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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531704915752273 1.6492e-07  
a 2.122499113457183 3.3273e-08 AU
q .7361453241523704 3.5211e-07 AU
i 34.84752300688426 2.6382e-05 deg
node 275.6088488535116 3.8789e-05 deg
peri 284.7244220375129 3.0865e-05 deg
M 342.7069672137132 1.6852e-05 deg
tp 2457054.754825031239
(2015-Feb-01.25482503)
5.3534e-05 JED
period 1129.457004599816
3.09
2.6558e-05
7.271e-08
d
yr
n .3187372326116597 7.4949e-09 deg/d
Q 3.508852902761995 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-06 17:30:20  

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 0.0751103874215727 0.0751030401022795 0.0751177356972241 22.7141348288372 22.7139670212514 2420800.522763120 0.262716497554249 550.040053086436 64.8047012422257 50.0328143419861 130353.641244201 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1919-Jan-13 19:03 < 00:01 Earth 0.255672875448481 0.255671521986859 0.255674229287508 24.5688629701032 24.5684387938107 2421972.293730099 0.188392333169596 656.124275729804 47.3163517120545 84.7064591529484 732919.220832053 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1922-Jun-01 14:42 < 00:01 Earth 0.430091180379091 0.430077535549571 0.430104825274977 18.5056569556645 18.5053221820349 2423207.112327345 0.350821790150685 565.780441763292 37.9692904988105 10.7833400808642 287814.033054917 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1925-Jul-04 20:26 < 00:01 Earth 0.162968574896299 0.162954539460427 0.162982610316901 28.4395630822201 28.4389881853312 2424336.351353136 0.322828655795903 667.688199264866 52.4561298533022 6.72425021285015 60786.785210292 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1950-Jan-02 08:09 < 00:01 Earth 0.417757116652965 0.417745186008539 0.417769047459553 32.3155325809505 32.3153352121471 2433283.839267429 0.22513059485841 707.39846438319 43.6513869341969 34.4697456898128 768980.423789278 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1953-Jan-18 15:59 < 00:01 Earth 0.363505098383195 0.363494789621285 0.363515407528466 19.8619605384646 19.8615914896876 2434396.165787232 0.0935354210090269 627.51555327169 58.4454468432579 -48.8934043143722 613331.330079163 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1956-Jun-16 01:43 < 00:01 Earth 0.204926477658676 0.204912767041909 0.204940188344364 21.3781960829277 21.3775878787441 2435640.571774984 0.342435368977143 588.024303380988 45.4071961795841 -0.967565899980598 47286.5204628549 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1959-Jul-14 15:09 < 00:01 Earth 0.354590576516232 0.354578075313293 0.354603077707068 33.0831926300214 33.0829654975407 2436764.131290315 0.265111971584729 607.834344643814 57.3933955620677 -0.506209646508313 83048.6924803832 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1984-Jan-05 18:21 < 00:01 Earth 0.363033500436987 0.363025982055458 0.363041018962522 30.2047635675995 30.2045205756083 2445705.264641447 0.164809872527645 504.440368902869 45.958031752999 43.6130592922183 768096.276117063 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1987-Jan-19 13:45 < 00:01 Earth 0.419386733490183 0.419378886397961 0.41939458072143 18.9836238396946 18.9832891653843 2446815.073088837 0.0489741009667023 426.717995393746 62.8491178536166 -43.6327041878366 600998.931945632 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1990-Jun-21 17:27 < 00:01 Earth 0.0968428403141244 0.0968334186152656 0.0968522620830552 23.1794375867036 23.1782505802937 2448064.226894638 0.237557814914551 427.530012659574 48.0099283559861 -12.407061202218 65489.1413838235 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
1993-Jul-19 06:26 < 00:01 Earth 0.474977874477008 0.474969953175462 0.474985795776228 35.9800344293201 35.9798785177506 2449187.767898904 0.157003392337367 389.850857120112 58.9621583576793 -3.03436537405386 184191.889314518 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2011-Sep-24 02:34 < 00:01 Mars 0.0767589625566805 0.0767569244873627 0.0767610006464679 24.1540725800029 24.1539181654915 2455828.607067483 0.0529534968035703 128.921484266228 65.7216035743186 -47.4657213090021 139128.860477065 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2018-Jan-10 12:15 < 00:01 Earth 0.281030603456839 0.281029224342869 0.281031982576289 26.4425202430571 26.4421616855334 2458129.010446994 0.0635118481796975 115.953064327874 50.7657295980164 66.8256526134647 713672.25866278 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2024-Jun-27 20:15 < 00:01 Earth 0.0443915211802125 0.0443857362483951 0.0443973061768475 25.882184654537 25.8798654937682 2460489.344030935 0.147055652233516 279.115117168794 48.392749998695 17.6730035581959 43449.2885328294 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2052-Jan-15 00:37 < 00:01 Earth 0.279061799373646 0.279060385371265 0.279063213724881 23.2753789172806 23.2749686951992 2470551.525370197 0.098993833042822 497.643958636884 32.7845062778323 -85.623112384502 1145018.87870762 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2055-Jun-06 18:43 < 00:01 Earth 0.345446198959685 0.345436965620305 0.345455432337588 19.5237817231919 19.5233866547052 2471790.280111945 0.211316970925305 387.91551152289 22.454013551739 10.7671763454726 390068.801264754 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2058-Jul-07 03:59 < 00:01 Earth 0.232818817176497 0.2328089793633 0.23282865498306 30.031689122802 30.0313080418214 2472916.665902503 0.226642496705451 474.34500479354 36.9808387549208 6.82036824380398 125027.609519506 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2083-Jan-07 06:36 < 00:01 Earth 0.338002596587485 0.337989760268042 0.338015433700931 28.7426976207171 28.7424233579419 2481866.775006643 0.275289810720494 992.568929035867 30.3276744132691 50.9127803558679 1206777.31211705 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2086-Jan-18 14:05 < 00:01 Earth 0.476483074328638 0.476466045221984 0.476500104007218 18.4171525777777 18.4168489468738 2482974.086966768 0.0767248484263163 901.029534036842 37.482161479481 -42.3214932407922 1096480.4727149 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2089-Jun-25 03:49 < 00:01 Earth 0.0178210557419021 0.0178158323385425 0.0178262986973088 24.9571737124856 24.9511822111539 2484227.659010653 0.467737473018432 887.919718248277 29.4761676826934 -74.6865023006857 79456.4002603549 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2107-Aug-24 12:46 00:06 Mars 0.0975978223118853 0.0973721307240906 0.0978235379342992 24.5804748676883 24.5803555302132 2490861.031956978 5.89507474791083 11326.0206856767 66.741554114899 -12.5885502849827 46685.2439560312 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2117-Jan-11 12:54 00:06 Earth 0.291060838813526 0.29094758511797 0.291174752684368 25.8962448841032 25.8958913797623 2494289.037565904 6.43336409905218 20848.3172150626 32.9822736977984 73.6999116729736 1163736.15392585 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2120-May-25 16:31 00:13 Earth 0.472750256899562 0.472265261621365 0.473235321985645 18.5972074846579 18.5969044192382 2495519.188049729 13.4494630950846 20814.1949539184 24.6457853254343 14.968569241299 635531.035289424 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2123-Jul-01 03:08 00:13 Earth 0.099472879084045 0.0989333984778222 0.100012360005004 27.0472348921588 27.0462445329434 2496650.630714368 12.6974051876555 25398.8889090053 33.6414212953992 7.91002715750221 56097.5997235229 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2148-Jan-01 07:48 00:08 Earth 0.486276995012857 0.485849689134502 0.48670448090802 33.5986567103231 33.5984936276686 2505600.824873968 8.16770484052257 25442.751060458 30.7905529169185 34.1543024856746 1258785.19456207 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2151-Jan-18 10:56 00:04 Earth 0.353766751907022 0.353456135654063 0.354078001771342 20.5607239910584 20.5603576709085 2506713.955329470 3.74970258232179 23165.560196846 37.3250011109395 -57.3738123509773 1049719.64252861 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2154-Jun-16 20:59 00:13 Earth 0.173166868426905 0.172632897715411 0.173700937347613 21.9459093218972 21.9452081880863 2507959.374007878 13.2674526005749 23187.1555552903 24.5073000334059 -2.28076654399544 37260.6485466101 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2157-Jul-14 17:54 00:10 Earth 0.394680970194865 0.394195470474845 0.395166454950664 33.8466486861438 33.8464492279988 2509083.245752338 10.0554598443785 23701.3848620149 42.0595305433602 -1.50538315303541 34957.2290848264 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2182-Jan-06 21:49 00:04 Earth 0.36389070412418 0.363721187095598 0.364060354409284 29.2146831105941 29.2144324753861 2518025.408984776 4.18340378882685 13269.9123064738 32.5589310193917 51.184166222277 1217009.05347513 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2185-Jan-18 12:15 < 00:01 Earth 0.457720805972847 0.457523855390438 0.457917840281341 18.7961113441497 18.7958016398237 2519133.010528182 0.139839540441878 10706.159995579 40.4103357903792 -43.3185774084094 999833.208518639 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
2188-Jun-22 07:48 00:06 Earth 0.0536962781050079 0.0534665557612598 0.0539260787347585 24.0661497965409 24.0640878368912 2520383.824824587 5.79147286329546 10650.9338636174 28.9418481713767 -14.2987082271522 61990.3149821843 T 39 CATAB v2.0c-linF95 2015-Jul-06 17:30:22 2015-Jul-06 17:30
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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