0807712882380045 0.0808138889030223 7.9681357201877 7.96399575246495 2462946.070058765 10.9963713447415 1295.4517154818 52.5128884340173 -34.9439003172662 161490.525939721 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2033-Apr-01 12:53 00:06 Earth 0.051383831683782 0.0513694255399724 0.0513982572331219 9.1531265491385 9.14745957975232 2463689.037008282 6.43492059288857 1735.03804161296 51.083023154957 -65.5663967603942 162118.353309894 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2035-Apr-09 15:16 00:05 Earth 0.0633749365250787 0.0633454429877622 0.0634044545872852 10.9032071471397 10.8993504336853 2464427.136380862 5.36077553185333 2456.63633224072 47.3955006712615 53.2300598958625 167051.79796825 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2037-Apr-15 06:09 00:05 Earth 0.120691291366065 0.120635343153659 0.120747246109823 13.0319827763927 13.0302886174392 2465163.756277992 4.9695654205208 3121.75733362018 42.7970644323984 26.6632117155932 183023.725340444 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2039-Apr-21 10:16 00:05 Earth 0.198417109700041 0.198348891868839 0.198485329669324 15.493834879977 15.4929681447225 2465899.927475704 4.6497042379993 3553.49696608893 37.8885416179348 16.8109241162057 210829.554189024 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2041-Apr-26 02:14 00:05 Earth 0.283808265870667 0.283732880560416 0.28388365213042 18.0644007149673 18.0638809942781 2466635.593378695 4.52009346110218 3847.287397196 33.3478895891103 12.2928118041126 247741.441684367 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2043-May-01 11:03 00:05 Earth 0.371930592526452 0.371850694798843 0.372010490763537 20.6773738250508 20.6770273605732 2467370.960156298 4.50184805837749 4042.89295493255 29.7128213004516 9.78183005714435 287972.696816231 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2045-May-05 22:26 00:05 Earth 0.461555972035089 0.461472655422023 0.461639288954964 23.354889632096 23.3546424525894 2468106.434500574 4.56858893626695 4196.83584087083 27.7245009721362 8.13367726310903 317352.436408321 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2107-May-22 18:19 00:07 Mars 0.0684769594050757 0.0684167640605527 0.0685374045402434 13.1499184164526 13.1496004773745 2490767.263459369 6.88499889644205 7182.75938430598 46.2442988396524 65.2452779363078 203761.675449409 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2135-Aug-07 08:25 00:09 Mars 0.0610133027943028 0.0609990604287848 0.0610280111994633 13.7273749293844 13.7270331077366 2501070.850790945 8.64638385529781 8457.48434592751 46.9094373768282 -85.1144766924475 195136.02534675 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2151-Nov-25 18:33 00:17 Earth 0.483981757120818 0.483738311921061 0.484225202399917 24.35656805404 24.3563420223742 2507025.273050529 16.7389454642039 12143.5625631747 17.9972561008812 1.48288036551703 93575.7736659034 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2153-Nov-30 03:30 00:17 Earth 0.392420020605323 0.392172669587242 0.392667371670784 21.581729753833 21.5814151397811 2507760.645771623 17.4133161659619 12336.2702753891 14.421518229934 1.04966228054075 66131.1310403901 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2155-Dec-05 09:00 00:18 Earth 0.301614997288474 0.301366150027711 0.301863844574354 18.8724632082557 18.871995110862 2508495.874691066 18.4050598351264 12409.7665317817 10.7395422881708 0.747291623233817 47854.1955702717 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2157-Dec-10 00:00 00:20 Earth 0.21090191437129 0.210656746189007 0.211147082596575 16.1488834475761 16.1481010997956 2509231.499947864 19.9607599060793 12226.4692393036 6.63144614206595 0.864894177742637 61823.6228166783 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2159-Dec-16 02:43 00:23 Earth 0.124910429560617 0.124676331738041 0.125144528061296 13.5287768588102 13.5272000449417 2509967.613316299 22.8402266384552 11682.5476717685 2.43969582195637 2.34646545043697 265514.972721131 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2161-Dec-21 14:45 00:27 Earth 0.0507393022058257 0.0505420286993477 0.0509365981144724 11.2386753515022 11.2340018428756 2510704.114644113 26.5967753552872 9980.46868923525 4.43234298616526 9.73960118454156 318654.044623565 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2163-Oct-21 01:28 00:03 Mars 0.0951258284117768 0.0950620459786812 0.0951896361646538 14.8886477392394 14.8884455977654 2511372.561426558 3.11857960853848 4013.82725765623 50.3645645579862 -37.5782627064393 171575.018341044 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2163-Dec-28 06:41 00:16 Earth 0.0117648832086078 0.0117283835358226 0.0118018222799757 9.61574380850971 9.59216213013296 2511440.778609202 16.1295252561933 4029.82920158806 11.8827879771518 -62.9631188988651 151252.090852041 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2166-Jan-12 22:01 02:12 Earth 0.073530092942218 0.073301194087634 0.0737589966282197 7.96343456519083 7.95888289318824 2512187.417180910 131.654458025465 11453.0347699948 38.1803182312782 4.6299300432556 23920.6155779517 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2168-Feb-08 06:21 03:53 Earth 0.111373849067458 0.111284472828873 0.11146325049814 8.01497449081037 8.01198905406263 2512943.764427104 233.053200667148 5181.76942840195 82.4712363724972 30.6733330505246 86497.7891916823 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2170-Mar-06 17:40 05:21 Earth 0.104682462144409 0.104443092754328 0.104922140872469 7.88424929433061 7.88102030193826 2513701.235889568 320.523891850453 14940.4625555863 36.772094593607 -36.9335380811602 238555.412767314 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2172-Mar-30 04:45 04:14 Earth 0.059764573745369 0.0592763931704984 0.0602591817243285 8.55973456114999 8.55452452875541 2514455.697769934 254.167733340132 39449.143227144 42.7431345056772 -51.5813830840999 201117.136931329 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2173-Nov-26 09:00 04:00 Earth 0.49673089800917 0.495820622905306 0.497641175852226 4.83608221126579 4.83497291559414 2515061.874699784 239.555380434388 45429.1050854684 31.4593854124579 3.90612038455409 42268.1069655774 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2174-Apr-11 03:57 02:43 Earth 0.0586151049646905 0.0579361801708645 0.0593065626688878 10.7913650287686 10.7871518371271 2515197.664491902 163.388720826047 54726.2012108893 39.0479315321338 51.3708835357315 179250.942756939 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2176-Apr-19 07:14 02:11 Earth 0.143353938451871 0.142093255165847 0.144615859146545 13.8400935272464 13.83875050015 2515936.801729585 131.231642716714 66310.2440468796 33.7831948440473 18.4761933647149 185261.156390553 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2178-Apr-26 09:19 02:00 Earth 0.246351012204024 0.244916816282181 0.247785481761827 16.9780866093933 16.9774495536888 2516673.888234660 120.309066859168 72686.7689715391 30.2623698781557 10.2706344148379 192269.519428941 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2180-May-02 00:49 01:57 Earth 0.352979356616159 0.351447539343859 0.354511263749508 20.1746651853125 20.1742910223971 2517410.534029149 116.902535401204 76902.3192868844 29.9577416707876 6.64103885893167 179189.069631751 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2182-May-08 13:22 01:56 Earth 0.465383710275612 0.463790346155699 0.46697710685059 23.4876604210812 23.4874166603896 2518147.057002093 116.39933682056 79691.4337096802 34.1319925337826 4.41948894528893 139818.906688771 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
2192-Jan-11 04:10 01:34 Mars 0.0637049645176734 0.0630245639895111 0.0644184317028781 13.2120055256591 13.2116653762251 2521681.673674768 93.5013750451412 80291.2873245492 45.8157974740709 64.344690151922 189802.181818553 T 6 CATAB v2.0f-lin.ifort 2020-Dec-20 05:49:39 2020-Dec-20 05:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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