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415029 (2011 UL21)
Classification: Apollo [NEO, PHA]          SPK-ID: 2415029
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6532749004004426 1.6216e-07  
a 2.122587792673162 3.3149e-08 au
q .7359544638234067 3.4612e-07 au
i 34.84536871833264 2.6226e-05 deg
node 275.5842111913976 3.8665e-05 deg
peri 284.7503415861677 3.0733e-05 deg
M 173.916764801228 1.9395e-05 deg
tp 2457054.822725332515
(2015-Feb-01.32272533)
5.3213e-05 JED
period 1129.527789369892
3.09
2.646e-05
7.244e-08
d
yr
n .3187172581214902 7.4662e-09 deg/d
Q 3.509221121522916 5.4804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      9379 days (25.68 yr)  
   first obs. used      1989-10-29  
   last obs. used      2015-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60282  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 15:08:42  

Additional Information
 Earth MOID = .0193567 au 
 Jupiter MOID = 2.70505 au 
 T_jup = 3.245 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8 mag n/a MPO346138  

415029 (2011 UL21)          Discovered 2011-Oct-17 by CSS at Catalina
Reference: Last Updated: 2014-11-10

[ 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
1915-Oct-30 00:33 < 00:01 Mars 0.0751102305191534 0.0751029351977412 0.0751175267821061 22.7141361463072 22.7139683383805 2420800.522761001 0.261201116954006 545.992063280896 64.7575695097985 50.025413790501 130442.899504416 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1919-Jan-13 19:03 < 00:01 Earth 0.255672891569209 0.255671543566506 0.255674239939664 24.5688648991498 24.5684407229173 2421972.293732652 0.187518724322851 651.721998524433 47.3127654185189 84.7123047189102 732981.940677483 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1922-Jun-01 14:42 < 00:01 Earth 0.430091268158153 0.430077667068251 0.430104869312993 18.5056540200536 18.5053192464393 2423207.112319917 0.350054000513093 563.929229955803 36.6706771988854 10.7030198511805 295048.144532408 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1925-Jul-04 20:26 < 00:01 Earth 0.162968497615225 0.162954498488852 0.162982496726154 28.4395592820178 28.4389843847794 2424336.351352184 0.321568608031748 665.865653186343 51.6082472010675 6.66447084153503 61152.0838280715 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1950-Jan-02 08:09 < 00:01 Earth 0.417757235675598 0.417745361889134 0.417769109622417 32.3155343905467 32.3153370218105 2433283.839270333 0.224461857687027 704.109158384572 43.6134204156861 34.4759962481504 769794.417532083 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1953-Jan-18 15:59 < 00:01 Earth 0.363505013937246 0.363494746806768 0.363515281446953 19.8619601101879 19.8615910613173 2434396.165794177 0.0931730630043285 624.672513281791 58.368105915871 -48.873051937096 613969.371260229 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1956-Jun-16 01:43 < 00:01 Earth 0.204926519125461 0.204912829694276 0.204940208625285 21.3781932627592 21.3775850586185 2435640.571775807 0.341891814830673 587.147749542301 44.149274868719 -1.02442328524326 47549.8537490184 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1959-Jul-14 15:09 < 00:01 Earth 0.354590548982776 0.354578062190106 0.354603035763378 33.0831900416979 33.0829629091818 2436764.131292182 0.264461545610419 607.122493445635 56.6844418736546 -0.54676813769383 83214.4587506322 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1984-Jan-05 18:21 < 00:01 Earth 0.363033588792105 0.363026093636191 0.363041084091115 30.2047645934842 30.2045216015604 2445705.264645408 0.164634447622302 503.021816328629 45.90826831382 43.6265322053378 769127.669798823 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1987-Jan-19 13:45 < 00:01 Earth 0.419386658302259 0.419378827557314 0.419394489185413 18.9836231627943 18.9832884884121 2446815.073094807 0.0483553612706941 425.545175744522 62.713081372576 -43.595363762242 601917.156915913 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1990-Jun-21 17:27 < 00:01 Earth 0.0968428546537401 0.0968334336757091 0.0968522757019468 23.1794352870222 23.1782482806702 2448064.226897006 0.237508781075689 427.520837779686 46.8133648397858 -12.4165073268122 66859.2674221642 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
1993-Jul-19 06:26 < 00:01 Earth 0.47497788014015 0.474969958963026 0.474985801314948 35.9800327215233 35.9798768099483 2449187.767901806 0.156900615984186 389.844132976338 58.3459415805769 -3.02686089507853 184358.399918202 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2011-Sep-24 02:34 < 00:01 Mars 0.076759039990232 0.0767570115967344 0.0767610684037121 24.1540726305964 24.1539182162411 2455828.607071458 0.0527984872608392 128.134344689434 65.7198592455773 -47.4713382552711 139293.441940438 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2018-Jan-10 12:15 < 00:01 Earth 0.28103062320265 0.281029245664912 0.281032000745245 26.4425188802099 26.442160322693 2458129.010453828 0.062879342022784 115.880414619508 50.6809822351999 66.8106367189537 714777.693495649 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2024-Jun-27 20:15 < 00:01 Earth 0.0443916161867611 0.0443858876207542 0.0443973448181182 25.8821845532082 25.879865397394 2460489.344038854 0.146227170413227 276.721687033075 47.8059402012887 17.8823032160862 44325.3541123555 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2052-Jan-15 00:37 < 00:01 Earth 0.279061759215416 0.27906038131374 0.279063137451456 23.2753823272396 23.2749721051592 2470551.525371409 0.0970600862748477 489.394288273662 32.4553626479044 -85.7214624893164 1156780.68228628 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2055-Jun-06 18:43 < 00:01 Earth 0.34544641615643 0.345437339641381 0.345455492708157 19.5237771459736 19.5233820776427 2471790.280097879 0.207558290879122 381.335371264921 21.9526699354482 10.654605621655 395029.628364715 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2058-Jul-07 03:59 < 00:01 Earth 0.232818584562117 0.232808914925161 0.23282825419266 30.0316817879813 30.0313007065269 2472916.665894214 0.222151109775258 466.178075081088 36.9488641803646 6.78544686892267 125319.137704657 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2083-Jan-07 06:36 < 00:01 Earth 0.338002893267775 0.337990277349382 0.338015509949988 28.7427076958812 28.7424334334429 2481866.774997754 0.269683711825269 974.350840947754 29.9146527214223 50.8573497144649 1222482.96326938 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2086-Jan-18 14:05 < 00:01 Earth 0.476482678653015 0.476465974429044 0.476499383430185 18.4171546679066 18.4168510367851 2482974.086975063 0.0754744940599668 884.594446096402 36.7897023552171 -42.4005714868003 1118802.99828574 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2089-Jun-25 03:49 < 00:01 Earth 0.0178211698624746 0.0178160513801029 0.017826307156691 24.9571631496569 24.9511716841609 2484227.658992118 0.458266356823544 871.121667324815 29.4072760311779 -74.7098507868756 79652.0528939825 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2107-Aug-24 12:46 00:06 Mars 0.0976028430689411 0.0973813662061077 0.0978243430892119 24.5805432674086 24.5804239364044 2490861.031689235 5.78343397779598 11114.6460342578 66.5727439398497 -12.5918405119812 46818.6216822179 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2117-Jan-11 12:54 00:06 Earth 0.291063337019607 0.290952170656766 0.291175138954399 25.8964673191634 25.8961138208931 2494289.037268858 6.31207605496863 20456.7733010955 32.6055259849522 73.695305504754 1177166.80355384 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2120-May-25 16:29 00:13 Earth 0.472760909839757 0.472285032283216 0.473236854578831 18.5971599260233 18.5968568666577 2495519.186633128 13.1963577348882 20423.0860201346 24.1853458749255 14.9676018659216 647603.492953418 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2123-Jul-01 03:07 00:12 Earth 0.0994610262007566 0.0989316793880077 0.0999903733314137 27.0469786666336 27.0459881800103 2496650.630129256 12.4582806433489 24921.7453351613 33.6033375731649 7.91060849293735 56158.5924803771 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2148-Jan-01 07:47 00:08 Earth 0.486286379316963 0.48586713879461 0.486705793079835 33.5989601590162 33.5987970809816 2505600.824432099 8.01265475278108 24961.5618432769 30.3849129559564 34.1513367270246 1275518.47742549 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2151-Jan-18 10:55 00:04 Earth 0.353759931611262 0.35345521754645 0.354065255605679 20.5609000961939 20.5605337721191 2506713.955178106 3.67867702266227 22727.3094707849 36.8311916567456 -57.3781607438844 1063826.87537921 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2154-Jun-16 20:58 00:13 Earth 0.173178546350811 0.172654699473441 0.173702487741336 21.9457198854592 21.9450187928765 2507959.373376461 13.0152720471407 22747.4754977161 24.3306993348867 -2.28134084325376 37543.4096472977 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2157-Jul-14 17:53 00:10 Earth 0.394670364179755 0.394194076976599 0.395146636980259 33.8463851344785 33.8461856694203 2509083.245235813 9.86409114555603 23251.597305424 42.0581394722249 -1.50518500544712 34955.9367513397 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2182-Jan-06 21:49 00:04 Earth 0.363894398815932 0.36372812819721 0.364060797586055 29.2148316934536 29.2145810620651 2518025.408782093 4.10222391022003 13014.2663368498 32.2019929790887 51.1792023109004 1230426.35374639 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2185-Jan-18 12:15 < 00:01 Earth 0.457716520987247 0.457523389367638 0.457909733153821 18.7961611935113 18.7958514871073 2519133.010538890 0.137335928238728 10499.4069800832 39.8164377746473 -43.3256776926391 1014871.26162785 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
2188-Jun-22 07:47 00:06 Earth 0.0537012476822584 0.0534759925475206 0.053926578082515 24.0660518479684 24.063990070751 2520383.824565293 5.6781780408416 10443.7902330154 28.8601618799086 -14.2990292162952 62172.9952147083 T 42 CATAB v2.0c-linF95 2016-Feb-26 15:08:44 2016-Feb-26 15:08
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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