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(2009 KR4)
Classification: Aten [NEO]          SPK-ID: 3461231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2454979.5 (2009-May-28.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2394539602130646 0.00080596  
a .8435063170278556 0.00043112 au
q .6415253889507989 0.0010077 au
i 10.71919892907828 0.054102 deg
node 240.0388132501068 0.0026666 deg
peri 191.2155505157994 0.0021163 deg
M 170.2908996849702 0.017402 deg
tp 2454845.649537819894
(2009-Jan-14.14953782)
0.11624 TDB
period 282.9638370222966
0.77
0.21694
0.0005939
d
yr
n 1.272247378987984 0.00097537 deg/d
Q 1.045487245104912 0.00053435 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      10 days  
   first obs. used      2009-05-26  
   last obs. used      2009-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .42692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:45:49  

Additional Information
 Earth MOID = .0258827 au 
 Jupiter MOID = 4.17508 au 
 T_jup = 6.937 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.0   n/a MPO159143  

[ 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
1988-May-11 12:53 7_12:26 Earth 0.440254577793572 0.232418443825876 0.650914370210792 18.633790147959 18.633465351668 2447293.037116981 10826.0679784468 10581672.9261638 867.041242502126 8.42285893847824 9206.3502418661 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
1992-Jun-21 14:01 7_19:31 Earth 0.186664272150459 0.123287125381036 0.367898895959613 9.55232732792726 9.55083289670309 2448795.083830957 11250.6966841328 10296196.5632463 596.311014991603 -41.3524220216552 20524.5740658102 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
1995-May-07 07:43 3_20:04 Earth 0.279466055562057 0.124250617399941 0.441625016056371 13.6550095885614 13.6543113523214 2449844.821576593 5524.04029666407 8214141.59576885 895.375061848073 12.7728662524044 8091.73232352058 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
1999-Jun-23 03:51 2_03:31 Earth 0.326806556924366 0.21689569406419 0.449249879205923 14.2194094304101 14.2188360421556 2451352.660524905 3090.53622742355 6621509.33916367 625.666491331741 -26.9198483313573 26666.588770559 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2002-May-06 08:32 2_01:49 Earth 0.129857825098013 0.0566755569537163 0.216932787633388 9.1554247445938 9.15318334701122 2452400.855593680 2988.68056098187 4535596.49207048 809.273078986325 21.8890022371283 6916.82486054709 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2005-Nov-19 18:55 7_23:24 Venus 0.135481753344342 0.117170660080955 0.182695201620121 12.4945538045586 12.4932709137843 2453694.288012841 11484.018285792 3598528.29942767 887.268023907623 -59.8735802086051 15863.5920808039 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2005-Dec-15 07:12 6_03:45 Earth 0.345034797721785 0.343389837623375 0.347819017956645 12.6310394894139 12.6304280958287 2453719.800149844 8865.03640748923 995243.25689799 310.476592706034 83.6181620188052 62547.7306585478 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2006-Jun-18 23:02 1_06:18 Earth 0.469767496971121 0.429158738350326 0.510985049551742 18.9236129510585 18.9233132220517 2453905.459675085 1817.66779897496 2207645.95140907 570.982619747027 -22.3744550400015 38285.6456778482 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2009-Jan-10 10:25 1_02:12 Venus 0.0789046850530172 0.0759464676995521 0.0826958685202099 11.1796608885096 11.1771989038227 2454841.933991353 1571.87756304384 438434.503932847 982.407851667415 67.3075439968871 8547.78051309228 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2009-May-18 06:13 00:01 Earth 0.0259618310355288 0.0256178943849617 0.0263057246162234 6.58767955878928 6.57208191435791 2454969.758869146 1.17939141339306 17068.2064098998 69.4299372869797 0.198396184885129 130.011740371967 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2012-Mar-05 06:28 7_10:43 Venus 0.139221101997053 0.122272809364517 0.166836040684083 11.7276181645491 11.7262880817123 2455991.769698662 10723.2884075885 2235698.55686527 344.583603061418 58.9360983412849 30483.7258590035 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2012-Nov-25 05:48 5_22:52 Earth 0.343823793010072 0.342644758937606 0.346406528640048 12.9314072767784 12.9308079817109 2456256.741784956 8572.03211469443 1100093.47244923 276.100246919497 -85.0998975752748 72488.8959069376 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2019-May-11 01:25 4_08:47 Earth 0.408421664859797 0.281489017618028 0.536756295020017 17.655901940209 17.6555324369937 2458614.559122168 6286.85783519979 6475559.7590711 866.091204145934 10.0950120510261 10164.934119771 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2023-Jun-23 02:10 3_22:40 Earth 0.208684294905145 0.125033584157878 0.368786250553993 10.2690896084918 10.2678461910911 2460118.590400702 5679.84602564647 8969162.15089763 633.458091198135 -36.8218533034874 20057.2157221367 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2026-May-06 12:21 3_13:22 Earth 0.253256475662073 0.0782065750669671 0.449159528126589 12.8245997874033 12.8237793945509 2461167.014419476 5122.39796079992 9947093.17389693 879.8718096201 14.5272997128242 8427.15481350849 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
2030-Jun-21 21:48 5_05:35 Earth 0.359278916190524 0.174113023319633 0.578607161580035 15.2982518491985 15.2977670680762 2462674.408026463 7534.51072538397 11530721.6023546 627.903068139342 -23.6259190337168 26393.3188906085 T 10 CATAB v2.0g-lin.ifort 2021-Apr-15 02:45:49 2021-Apr-15 02:45
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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