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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6532035872819881 2.9334e-07  
a 2.122152768018327 4.9927e-08 AU
q .7359549671883551 6.2892e-07 AU
i 34.85008360230938 4.2559e-05 deg
node 275.6071000660137 6.4583e-05 deg
peri 284.7397899539988 4.6832e-05 deg
M 278.9393601731582 2.8747e-05 deg
tp 2457054.755830066208
(2015-Feb-01.25583007)
9.597e-05 JED
period 1129.180561852975
3.09
3.9848e-05
1.091e-07
d
yr
n .3188152649468595 1.1251e-08 deg/d
Q 3.508350568848299 8.2539e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      8306 days (22.74 yr)  
   first obs. used      1989-10-29  
   last obs. used      2012-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54764  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 15:03:18  

Additional Information
 Earth MOID = .0192583 AU 
 T_jup = 3.246 
[ 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 15.8 mag n/a E2013Q25  

[ 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 0.07510576254704 0.0750932261748161 0.0751183018051336 22.7142140644705 22.7140462471368 2420800.522393767 0.430342194245081 946.13971380886 96.1241459964702 50.3053785088523 88110.0950029078 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1919-Jan-13 19:03 < 00:01 Earth 0.255673585506382 0.255671369098268 0.255675803230864 24.5690421873632 24.5686180153429 2421972.293485782 0.305837309332278 1105.00156535372 70.2237038156115 84.4241812032051 493606.012988013 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1922-Jun-01 14:41 < 00:01 Earth 0.430098423401037 0.43007663325652 0.430120213726636 18.5055836862227 18.5052489169054 2423207.111649196 0.542952344765489 905.916870625365 63.5529468238106 11.9718194355564 189403.313928398 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1925-Jul-04 20:25 < 00:01 Earth 0.162961472668569 0.162939354318486 0.162983590996726 28.4393826537092 28.4388077281171 2424336.350947036 0.51597440020415 1055.30914911938 88.9333521878253 7.92959230945594 41092.3078445607 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1950-Jan-02 08:08 < 00:01 Earth 0.417763934932656 0.417744696083755 0.417783174190776 32.3157256270929 32.3155282626897 2433283.838985388 0.348154042217827 1135.11726438673 63.2455240241554 34.0877244943964 525244.174401094 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1953-Jan-18 15:59 < 00:01 Earth 0.363499643274125 0.363483353804162 0.363515933741772 19.8620622117179 19.8616931592918 2434396.165698809 0.143958499264117 1004.0744919835 90.759773674149 -49.5768106536441 398902.794366272 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1956-Jun-16 01:43 < 00:01 Earth 0.204932289380745 0.204911714710103 0.204952864208449 21.3780884247585 21.3774802347605 2435640.571421364 0.510815298667667 881.988035604836 79.5995907000621 0.386263674372152 30899.8621391186 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1959-Jul-14 15:09 < 00:01 Earth 0.354585599435862 0.354567091033271 0.354604107812072 33.0830503361307 33.0828231994849 2436764.130984875 0.401748368214897 900.356301034841 99.2730902670484 0.691771934259351 56153.6886614878 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1984-Jan-05 18:21 < 00:01 Earth 0.363037140684792 0.363025810600897 0.363048471076333 30.2048641239475 30.2046211352018 2445705.264500494 0.234402354666254 749.654800100872 67.5567383358831 42.8194419496481 514963.805573694 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1987-Jan-19 13:45 < 00:01 Earth 0.419383565353722 0.419372191559437 0.419394939461784 18.983662396047 18.9833277198882 2446815.073072270 0.0822029044749418 631.420106166241 99.036749689464 -45.1288796648579 391809.031825867 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1990-Jun-21 17:27 < 00:01 Earth 0.0968449524203946 0.0968321861868426 0.0968577187676076 23.1793839707915 23.1781969875241 2448064.226749170 0.32564845343898 576.791690055158 88.214569712868 -11.2796262275068 36427.2415853566 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
1993-Jul-19 06:26 < 00:01 Earth 0.474976619112005 0.474966089724658 0.474987148495095 35.979981264958 35.979825352746 2449187.767771410 0.216717692031004 518.0884063781 104.275038284309 -2.40466304667166 133696.422516278 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2011-Sep-24 02:34 < 00:01 Mars 0.0767590113815147 0.0767555677869948 0.0767624550516896 24.1540667267256 24.153912312275 2455828.607065960 0.0887596327663187 221.403237360555 96.0876571654042 -46.0821296560379 91325.2665485504 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2018-Jan-10 12:15 < 00:01 Earth 0.28103073577412 0.281028591117077 0.281032880445288 26.442479577404 26.4421210194977 2458129.010506573 0.115223680683406 189.9522254599 79.245191056023 68.2518062647542 460259.381173382 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2024-Jun-27 20:16 < 00:01 Earth 0.0443956304968526 0.0443853018771402 0.0444059592676284 25.8822534889097 25.8799345489829 2460489.344187802 0.256901554775753 492.660291719477 76.8133858541157 15.377370404472 24136.5421333775 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2052-Jan-15 00:36 < 00:01 Earth 0.279060933389604 0.279058497476067 0.279063370450524 23.2754965807585 23.2750863594779 2470551.525220555 0.162704652336298 860.327351044112 47.909969707594 -85.3495130494546 783230.610798298 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2055-Jun-06 18:43 < 00:01 Earth 0.345451965052619 0.345436023096119 0.345467907129716 19.5237037131643 19.5233086496933 2471790.279698560 0.352177640343247 670.336142220134 35.4937950435309 11.3954341261954 258150.195337493 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2058-Jul-07 03:58 < 00:01 Earth 0.232812472122491 0.232795292076307 0.232829652153085 30.0315232089064 30.0311421154344 2472916.665535029 0.393290378602768 829.86876028869 53.1493109616579 7.56865972805169 89721.8853119432 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2083-Jan-07 06:35 < 00:01 Earth 0.338011689100081 0.337988360590783 0.338035020307039 28.7430451272671 28.7427708751855 2481866.774513242 0.506005141695272 1818.80450213515 45.7635982800265 51.2601512401694 803598.604218616 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2086-Jan-18 14:05 < 00:01 Earth 0.476470595305019 0.476439173072497 0.476502019443888 18.4172714116082 18.4169677747112 2482974.087012844 0.141512654799103 1652.6735210119 63.5575533571254 -41.9086140310595 641403.063950573 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2089-Jun-25 03:48 < 00:01 Earth 0.0178248528400354 0.0178150968254709 0.0178346762610586 24.9568687748024 24.95087847674 2484227.658235482 0.862701870926254 1645.18453842341 43.3735421568111 -74.4903240473602 53957.2116837658 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2107-Aug-24 12:33 00:11 Mars 0.0977658241145263 0.0973485509786483 0.0981831783129265 24.5828000374661 24.5826809163305 2490861.022679982 10.9009102459625 20936.023984492 101.003297417517 -12.523064116106 30740.4174493182 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2117-Jan-11 12:39 00:12 Earth 0.291145777515752 0.290936183791365 0.291357627270785 25.9038465402734 25.9034932427738 2494289.027217801 11.9028116157544 38557.4061060873 50.5028911515571 73.652712867544 760082.472114344 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2120-May-25 15:21 00:25 Earth 0.473113156179613 0.47221624061599 0.474010310706973 18.5956455013913 18.5953426430008 2495519.139805472 24.8933093448675 38503.8951630123 40.4200588101596 15.0102259358615 388852.642654335 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2123-Jul-01 02:39 00:23 Earth 0.0990692493032189 0.0980714213177977 0.100067081417382 27.0385607200928 27.0375660068425 2496650.610632104 23.488811995368 46979.7263920376 49.8765393567337 7.95911998595945 37914.2045706391 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2148-Jan-01 07:26 00:15 Earth 0.486595127975287 0.485809307278409 0.487381556648809 33.6089872984883 33.6088243725516 2505600.809641838 15.0228060665259 46791.0383405654 45.8657068810968 34.13968318528 845307.425807913 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2151-Jan-18 10:48 00:07 Earth 0.353535400550643 0.352965570265313 0.354107373724277 20.5667562255044 20.5663897731487 2506713.949953601 6.90611663391452 42578.9632982525 60.4435936101753 -57.4107522341954 648107.048520992 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2154-Jun-16 20:27 00:24 Earth 0.173564167938787 0.172583349599001 0.17454531762291 21.9395237292796 21.9388239968272 2507959.352396340 24.3679619824259 42588.3904187867 36.5767927973928 -2.25323575272753 24714.8293565064 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2157-Jul-14 17:28 00:18 Earth 0.394319942993678 0.39342860372409 0.395211231712518 33.8377233208067 33.8375236273839 2509083.228010600 18.4620996426362 43511.4155682887 63.5999427789931 -1.49346038237946 22895.8878736091 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2182-Jan-06 21:39 00:08 Earth 0.364015431071791 0.363707468038117 0.364323833974402 29.2197468802921 29.2194963743831 2518025.401888133 7.60315012468763 24114.5989783403 48.8600113503199 51.1815785112775 811246.332565252 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2185-Jan-18 12:15 < 00:01 Earth 0.457576109646002 0.457219062618513 0.457933431792155 18.7978499345565 18.7975401609476 2519133.010660733 0.252187978614115 19408.4080579274 67.1190290542294 -43.3034426154961 601624.065155413 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
2188-Jun-22 07:35 00:10 Earth 0.0538646392492909 0.0534491846617285 0.0542803472560899 24.062885840791 24.0608300475082 2520383.815902252 10.4689572241367 19258.0674206816 42.9592184651327 -14.2293434255266 41693.0987238594 T 24 CATAB v2.0c-linF95 2014-Jun-13 15:03:20 2014-Jun-13 15:03
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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