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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531701177517452 2.2322e-07  
a 2.122499157146178 3.7864e-08 AU
q .736146132745029 4.7924e-07 AU
i 34.84752344549983 3.4904e-05 deg
node 275.6088737293999 4.0978e-05 deg
peri 284.7243972758032 3.5678e-05 deg
M 342.7069385729841 2.1619e-05 deg
tp 2457054.754916563260
(2015-Feb-01.25491656)
6.8755e-05 JED
period 1129.45703947251
3.09
3.0223e-05
8.275e-08
d
yr
n .3187372227704478 8.5292e-09 deg/d
Q 3.508852181547326 6.2596e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1989-10-29  
   last obs. used      2014-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53359  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Dec-03 05:21:12  

Additional Information
 Earth MOID = .0208825 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 (703)
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 00:32 < 00:01 Mars 0.0751054222183622 0.0750958651787031 0.075114980915492 22.7142246456344 22.7140568276184 2420800.522411606 0.331848172585398 718.131406804162 68.480561209838 50.0480241510707 123169.690697625 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1919-Jan-13 19:03 < 00:01 Earth 0.255673621541451 0.255671953513293 0.255675290405976 24.5690556626616 24.5686314909338 2421972.293494500 0.233193376954321 846.059156954751 50.3108243623698 84.3592727065012 688895.982729214 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1922-Jun-01 14:41 < 00:01 Earth 0.430098614992097 0.430082253402919 0.430114976688238 18.5055836256874 18.5052488565181 2423207.111703706 0.406664019241022 680.756917298659 59.9064080871015 12.5347358841422 214667.383177306 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1925-Jul-04 20:25 < 00:01 Earth 0.162961363255044 0.162944791079484 0.162977935420199 28.4393801824712 28.4388052564431 2424336.350957822 0.391840772446771 791.339846217079 65.2846726426315 8.18771916381817 56993.5658059937 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1950-Jan-02 08:08 < 00:01 Earth 0.417764338899849 0.417749570152556 0.417779107885873 32.3157387159357 32.3155413518033 2433283.838993107 0.264329080809282 870.002642998209 48.5640271477818 33.9874403147346 682288.03898473 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1953-Jan-18 15:59 < 00:01 Earth 0.363499288353842 0.363486849136152 0.36351172815918 19.8620734371567 19.8617043845788 2434396.165715422 0.108553726021553 769.834042202932 62.8415523146062 -49.664422567397 576547.874004073 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1956-Jun-16 01:43 < 00:01 Earth 0.204932384994472 0.204916903190765 0.204947866888594 21.3780892208792 21.3774810311876 2435640.571450365 0.384754463306854 663.451438265855 66.972917294062 0.746649612416044 41298.3829952415 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1959-Jul-14 15:09 < 00:01 Earth 0.354585596306211 0.35457168706312 0.354599505534507 33.0830500452575 33.0828229086077 2436764.130997954 0.305337075228457 676.862836502797 69.5577565568592 0.943160689052026 75189.2779602393 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1984-Jan-05 18:21 < 00:01 Earth 0.363037326718816 0.363028482888051 0.36304617073632 30.2048714788334 30.2046284902714 2445705.264516711 0.177658646767804 584.174708373295 51.4527635341131 42.7391657624936 674992.702391096 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1987-Jan-19 13:45 < 00:01 Earth 0.419383349801291 0.419374506519267 0.419392193275633 18.9836700218635 18.9833353456672 2446815.073093724 0.0585896442717325 493.439020489019 68.9845411094574 -45.1669365814784 561474.188824111 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1990-Jun-21 17:27 < 00:01 Earth 0.0968448986074956 0.0968351019597429 0.096854695321839 23.1793879463203 23.1782009625969 2448064.226781897 0.246370898397394 442.426466079449 71.63166615008 -11.21318274162 45698.2283638555 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
1993-Jul-19 06:26 < 00:01 Earth 0.474976745751459 0.474968635776537 0.474984855723772 35.9799841791837 35.9798282670259 2449187.767790235 0.165816359239581 399.048728059966 72.6113061688741 -2.12250524402068 173441.618792559 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2011-Sep-24 02:34 < 00:01 Mars 0.0767595717191749 0.0767573543557192 0.0767617891172292 24.1540744295337 24.1539200162595 2455828.607094669 0.0591916115348618 148.84085445383 67.5109098626482 -50.2115267786238 136762.283884671 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2018-Jan-10 12:15 < 00:01 Earth 0.281030798589892 0.281029381987078 0.281032215196705 26.4424850747332 26.4421265169816 2458129.010526013 0.083470767029381 124.669986231703 58.76411999115 73.2793434800438 637601.459068724 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2024-Jun-27 20:16 < 00:01 Earth 0.0443959939124869 0.0443881125373983 0.0444038753686306 25.8822604179798 25.879941497657 2460489.344223287 0.186753894289496 374.901971565737 56.1004321527795 14.8057254448681 31833.3894457924 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2052-Jan-15 00:36 < 00:01 Earth 0.279060650118307 0.279058577289229 0.279062723633897 23.2755280149326 23.2751177937896 2470551.525206924 0.143004066734372 670.04941707949 41.1362185133316 -84.6561546497331 911242.427145127 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2055-Jun-06 18:43 < 00:01 Earth 0.345453238907955 0.345440665671472 0.345465812224903 19.5236915402596 19.5232964779992 2471790.279661088 0.291650561500788 529.264241632965 32.1035337994994 12.2636326765238 308121.036704563 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2058-Jul-07 03:58 < 00:01 Earth 0.232811144113829 0.232797627466748 0.232824660749411 30.0314927621167 30.0311116660844 2472916.665487057 0.324569240630154 652.460727096926 38.1180061181837 7.13834744242186 117309.883561775 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2083-Jan-07 06:35 < 00:01 Earth 0.338013287955971 0.337995144378757 0.338031433185012 28.7431137255088 28.742839475379 2481866.774441846 0.408983158233628 1419.74184759453 38.2370918755475 51.4437377949575 964275.699223252 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2086-Jan-18 14:05 < 00:01 Earth 0.476468268150656 0.476443638793285 0.476492898635896 18.4172992982701 18.4169956603498 2482974.087045105 0.0993270349576463 1289.16491175926 51.9390805457886 -41.3657188572167 776654.974044837 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2089-Jun-25 03:48 < 00:01 Earth 0.017825695421299 0.0178180408155346 0.0178333915513323 24.9568186142701 24.9508285873477 2484227.658129034 0.692562289996819 1290.49748873139 31.8961227110006 -74.4908858877063 73376.4507329857 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2107-Aug-24 12:30 00:09 Mars 0.0977952117267 0.0974683115453646 0.0981221616156164 24.5832081662712 24.5830890829088 2490861.021114372 8.57129348753876 16401.1822448455 72.9167774313424 -12.5200747694686 42582.5077803639 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2117-Jan-11 12:37 00:09 Earth 0.291160382785498 0.290995741613006 0.291326412124379 25.9051641348201 25.9048108730116 2494289.025449763 9.35138580024957 30246.7544557855 40.4935966604023 73.6508318651665 948007.259371705 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2120-May-25 15:09 00:20 Earth 0.473175852088002 0.472472192828916 0.473879658783892 18.5953788587829 18.5950760361793 2495519.131548302 19.5447568451186 30209.360919782 35.00493292941 15.0385052021467 449892.057908115 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2123-Jul-01 02:34 00:18 Earth 0.0989995794754449 0.0982167860735585 0.0997823755926045 27.0370672661023 27.0360717978349 2496650.607194172 18.4432658029899 36855.4174549034 35.3792941902731 7.96371225265528 53442.4648636682 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2148-Jan-01 07:22 00:12 Earth 0.486649904662905 0.48603412147048 0.487266061081119 33.6107717357649 33.610608836816 2505600.807035363 11.7835036800929 36663.2030548534 38.5852131198533 34.1399694238882 1004931.17639374 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2151-Jan-18 10:47 00:05 Earth 0.35349547936511 0.353048861959892 0.353943411738716 20.5678027142497 20.5674362391567 2506713.949044926 5.42588263096286 33357.5004214146 47.975840516658 -57.4052911615971 816401.755272045 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2154-Jun-16 20:22 00:19 Earth 0.173632636263383 0.172864200760291 0.174401275194699 21.9384284339848 21.9377289425392 2507959.348711165 19.1068522782072 33364.0245517545 29.5684450736343 -2.24393123279178 30458.0123782035 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2157-Jul-14 17:24 00:14 Earth 0.394257780193499 0.393559534443561 0.394955994927897 33.836190031307 33.8359902973478 2509083.224980949 14.4763211010107 34085.7916791664 43.2006690092775 -1.50412951370164 33929.6768516453 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2182-Jan-06 21:37 00:06 Earth 0.364036630147828 0.363795760590458 0.364277768788863 29.2206153691002 29.2203648852242 2518025.400696065 5.95946590143534 18859.9977562066 39.4378635167158 51.1876817863169 1005210.74862672 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2185-Jan-18 12:15 < 00:01 Earth 0.457551397528026 0.457272179213454 0.457830783644187 18.798152453151 18.7978426677968 2519133.010705432 0.183745158201424 15171.7711025197 53.4411049159412 -43.266982843084 755058.233434942 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
2188-Jun-22 07:33 00:08 Earth 0.0538932892768116 0.0535685475827046 0.0542181855315728 24.0623358259396 24.0602810786065 2520383.814420768 8.19858388232374 15051.1676155823 32.0107772585438 -14.2179635737476 55938.5602524269 T 31 CATAB v2.0c-linF95 2014-Dec-03 05:21:17 2014-Dec-03 05:21
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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