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JPL Small-Body Database Browser
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305507 (2008 EK117)
Classification: Main-belt Asteroid          SPK-ID: 2305507
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106712299579508 5.4069e-08  
a 3.066639197093908 3.3061e-08 au
q 2.739391076391361 1.595e-07 au
i 11.79194848998428 8.0696e-06 deg
node 15.18025102840038 3.2075e-05 deg
peri 132.9695126690804 5.8294e-05 deg
M 58.83997161089565 4.5316e-05 deg
tp 2458279.900822182601
(2018-Jun-10.40082218)
0.00024708 TDB
period 1961.518689667271
5.37
3.172e-05
8.684e-08
d
yr
n .1835312617189827 2.9679e-09 deg/d
Q 3.393887317796455 3.6589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65853  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:49  

Additional Information
 Earth MOID = 1.76499 au 
 Jupiter MOID = 1.62782 au 
 T_jup = 3.191 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO258184  

305507 (2008 EK117)          Discovered 2008-Mar-08 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ 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
1903-Jul-25 05:50 00:05 Jupiter 1.63898482991489 1.63898384485876 1.63898581516759 3.25282475901574 3.08986647352225 2416320.742927098 5.20461328847845 1511.35189732029 35.9479316845591 -88.0875827886354 1742750.7488672 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
1952-Jul-03 03:41 00:03 Jupiter 1.862501201776 1.86249900114542 1.8625034024269 3.89925152520229 3.78082116269582 2434196.653649119 2.99088845170106 374.795101280969 44.511169904698 -75.1607923681974 1407545.34418003 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
1962-Feb-12 10:51 00:03 Jupiter 1.77904347531103 1.77904203082487 1.7790449197976 2.72035776700038 2.53931565378458 2437707.951953873 2.77198190194863 210.20475871332 89.4190883681381 -86.1495489759129 1515363.32164131 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
2011-Feb-02 11:52 < 00:01 Jupiter 1.6598371289815 1.65983620586117 1.65983805213758 3.63802009214401 3.49493647989603 2455594.994205442 0.507130175181597 635.978616921245 25.9004104431422 -87.0287078625123 1581713.31447094 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
2069-Sep-12 23:37 00:03 Jupiter 1.62268440493955 1.6226835290591 1.62268528096868 3.3384435213948 3.17824294972413 2477002.484142973 2.66112871722786 1583.10050182683 31.2013112656159 -88.8386966868186 1807123.36614662 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
2118-Aug-25 08:33 00:05 Jupiter 1.86823457693578 1.86823110572813 1.86823804818601 3.77211937409658 3.64994823048967 2494879.855921222 5.16346216401005 511.250103854219 48.3948490636306 -71.5620832866585 1321243.4948569 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
2128-Apr-09 02:17 00:06 Jupiter 1.76552485544823 1.76552150077377 1.76552821012681 2.91042583404784 2.74063222265505 2498394.595294502 5.9504064151206 273.118721814513 159.221994022371 -60.2472799111754 1707309.63400846 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54
2177-Mar-23 23:29 00:08 Jupiter 1.66004359115565 1.6600408245116 1.660046358076 3.61143433958084 3.46727208789603 2516275.478336035 7.61555429305245 1221.53026400782 48.3449248941494 -84.2646117545935 1204030.41334922 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 05:54:50 2019-Sep-24 05:54

Alternate Designations
 2008 EK117 = 2005 SE197 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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