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(2011 UL21)
Classification: Apollo [NEO, PHA]          SPK-ID: 3582235
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531701728891667 2.4136e-07  
a 2.122499153247406 4.9475e-08 AU
q .7361460143636879 5.2095e-07 AU
i 34.84751770611536 3.5588e-05 deg
node 275.6088482342976 4.6019e-05 deg
peri 284.7244103273133 3.8649e-05 deg
M 342.7069438918111 2.7407e-05 deg
tp 2457054.754899726586
(2015-Feb-01.25489973)
8.7448e-05 JED
period 1129.457036360498
3.09
3.9491e-05
1.081e-07
d
yr
n .3187372236486699 1.1144e-08 deg/d
Q 3.508852292131124 8.179e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      9120 days (24.97 yr)  
   first obs. used      1989-10-29  
   last obs. used      2014-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54216  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-19 06:15:06  

Additional Information
 Earth MOID = .0208823 AU 
 T_jup = 3.245 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7 mag n/a MPO311355  

[ 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 00:32 < 00:01 Mars 0.0751058519441113 0.0750936515267962 0.0751180551645369 22.7142145332014 22.7140467160708 2420800.522412322 0.427997960033882 925.233783517511 75.3805935183578 50.4127008224408 112387.345735167 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1919-Jan-13 19:03 < 00:01 Earth 0.255673576353187 0.255671645980779 0.255675508290437 24.569040010856 24.5686158387829 2421972.293495657 0.30221635122476 1097.34777732359 53.5077578834388 84.5788886895398 647972.525612803 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1922-Jun-01 14:41 < 00:01 Earth 0.430098179782537 0.430076543595164 0.430119816150709 18.5055873808961 18.505252611456 2423207.111696768 0.534142869486536 899.340486436236 60.8247871334159 12.0532642589629 198402.898158972 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1925-Jul-04 20:25 < 00:01 Earth 0.162961743635173 0.162939808937474 0.16298367831269 28.4393899858902 28.4388150614024 2424336.350965445 0.511512030882501 1046.89084336264 68.3791427035418 8.01611272053101 50943.281318297 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1950-Jan-02 08:08 < 00:01 Earth 0.417763789650141 0.417744657752503 0.417782921952735 32.3157222234553 32.3155248589626 2433283.838997180 0.340493441290993 1128.7424226509 51.3777589356476 34.0704372493159 645559.474650628 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1953-Jan-18 15:59 < 00:01 Earth 0.363499756920419 0.363483611710486 0.363515903124078 19.8620624492152 19.8616933969089 2434396.165704745 0.132995512929248 998.132603185035 66.0441909654369 -49.579933798233 547458.296189247 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1956-Jun-16 01:43 < 00:01 Earth 0.204932053842929 0.204911889386745 0.204952218451791 21.3780941838194 21.3774859932862 2435640.571445358 0.49557725606225 864.161138278039 68.1868742741911 0.681572062778313 31797.4556504218 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1959-Jul-14 15:09 < 00:01 Earth 0.354585834364805 0.354567773855289 0.354603894849308 33.0830571785462 33.0828300420979 2436764.131000482 0.391762404743311 878.947134028342 73.3064565148691 1.14682287074148 58785.0660628316 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1984-Jan-05 18:21 < 00:01 Earth 0.363037032902548 0.363025747871832 0.363048318237124 30.2048618274624 30.2046188386261 2445705.264510779 0.2190525737247 744.892292956626 54.5643185720405 42.6112208026573 634095.872252294 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1987-Jan-19 13:45 < 00:01 Earth 0.419383655698702 0.419372448976773 0.419394862740699 18.9836635655567 18.9833288894907 2446815.073077722 0.0617346421845011 628.007729179338 72.393075984305 -45.3881299610884 535402.606709433 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1990-Jun-21 17:27 < 00:01 Earth 0.0968447938121311 0.09683270383148 0.0968568838856564 23.1793891085421 23.1782021235938 2448064.226767010 0.298660310749608 544.224378267529 74.5750961116419 -10.1915857325293 38886.5224009794 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
1993-Jul-19 06:26 < 00:01 Earth 0.474976763393956 0.474966949706999 0.474986577076963 35.9799859918053 35.9798300796612 2449187.767782598 0.200946656344508 482.924427269871 78.5484476067099 -0.655474533070355 140873.584707774 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2011-Sep-24 02:34 < 00:01 Mars 0.0767591728037081 0.0767567715702709 0.07676157407519 24.1540694982676 24.1539150841594 2455828.607073674 0.0671956692339537 160.426737909107 75.5508408151488 -50.5488204422455 123206.900969765 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2018-Jan-10 12:15 < 00:01 Earth 0.28103075857842 0.281029219883508 0.281032297281144 26.4424836237426 26.4421250659203 2458129.010507727 0.106341904610984 171.294499770626 62.7533916357273 76.3288443063432 602159.086134898 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2024-Jun-27 20:16 < 00:01 Earth 0.044395589931513 0.0443854189432853 0.0444057610875532 25.8822535063705 25.8799345643263 2460489.344190888 0.247450829653583 487.073551900312 60.3060195170932 16.1244391691367 30464.9367830574 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2052-Jan-15 00:36 < 00:01 Earth 0.279060864523458 0.279058710773808 0.279063019045007 23.2755044333757 23.2750942121323 2470551.525216794 0.148563171337954 714.41535022972 43.9353407280808 -84.9019800502811 853521.013899817 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2055-Jun-06 18:43 < 00:01 Earth 0.345452221785396 0.345438767731391 0.34546567593063 19.5237027337025 19.5233076705053 2471790.279698418 0.30993095881962 566.145547677034 32.5611072551356 12.0925100034378 298803.516897278 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2058-Jul-07 03:58 < 00:01 Earth 0.23281221946914 0.232797601885477 0.232826837039371 30.0315186187457 30.0311375248019 2472916.665527878 0.347820670101197 705.549792899583 41.9002112766283 7.12373026362952 106861.546712418 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2083-Jan-07 06:35 < 00:01 Earth 0.338011936480784 0.337991561794277 0.338032313250289 28.7430576685394 28.7427834167782 2481866.774501511 0.45779525296764 1594.29089862102 41.0983581002256 51.4345731038041 897007.430527902 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2086-Jan-18 14:05 < 00:01 Earth 0.476470210441184 0.476442488403525 0.476497933913908 18.4172777578993 18.4169741208617 2482974.087019499 0.111434640965206 1451.47408117838 53.8588045651069 -41.4152425364621 749588.814550748 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2089-Jun-25 03:48 < 00:01 Earth 0.0178250203708057 0.0178164485895776 0.0178336457765917 24.9568622878194 24.9508720445069 2484227.658222329 0.781981142086047 1465.12071919535 36.0487021938836 -74.7039237344231 64988.1692459875 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2107-Aug-24 12:32 00:10 Mars 0.0977702883113893 0.0973982765110435 0.0981423645604078 24.582862747769 24.5827436323764 2490861.022449045 9.7515588389733 18665.0612813622 79.9329606979742 -12.5250130925044 38849.3809269914 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2117-Jan-11 12:39 00:11 Earth 0.29114795498988 0.290960800181399 0.291336908353374 25.904046155696 25.9036928635612 2494289.026952226 10.6424711530032 34425.6972941907 43.6471160444303 73.6604207824857 879513.095170229 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2120-May-25 15:20 00:22 Earth 0.473122594426694 0.472321450533329 0.473923929203401 18.5956063765958 18.5953035236099 2495519.138582748 22.2517680377947 34392.7931733067 37.4870035245669 15.0212544384218 419586.699535767 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2123-Jul-01 02:39 00:21 Earth 0.0990587801952869 0.0981674740907406 0.0999500892340513 27.0383375574732 27.0373427308827 2496650.610118595 20.994015976585 41963.5013833472 39.8566198865621 7.95040464105391 47388.6532283085 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2148-Jan-01 07:25 00:13 Earth 0.486603370920446 0.485901898142891 0.487305328284544 33.6092574209371 33.6090944990698 2505600.809249475 13.4243473598523 41769.0949209746 41.6172920675186 34.1443244963935 931726.748952232 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2151-Jan-18 10:48 00:06 Earth 0.353529362082735 0.353020502517375 0.354039928401884 20.5669162176918 20.5665497619276 2506713.949815981 6.17909146216396 38006.2279970296 50.6771639186399 -57.3983664270169 772890.566243617 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2154-Jun-16 20:27 00:22 Earth 0.173574505908108 0.172698665270864 0.174450610836979 21.9393599520798 21.9386602560802 2507959.351846026 21.7752798576403 38029.1932035606 32.9380544858674 -2.25648602556566 27486.6798583258 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2157-Jul-14 17:28 00:17 Earth 0.3943105604942 0.393514606378589 0.395106474324489 33.8374930264756 33.8372933269421 2509083.227555825 16.4965411172132 38855.5938397278 48.1090767141665 -1.51030152053233 30595.797800517 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2182-Jan-06 21:38 00:07 Earth 0.364018606104514 0.363743803427731 0.364293759224156 29.2198789806382 29.2196284780467 2518025.401709476 6.80002467896774 21521.0579613709 42.8103417436286 51.192149975044 926032.223049965 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2185-Jan-18 12:15 < 00:01 Earth 0.457572373669318 0.45725365260277 0.457891313407038 18.7978974966032 18.7975877212488 2519133.010668403 0.210174332088173 17318.2877570375 55.9255123947058 -43.2672485566272 721549.184218012 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
2188-Jun-22 07:35 00:09 Earth 0.0538689605415286 0.0534979360727374 0.0542401874883274 24.0628045624552 24.0607489271482 2520383.815684018 9.3645499077912 17199.1026173105 35.9043834120164 -14.2450344977365 49943.1660818244 T 27 CATAB v2.0c-linF95 2014-Oct-19 06:15:09 2014-Oct-19 06:15
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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