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(2012 EL8)
Classification: Apollo [NEO]          SPK-ID: 3601299
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1493555352115193 0.00020305  
a 1.188275554278753 0.00027419 au
q 1.010800022890685 3.1139e-05 au
i 4.253001800987923 0.0048399 deg
node 358.331655783577 0.0032567 deg
peri 166.0821680770519 0.072528 deg
M 281.4504998771927 0.87915 deg
tp 2459303.732179324080
(2021-Mar-30.23217932)
1.1911 TDB
period 473.1231197979092
1.30
0.16376
0.0004484
d
yr
n .7609013065220132 0.00026336 deg/d
Q 1.365751085666821 0.00031514 au
  Orbit Determination Parameters
   # obs. used (total)      22  
   data-arc span      1 day  
   first obs. used      2012-03-14  
   last obs. used      2012-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .54786  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:50:33  

Additional Information
 Earth MOID = .018246 au 
 Jupiter MOID = 3.60189 au 
 T_jup = 5.321 
[ 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 28.3   n/a MPO226085  

[ 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
1986-May-03 17:54 1_21:52 Earth 0.487791700692975 0.363560179315678 0.612690988859409 16.3363548168716 16.3360204469242 2446554.245531271 2751.59531290083 6276455.91765723 7044.64846259362 7.98400599173013 1231.1964973014 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
1990-Feb-08 13:11 4_17:49 Earth 0.192963794001279 0.074463531619175 0.320912995757779 7.37075799701237 7.3688843853707 2447931.049005246 6828.5505587128 6507374.40115233 6897.33910757218 -14.7481984581794 937.561917743264 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
1999-Apr-17 18:42 2_18:49 Earth 0.235218915216414 0.150134808888501 0.320858440311485 8.93899414505931 8.93772683685073 2451286.279039597 4009.010618737 4294664.11242716 7302.4546362023 7.19679383989546 467.091858844385 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2003-Jan-23 07:17 17:34 Earth 0.45546413613284 0.394591516655349 0.516687043374875 15.2952208284091 15.2948383491851 2452662.803685913 1053.68298543682 3108696.58638769 4515.65087112156 -11.5955933060285 2853.07185524392 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2012-Mar-16 02:35 01:29 Earth 0.018769609967374 0.0187019339520713 0.0188376363496771 2.91804177480135 2.86898128366741 2456002.607734077 88.7932804612546 13210.707829121 3085.53801631557 85.0713432518971 449.494081922732 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2021-Apr-30 20:04 1_01:40 Earth 0.418748340676534 0.358116124405234 0.479562522039194 14.2848371557409 14.2843917141804 2459335.335830292 1539.7709541553 3059151.63875252 7261.02966695005 8.11408375398557 1015.32217025092 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2025-Feb-03 16:24 1_18:29 Earth 0.282597737123024 0.196849970882141 0.369717477427373 10.0720680983515 10.0711319488581 2460710.183571648 2549.12724798714 4420668.76715551 5495.11212807626 -12.2539468971128 1476.66597507248 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2034-Apr-08 13:19 9_10:46 Earth 0.121360554924593 0.0148534644162099 0.249390651731745 5.56435745203227 5.56041039099724 2464061.054598873 13606.3340121224 6406061.97102434 7674.66674747028 7.13700003640047 220.267134459495 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2047-Feb-27 12:33 4_16:13 Earth 0.0699860419806238 0.0419498152948075 0.0996242876383424 3.75013500650057 3.73996917138864 2468769.023124814 6733.06138775601 1532562.3211186 13826.6245920295 -18.7405003729335 207.575094950821 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2056-Apr-21 08:07 3_04:06 Earth 0.277041821299096 0.159229264910642 0.396066198939688 10.1022516477024 10.1012995767706 2472109.838290206 4565.75552637535 5975397.63223361 7295.88166576221 8.00692991641526 629.536801416637 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2060-Jan-26 14:13 2_03:09 Earth 0.452707204278379 0.278190045114022 0.630286168007865 15.1652419180152 15.1648538112925 2473485.092143144 3069.46501647227 8973292.66823937 4890.59969094656 -11.0101782529096 2440.6386627939 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
2078-Apr-12 14:25 3_00:25 Earth 0.162048062613746 0.100247709184864 0.2244872175076 6.68550644360805 6.68304656255782 2480136.101029007 4345.29955244914 3138982.86868289 7281.55326965839 8.7744375573501 386.847011422544 T 6 CATAB v2.0e-lin.ifort 2017-Nov-29 05:54:59 2018-Dec-11 15:48
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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