Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6532284681337549 1.6492e-07  
a 2.122594427432122 3.3202e-08 au
q .7360553211313922 3.5208e-07 au
i 34.84479239221421 2.638e-05 deg
node 275.5990955617918 3.8798e-05 deg
peri 284.7351014009931 3.0871e-05 deg
M 110.187665774765 1.8546e-05 deg
tp 2457054.776071965787
(2015-Feb-01.27607197)
5.3529e-05 JED
period 1129.533085370253
3.09
2.6503e-05
7.256e-08
d
yr
n .3187157637635684 7.4782e-09 deg/d
Q 3.509133533732851 5.4891e-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-Sep-02 22:26:57  

Additional Information
 Earth MOID = .0185982 au 
 Jupiter MOID = 2.70453 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 0.0751103878858059 0.0751030405683396 0.0751177361596296 22.7141348075098 22.7139669999248 2420800.522763007 0.262716461927981 550.039904271257 64.8047050971539 50.0328135744573 130353.633276329 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1919-Jan-13 19:03 < 00:01 Earth 0.25567287570883 0.255671522247565 0.2556742295475 24.5688629600594 24.5684387837672 2421972.293729890 0.188392315939122 656.124131792204 47.3163609696344 84.7064608193352 732919.080108269 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1922-Jun-01 14:42 < 00:01 Earth 0.430091177219066 0.430077532390941 0.430104822113556 18.5056569817275 18.5053222080959 2423207.112327978 0.350821774005139 565.780380857448 37.9692931832327 10.7833381498056 287813.971250222 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1925-Jul-04 20:26 < 00:01 Earth 0.16296857819536 0.162954542760555 0.162982613614896 28.4395631514961 28.4389882546202 2424336.351353374 0.322828631347052 667.688145575514 52.4561331389887 6.72424799638785 60786.7715984834 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1950-Jan-02 08:09 < 00:01 Earth 0.417757114909423 0.41774518426641 0.417769045714377 32.3155325033511 32.3153351345463 2433283.839267680 0.225130588397888 707.398388831847 43.651390399665 34.4697466428032 768980.378896769 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1953-Jan-18 15:59 < 00:01 Earth 0.363505100187737 0.363494791426633 0.363515409332203 19.8619604569046 19.8615914081281 2434396.165787504 0.0935354235388999 627.51548600815 58.4454525445154 -48.8934028513978 613331.260056376 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1956-Jun-16 01:43 < 00:01 Earth 0.204926475037651 0.204912764421219 0.204940185723005 21.3781961294068 21.3775879252168 2435640.571775439 0.342435368341968 588.024290035451 45.4071968012824 -0.967567442306421 47286.5242556065 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1959-Jul-14 15:09 < 00:01 Earth 0.354590578994491 0.354578077791723 0.354603080185156 33.0831926868581 33.0829655543794 2436764.131290422 0.265111967071982 607.834336332987 57.3933959790352 -0.50621122156413 83048.6963970377 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1984-Jan-05 18:21 < 00:01 Earth 0.363033500645329 0.363025982263759 0.363041019170904 30.2047635509334 30.2045205589423 2445705.264641611 0.164809873172813 504.440370640911 45.9580315140447 43.6130591830222 768096.278930402 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1987-Jan-19 13:45 < 00:01 Earth 0.419386733490838 0.419378886398596 0.419394580721441 18.9836240420022 18.9832893676955 2446815.073087818 0.0489741029806698 426.718000311058 62.8491174269812 -43.6327043200259 600998.938801075 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1990-Jun-21 17:27 < 00:01 Earth 0.0968428399383891 0.0968334182395127 0.0968522617073374 23.1794375967985 23.1782505903845 2448064.226894832 0.237557817098574 427.530013738756 48.0099282436066 -12.4070613552003 65489.1418452623 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
1993-Jul-19 06:26 < 00:01 Earth 0.474977874910044 0.474969953608506 0.474985796209255 35.9800344215105 35.9798785099411 2449187.767899262 0.157003394378559 389.850856860934 58.962158120393 -3.03436558858223 184191.891058 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2011-Sep-24 02:34 < 00:01 Mars 0.0767589625576178 0.0767569244882991 0.076761000647406 24.1540725794162 24.1539181649048 2455828.607067444 0.0529534967817031 128.921484298301 65.7216035753423 -47.4657212880001 139128.860442213 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2018-Jan-10 12:15 < 00:01 Earth 0.281030603499718 0.28102922438575 0.281031982619166 26.44252032531 26.4421617677875 2458129.010446422 0.0635118483858137 115.953064228844 50.7657296853422 66.8256526912423 713672.258265104 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2024-Jun-27 20:15 < 00:01 Earth 0.0443915214423928 0.0443857365106183 0.044397306438985 25.882184660573 25.8798654998185 2460489.344031016 0.147055651126049 279.115114989033 48.3927501565098 17.673003480026 43449.2886209882 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2052-Jan-15 00:37 < 00:01 Earth 0.279061799447045 0.279060385442836 0.27906321380252 23.2753788978434 23.2749686757618 2470551.525370263 0.0989939823957126 497.644548709203 32.7845006578912 -85.6231068786357 1145019.06668444 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2055-Jun-06 18:43 < 00:01 Earth 0.345446198463895 0.345436965110068 0.345455431856244 19.5237817292859 19.5233866607987 2471790.280111937 0.211317321336522 387.916110359129 22.454010183274 10.7671688668069 390068.558783008 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2058-Jul-07 03:59 < 00:01 Earth 0.232818817827734 0.232808979999123 0.232828655649711 30.0316891364118 30.0313080554325 2472916.665902731 0.226642834924827 474.345739131215 36.9808365112771 6.82036022294847 125027.455199151 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2083-Jan-07 06:36 < 00:01 Earth 0.338002593937754 0.337989757604883 0.33801543106463 28.7426975174989 28.7424232547207 2481866.775006736 0.275290163906475 992.570033033 30.3276706811137 50.9127831886832 1206777.49807808 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2086-Jan-18 14:05 < 00:01 Earth 0.476483078627861 0.476466049501733 0.476500108325915 18.4171525396198 18.416848908718 2482974.086966728 0.0767248910684832 901.030518163918 37.4821545162343 -42.3214893454582 1096480.60121643 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2089-Jun-25 03:49 < 00:01 Earth 0.0178210543426629 0.0178158309406517 0.0178262972967765 24.9571738412337 24.9511823394624 2484227.659011027 0.467738065632468 887.920841679493 29.4761657545945 -74.6865263615793 79456.4084135158 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2107-Aug-24 12:46 00:06 Mars 0.0975977449834754 0.0973720530051616 0.0978234609965517 24.5804737924578 24.580354454883 2490861.031961265 5.89508523852881 11326.0406597762 66.7415517135061 -12.5885595928039 46685.2424395638 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2117-Jan-11 12:54 00:06 Earth 0.291060799576394 0.290947545916638 0.291174713414067 25.8962412601693 25.8958877557313 2494289.037571239 6.43337462241898 20848.3533211015 32.9822690266351 73.6999421345632 1163736.31734497 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2120-May-25 16:31 00:13 Earth 0.472750086889694 0.472265090695421 0.473235152892115 18.5972082060533 18.5969051405363 2495519.188073540 13.4494819327 20814.2315323206 24.6457727953906 14.9685495158529 635530.317569076 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2123-Jul-01 03:08 00:13 Earth 0.0994730683258615 0.0989335867478486 0.100012550218241 27.0472389486277 27.046248591445 2496650.630723853 12.6974265939009 25398.9344337449 33.6414232320365 7.91000706504122 56097.5627349663 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2148-Jan-01 07:48 00:08 Earth 0.48627684706961 0.485849539374556 0.486704334783246 33.5986518730915 33.5984887903638 2505600.824881294 8.16774123172346 25442.86312005 30.7905495958849 34.1543160172071 1258785.36759023 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2151-Jan-18 10:56 00:04 Earth 0.353766859549995 0.353456241636618 0.354078111080225 20.5607212946752 20.5603549745887 2506713.955331421 3.74971652123578 23165.6681449104 37.3249941003384 -57.3737870943402 1049719.83161022 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2154-Jun-16 20:59 00:13 Earth 0.173166683453798 0.172632710027615 0.173700755090206 21.9459122895557 21.9452111550906 2507959.374018045 13.2675200051478 23187.2748905277 24.5073006069556 -2.28077741348104 37260.7870986323 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2157-Jul-14 17:54 00:10 Earth 0.39468113799083 0.394195635665678 0.395166625351613 33.846652813373 33.8464533553372 2509083.245760818 10.0555130829054 23701.5124815862 42.0595310144105 -1.50538599095581 34957.3090491773 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2182-Jan-06 21:49 00:04 Earth 0.363890649843223 0.363721131150379 0.364060301795365 29.2146808746211 29.2144302393566 2518025.408988032 4.18344679707275 13270.0467454637 32.5589243403015 51.1841801553312 1217009.34780355 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2185-Jan-18 12:15 < 00:01 Earth 0.457720868249979 0.457523915422871 0.457917904805021 18.7961105834397 18.7958008791433 2519133.010528166 0.139841562271642 10706.2801498284 40.4103222830622 -43.3185665856818 999833.467753881 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
2188-Jun-22 07:48 00:06 Earth 0.0536962059329942 0.0534664806769636 0.0539260094773338 24.0661511881986 24.0640892258966 2520383.824828362 5.79154688117306 10651.0703514751 28.9418455628969 -14.2987339532138 61990.3470847612 T 40 CATAB v2.0c-linF95 2015-Sep-02 22:27:00 2015-Sep-02 22:27
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-09 07:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin