Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
(2018 XC4)
Classification: Apollo [NEO]          SPK-ID: 3836892
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3105169950410485 2.0113e-06  
a 1.2677653237652 4.2113e-06 au
q .8741026450123884 8.1231e-07 au
i 2.170933014792021 5.3522e-05 deg
node 95.08363360198696 0.00044341 deg
peri 52.41316934618461 0.00067264 deg
M 245.3388433157763 0.002896 deg
tp 2459562.562108414435
(2021-Dec-14.06210841)
0.0050217 TDB
period 521.3828358093122
1.43
0.0025979
7.113e-06
d
yr
n .690471521643387 3.4405e-06 deg/d
Q 1.661428002518012 5.519e-06 au
  Orbit Determination Parameters
   # obs. used (total)      68  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      6 days  
   first obs. used      2018-12-13  
   last obs. used      2018-12-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .40516  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:04  

Additional Information
 Earth MOID = .0034806 au 
 Jupiter MOID = 3.3429 au 
 T_jup = 5.042 
[ 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 26.3   .49875 E2018Y73 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
1948-May-15 14:36 8_20:37 Earth 0.396832507269562 0.264387987355047 0.530769634581708 19.2925823110698 19.2922342794753 2432687.108195989 12757.3275801849 6751761.25064292 58.9517317902563 -9.76034647498978 151663.475179557 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1950-Dec-21 11:09 2_05:58 Moon 0.00762271075554444 0.00498881610693812 0.0295065766211869 7.75243094771797 7.75187633865327 2433636.964503774 3237.52095136332 1162808.55564074 10.7605444039468 -40.8828198125619 70940.2423349039 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1950-Dec-22 05:47 3_02:09 Earth 0.00779776567961028 0.00448096379459898 0.0285675937047177 7.46118259001439 7.4152444364073 2433637.740731144 4448.67198001839 1089539.00427749 11.5434806067358 -35.2376843176911 66044.7874596213 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1951-Jun-04 23:28 2_16:16 Earth 0.38807061149488 0.374759069680242 0.401386205459313 5.8503968859593 5.84922317856963 2433802.477635225 3856.36475439145 666832.858422965 16.7914814768873 5.71076258610988 173863.466528776 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1961-May-13 11:01 1_08:46 Earth 0.377129527120791 0.350144559218177 0.404133423469273 18.7055031904126 18.7051254818681 2437432.959300056 1966.40989360439 1352680.6728404 41.309532966805 -5.65196997291741 117094.604172628 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1964-Jan-24 22:12 9_16:47 Earth 0.0980298331507868 0.0864447427582885 0.109693347228974 6.08279966020208 6.07832963282249 2438419.424845851 13966.6344486596 595933.231442846 27.1520787450887 -13.4311275632723 105527.132930228 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1964-May-14 07:22 9_00:34 Earth 0.304473232737408 0.28133361180816 0.327663617598599 3.43585788617208 3.43330994670145 2438529.807134631 12993.6913430549 1171693.54708898 13.151710239479 11.6377302177032 149982.065611272 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1976-Nov-19 23:48 4_11:03 Earth 0.313261156044665 0.297834048537601 0.328687973971528 4.08499517271589 4.08291248101138 2443102.491922453 6422.49282493197 769135.482846085 39.3183083779985 4.14984806880613 24328.4902473376 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1977-Mar-17 10:38 7_02:55 Earth 0.098054751735851 0.0899296404285317 0.106264957499243 5.9448813452752 5.94030869931107 2443219.942776701 10254.7002348994 432032.369593615 88.0751021705502 19.486908050537 44499.5446283514 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1979-Nov-27 00:38 18:28 Earth 0.379603030677817 0.363476510246482 0.39573094739243 19.0463029326213 19.0459343997763 2444204.526681503 1107.51117456644 805018.226985237 12.1489071588125 2.61170231395607 181089.44431011 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1989-Nov-01 20:07 07:38 Earth 0.39529891456887 0.393914504381759 0.396683610696557 6.20042843148418 6.19934124733403 2447832.338464166 457.778923511514 71048.7433806512 49.268687369759 13.7679248653238 134153.836144723 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1990-Apr-19 01:55 07:09 Earth 0.0310245430965067 0.0309064069593083 0.0312997797331537 7.65124263659838 7.64000968458691 2448000.579710976 428.634116152453 110680.691882613 57.2073285170076 -84.9241901562378 70645.9323668784 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
1992-Dec-03 20:06 02:22 Earth 0.237380070576406 0.235543969275326 0.239216191256519 14.7814318569702 14.7806724706795 2448960.337308395 142.356339303745 91621.8804052016 8.12676749380453 2.19090834823831 140902.460402055 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2002-Oct-16 08:11 00:48 Earth 0.486497762819012 0.486300309048631 0.486695222140308 7.84805465212577 7.84735675919212 2452563.840994621 48.1932370083502 10181.68980233 66.1239076490554 14.7829179665025 171733.262276064 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2003-May-04 00:35 00:31 Earth 0.190808604234506 0.190334813089498 0.191282422800184 13.2003650403509 13.1993071373141 2452763.524251100 31.2909587062472 23900.4974531481 43.1490937350885 -8.70629269236789 82437.1293928053 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2005-Dec-16 13:23 02:17 Earth 0.0472088006763506 0.0461412512851272 0.0482764843382745 9.04003820190031 9.03379267373921 2453721.057600783 136.555238094449 53385.64438785 7.30532749594307 4.43071487933869 71888.25143991 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2006-Jun-11 06:05 02:34 Earth 0.417800211576796 0.417233295775627 0.418367130835896 6.43074777470834 6.42975599386396 2453897.753427332 154.164215374152 28333.3629565652 25.6784203976516 4.14951228678067 94039.1773619741 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2016-May-07 21:39 00:21 Earth 0.264333223230931 0.264093951028278 0.264572498890675 15.3855081349974 15.3848529589555 2457516.401776937 20.5953656162637 12026.4744727349 38.6983519160999 -7.22022873230933 108416.630609606 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2018-Dec-21 03:47 < 00:01 Moon 0.00440915434126532 0.0044087334481625 0.00440957523824692 7.84860979854946 7.84766269614228 2458473.657487717 0.322170969142255 21.9981192428994 2.97886530751723 -17.5931298259858 72058.106594371 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2018-Dec-21 15:34 < 00:01 Earth 0.00411143139625338 0.00411092053784409 0.00411194225457643 7.75155760762043 7.66749718818125 2458474.148807623 0.317452617316788 25.4568221673619 3.14702856919828 0.844974214414286 23372.6090226837 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2019-Jun-10 02:06 00:05 Earth 0.393603819825796 0.393598633522738 0.393609006128899 6.10441709772699 6.10330805493115 2458644.587782002 4.68886411890518 258.724096414446 104.972569817515 -2.1570799940782 151887.54737756 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2026-May-19 03:27 00:46 Earth 0.434650801486647 0.434002080885299 0.435299532253334 20.3739905481832 20.3736896642632 2461179.643928271 45.6044403214835 32518.7011676416 42.8283951528621 -5.86079830552835 137320.880440278 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2028-Dec-16 22:48 01:58 Earth 0.0430319551091332 0.0421113617828808 0.0439526783784443 8.90575815778189 8.89880279150086 2462122.450019518 117.677165508502 46060.8018828667 6.85894546169657 4.80433742632405 77533.0678534902 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2029-Jun-14 17:35 01:55 Earth 0.416048312794106 0.415586175338084 0.416510452798775 6.57582319938396 6.5748492180638 2462302.232590855 114.875484034969 23102.1356278443 32.5087650840951 4.29495552446772 80468.9392682643 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2035-Oct-28 11:38 00:30 Mars 0.0503904218876977 0.0499776047883902 0.0508050599562846 8.30418884561653 8.30350465222843 2464628.984854085 30.0513921245767 25570.1607470463 115.202435898894 -36.2095811989509 38786.1103377357 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2036-May-12 13:12 00:42 Earth 0.307881809584585 0.30721047152905 0.308553164806886 16.6212857238139 16.6207650442726 2464826.050325551 42.0993713767331 33673.0675588714 36.5055942608556 -6.19858003022291 115710.323051726 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2038-Dec-06 12:30 01:40 Earth 0.209357077950367 0.208081545814383 0.210632619053647 13.9236497131887 13.9227356296759 2465764.021170053 100.156711847543 63642.5427331074 6.51324986913528 2.04312311483251 144336.816712179 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2039-Jun-29 14:36 02:33 Earth 0.488907755684055 0.488424327353423 0.489391183849525 7.8420814142346 7.84138643260042 2465969.108006482 152.861922159613 24102.4466076017 55.1273662189964 -0.216538619161684 3317.15007004715 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2045-Oct-19 08:46 05:14 Earth 0.461429571937418 0.460291291927199 0.462568049401156 7.5516511842277 7.55088649142842 2468272.865145015 313.742754430682 58728.1769186791 61.248630168235 14.8977088112926 167432.616890116 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2046-May-03 08:41 03:53 Earth 0.137202891822129 0.13464928839567 0.139759462113057 11.5326028066636 11.5309187625373 2468468.862094637 233.206427929962 131324.558751337 42.8344388846768 -14.0432473595175 93761.4945712664 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2048-Nov-27 04:53 03:27 Earth 0.383224666358865 0.380292302806598 0.386157084591977 19.1552718486736 19.1549088753593 2469407.703339797 207.370359981037 146404.545436248 10.4193498715866 2.85232060474498 232365.140636503 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2055-Nov-03 14:31 09:47 Earth 0.386382633944417 0.384371240666837 0.38839433789956 6.12874859098932 6.12762330522842 2471940.104597396 586.515195732647 101785.085951794 53.2402170820639 9.9328896955027 92956.322566987 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2056-Apr-19 11:40 12:16 Earth 0.0375833017550101 0.036298597945194 0.039101593707418 7.10896343554706 7.09898376769898 2472107.986159707 735.715617455884 163642.724812511 58.6227567944473 64.6057423392336 76493.9682517193 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2066-Mar-01 10:23 4_04:40 Earth 0.11681214075781 0.115297285597448 0.118361685733736 6.29075541303102 6.28712841942426 2475710.932627549 6039.76570945492 126176.418552494 128.786070542646 52.7542858271993 77346.8401565644 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2076-Jan-03 07:43 5_12:25 Earth 0.0586524592964 0.0421393234563527 0.0751893815809401 6.0659846506209 6.05849100485051 2479305.821819928 7945.06552893523 826142.225525733 18.0078850126431 -3.53194023140487 37239.9871732029 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2076-Jun-02 00:13 2_14:52 Earth 0.35494519275817 0.342405381783257 0.367491736382752 5.30064049923467 5.29922411613697 2479456.508723958 3771.8235871804 630211.204731941 13.0900821270847 7.39548928113213 266932.726194239 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2082-Nov-04 11:46 06:15 Mars 0.0603975456629658 0.0563979988509072 0.0644895872778712 8.1224914926399 8.12190789538675 2481802.990069247 374.897895740224 233665.792656904 114.703164336273 -30.2221257776767 40189.632139672 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2083-May-20 12:46 09:04 Earth 0.447988997277269 0.4419967114516 0.453982659666766 20.7589008393383 20.7586143267871 2482000.031991855 544.029627429758 301400.144468202 52.2865595375009 -7.47229966712076 149396.126231909 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2085-Dec-16 21:46 02:23 Earth 0.0493973031556988 0.0485033739908847 0.0502912356113655 9.10160356629073 9.09567523228172 2482941.406708993 142.519406955753 44581.2467170121 8.03026761150444 1.44577506436615 20473.4973203447 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2086-Jun-16 02:26 00:53 Earth 0.419331966405791 0.418909119848417 0.419754814647698 6.6416177996922 6.64066102035168 2483122.601380480 52.6792457449806 21127.3065503594 64.5116547604095 -3.78174664965939 38974.1776129256 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2093-May-11 00:18 17:19 Earth 0.265105016450087 0.250397403851361 0.279826231746869 15.3716278648235 15.3709740063053 2485643.512342370 1039.29821883913 739833.895616434 36.0899444608085 -7.36173262397265 118055.307090174 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2095-Dec-03 23:31 1_01:15 Earth 0.268429109715882 0.247570837330231 0.289289337686921 15.6879645617906 15.6873318223525 2486580.479797428 1515.47466895738 1040793.76044391 7.72844857381004 2.05076464505068 154022.521541255 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2102-Oct-29 06:32 3_07:41 Earth 0.417643892705104 0.400523296353525 0.434797055465893 6.76111029180535 6.76016662536562 2489100.772109862 4780.76531551245 874114.745363113 56.0196664184259 12.220111350896 129275.089729117 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2103-Apr-28 04:02 2_22:21 Earth 0.0531736672290929 0.0345578273693768 0.0814569200758121 8.78377945910375 8.77807288557161 2489281.668334566 4221.33777714574 1644489.6337028 50.832538186108 -39.1542269780779 81255.8226019933 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2105-Nov-24 14:05 1_09:31 Earth 0.471140252493803 0.440569094571772 0.501717608519812 21.7870531315251 21.7867935545059 2490223.086478904 2010.60598798433 1526994.13177128 12.7631590881465 3.20808762513756 266101.099890152 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2112-Nov-13 23:28 3_08:42 Earth 0.340799852408825 0.326336879779903 0.355276011660764 5.11098955284034 5.10945961786932 2492769.477668633 4841.73617707241 729243.871785297 42.917509318753 8.70754748110451 75387.3152117932 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2113-Apr-03 05:16 7_11:20 Earth 0.0842550102383086 0.0712728021393901 0.097433638125551 5.77483608560495 5.76935731618787 2492909.719429489 10759.6682666817 683131.053449543 70.5768326561156 17.0635475436734 49322.4723269237 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2123-Feb-11 14:21 06:25 Earth 0.115027368507955 0.114775167331092 0.115279831224825 6.32958922318598 6.32592854753962 2496511.098208243 384.597647529703 15270.7661946657 199.484180397298 34.5597192210239 36618.1788289908 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2129-Nov-14 16:17 01:46 Mars 0.0349976852888483 0.0310056275617648 0.0408093528179017 8.68346915112332 8.6825270507729 2498979.178708058 106.28720321638 469230.779227308 108.446374309288 -57.691069682307 40569.712267 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2132-Dec-26 05:51 3_05:41 Earth 0.0214882981958599 0.00367960252569195 0.0400246619982401 7.00377066557496 6.98604394614469 2500116.743451850 4660.68812598883 927670.518418976 8.39600499377658 -6.41012736718776 43747.5255465398 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
2133-Jun-07 23:30 1_06:27 Earth 0.37923281358007 0.368345561028011 0.390121174607034 5.801601962027 5.8003907955151 2500280.479133091 1827.24792721596 543892.906306358 21.680582012022 3.85199721103457 99045.0534436583 T 8 CATAB v2.0g-lin.ifort 2021-Apr-15 20:56:04 2021-Apr-15 20:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-25 22:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin