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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .653170289825699 1.8577e-07  
a 2.122499127850538 3.3831e-08 AU
q .7361457573576087 3.9706e-07 AU
i 34.84752219133682 3.3912e-05 deg
node 275.6088500858434 3.8855e-05 deg
peri 284.7243863663257 3.4848e-05 deg
M 342.7069638398073 1.6897e-05 deg
tp 2457054.754836168345
(2015-Feb-01.25483617)
5.3685e-05 JED
period 1129.457016088638
3.09
2.7004e-05
7.393e-08
d
yr
n .3187372293694689 7.6207e-09 deg/d
Q 3.508852498343467 5.5929e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      9337 days (25.56 yr)  
   first obs. used      1989-10-29  
   last obs. used      2015-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54499  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-May-23 06:19:32  

Additional Information
 Earth MOID = .0208822 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 15.7 mag n/a MPO311355  

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 0.0751085659192557 0.075100874423155 0.0751162585024892 22.7141704189534 22.7140026075609 2420800.522588398 0.284907074459635 581.962074865278 67.5228202620437 50.5415986347294 125990.412556713 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1919-Jan-13 19:03 < 00:01 Earth 0.255673080758616 0.255671700143826 0.255674461811985 24.5689472246179 24.5685230501207 2421972.293606313 0.204858764250941 701.133400693438 48.5272530025104 84.8783560761097 714824.935090716 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1922-Jun-01 14:41 < 00:01 Earth 0.430094203057423 0.43008001159595 0.43010839459539 18.5056222292252 18.5052874573202 2423207.112086407 0.361232878524678 590.012610684507 56.0571671525513 11.9425046685963 222952.743278235 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1925-Jul-04 20:26 < 00:01 Earth 0.162965777143467 0.162951281796434 0.162980272477845 28.4394877368874 28.4389128286055 2424336.351167004 0.342445777728992 690.678071843547 60.8851685128637 7.4037178091202 57966.4032429857 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1950-Jan-02 08:08 < 00:01 Earth 0.417760195406135 0.417747631582552 0.417772759408938 32.3156210316102 32.3154236648015 2433283.839127183 0.238650957590575 744.632422540406 46.2693552381936 34.4622234015589 725379.843013889 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1953-Jan-18 15:59 < 00:01 Earth 0.363502484177736 0.363491637539142 0.363513331237469 19.862008896004 19.8616398454715 2434396.165738101 0.102895441664413 659.152165565108 58.9029972464634 -48.7220857173051 606836.284251671 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1956-Jun-16 01:43 < 00:01 Earth 0.204928791292284 0.204914749064191 0.204942833592948 21.3781510152793 21.3775428166802 2435640.571631837 0.352887764185229 602.050748825732 61.0214429665726 -0.12827090016646 45155.6730690216 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1959-Jul-14 15:09 < 00:01 Earth 0.354588711509134 0.354575970696751 0.354601452308858 33.0831351820805 33.0829080480108 2436764.131145595 0.277897075672166 619.600747544445 63.8046868795171 0.00750493772543292 81124.0865449665 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1984-Jan-05 18:21 < 00:01 Earth 0.363034960525457 0.363027216874191 0.363042704328887 30.204804725582 30.2045617348992 2445705.264573469 0.169996762762314 519.140315325731 47.8715143893132 43.6014039330118 737324.543285217 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1987-Jan-19 13:45 < 00:01 Earth 0.41938534868225 0.419377299859528 0.41939339764989 18.983640912639 18.9833062375246 2446815.073073711 0.0551616930228832 437.694468775827 63.0769229375409 -43.4868633242523 596997.024271432 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1990-Jun-21 17:27 < 00:01 Earth 0.0968433161334145 0.096833872129511 0.0968527602052099 23.1794220888868 23.1782350875155 2448064.226849038 0.239542238615654 428.05178454407 62.7091336737729 -12.1580067885575 52947.3388250684 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
1993-Jul-19 06:26 < 00:01 Earth 0.474977856341799 0.474969931672565 0.47498578100868 35.980021809618 35.9798658979879 2449187.767841469 0.16027783256547 389.981148119952 64.7645596936812 -2.99803096240879 182213.834618621 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2011-Sep-24 02:34 < 00:01 Mars 0.0767590484051824 0.0767570081428395 0.0767610886877376 24.1540687255244 24.153914311161 2455828.607059398 0.0537319482661393 129.351623938501 66.8729891519314 -47.9914477589553 137770.705494859 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2018-Jan-10 12:15 < 00:01 Earth 0.28103060040009 0.281029219683993 0.281031981121209 26.4425067049543 26.4421481472431 2458129.010456584 0.0652619245285183 118.03692879595 51.8656229146138 67.8822030575533 702833.097287002 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2024-Jun-27 20:15 < 00:01 Earth 0.0443935986018839 0.0443872344328395 0.0443999628290324 25.8822158157314 25.8798967662862 2460489.344090917 0.151007762292616 303.743350512397 54.5281596729582 15.5817847614254 35640.0100934595 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2052-Jan-15 00:36 < 00:01 Earth 0.279060922754148 0.279059089679011 0.279062756302361 23.2754678062467 23.2750575844433 2470551.525247639 0.126740028944407 567.698239931837 39.078732066217 -84.4840062892125 958951.030222378 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2055-Jun-06 18:43 < 00:01 Earth 0.345450384391695 0.345439716557754 0.345461052282787 19.5237263958353 19.5233313310157 2471790.279832691 0.249858266843174 449.558619863477 30.7415310231082 12.3308158262352 326495.700168294 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2058-Jul-07 03:59 < 00:01 Earth 0.232814363823913 0.2328030060139 0.232825721625832 30.0315750528453 30.0311939631277 2472916.665637377 0.275279647612639 548.180992700601 37.9884620355808 7.14502881441191 122015.249259408 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2083-Jan-07 06:36 < 00:01 Earth 0.338008370243386 0.337993593026284 0.338023148553884 28.7429294629518 28.7426552070737 2481866.774665408 0.336855167311643 1155.86812419798 36.6725323879666 51.43455899707 1005360.69806778 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2086-Jan-18 14:05 < 00:01 Earth 0.476474765296036 0.476454713336167 0.476494817998238 18.4172339073037 18.4169302724457 2482974.086988916 0.0812907888317873 1047.52117837095 49.7565095250181 -41.2624374151115 809410.173438565 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2089-Jun-25 03:48 < 00:01 Earth 0.0178237699270639 0.0178174983850059 0.0178300686743865 24.9569748954039 24.9509842588265 2484227.658497613 0.56474234241062 1046.99862435805 30.8586982509336 -74.3656534261767 75789.6216980099 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2107-Aug-24 12:37 00:07 Mars 0.0977069135406556 0.0974420401055133 0.0979718196278728 24.5819862566654 24.5818670597619 2490861.025918130 6.94899190936141 13288.8554199075 71.9229892481567 -12.5182509128157 43129.7679344353 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2117-Jan-11 12:44 00:08 Earth 0.291115770159018 0.290982565571793 0.291249886764317 25.9011900713868 25.900836701231 2494289.030823147 7.58059672089554 24509.4277783339 39.0704304875836 73.6859274273136 982541.334743095 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2120-May-25 15:46 00:16 Earth 0.472986291184607 0.472416005042509 0.473556674200151 18.5961878954595 18.5958849646712 2495519.156748692 15.8288058682455 24480.5760632768 32.5927976143693 15.0253206269143 482587.259643818 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2123-Jul-01 02:49 00:15 Earth 0.0992105022630701 0.0985761838195161 0.0998448220084642 27.0415971134064 27.0406039279626 2496650.617652630 14.946133569552 29864.9254198746 34.6673556986355 7.94595174689781 54536.9804234503 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2148-Jan-01 07:34 00:10 Earth 0.486483817638262 0.485983416069104 0.486984465999356 33.6053813059047 33.6052183252027 2505600.814945138 9.58031163642846 29796.5632405279 36.9522277311884 34.1541571572093 1049349.6332453 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2151-Jan-18 10:51 00:04 Earth 0.353615948134827 0.353252454608786 0.353980310020579 20.564652880377 20.5642864740208 2506713.951819561 4.41044132393372 27117.743705679 46.2110558952333 -57.3733997610979 847537.506774043 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2154-Jun-16 20:38 00:16 Earth 0.173425567172718 0.172800562435177 0.174050706450199 21.9417525062446 21.9410522856966 2507959.359941624 15.5411133935667 27137.7287971436 27.8910454085427 -2.2491991612602 32331.0751036265 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2157-Jul-14 17:37 00:12 Earth 0.394445882507029 0.393877809898518 0.395013934604201 33.8408386375038 33.8406390262173 2509083.234188421 11.7795931190765 27731.8306392834 43.0273769068715 -1.50320715249762 34082.1054033556 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2182-Jan-06 21:42 00:05 Earth 0.36397183669701 0.363774881231996 0.364168972290592 29.2179895724734 29.2177390214916 2518025.404338137 4.87851709390219 15425.6082556056 38.0106375624185 51.203951830425 1042995.65844318 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2185-Jan-18 12:15 < 00:01 Earth 0.457626239353639 0.457397498269356 0.457855092881614 18.7972487461996 18.7969389966179 2519133.010605957 0.149482971077116 12423.4583173568 51.3245473247861 -43.2439848887594 785981.289018442 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
2188-Jun-22 07:39 00:07 Earth 0.0538062944536188 0.0535399337408818 0.0540727594679513 24.064019508984 24.0619615833715 2520383.818996192 6.72675680837993 12346.0163164129 30.8935761048043 -14.2343456997705 57934.6046568293 T 34 CATAB v2.0c-linF95 2015-May-23 06:19:38 2015-May-23 06:19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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