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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531704915671304 1.6492e-07  
a 2.122499113455155 3.3273e-08 AU
q .7361453241688531 3.5211e-07 AU
i 34.84752300699884 2.6382e-05 deg
node 275.6088488535526 3.8789e-05 deg
peri 284.7244220378744 3.0865e-05 deg
M 342.7069672125262 1.6852e-05 deg
tp 2457054.754825034885
(2015-Feb-01.25482504)
5.3534e-05 JED
period 1129.457004598198
3.09
2.6558e-05
7.271e-08
d
yr
n .3187372326121163 7.4949e-09 deg/d
Q 3.508852902741458 5.5006e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      174  
   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      .58355  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-05 05:45:57  

Additional Information
 Earth MOID = .0208816 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 0.0751104083140987 0.0751030609946627 0.0751177565898911 22.7141343965904 22.713966589048 2420800.522764784 0.26271637949714 550.03982097472 64.8047021500118 50.032792868304 130353.636121997 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1919-Jan-13 19:03 < 00:01 Earth 0.255672873935067 0.255671520475504 0.255674227773727 24.5688620756392 24.5684378993288 2421972.293731219 0.18839224498321 656.123990061835 47.3163542487767 84.7064681639207 732919.183288783 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1922-Jun-01 14:42 < 00:01 Earth 0.430091140963547 0.430077496139375 0.430104785854086 18.5056572798664 18.505322506212 2423207.112331267 0.35082164437277 565.780214388281 37.9692921090099 10.783336618524 287813.929033086 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1925-Jul-04 20:26 < 00:01 Earth 0.162968612675671 0.162954577245095 0.162982648090978 28.4395639453329 28.4389890485947 2424336.351354933 0.322828527540638 667.687948438245 52.4561309918083 6.72424761272558 60786.7895863675 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1950-Jan-02 08:09 < 00:01 Earth 0.417757106802534 0.417745176160333 0.417769037606898 32.3155322836722 32.3153349148622 2433283.839267771 0.225130551305724 707.39833698874 43.6513867683047 34.4697463413228 768980.421500652 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1953-Jan-18 15:59 < 00:01 Earth 0.363505104766887 0.363494796006634 0.363515413910501 19.861960372167 19.8615913233935 2434396.165787540 0.0935353999705826 627.515442146726 58.4454469498517 -48.8934037610162 613331.334133019 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1956-Jun-16 01:43 < 00:01 Earth 0.204926472273415 0.204912761659011 0.204940182956741 21.3781961782511 21.3775879740543 2435640.571775510 0.342435309551288 588.024203330745 45.4071960102501 -0.967566290802221 47286.5278161242 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1959-Jul-14 15:09 < 00:01 Earth 0.354590579088306 0.354578077887448 0.354603080277061 33.0831926867229 33.0829655542442 2436764.131290838 0.265111927796364 607.834243506133 57.3933954359826 -0.50621001148882 83048.7073098709 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1984-Jan-05 18:21 < 00:01 Earth 0.36303350345483 0.363025985073565 0.363041021980101 30.204763643065 30.2045206510764 2445705.264641591 0.164809863546479 504.440345813141 45.958031494619 43.6130586534667 768096.278496926 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1987-Jan-19 13:45 < 00:01 Earth 0.419386730423948 0.419378883332019 0.419394577654237 18.9836239682619 18.9832892939515 2446815.073088392 0.0489741021462112 426.717983562979 62.849117562882 -43.6327046367885 600998.936418462 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1990-Jun-21 17:27 < 00:01 Earth 0.0968428433483493 0.0968334216496153 0.0968522651171552 23.1794375326971 23.1782505263216 2448064.226894640 0.237557811979006 427.530005964399 48.0099282950603 -12.4070607955566 65489.1420320934 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
1993-Jul-19 06:26 < 00:01 Earth 0.47497787175916 0.474969950457699 0.474985793058295 35.9800343449924 35.9798784334217 2449187.767899039 0.157003391982141 389.850852875812 58.9621582554583 -3.03436546405595 184191.890626681 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2011-Sep-24 02:34 < 00:01 Mars 0.0767589625339923 0.076756924464675 0.0767610006237791 24.1540725793782 24.1539181648667 2455828.607067476 0.0529534968238811 128.921484258594 65.721603576643 -47.4657213310263 139128.860463024 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2018-Jan-10 12:15 < 00:01 Earth 0.281030603490523 0.28102922437616 0.281031982609972 26.44252032205 26.4421617645275 2458129.010446428 0.063511848371428 115.953064466543 50.7657296946595 66.8256526842241 713672.258023058 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2024-Jun-27 20:15 < 00:01 Earth 0.0443915220061836 0.0443857370744003 0.0443973070027846 25.882184673434 25.87986551271 2460489.344031175 0.147055651152617 279.115115070885 48.3927502356103 17.6730032273626 43449.2886691626 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2052-Jan-15 00:37 < 00:01 Earth 0.279061799436429 0.279060385434137 0.279063213787574 23.2753788599501 23.2749686378678 2470551.525370545 0.0989938240780268 497.643909145507 32.7845093682414 -85.6231126690943 1145018.77094405 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2055-Jun-06 18:43 < 00:01 Earth 0.345446198991387 0.345436965653277 0.345455432368018 19.5237817146387 19.5233866461518 2471790.280111330 0.211316949523267 387.915458439828 22.4540168545459 10.7671768813936 390068.770798351 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2058-Jul-07 03:59 < 00:01 Earth 0.232818817290146 0.232808979478527 0.232828655095131 30.0316891201087 30.0313080391283 2472916.665902690 0.226642463803085 474.34492919715 36.9808429711892 6.82036866235572 125027.610870677 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2083-Jan-07 06:36 < 00:01 Earth 0.338002596271123 0.337989759953836 0.338015433382413 28.7426976576421 28.742423394867 2481866.775006180 0.275289757101595 992.568755882396 30.3276736053193 50.9127801063712 1206777.33918638 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2086-Jan-18 14:05 < 00:01 Earth 0.476483075094368 0.476466045990816 0.476500104769846 18.4171524801178 18.4168488492128 2482974.086967197 0.0767248464116482 901.029375919111 37.4821602567811 -42.3214939021418 1096480.52286134 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2089-Jun-25 03:49 < 00:01 Earth 0.0178210555661159 0.0178158321651025 0.0178262985191687 24.9571737362191 24.951182234834 2484227.659010660 0.467737376232516 887.919532363514 29.4761669154323 -74.6865061936558 79456.4030371976 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2107-Aug-24 12:46 00:06 Mars 0.0975978065642045 0.0973721150002664 0.0978235221627686 24.5804746468772 24.5803553093818 2490861.031957943 5.89507414383829 11326.0195601644 66.7415535638283 -12.5885520767961 46685.2433268769 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2117-Jan-11 12:54 00:06 Earth 0.291060830658337 0.290947577020789 0.291174744471146 25.8962439498928 25.8958904455292 2494289.037568028 6.43336336877822 20848.3156438964 32.9822726763818 73.6999181514996 1163736.18927907 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2120-May-25 16:31 00:13 Earth 0.472750218894606 0.472265223637216 0.473235283959876 18.5972076448444 18.5969045794029 2495519.188054458 13.4494613888379 20814.1934936676 24.6457806794816 14.9685651825152 635530.936972913 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2123-Jul-01 03:08 00:13 Earth 0.0994729218914321 0.0989334413153822 0.100012402782137 27.0472358036063 27.0462454448505 2496650.630716527 12.6974041500627 25398.8874461634 33.6414216783325 7.91002276989606 56097.5925619146 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2148-Jan-01 07:48 00:08 Earth 0.486276959393394 0.485849653270997 0.486704445532863 33.5986555078714 33.5984924251991 2505600.824876026 8.16770983552802 25442.7665293914 30.7905513224065 34.1543057518143 1258785.26884721 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2151-Jan-18 10:56 00:04 Earth 0.353766778329833 0.353456161817198 0.35407802845458 20.5607232807604 20.5603569606251 2506713.955330208 3.74970417841974 23165.5757276371 37.3249983530585 -57.3738063324638 1049719.7196708 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2154-Jun-16 20:59 00:13 Earth 0.173166822290822 0.17263285116524 0.173700891625773 21.9459100581638 21.9452089241896 2507959.374010408 13.2674628617445 23187.1738974625 24.5072985341685 -2.28076929503718 37260.6862679767 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2157-Jul-14 17:54 00:10 Earth 0.394681012584247 0.394195512452131 0.395166497752119 33.8466497218768 33.8464502637594 2509083.245754438 10.0554681955441 23701.4050909132 42.0595307269402 -1.50538378866743 34957.2474257945 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2182-Jan-06 21:49 00:04 Earth 0.363890689928064 0.363721172566635 0.36406034054658 29.214682483883 29.2144318486599 2518025.408985862 4.1834124504609 13269.9394320989 32.558927294939 51.1841698163975 1217009.20330319 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2185-Jan-18 12:15 < 00:01 Earth 0.457720822726552 0.457523871681484 0.457917857498085 18.7961110911796 18.7958013868607 2519133.010528411 0.139840046849814 10706.1846789463 40.4103283077553 -43.3185748247337 999833.378896466 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
2188-Jun-22 07:48 00:06 Earth 0.053696257934958 0.0534665349831071 0.0539260591733153 24.0661501844546 24.0640882240636 2520383.824825761 5.7914883497225 10650.9624629219 28.9418448137128 -14.2987153813074 61990.3294380988 T 38 CATAB v2.0c-linF95 2015-Jul-05 05:46:15 2015-Jul-05 05:46
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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