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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1072772658441813 5.4106e-08  
a 3.071390544171105 3.4035e-08 au
q 2.741900164252757 1.6023e-07 au
i 11.77838747541488 8.0508e-06 deg
node 14.99054482910544 3.1772e-05 deg
peri 134.1009093629477 5.7505e-05 deg
M 131.1071097654285 4.458e-05 deg
tp 2458284.480691295679
(2018-Jun-14.98069130)
0.00024441 TDB
period 1966.079121069345
5.38
3.268e-05
8.947e-08
d
yr
n .1831055506068327 3.0436e-09 deg/d
Q 3.400880924089452 3.7687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   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      .65114  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:23  

Additional Information
 Earth MOID = 1.76618 au 
 Jupiter MOID = 1.61659 au 
 T_jup = 3.190 
[ 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 16.3   n/a MPO476361  

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 1.63898494099156 1.63898396752525 1.63898591464719 3.25282533723488 3.08986709357159 2416320.742720359 5.18553411334189 1500.22994579115 35.8175170001688 -88.0989445438099 1758767.94854682 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
1952-Jul-03 03:41 00:03 Jupiter 1.86250118610031 1.86249898916825 1.8625033830527 3.89925206637671 3.7808217198096 2434196.653514713 2.98015838776293 374.197542197529 44.4409139513854 -75.1669654820536 1407657.85648026 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
1962-Feb-12 10:51 00:03 Jupiter 1.7790435945999 1.77904215805696 1.77904503114325 2.72035847624107 2.53931642616304 2437707.951869016 2.76403188309265 209.267203214678 88.9923089056482 -86.1698939979009 1528133.67799377 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
2011-Feb-02 11:52 < 00:01 Jupiter 1.65983721069857 1.65983629047335 1.65983813095917 3.63802095337133 3.49493738357069 2455594.994195351 0.506614828246538 634.787807535018 25.8766442321146 -87.0347798976089 1586455.98428445 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
2069-Sep-12 23:37 00:03 Jupiter 1.62268443855717 1.62268356355132 1.6226853137119 3.33844464006174 3.17824412818045 2477002.484254792 2.64672597439407 1582.90585885437 31.1310039613652 -88.8397651935137 1818860.12171154 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
2118-Aug-25 08:33 00:05 Jupiter 1.86823487850624 1.86823142671814 1.86823833033638 3.77212011682307 3.64994901812761 2494879.856119663 5.13928048114997 508.325191583621 48.3310243283797 -71.5626296342329 1323356.35800468 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
2128-Apr-09 02:18 00:06 Jupiter 1.7655247075677 1.76552136298316 1.76552805215635 2.91042717916583 2.7406336364462 2498394.595555780 5.92115242869842 272.044475711267 158.217032115876 -60.1256913488765 1727763.81524948 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55
2177-Mar-23 23:29 00:08 Jupiter 1.66004384394889 1.66004109691494 1.66004659125451 3.61143532659298 3.46727313835571 2516275.478637309 7.58092173333213 1213.20247983145 48.3333664253935 -84.2703511868911 1206377.78068713 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:25 2020-Feb-25 17:55

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